Consulta: subjectFacets:"Http://aims.fao.org/aos/agrovoc/c_6507"
Registros recuperados: 45
Data/hora: 13/06/2024 05:09:15

Las rayas del género Psammobatis de la plataforma Argentina: biología y ecología
Provedor de dados: 20
Autores: Mabragaña, E.
Las rayas (Rajidae)conforman un grupo de peces cartilaginosos de hábitos bentónicos, presentes en casi todos los mares del mundo. En la plataforma continental argentina (PCA)han sido reconocidas 23 especies de rayas pertenecientes a 7 géneros (Atlántico SO). El género Psammobatis Günther, objeto del presente estudio, es endémico de Sudamérica y está compuesto de 8 especies. Dentro de las rayas de la PCA es el que mayores problemas taxonómicos ha tenido debido a su morfología y diversidad. Las características de historia de vida hacen que este grupo sea muy vulnerable a la explotación pesquera. Hasta cerca de una década atrás, en nuestro país las rayas eran capturadas incidentalmente, siendo descartadas o destinadas a la harina de pescado, pero en los...
Tipo: Theses and Dissertations
Palavras-chave: Abundance; Taxonomy; Identification keys; Geographical distribution; Reproduction; Trophic relationships; Stomach content; Taxonomy; Geographical distribution; Reproduction; Http://aims.fao.org/aos/agrovoc/c_7631; Http://aims.fao.org/aos/agrovoc/c_5083; Http://aims.fao.org/aos/agrovoc/c_6507.
Ano: 2007
URL: http://hdl.handle.net/1834/3130

Estudio de prolóculus de los foraminíferos bentónicos de la Provincia de Manabí, Ecuador
Provedor de dados: 20
Autores: Gualancañay, E.
El presente trabajo está basado en el estudio del prolóculus de los foraminíferos bentónicos de la plataforma continental superior interna de la Provincia de Manabí, la misma que incluye la zona de turbulencia. El objetivo principal fue el de llegar a establecer las fases de reproducción mediante el estudio del prolóculus de cada uno de los ejemplares analizados.
Tipo: Journal Contribution
Palavras-chave: Reproduction; Foraminifera; Reproduction; Http://aims.fao.org/aos/agrovoc/c_6507.
Ano: 1989
URL: http://hdl.handle.net/1834/2148

Importancia de los lípidos en la reproducción y ontogenia del pez blanco de Pátzcuaro (Chirostoma estor estor)
Provedor de dados: 20
Autores: Aparicio, B.
Para producir larvas de peces con buenos rendimientos, se deben conocer los requerimientos nutricionales de la especie, particularmente en los primeros estadios larvarios. Además, se sabe que la nutrición de los reproductores influye directamente en la calidad de las larvas debido, principalmente, a la cantidad y calidad de lípidos que son transferidos desde la gónada hacia los huevos. El objetivo de este trabajo fue analizar la composición de lípidos en huevos, embriones y larvas de pez blanco de Pátzcuaro (Chirostoma estor estor) con el fin de establecer las bases de los requerimientos nutricionales de lípidos durante el desarrollo larvario del pez blanco. También se determinaron los ácidos grasos en tejidos de reproductores (cerebro, gónada, hígado,...
Tipo: Theses and Dissertations
Palavras-chave: 1079; Lipids; Reproduction; Fish culture; Fish eggs; Embryos; Fish culture; Lipids; Reproduction; Http://aims.fao.org/aos/agrovoc/c_2918; Http://aims.fao.org/aos/agrovoc/c_4362; Http://aims.fao.org/aos/agrovoc/c_6507.
Ano: 2004
URL: http://hdl.handle.net/1834/3465

Contribución al estudio biológico-pesquero del pez gallo, Callorhynchus callorhynchus (Linné, 1758) Berg, 1895, en el Golfo San Matías
Provedor de dados: 20
Autores: Di Giácomo, E.E.
Tipo: Theses and Dissertations
Palavras-chave: Taxonomy; Stock assessment; Population structure; Reproduction; Trophic relationships; Taxonomy; Stock assessment; Population structure; Reproduction; Http://aims.fao.org/aos/agrovoc/c_7631; Http://aims.fao.org/aos/agrovoc/c_24251; Http://aims.fao.org/aos/agrovoc/c_6115; Http://aims.fao.org/aos/agrovoc/c_6507.
Ano: 1990
URL: http://hdl.handle.net/1834/4067

Reproducción y fecundidad del surel (Trachurus picturatus australis)
Provedor de dados: 20
Autores: Cassia, M.C.; de Ciechomski, J.D.
Studies on the sexual maturation on the jack mackerel in the area close to Mar del Plata were carried out throughout the whole year, 56 almost ripe females between 160 and 210 mm in total length and between 38 and 78 g is weight were taken into consideration for fecundity determinations. The most importante results obtained during these studies are the following: The gonad index was rather high and reached the value of 11.5.-The reproduction season is a rather one and the spawning occurs mainly in December and January.-It is assumed that a female of this species spawns once over a reproduction season, but shedding numerous batches of eggs in short intervals.-The lowest value found for the fecundity was 15.825 ovocites and the highest one was 82.892.-It is...
Tipo: Journal Contribution
Palavras-chave: Reproduction; Fecundity; Mackerel fisheries; Reproduction; Fecundity; Http://aims.fao.org/aos/agrovoc/c_6507; Http://aims.fao.org/aos/agrovoc/c_15725.
Ano: 1980
URL: http://hdl.handle.net/1834/2064

Reproducción y anidación de E. imbricata en Cuba
Provedor de dados: 20
Autores: Moncada G., F.; Pérez P., C.; Nodarse A., G.; Elizalde R., S.; Rodríguez, A.M.; Meneses, A.
Se presenta la información sobre la reproducción de E. imbricata en aguas cubanas, que se obtuvo a partir de los animales muestreados durante las capturas históricas y los estudios de anidación.
Tipo: Journal Contribution
Palavras-chave: Turtle fisheries; Reproduction; Nesting; Reproduction; Nesting; Http://aims.fao.org/aos/agrovoc/c_6507; Http://aims.fao.org/aos/agrovoc/c_5140.
Ano: 1998
URL: http://hdl.handle.net/1834/3983

Les perspectives du privé dans la gestion des ressources: contribution de GAIPES
Provedor de dados: 20
Autores: Coulibaly, M.
GAIPES
Tipo: Conference Material
Palavras-chave: Resource management; Fishery regulations; Reproduction; Fishing effort; Fishery products; Bilateral agreements; International cooperation; Research; Marketing; Fishing; Fishery products; Marketing; Resource management; Reproduction; Fishing effort; International cooperation; Research; Fishing; Http://aims.fao.org/aos/agrovoc/c_2941; Http://aims.fao.org/aos/agrovoc/c_4620; Http://aims.fao.org/aos/agrovoc/c_6524; Http://aims.fao.org/aos/agrovoc/c_6507; Http://aims.fao.org/aos/agrovoc/c_24027; Http://aims.fao.org/aos/agrovoc/c_16378; Http://aims.fao.org/aos/agrovoc/c_6513; Http://aims.fao.org/aos/agrovoc/c_26950.
Ano: 2004
URL: http://hdl.handle.net/1834/3674

Efectos de la pesca sobre la biología reproductiva de la lisa Mugil incilis (Pisces: Mugilidae) en la Ciénaga Grande de Santa Marta, Caribe colombiano
Provedor de dados: 20
Autores: Mármol-Rada, D.; Viloria-Maestre, E.; Blanco-Racedo, J.
The mullet Mugil incilis is one of the most important fish resources in the Ciénaga Grande de Santa Marta. Based on monitoring of  fishery  statistics  collected  in  the  periods  1994-1996  and  2000-2007  and  biological  aspects  of  the species between 2006 and 2007, we evaluated fishing effects on the reproductive biology of M. incilis. Fishery statistics revealed that catch and fish size declined with time. Peak spawning was observed to occur between November - December, when the gonadosomatic index and condition factor showed their maximum values, contrasting with water salinity that plunged in the rainy period. Male: female ratio was estimated as 1:3 after a sample of 1954 individuals, and mean maturity size (MMS) calculated as 23.8 cm total...
Tipo: Journal Contribution
Palavras-chave: Reproduction; Reproduction; Http://aims.fao.org/aos/agrovoc/c_6507.
Ano: 2010
URL: http://hdl.handle.net/1834/4017

Estudios sobre reproducción y fecundidad de la polaca (Micromesistius australis Norma 1937)en el Mar Argentino
Provedor de dados: 20
Autores: Sánchez, R.P.; de Ciechomski, J.D.; Acha, E.M.
An analysis is presented of reproduction aspects of Argentine Sea blue whiting. The species spawns in the study area mostly during August and September, although some spawners have been detected even in November. Total length at 50-per-cent maturity was 35,4 cm for the males and 38.0 for the females. Significant differences between the length of maturity for individuals of the continental shelf compared to those of the slope, have been obtained. The southern blue whiting is a discontinuous spawner, showing one annual reproduction peak. Fecundity was investigated on the basis of samples collected in 1978 by the RV"Walther Herwig" and "Shinkai Maru". A significant positive correlation was also observed at relating oocyte dry weight and gonad factor, whereas...
Tipo: Journal Contribution
Palavras-chave: Reproduction; Fecundity; Sexual maturity; Stock assessment; Stock assessment; Reproduction; Fecundity; Sexual maturity; Http://aims.fao.org/aos/agrovoc/c_24251; Http://aims.fao.org/aos/agrovoc/c_6507; Http://aims.fao.org/aos/agrovoc/c_15725; Http://aims.fao.org/aos/agrovoc/c_7016.
Ano: 1986
URL: http://hdl.handle.net/1834/2028

Investigación y manejo de praderas de luga roja en la XII Región
Provedor de dados: 20
Autores: Ávila, M.; Cáceres, J.; Núñez, M.; Camus, P.; Pavez, H.; Cortés, H; González, J.; Tapia, C.; Mejías, P.; Cornejo, S.; Romo, H.; Candia, A.
El objetivo del proyecto es desarrollar un plan de manejo del recurso luga roja. Este objetivo se logra a través de los siguientes objetivos específicos: determinar el (los) períodos óptimos de cosecha para las praderas de la XII Región, que permitan maximizar la biomasa obtenida conservando la capacidad productiva del recurso; diseñar y evaluar estrategias de manejo del recurso en la XII Región.
Tipo: Report
Palavras-chave: Algae; Biomass; Reproduction; Resource management; Harvesting; Biomass; Algae; Reproduction; Resource management; Harvesting; Http://aims.fao.org/aos/agrovoc/c_926; Http://aims.fao.org/aos/agrovoc/c_258; Http://aims.fao.org/aos/agrovoc/c_6507; Http://aims.fao.org/aos/agrovoc/c_6524; Http://aims.fao.org/aos/agrovoc/c_3500.
Ano: 2004
URL: http://hdl.handle.net/1834/1736

Estrategia reproductiva de la saraca, Brazilian menhaden, Brevoortia aurea (Pisces: Clupeidae), en el estuario del Río de la Plata
Provedor de dados: 20
Autores: Acha, E.M.
The Brazilian menhaden, Brevoortia aurea, is the only species of genus Brevoortia in South American Atlantic waters, being abundant in the Rio de la Plata estuary.  The temporal and spatial reproductive pattern of this menhaden was analyzed in relation to the major hydrographic features of the region, and the reproductive biology was studied by using histological analysis of ovaries. B.aurea is a multiple spawner with indeterminate annual fecundity. Daily spawning activity was mostly in the afternoon (15:00 - 16:00),based on the incidence of females with both hydrated oocytes and postovulatory follicles. Spawning frequency, determined using the percentage of females with postovulatory follicles, was about 12.  during November.  At this frequency, each...
Tipo: Theses and Dissertations
Palavras-chave: Reproduction; Fecundity; Ovaries; Fish larvae; Eggs; Life history; Brackishwater fish; Spawning grounds; Spawning seasons; Estuaries; Estuaries; Ovaries; Eggs; Life history; Spawning grounds; Reproduction; Fecundity; Fish larvae; Http://aims.fao.org/aos/agrovoc/c_2673; Http://aims.fao.org/aos/agrovoc/c_5456; Http://aims.fao.org/aos/agrovoc/c_2502; Http://aims.fao.org/aos/agrovoc/c_12170; Http://aims.fao.org/aos/agrovoc/c_7277; Http://aims.fao.org/aos/agrovoc/c_6507; Http://aims.fao.org/aos/agrovoc/c_15725; Http://aims.fao.org/aos/agrovoc/c_2924.
Ano: 1999
URL: http://hdl.handle.net/1834/1458

Reproducción y fecundidad de la cherna americana (Epinephelus morio) en el Banco de Campeche, Mexico
Provedor de dados: 20
Autores: Giménez, E.; Moreno, V.J.; Burgos, R.; Alfonso, S.
La cherna americana o mero (Epinephelus mono), de la familia Serranidae, es la especie en explotación mas importante del Banco de Carnpeche, Mexico, por lo que el conocimiento de los aspectos relacionados con su reproducción, es importante para un manejo adecuado de la especie. Se determinó que la proporcion sexual (WH) vario con la talla de los ejemplares, presentando las mayores proporciones de hembras en la clase de talla de 30 cm (1:31.5). A partir de 10s 75 cm, la proporcion no fue significativamente diferente de 1:1. La talla a partir de la cual comenzó el cambio de sexo se observo entre 30 y 35 cm Lt. El contenido de la grasa mesenterial aumentó durante el otoño (septiembre, octubre, noviembre) y descendió durante el invierno (diciembre, enero,...
Tipo: Journal Contribution
Palavras-chave: Reproduction; Fecundity; Sex ratio; Spawning; Spawning; Reproduction; Fecundity; Sex ratio; Http://aims.fao.org/aos/agrovoc/c_14490; Http://aims.fao.org/aos/agrovoc/c_6507; Http://aims.fao.org/aos/agrovoc/c_15725; Http://aims.fao.org/aos/agrovoc/c_7014.
Ano: 2003
URL: http://hdl.handle.net/1834/1804

Estudio de algunos aspectos del ciclo vital de la merluza de cola Macruronus magellanicus, Lonnberg, 1907.
Provedor de dados: 20
Autores: Giussi, A.R.
Long tailed hake Macruronus magellanicus, is a demersal fish,distributed in the SW Atlantic Ocean, in Malvinas Current waters,from 36° and 55°S, mainly between 50m and 200m depth. The species is also distributed in Chilenian waters in the Pacific Ocean, being caught in the Magellan Strait and the Beagle Channel. Age determination was estimated with the sagittae otoliths, in which only one ring is formed during the year. Growth parameters were calculated directly and with back calculated methodology, no differences were observed between the results. Differences in growth sexes were evident from 3 years old. The oldest age observed was 13. Different distributional areas of adults through out the year could suggest a migratory movement in northern waters of...
Tipo: Theses and Dissertations
Palavras-chave: Life cycle; Growth; Otoliths; Age determination; Reproduction; Population dynamics; Mortality; Population structure; Fishery surveys; Fishing grounds; Geographical distribution; Back calculation; Growth; Otoliths; Age determination; Population structure; Geographical distribution; Life cycle; Reproduction; Population dynamics; Mortality; Fishing grounds; Http://aims.fao.org/aos/agrovoc/c_3394; Http://aims.fao.org/aos/agrovoc/c_27091; Http://aims.fao.org/aos/agrovoc/c_24110; Http://aims.fao.org/aos/agrovoc/c_6115; Http://aims.fao.org/aos/agrovoc/c_5083; Http://aims.fao.org/aos/agrovoc/c_4317; Http://aims.fao.org/aos/agrovoc/c_6507; Http://aims.fao.org/aos/agrovoc/c_6111; Http://aims.fao.org/aos/agrovoc/c_4945; Http://aims.fao.org/aos/agrovoc/c_2947.
Ano: 1996
URL: http://hdl.handle.net/1834/1488

Ecología reproductiva y hábitos alimentarios del pez angel, Squatinaguggenheim (Chondrichthyes: Squatinidae), en el Distrito Biogeográfico Bonaerense, entre 34° y 42°S
Provedor de dados: 20
Autores: Colonello, J.H.
The reproductive ecology and feeding habits of Squatina guggenheim inthe SW Atlantic ecosystem between 34° and 42°S were studied. For the reproductive study, 423 individuals were obtained in 12 research cruises between 2000 and 2004. Reproductive parameters were analyzed in two oceanographic systems, the Rio de La Plata estuary (ERLP), Argentine-Uruguayan waters, and the El Rincon (ER), Argentina, Buenos Aires Prov. The feeding habits were analyzed using 329 stomach contents of individuals taken in ERLP (264)and ER (65 ER). For this study the individuals were reproductively (adults and juveniles)and seasonality (fall-winter and spring-summer)grouped. In ERLP the maximum total length was 920 mm for females and 865mm for males; in ER the maximum TL for...
Tipo: Theses and Dissertations
Palavras-chave: Feeding behaviour; Food preferences; Stomach content; Sexual maturity; Reproduction; Feeding behaviour; Food preferences; Sexual maturity; Reproduction; Http://aims.fao.org/aos/agrovoc/c_10778; Http://aims.fao.org/aos/agrovoc/c_3024; Http://aims.fao.org/aos/agrovoc/c_7016; Http://aims.fao.org/aos/agrovoc/c_6507.
Ano: 2005
URL: http://hdl.handle.net/1834/2596

Evaluación del potencial reproductivo de camarón blanco Litopenaeus vannamei en condiciones de domesticación
Provedor de dados: 20
Autores: Ceballos, B.P.
La expansión de la industria camaronícola depende de un adecuado conocimiento del proceso de reproducción que permita desarrollar programas de domesticación. El potencial reproductivo de los camarones domesticados al ser transferidos a condiciones de maduración depende, en buena parte, de la condición previa en la que se encuentran. Los indicadores más importantes relacionados con esta condición y que se analizan en el presente trabajo en relación a la edad y el tamaño de los camarones son: el grado de desarrollo ovárico y testicular, la calidad espermática y los niveles de reservas energéticas en Litopenaeus vannamei. Adicionalmente, se evaluó la posibilidad de establecer criterios predictivos de un óptimo potencial reproductivo en machos. En primer...
Tipo: Theses and Dissertations
Palavras-chave: 962; Shrimp culture; Reproduction; Reproduction; Http://aims.fao.org/aos/agrovoc/c_6507.
Ano: 2003
URL: http://hdl.handle.net/1834/3416

Fecundidad en Argopecten circularis (Sowerby, 1835) (Bivalvia: Pectinidae) de Bahía Concepción, Baja California Sur, México
Provedor de dados: 20
Autores: Vallejo-F., M.
Argopecten circularis (Sowerby, 1835) fecunddity was estimated during spawnings of February-March 1989 and March-May 1990 in Bahía Concepción, Baja California sur, México. In general, the number of oocytes released during the spawning of Argopecten circularis were potentially relatad to shell height. The calculated average oocyte wet weight during the maturity period was 8.9033x10^-8 g. Spawning ocurred ¡n individuáis 44 to 77 mm in height. The highest fecundity occurred ¡n bivalves 58 to 77 mm ¡n height. Mean fecundity obtained for all heigts by regression analysis during spawning in February-march 1989 was 12, 102, 243 oocytes. In April-May of the same year, there were 17, 917, 006 oocytes, and during March-May 1990, 16, 938, 117 oocytes.
Tipo: Journal Contribution
Palavras-chave: Fecundity; Reproduction; Fecundity; Reproduction; Http://aims.fao.org/aos/agrovoc/c_15725; Http://aims.fao.org/aos/agrovoc/c_6507.
Ano: 1995
URL: http://hdl.handle.net/1834/3817

Algunas características de la estructura y del comportamiento migratorio de los cardúmenes de caballa (Scomber japonicus marplatensis)en la plataforma bonaerense (Mar Argentino); período 1965-1984
Provedor de dados: 20
Autores: Cousseau, M.B.; Angelescu, V.A.; Perrotta, R.G.
Three periods were distinguished during the analyzed years: the first one (1965-1975)may be defined as "normal fishing seasons" occurring from October to March, with catches between 8,000 and 14,000 tons.
Tipo: Journal Contribution
Palavras-chave: Size distribution; Reproduction; Sexual maturity; Feeding; Landing statistics; Migrations; Geographical distribution; Feeding; Geographical distribution; Reproduction; Sexual maturity; Http://aims.fao.org/aos/agrovoc/c_2838; Http://aims.fao.org/aos/agrovoc/c_5083; Http://aims.fao.org/aos/agrovoc/c_6507; Http://aims.fao.org/aos/agrovoc/c_7016.
Ano: 1987
URL: http://hdl.handle.net/1834/2008

Análisis fisiológico y genético del desempeño reproductivo del camarón blanco Litopenaeus vannamei
Provedor de dados: 20
Autores: Arcos, G.F.
Durante la reproducción de camarones peneidos en cautiverio se ha observado que las hembras, a pesar de encontrarse bajo las mismas condiciones de maduración y de que provengan de una población homogénea en cuanto a edad y tamaño, presentan un diferente potencial reproductivo. Esto es, se ha observado que un alto porcentaje (75%) de hembras no desova o produce desoves no viables, mientras que un bajo porcentaje de hembras (25%) tienen la capacidad de desovar múltiples veces, produciendo estas la mayoría (50% -70%) de nauplios. Dado que el mantener en producción hembras con nulo o bajo desempeño reproductivo implica altos costos para los productores (alimento y espacio), se ha sugerido usar sólo múltiples desovadoras para incrementar el rendimiento por...
Tipo: Theses and Dissertations
Palavras-chave: 1022; Crustacean culture; Reproduction; Genetics; Genetics; Crustacean culture; Reproduction; Http://aims.fao.org/aos/agrovoc/c_3222; Http://aims.fao.org/aos/agrovoc/c_1985; Http://aims.fao.org/aos/agrovoc/c_6507.
Ano: 2004
URL: http://hdl.handle.net/1834/3524

Algunos aspectos de la biología reproductiva y comportamiento trófico de la corvina rubia (Micropogonias furnieri) en relación al frente salino del estuario del Río de la Plata.
Provedor de dados: 20
Autores: Bava, J.; Jaureguizar, A.; Meijide, F.
Tipo: Theses and Dissertations
Palavras-chave: Feeding behaviour; Reproduction; Brackishwater fish; Trophic relationships; Feeding behaviour; Reproduction; Http://aims.fao.org/aos/agrovoc/c_10778; Http://aims.fao.org/aos/agrovoc/c_6507.
Ano: 1996
URL: http://hdl.handle.net/1834/4005

Clave de identificación de cápsulas de huevos de condrictios del Mar Argentino
Provedor de dados: 20
Autores: Mabragaña, E.; Figueroa, D.E.; Scenna, L.B.; Díaz de Astarloa, J.M.; Colonello, J.H.; Massa, A.M.
Twenty eight species of oviparous chondrichthyans were reported on the Argentine Continental Shelf (SW Atlantic). The egg cases laid on the sea bed provide useful information to identify species, eggs laying areas and seasons. Based on the analysis of 155 egg cases corresponding to 21 chondrichthyan species, an illustrated field guide for a correct identification is presented.
Tipo: Journal Contribution
Palavras-chave: Reproduction; Oviparity; Eggs; Identification keys; Marine fish; Marine environment; Eggs; Marine environment; Reproduction; Http://aims.fao.org/aos/agrovoc/c_2502; Http://aims.fao.org/aos/agrovoc/c_4610; Http://aims.fao.org/aos/agrovoc/c_6507.
Ano: 2009
URL: http://hdl.handle.net/1834/3459

L'anchois ( engraulis encrasicolus) des cotes nord de la Tunisie : reproduction et exploitation
Provedor de dados: 20
Autores: Gaamour, A.; Khemiri, S.; Mili, S.; Ben Abdallah, L.
The reproduction parameters necessary for stock management and catch analysis of anchovy in the North region of Tunisia were studied. The global sex-ratio is close to 1, special caution should be taken using this parameter as it is size dependant. Mean reproduction period extends from April to October. However within this period individuals of population have different spawning and maturation. The size at first sexual maturity Lm50 is about 7.3cm. In the North region of Tunisia, the anchovy landings are lower than the exploitable biomass, therefore the anchovy is an under-exploitable species in this region
Tipo: Journal Contribution
Palavras-chave: Engraulis encrasicolus; Clupeoid fisheries; Catching methods; Fishery management; Reproduction; Sex ratio; Sexual maturity; Spawning; Stock assessment; Fishery management; Spawning; Stock assessment; Reproduction; Sex ratio; Sexual maturity; Http://aims.fao.org/aos/agrovoc/c_24026; Http://aims.fao.org/aos/agrovoc/c_14490; Http://aims.fao.org/aos/agrovoc/c_24251; Http://aims.fao.org/aos/agrovoc/c_6507; Http://aims.fao.org/aos/agrovoc/c_7014; Http://aims.fao.org/aos/agrovoc/c_7016.
Ano: 2004
URL: http://hdl.handle.net/1834/4236

Aspectos reproductivos de las principales especies de peces en la Zona Comun de Pesca Argentino-Uruguaya y en El Rincón. Noviembre, 1994
Provedor de dados: 20
Autores: Macchi, G.J.; Acha, E.M.
The maturity stages of the main commercial coastal fishes caught during the cruise H-13/94 are macroscopically analyzed, focusing this study on the white croaker Micropogonias furnieri and the striped weakfish Cynoscion striatus. Samples were obtained in the Argentine-Uruguayan Common Fishing Zone (AUCFZ) and El Rincón (Buenos Aires Prov., Argentina) during November 1994.
Tipo: Journal Contribution
Palavras-chave: Marine fish; Reproduction; Sexual maturity; Environmental conditions; Coastal waters; Reproduction; Sexual maturity; Environmental conditions; Coastal waters; Http://aims.fao.org/aos/agrovoc/c_6507; Http://aims.fao.org/aos/agrovoc/c_7016; Http://aims.fao.org/aos/agrovoc/c_32980; Http://aims.fao.org/aos/agrovoc/c_25205.
Ano: 1998
URL: http://hdl.handle.net/1834/2473

Maduración gonadal de hembras del Lenguado de California Paralichthys californicus en el medio natural
Provedor de dados: 20
Autores: Burgos, M.A.
En el presente trabajo se describe por primera vez la histología del ovario y el patrón de desarrollo del ovocito en el lenguado de California Paralichthys californicus capturadas en la zona de Bahía Magdalena, B.C.S., México. La examinación de las gónadas reveló una organización funcional del ovario de tipo asincrónico y el establecimiento de ocho estadios ováricos englobados en cinco fases de desarrollo. Dos procesos importantes ocurren durante el desarrollo ovárico. Primero, transformación de la ovogonia a ovocito primario y secundario y subsecuentemente en alvéolo cortical, el cual es acompañado por un crecimiento en tamaño del ovocito dado por un incremento en el diámetro de la vesícula germinal y la formación de nucleolos. El segundo proceso de...
Tipo: Theses and Dissertations
Palavras-chave: 510; Reproduction; Animal reproductive organs; Marine fish; Reproduction; Animal reproductive organs; Http://aims.fao.org/aos/agrovoc/c_6507; Http://aims.fao.org/aos/agrovoc/c_29449.
Ano: 2003
URL: http://hdl.handle.net/1834/3415

Pulpos octopódidos (Cephalopoda, Octopodidae).
Provedor de dados: 20
Autores: Re, M.E.
Four species of the family Octopodidae were reported to occur along the Argentine coast Octopus tehuelchus, Eledone massyae, Enteroctopus megalocyathus and Robsonella fontaniana. The first two are distributed from Brazil to south of Rawson and San Jorge Gulf, respectively, in warm-temperate waters. E.megalocyathus and R.fontaniana are of Subantarctic origin, the first ranging from San Matias Gulf to Magellan Strait, the Beagle Channel and Malvinas Islands; R.fontaniana is distributed from San Matias Gulf southwards, with records in North Patagonian and San Jorge Gulfs, Chile and Peru. A synopsis of information about taxonomical status, patterns of geographic distribution and biological aspects of these four coastal octopodids is given.
Tipo: Book Section
Palavras-chave: Animal morphology; Feeding; Geographical distribution; Growth; Life cycle; Parasites; Reproduction; Feeding; Geographical distribution; Growth; Animal morphology; Life cycle; Parasites; Reproduction; Http://aims.fao.org/aos/agrovoc/c_2838; Http://aims.fao.org/aos/agrovoc/c_5083; Http://aims.fao.org/aos/agrovoc/c_3394; Http://aims.fao.org/aos/agrovoc/c_421; Http://aims.fao.org/aos/agrovoc/c_4317; Http://aims.fao.org/aos/agrovoc/c_5574; Http://aims.fao.org/aos/agrovoc/c_6507.
Ano: 1998
URL: http://hdl.handle.net/1834/2583

Patrones de distribución espacio-temporal de los estadíos embrionarios y larvales de la anchoíta (Engraulis anchoita Hubbs &amp; Marini) a micro y macro-escala. Su relación con la supervivencia
Provedor de dados: 20
Autores: Sánchez, R.P.
This dissertation is focused on the study of implications of spatial patterns on survival of eggs and larvae and subsequent recruitment of the SW Atlantic anchovy, Engraulis anchoita. The study of distribution patterns is encompassed within the conceptual framework of the analysis of reproductive strategies of marine bony fish, as adaptations that enable them to cope with and actively exploit environmental variability, regulating their abundance and avoiding extinction. The SW Atlantic anchovy, is ideally suitable for studies on reproductive biology and recruitment on a comparative basis. Its spawning and nursery grounds are located in very diverse ecosystems. This variety refers to their physico-chemical properties, carrying capacity, the influence of...
Tipo: Theses and Dissertations
Palavras-chave: Fish eggs; Fish larvae; Recruitment; Ichthyoplankton; Biomass; Reproduction; Developmental stages; Mortality; Stock assessment; Environmental conditions; Biomass; Developmental stages; Stock assessment; Fish larvae; Reproduction; Mortality; Environmental conditions; Http://aims.fao.org/aos/agrovoc/c_926; Http://aims.fao.org/aos/agrovoc/c_2230; Http://aims.fao.org/aos/agrovoc/c_24251; Http://aims.fao.org/aos/agrovoc/c_2924; Http://aims.fao.org/aos/agrovoc/c_6507; Http://aims.fao.org/aos/agrovoc/c_4945; Http://aims.fao.org/aos/agrovoc/c_32980.
Ano: 1995
URL: http://hdl.handle.net/1834/1491

Observaciones sobre el ciclo reproductivo del mero, Acanthistius brasilianus (Serranidae, Pisces)
Provedor de dados: 20
Autores: Dell'Arciprete, O.P.; Christiansen, H.E.; Diaz de Astarloa, J.M.
The present paper deals with the study of the reproductive cycle of the sea-bass (Acanthistius brasilianus). Its main objective is getting some advance in the inderstanding of the gonad cycle of the sea-bass and the comprehension of its mode of reproduction. The study is emphasized on tahe females because it is thought that they permit a better analysis in this first stage of the reseach work. Some basic aspects, such as the anatomical and the histological description of the gonadas, the study of ovocyte maturation phases and the development of ovary maturity scales were into account. The gonad cycle was analized throughout the year by means of different approaches; histological analysis of ovary preparation and by following the statistical structure of...
Tipo: Journal Contribution
Palavras-chave: Sexual maturity; Reproductive cycle; Reproduction; Ovaries; Testes; Ovaries; Sexual maturity; Reproduction; Testes; Http://aims.fao.org/aos/agrovoc/c_5456; Http://aims.fao.org/aos/agrovoc/c_7016; Http://aims.fao.org/aos/agrovoc/c_6507; Http://aims.fao.org/aos/agrovoc/c_7682.
Ano: 1987
URL: http://hdl.handle.net/1834/2004

Biology and toxicity of the pufferfish Lagocephalus sceleratus (GMELIN, 1789) from  the Gulf of Suez
Provedor de dados: 20
Autores: El-Ganainy, A. A.; Sabrah, M. M.; Zaky, M. A.
Some biological aspects of the pufferfish Lagocephalus sceleratus were studied and correlated with the toxicity of the fish. A sample of 176 fish with total lengths ranging from 18.5 to 78.5 cm were collected from commercial catches at the Attaka fishing harbor between October 2002 and June 2003. Length weight regression parameters for males, females and all individuals were estimated. Modal progression analysis output indicates ten distinct age groups. The parameters of the von Bertalanffy's growth model were L∞ = 81.1 cm and K = 0.26 per year. The overall sex ratio of males to females was 1: 1.3. The spawning takes place during summer and the size at which 50% of fishes are mature is 42.1 cm for males and 43.3 cm for females. Analysis of the diet...
Tipo: Journal Contribution
Palavras-chave: Environmental Studies; Reproduction; Toxicity; Growth; Fish; Toxicity; Growth; Reproduction; Http://aims.fao.org/aos/agrovoc/c_7826; Http://aims.fao.org/aos/agrovoc/c_3394; Http://aims.fao.org/aos/agrovoc/c_6507.
Ano: 2006
URL: http://hdl.handle.net/1834/1452

Calamares omastréfidos (Cephalopoda, Ommastrephidae).
Provedor de dados: 20
Autores: Brunetti, N.E.; Ivanovic, M.L.; Elena, B.
An update of the knowledge on the three most important ommastrephid species that inhabit the SW Atlantic: Illex argentinus, Martialia hyadesi and Ommastrephes bartramii, is presented. Up to the moment, only I.argentinus was intensively studied. Its distribution, population structure, reproduction, growth and paralarval development are analyzed, togheter with other aspects of its biology, such as feeding, predators and parasites. Also its utilization for human consmption is considered. Regarding M.hyadesi and O.bartrami, information on their distribution and biology is presented.
Tipo: Book Section
Palavras-chave: Animal morphology; Geographical distribution; Reproduction; Fecundity; Growth; Feeding; Predators; Parasites; Population structure; Geographical distribution; Growth; Feeding; Predators; Population structure; Animal morphology; Reproduction; Fecundity; Parasites; Http://aims.fao.org/aos/agrovoc/c_5083; Http://aims.fao.org/aos/agrovoc/c_3394; Http://aims.fao.org/aos/agrovoc/c_2838; Http://aims.fao.org/aos/agrovoc/c_6163; Http://aims.fao.org/aos/agrovoc/c_6115; Http://aims.fao.org/aos/agrovoc/c_421; Http://aims.fao.org/aos/agrovoc/c_6507; Http://aims.fao.org/aos/agrovoc/c_15725; Http://aims.fao.org/aos/agrovoc/c_5574.
Ano: 1998
URL: http://hdl.handle.net/1834/2576

Estimación de los parámetros de crecimiento y reproducción de la sardina (Sardinella aurita) del Sureste de la Isla de Margarita, Venezuela
Provedor de dados: 20
Autores: Tagliafico, A.; González, L.W.; Eslava, N.
En Venezuela, la sardina (Sardinella aurita) es considerada un recurso estratégico por representar una fuente protéica de bajo costo y sustentar la pesquería artesanal de mayor importancia socio-económica el país. Por tal razón, los objetivos del presente trabajo fueron estimar los parámetros de crecimiento y aspectos reproductivos para contribuir a la evaluación y manejo de la pesquería de la sardina. Se colectaron 3960 individuos mediante muestreos mensuales de las capturas realizadas con chinchorro sardinero en el sureste de la Isla de Margarita, entre enero y diciembre de 2003. La longitud asintótica (L∞=26 cm) y el coeficiente de crecimiento (K=1.1 año-1) fueron estimados usando la rutina ELEFAN I del paquete FiSAT, conduciendo a un valor de índice de...
Tipo: Journal Contribution
Palavras-chave: Growth; Reproduction; Growth; Reproduction; Http://aims.fao.org/aos/agrovoc/c_3394; Http://aims.fao.org/aos/agrovoc/c_6507.
Ano: 2008
URL: http://hdl.handle.net/1834/3483

Estrategias reproductivas de moluscos bivalvos y equinoideos
Provedor de dados: 20
Autores: Calvo, J.; Morriconi, E.; Orler, P.
The theoretical aspects of reproductive strategies and life histories are analyzed. The gonadal structures and the main features of gametogenesis of bivalves and echinoids are described. Research on the reproductive characteristics and gametogenic cycles of the bivalve molluscs in the Argentinian littoral and the echinoid Loxechinus albus is reviewed. Special references to Mytilus edulis, Aulacomya ater, Brachidontes purpuratus, Aequipecten tehuelchus, Zygochlamys patagonica, Ostrea puelchana, Clausinella gayi, Protothaca antiqua, Eurhomalea exalbida and Mesodesma mactroides are made. Analysis of reproductive cycles includes histological and ponderal descriptions of gonadal variations. The main trend found is the partial and multiple spawning episodes....
Tipo: Book Section
Palavras-chave: Hermaphroditism; Gametogenesis; Life cycle; Marine molluscs; Reproduction; Reproductive cycle; Hermaphroditism; Gametogenesis; Life cycle; Reproduction; Http://aims.fao.org/aos/agrovoc/c_3571; Http://aims.fao.org/aos/agrovoc/c_27931; Http://aims.fao.org/aos/agrovoc/c_4317; Http://aims.fao.org/aos/agrovoc/c_6507.
Ano: 1998
URL: http://hdl.handle.net/1834/2581

Estudio sobre la anatomía y algunos aspectos de la biología de los congrios que habitan el Mar Argentino y adyacencias.
Provedor de dados: 20
Autores: Figueroa, D.E.
On the base of samples of congrid eels captured in the South Western Atlantic Ocean, between 34 degree S to 40 degree S and 30m to 400m depth, from research cruises, commercial fleet (low scale and coastal fishing) and specimens preserved in ichthyological collections, four species were determined: Ariosoma opistophthalmum, Conger orbignyanus, Bassanago albescens and Bassanago nielseni. The latter is the first record in the region. Diagnosis of taxa from Family Congridae to species is given. Morphology, reproduction, feeding and distribution of the fish species found from the region are compared and discussed, as well as those from other parts of the world. On the other hand, numerous samples of ichthyoplankton were obtained from research cruises carried...
Tipo: Theses and Dissertations
Palavras-chave: Animal morphology; Taxonomy; Anatomy; Reproduction; Feeding; Geographical distribution; Fish larvae; Taxonomy; Feeding; Geographical distribution; Animal morphology; Anatomy; Reproduction; Fish larvae; Http://aims.fao.org/aos/agrovoc/c_7631; Http://aims.fao.org/aos/agrovoc/c_2838; Http://aims.fao.org/aos/agrovoc/c_5083; Http://aims.fao.org/aos/agrovoc/c_421; Http://aims.fao.org/aos/agrovoc/c_49890; Http://aims.fao.org/aos/agrovoc/c_6507; Http://aims.fao.org/aos/agrovoc/c_2924.
Ano: 1999
URL: http://hdl.handle.net/1834/1486

Abundancia, reproducción y distribucion de tallas del gatuzo Mustelus schmitti en la Zona Comun de Pesca Argentino-Uruguaya y en el Rincón. Noviembre, 1994
Provedor de dados: 20
Autores: Cousseau, M.B.; Carozza, C.R.; Macchi, G.J.
Relative abundance, length distributions and reproductive condition of Mustelus schmitti are analyzed with samples obtained in the cruise H-13/94. Our results are compared with those obtained in other cruises. The samples were collected in the Argentine-Uruguayan Common Fishing Zone (AUCFZ) and El Rincón (Buenos Aires Prov., Argentina).
Tipo: Journal Contribution
Palavras-chave: Abundance; Reproduction; Fishery surveys; Size distribution; Reproduction; Http://aims.fao.org/aos/agrovoc/c_6507.
Ano: 1998
URL: http://hdl.handle.net/1834/2475

Features of the reproductive biology of the southern blue whiting (Micromesistius australis).
Provedor de dados: 20
Autores: Macchi, G.J.; Pájaro, M.
Different features of the reproductive biology of the southern blue whiting (Micromesistius australis) are analyzed. Samples were obtained from research cruises and from commercial catches carried out between March-November 1995, in waters near Malvinas Islands. Reproductive activity of M. australis was observed between the end of July and September, southwest of Malvinas Islands. Oocyte diameter distribution of gravid females and the histological observations show that this species is a batch spawner with determinate annual fecundity.  Preliminary estimate of the potential annual fecundity was about 478,000 oocytes for a 51-cm mean total length. Size at first maturity for this species was about 31 cm total length.
Tipo: Journal Contribution
Palavras-chave: Reproduction; Ovaries; Fecundity; Ovaries; Reproduction; Fecundity; Http://aims.fao.org/aos/agrovoc/c_5456; Http://aims.fao.org/aos/agrovoc/c_6507; Http://aims.fao.org/aos/agrovoc/c_15725.
Ano: 1999
URL: http://hdl.handle.net/1834/2566

El canibalismo como mecanismo regulador denso-dependiente de mortalidad natural en la anchoíta argentina Engraulis anchoita. Su relación con las estrategias reproductivas de la especie.
Provedor de dados: 20
Autores: Pájaro, M.
Cannibalism is not an abnormal behaviour and it can be observed in a wide number of animals. In Pisces, cannibalism may be the result of endogenous intraspecific factors (nutritional state, size, age, state of development) or exogenous intraspecific factors (food, density, light). Nevertheless, external fertilization and the high fecundity of teleost fish tend to increase egg cannibalism, in particular among filter feeding fishes such as anchovies. In the present work, two important Argentine anchovy Engraulis anchoita stocks were studied. The first is to the north of 41°S, and spawns during spring on the coastal and shelf waters of Buenos Aires Province,Argentina, and Uruguay. The second one inhabits the Patagonian region, from 41°S to 47°S. It spawns...
Tipo: Theses and Dissertations
Palavras-chave: Feeding behaviour; Cannibalism; Natural mortality; Fish larvae; Fish eggs; Spawning seasons; Stocks; Food preferences; Reproduction; Stocks; Food preferences; Feeding behaviour; Cannibalism; Fish larvae; Reproduction; Http://aims.fao.org/aos/agrovoc/c_28772; Http://aims.fao.org/aos/agrovoc/c_3024; Http://aims.fao.org/aos/agrovoc/c_10778; Http://aims.fao.org/aos/agrovoc/c_9580; Http://aims.fao.org/aos/agrovoc/c_2924; Http://aims.fao.org/aos/agrovoc/c_6507.
Ano: 1998
URL: http://hdl.handle.net/1834/1476

Desempeño reproductivo de Litopenaeus schmitti de cultivo en  condiciones comerciales
Provedor de dados: 20
Autores: Pérez-Jar, L.; Ramos Trujillo, L.; Racotta Dimitrov, I. S.; Guerrero, C.; Acebedo, A.
Para satisfacer la demanda de postlarvas en las granjas de cultivo de camarón blanco Litopenaeus schmitti en Cuba, los Laboratorios de Producción de Postlarvas requieren de un aumento del porcentaje de cópulas en reproductores obtenidos en ciclo cerrado. Este trabajo se propone evaluar el desempeño reproductivo de los progenitores, bajo la influencia del manejo empleado en sistemas de tanques unisexo y mixto en condiciones comerciales. Los resultados indicaron que el desempeño reproductivo en términos de hembras maduras, porcentaje de cópulas exitosas, número de huevos y nauplios por desove, así como porcentaje de eclosión, no difirió entre los sistemas empleados. El porcentaje de hembras maduras (estadio IV) del número total en cada tratamiento, se...
Tipo: Journal Contribution
Palavras-chave: Brine shrimp culture; Reproduction; Reproduction; Http://aims.fao.org/aos/agrovoc/c_6507.
Ano: 2010
URL: http://hdl.handle.net/1834/4105

Reproduccion y fecundidad de la cherna americana (epinephelus morio) en el Banco de Campeche, México
Provedor de dados: 20
Autores: Gimenez Hurtado, E.; Moreno C. Garcia, V.; Burgos Rosas, R.; Alfonso Chiroldes, S.
The red grouper (Epinephelus morio), of the family Serranidae, is the most important species, caught in the Campeche Bank, Mexico. The knowledge related with their reproduction is important for an adequate management. We found that sexual proportion (WH) changed by size. The biggest proportions of females was in the size class of 30 cm (1:31.5). Fishes over 75 cm, showed a not significantly different proportion from 1:l. Sex change was found between 30-35 cm (Lt). Fatty rnesenterial increases during the Fall (September, October and November), decreasing during Winter (December, January and Febrary). Spawning process starts in December (early winter) and tinish in May, occurring a massive spawning during February, March and April. 77% of mature females were...
Tipo: Journal Contribution
Palavras-chave: Reproduction; Fecundity; Reproduction; Fecundity; Http://aims.fao.org/aos/agrovoc/c_6507; Http://aims.fao.org/aos/agrovoc/c_15725.
Ano: 2003
URL: http://hdl.handle.net/1834/3678

Monitoreo y prospección de orange roughy, año 2001
Provedor de dados: 20
Autores: Young, Z.; Díaz, E.; Bahamonde, R.; Tascheri, R.; Muñoz, Y.; Olivares, A.; Ortego, M.I.; Rivera, J.; Oliva, J.
Se realizó una recopilación y análisis de datos de la pesquería de orange roughy (Hoplostethus atlanticus) que cubrió el período mayo-agosto de 2001, con el propósito de caracterizar la actividad pesquera y la condición biológica del recurso. Además, se realizó una pesca exploratoria, orientada a prospectar nuevas áreas de extracción para este recurso.
Tipo: Report
Palavras-chave: Marine fisheries; Deep-sea fisheries; Stock assessment; Fecundity; Reproduction; Echo surveys; Marine fisheries; Stock assessment; Fecundity; Reproduction; Http://aims.fao.org/aos/agrovoc/c_4611; Http://aims.fao.org/aos/agrovoc/c_24251; Http://aims.fao.org/aos/agrovoc/c_15725; Http://aims.fao.org/aos/agrovoc/c_6507.
Ano: 2004
URL: http://hdl.handle.net/1834/1727

Efecto de la salinidad y la temperatura sobre el ciclo de vida de cangrejos estuariales (Decapoda, Grapsidae).
Provedor de dados: 20
Autores: Bas, C.
El ciclo de vida de los cangrejos verdaderos (Crustacea, Brachyura) incluye en la mayoria de los casos cuatro etapas. Una etapa embrionaria, en la cual los huevos en desarrollo protegidos por una membrana de varias capas, se mantienen adheridos a los ple6podas de la hembra, expuestos a las mismas condiciones ambientales que el adulto . Posteriormente una etapa larval planct6nica y finalmente una fase juvenil y una adulta, ambas bent6nicas en igual o diferente ambiente . Muy frecuentemente [as historias de vida de los organismos son referidas como rigidamente definidas para cada especie, sin embargo existen numerosos ejemplos en invertebrados donde las caracteristicas del desarrollo y la reproducci6n de una especie son ampliamente influenciadas y...
Tipo: Theses and Dissertations
Palavras-chave: Salinity effects; Temperature effects; Life cycle; Comparative studies; Larval development; Embryonic development; Feeding; Reproduction; Seasonal variations; Feeding; Embryonic development; Life cycle; Reproduction; Http://aims.fao.org/aos/agrovoc/c_2838; Http://aims.fao.org/aos/agrovoc/c_2545; Http://aims.fao.org/aos/agrovoc/c_4317; Http://aims.fao.org/aos/agrovoc/c_6507.
Ano: 2001
URL: http://hdl.handle.net/1834/2972

El dorado, Salminus maxillosus (Pisces, Characiformes)en el Río de la Plata y Río Uruguay inferior
Provedor de dados: 20
Autores: Sverlij, S.B.; Espinach Ros, A.
Catch per unit effort (CPUE), lenght distribution, age, growth, reproduction, migrations and feeding were studies through samples collected with longlines and a gang of gill-nets of several mesh size. CPUE data showed a progressive decrease of the relative abundance in the Río de la Plata, during the study period. Age was studied from scales. Back-calculations of growth revealed the pressence of Lee's phenomenon. Means lenghts at age were greater in females. No significant difference was found in lenght-weight regressions from both sexes and sampling areas. Only young individuals from 1 to 6 years were caught. None of the fish studied had ripening gonads. Extensive migrations were recorded both in the Paraná and Uruguay rivers. Stomach contents analysis...
Tipo: Journal Contribution
Palavras-chave: Migrations; Catch/effort; Sex ratio; Size distribution; Scale reading; Growth curves; Reproduction; Stomach content; Sex ratio; Reproduction; Http://aims.fao.org/aos/agrovoc/c_7014; Http://aims.fao.org/aos/agrovoc/c_6507.
Ano: 1986
URL: http://hdl.handle.net/1834/2032

L'anchois &lt;Engraulis encrasicolus&gt; des côtes nord de la Tunisie: reproduction et exploitation.
Provedor de dados: 20
Autores: Khemiri, S.; Gaamour, A.; Mili, S.; Ben Abdallah, L.
التكاثر والاستغلال - يهتم هذا العمل بدراسة معطيات التكاثر، الضرورية لحسن التصرف في المخزون، وبتحليل إنتاج الصيد البحري لسمك الأنشوة بالسواحل الشمالية لتونس. بالنسبة لجملة العينات يتساوى عدد الإناث والذكور مع العلم أن نسبة كل جنس تتغير حسب طول السمكة. يتكاثر سمك الأنشوة خلال الفترة الممتدة من أفريل إلى أكتوبر مع وجود اختلال بين الأفراد. يبلغ سمك الأنشوة نضجه الجنسي الأول لطول يناهز 7.3 صم. يفوق المخزون المتاح استغلاله من سمك الأنشوة الكميات المنزلة بمواني الصيد البحري، تبعا لذلك فإن سمك الأنشوة بالشمال التونسي دون الاستغلال الأمثل.
Tipo: Journal Contribution
Palavras-chave: Catch statistics; Reproduction; Sex ratio; Sexual maturity; Reproduction; Sex ratio; Sexual maturity; Http://aims.fao.org/aos/agrovoc/c_6507; Http://aims.fao.org/aos/agrovoc/c_7014; Http://aims.fao.org/aos/agrovoc/c_7016.
Ano: 2004
URL: http://hdl.handle.net/1834/1154

Aspectos biológicos del calamar Illex argentinus
Provedor de dados: 20
Autores: Leta, H.R.
La creciente importancia que los recursos de calamar han adquirido en 105 últimos 30 años, los sitúa actualmente entre los más importantes recursos pesqueros del mundo. En consecuencia, paises tradicionalmente no explotadores o consumidores de productos de calamar, han orientado sus esfuerzos hacia el logro de un mejor conocimiento de las especies de cefalópodos que habitan su ambiente marino. En este sentido el aporte de disciplinas tales como la biología ha sido decisivo para desarrollar en forma exitosa pesquerías de calamar, entre otras.El programa de investigaciones del Instituto Nacional de Pesca para 1980 incluyó el estudio integral de la explotación de los calamares como un primer paso hacia el desarrollo de una pesquería del recurso.  Este trabajo...
Tipo: Report
Palavras-chave: Biology; Environmental conditions; Population structure; Spawning; Spawning grounds; Sex ratio; Sexual maturity; Reproduction; Length; Behaviour; Migrations; Growth; Population structure; Spawning; Length; Growth; Biology; Environmental conditions; Spawning grounds; Sex ratio; Sexual maturity; Reproduction; Behaviour; Http://aims.fao.org/aos/agrovoc/c_6115; Http://aims.fao.org/aos/agrovoc/c_14490; Http://aims.fao.org/aos/agrovoc/c_4260; Http://aims.fao.org/aos/agrovoc/c_3394; Http://aims.fao.org/aos/agrovoc/c_925; Http://aims.fao.org/aos/agrovoc/c_32980; Http://aims.fao.org/aos/agrovoc/c_7277; Http://aims.fao.org/aos/agrovoc/c_7014; Http://aims.fao.org/aos/agrovoc/c_7016; Http://aims.fao.org/aos/agrovoc/c_6507; Http://aims.fao.org/aos/agrovoc/c_868.
Ano: 1981
URL: http://hdl.handle.net/1834/2563

Evaluación del stock desovante de anchoveta en la I y II Regiones, año 2003
Provedor de dados: 20
Autores: Braun, M.; Claramunt, G.; Reyes, H.; Catasti, V.; Montenegro, C.; Baros, V.; Díaz, E.; Pizarro, J.; Pizarro, P.
El informe contiene los resultados correspondientes al desarrollo del crucero Módulo huevos y Módulo adultos del Proyecto FIP 2003-07. De conformidad con la metodología planteada en la propuesta técnica y con el fin de estimar los parámetros biológicos que requiere la aplicación del Método de Producción de Huevos, a saber: fecundidad media poblacional, frecuencia de desove, proporción sexual, producción diaria de huevos y peso estimado de hembras maduras, se realizaron los respectivos muestreos para el recurso anchoveta, durante el período de máxima actividad reproductiva del año 2003.
Tipo: Report
Palavras-chave: Stock assessment; Reproduction; Eggs; Fecundity; Pelagic fisheries; Spawning; Eggs; Stock assessment; Spawning; Reproduction; Fecundity; Pelagic fisheries; Http://aims.fao.org/aos/agrovoc/c_2502; Http://aims.fao.org/aos/agrovoc/c_24251; Http://aims.fao.org/aos/agrovoc/c_14490; Http://aims.fao.org/aos/agrovoc/c_6507; Http://aims.fao.org/aos/agrovoc/c_15725; Http://aims.fao.org/aos/agrovoc/c_5659.
Ano: 2004
URL: http://hdl.handle.net/1834/1732

Ecología reproductiva de tres batoideos (Chondrichthyes): iAtlantoraja castelnaui (Rajidae), Rioraja agassizi (Rajidae) y Zapteryx brevirostris (Rhinobatidae). Implicancias de distintas estrategias reproductivas en un escenario de explotación comercial intensiva
Provedor de dados: 20
Autores: Colonello, J.H.
The reproductive ecology of the Chondrichthyans Atlantoraja castelnaui (spotback skate), Rioraja agassizi (rio skate) and iZapteryx brevirostris (lesser guitarfish) is analyzed in this study. The two first are oviparous species that attain 168 mm and 768 mm of maximum total length (MTL), respectively. The third is a viviparous lecitotrophic ray that grows to a MTL of 720 mm. The examined material came from the purchase of samples in the Mar del Plata Port (Buenos Aires prov., Argentina) and from research cruises carried out by the National Institute of Fisheries Research and Development (INIDEP). Two work lines were developed to analyze the reproductive ecology and to validate the reproductive stages of these species, one based on macroscopic analysis of...
Tipo: Theses and Dissertations
Palavras-chave: Marine fish; Reproduction; Animal reproductive organs; Sexual maturity; Histology; Reproduction; Animal reproductive organs; Sexual maturity; Http://aims.fao.org/aos/agrovoc/c_6507; Http://aims.fao.org/aos/agrovoc/c_29449; Http://aims.fao.org/aos/agrovoc/c_7016.
Ano: 2009
URL: http://hdl.handle.net/1834/3546

Reproducción de la corvina rubia Micropogonias furnieri del sector rioplatense. Su relación con los gradientes horizontales de salinidad.
Provedor de dados: 20
Autores: Macchi, G.J.
Reproduction of white croaker collected during 1991-1993 in the Argentine-Uruguayan Common Fishing Zone (CFZ)(34°-39°30'S), was studied by means of histological analysis of ovaries. Areal and seasonal maturity stage distributions were compared; ripeness degree was correlated to horizontal salinity gradients. During June and July an overall predominance of the resting stage was observed; nevertheless, a high proportion of females in early maturation was detected near Cabo San Antonio and Punta Piedras. In late October-early November an increase of maturing individuals was observed. Females in advanced maturity stage and partially spent,with postovulatory follicles, were collected mainly in estuarine waters with wide bottom salinity ranges (between 9-25...
Tipo: Journal Contribution
Palavras-chave: Ovaries; Salinity effects; Estuarine front; Reproduction; Salinity gradients; Sexual maturity; Fronts; Ovaries; Reproduction; Sexual maturity; Http://aims.fao.org/aos/agrovoc/c_5456; Http://aims.fao.org/aos/agrovoc/c_6507; Http://aims.fao.org/aos/agrovoc/c_7016.
Ano: 1997
URL: http://hdl.handle.net/1834/1932

Biología reproductiva comparada de especies de la familia Sciaenidae en aguas del Río de la Plata y Costa Bonaerense
Provedor de dados: 20
Autores: Militelli, M.I.
In the Argentine Sea (SW Atlantic), particularly in the Bonaerense Coastal Zone there are two frontal zones, the waterfront area of the Rio de la Plata and the southern area of the province called El Rincón. The fauna of the Bonaerense Coastal Area has its own characteristics and in the case of fish is defined by dominant species, as is the whole of Sciaenidae family composed of seven species: white mouth croaker (Micropogonias furnieri), striped weakfish (Cynoscion guatucupa), king weakfish (Macrodon ancylodon), black drum (Pogonias cromis), Argentine croaker (Umbrina canosai), drum (Paralonchurus brasiliensis) and southern kingfish (Menticirrhus americanus). In the present work is discussed in a comparative way various aspects of the reproductive cycle...
Tipo: Theses and Dissertations
Palavras-chave: Brackishwater fish; Reproduction; Spawning grounds; Coastal waters; Fronts; Environmental conditions; Histology; Reproduction; Spawning grounds; Coastal waters; Environmental conditions; Http://aims.fao.org/aos/agrovoc/c_6507; Http://aims.fao.org/aos/agrovoc/c_7277; Http://aims.fao.org/aos/agrovoc/c_25205; Http://aims.fao.org/aos/agrovoc/c_32980.
Ano: 2007
URL: http://hdl.handle.net/1834/3549