SABIIA - Sistema Aberto e Integrado de Informação em Agricultura (Sabiia)

La pesquería de arrastre del camarón pomada (Protrachypene precipua) en la zona de Posorja-Ecuador durante 2008

Charry, H.; Alvarado, E.M.; Sánchez, J.A..

The skeletal growth of the scleractinian corals Diploria labyrinthiformis (Linnaeus 1758) and Montastraea annularis (Ellis and Solander 1786) from Isla Grande (north of Rosario islands), Colombian Caribbean, was determined from annual extension increments revealed by X-radiography of 4-6 mm thick slabs obtained along the axis of maximum growth. The skeletal extension average rate for the last 22 years for D. labyrinthiformis was 3.8 mm year-1 (SE 0.10; N = 87). The correlation between growth of D. labyrinthiformi s and hours of sunlight was significantly negative. The annual variances of sunlight enhanced annual statistically significant differences of growth in this species. M. annularis showed an average extension growth of 10.6 mm year-1 (SE 0.32; N =...

Tipo: Journal Contribution

Palavras-chave: Growth rate; Coral reefs; Coral reefs; Growth rate; Http://aims.fao.org/aos/agrovoc/c_1880; Http://aims.fao.org/aos/agrovoc/c_16130.

Ano: 2004

URL: http://hdl.handle.net/1834/3077

Etude comparative du cycle sexuel et de la relation taille-poids de deaux espèces d'athérine en Tunisie

Chicaiza, D.; García-Sáenz, R.; Mendívez, W..

El desembarque total estimado durante 2008 por parte de la flota arrastrera pomadera en la zona de Posorja fue de 5 704 toneladas, existiendo un decremento del 3.3 %, con respecto al 2007. La CPUE promedio fue de 1 282 libras/barco/día. Se analizaron 2 008 individuos, de los cuales 42 % fueron machos y 58 % hembras. Entre abril y mayo se registraron altas capturas de individuos que aún no han alcanzado su madurez sexual (juveniles), coincidiendo con el periodo de mayor desembarque, comportamiento similar en los últimos cuatro años, (periodo de reclutamiento a la pesca). La talla media de madurez sexual fue de 7.6 cm LT alcanzada a los seis meses aproximadamente. Los parámetros de crecimiento estimados para 2008 fueron: K = 1,01 años-1 y L∞ = 10,3 cm (LT),...

Tipo: Journal Contribution

Palavras-chave: Trawlers; Landing statistics; Growth rate; Catch/effort; Sexual maturity.

Ano: 2009

URL: http://hdl.handle.net/1834/4782

Tasa de crecimiento de Anadara tuberculosa (Sowerby, 1833) (Bivalvia: Arcidae) en la reserva ecológica manglares Cayapas-Mataje (REMACAM): Un análisis basado en sistemas de cajas suspendidas

Bouriga, N.; Cherif, M.; Hajjej, Gh.; Guignard, J-P.; Faure, E.; Trabelsi, M..

Le présent travail porte sur l’étude des caractères biométriques des athérines de Tunisie pour compléter les études métriques et méristiques établies auparavant. L’objectif principal de cette étude, est de comparer les paramètres biologiques via l’analyse de la croissance et de la reproduction de Atherina boyeri (côtes nord tunisiennes) et Atherina lagunae (île Kerkennah). L’étude de la sex-ratio en fonction des mois a montré que les femelles sont toujours plus nombreuses que les mâles pour les espèces d’athérines. En effet, la valeur globale de la sex-ratio, toute taille confondue, est en faveur des femelles. L’étude du cycle sexuel des athérines insulaires des îles Kerkennah a montré que la période de reproduction s’établie entre le mois de mars et le...

Tipo: Journal Contribution

Palavras-chave: Coastal lagoons; Sex ratio; Growth rate; Length-weight relationships; Spawning seasons.

Ano: 2010

URL: http://hdl.handle.net/1834/4693

Crecimiento poblacional del rotifero nativo Brachionus sp. “Cayman”, al evaluar diferentes microalgas como alimento

Flores, L..

La tasa de crecimiento y el incremento neto de crecimiento de Anadara tuberculosa fue estudiada por medio de muestreos mensuales en sistemas de cultivo entre el 2002 y 2003 en la Comunidad El Bajito en la REMACAM. Ocho cajas suspendidas fueron utilizadas, cuatro con conchas entre los 30 y 34.9 mm y cuatro con conchas entre los 35 y 39.9 mm. No se encontraron diferencias significativas entre cada uno de los sistemas de acuerdo a cada uno de los rangos de tallas utilizados, lo que permitió establecer incrementos netos entre los 10.17 a 11.99 mm y de 8.55 a 10.68 mm, respectivamente. El periodo de mayor crecimiento de A. tuberculosa fue de octubre hasta abril. Se estimaron tasas de crecimiento mensual que variaron de 0.01 a 1.94 mm mes"-1 en el primer caso y...

Tipo: Journal Contribution

Palavras-chave: Growth rate; Shells; Experimental culture.

Ano: 2010

URL: http://hdl.handle.net/1834/4838

Panulirus argus postlarva performance fed with fresh squid

Cisneros, R..

Se estudió el crecimiento poblacional de la cepa Brachionus sp. “Cayman”, cepa Chilca, Perú, en respuesta a diferentes tratamientos con microalgas: Isochrysis galbana (T1), Chaetoceros gracilis (T2), Nannochloropsis oculata (T3), Isochrysis galbana + Chaetoceros gracilis + Nannochloris maculata (T4), Isochrysis galbana + Nannochloris maculata + Nannochloropsis oculata (T5) y Nannochloris maculata (T6). Se evaluó la densidad final de la población (DF), tasa de crecimiento (TC) y productividad (R). Los resultados mostraron diferencias estadísticas entre los tratamientos, encontrándose que T5 presentó mejores resultados en cuanto a DF (190 ± 5,51 indiv.mL-1), TC (0,40 ± 0,01 día-1) y R (38 080 ± 1,53 rot.L-1.día-1).

Tipo: Journal Contribution

Palavras-chave: Growth rate; Productivity; Algae resources; Rotifers; Productivity.

Ano: 2012

URL: http://hdl.handle.net/1834/5718

Rodríguez-Viera, L.; Perera, E..

There is a great interest in the growout of spiny lobster postlarva captured in the wild. This activity has been developed rapidly in Asia and especially in Vietnam. However, lack of appropriated formulated diets remains the main constrain to the sustainable expansion of this activity worldwide. Until now, best growth rates have been obtained with the use of high inclusion of krill meal and/or krill hydrolysates which are expensive. However, squid is today avoided as food ingredient due to low digestibility reported. Also, fresh squid has been demonstrated to produce poor growth performance in temperate lobsters, but there is no report for P. argus fed exclusive on fresh squid. This work examines the effect of fresh squid on growth of P. argus...

Tipo: Journal Contribution

Palavras-chave: Diets; Growth rate; Squid culture.

Ano: 2012

URL: http://hdl.handle.net/1834/4536

Regulación denso-dependiente del crecimiento individual de la almeja púrpura (Amiantis purpurata, Lamarck 1818)

Pappalardo, M.P.; Morsan, E.M..

In this study we analyze growth, mortality and estimated biomass trend of purple clam, Amiantis purpurata, population placed in Playa Villarino, (Northern San Matias gulf, Argentina) in the southern most boundary of its geographical distribution. Previously, the population structure was described composed by three consecutive cohorts settled among 1978-1980, and the individual growth rate showed high spatial variability. The hypothesis to test in this study is that growth rate is regulated by local biomass. We choice four sites with different densities, to assess growth rate, natural mortality and retrospective estimated biomass trend. During February 2003, densities and growth rate (using external growth bands measurements) were analyzed matching with a...

Tipo: Journal Contribution

Palavras-chave: Growth rate; Clam fisheries; Mortality; Growth curves; Density dependence; Biomass; Growth; Biomass.

Ano: 2005

URL: http://hdl.handle.net/1834/4385

Características biológicas y de la pesca del savorín Seriolella porosa (Pisces: Centrolophidae) del Mar Argentino

Garciarena, A.D.; Perrotta, R.G..

Length growth parameters were calculated and total length-weight and total length-fork length relationships, which showed no differences between sexes, were fitted for the South Atlantic bream (Seriolella porosa). Length at first maturity was also calculated. The results were as follows: L (mm)= 490.96k years-¹) = 0.154; t0 (years)= -3.915; W(g) = 4*10-6)*TL³.1989; FL(mm) = 0.8917*TL1.0006);L sub 50 (mm)= 290.61. Natural mortality was estimated at 0.274 and limit age at 11 years. Samples were taken during research surveys carried out in 1999 and 2000 in the Argentine Sea (Atlantic SW). Sagittae otoliths of 374 specimen were used for age determination. Total fish length ranged from 226 mm to 550 mm (1-14 years). Commercial landing data of trawl fleets for...

Tipo: Journal Contribution

Palavras-chave: Growth rate; Natural mortality; Length-weight relationships; Catch/effort; Landing statistics; Fishery biology; Fishery resources; Growth rate; Fishery biology; Fishery resources; Http://aims.fao.org/aos/agrovoc/c_16130; Http://aims.fao.org/aos/agrovoc/c_2937; Http://aims.fao.org/aos/agrovoc/c_2942.

Ano: 2002

URL: http://hdl.handle.net/1834/2416

Evaluación de diferentes densidades de la microalga Nannochloropsis oculata como alimento Paraartemia

Crecimiento y rendimiento en carne del Lenguado Paralichthys orbignyanus (Valenciennes, 1839) cultivado en Argentina

Tizol-C., Rafael.

Laboratory experimente were carried out to determine the possibility of using the microalgae Nannochloropsis oculata as a food source for brine shirmp. Among the range concentrations studied (3 x 105 to 14 x 105 cells/ml), 12 x 105 cells/ml offered the best resulte of survival and growth rate and it is recommended as the most effective. From correlation matrix, high valúes (r > 0.90; a = 0.05) were obtained for the relation of microalgae concentration and survival, growth rate and the variation of average lenght. The mínimum cellular concentration of microalgae which is necessary for brine shrimp culture ¡s 5.6 x 105 cells/ml

Tipo: Journal Contribution

Palavras-chave: Density; Food; Growth rate; Food; Density; Growth rate; Http://aims.fao.org/aos/agrovoc/c_9001003; Http://aims.fao.org/aos/agrovoc/c_2186; Http://aims.fao.org/aos/agrovoc/c_16130.

Ano: 1994

URL: http://hdl.handle.net/1834/3771

Pesca de la flota arrastrera camaronera en Esmeraldas-Ecuador durante el 2008

Müller, M.I.; Radonic, M.; López, A.V.; Bambill, G.A..

The results of the final on-growing (500 g to 1 kg)of flounder Paralichthys orbignyanus under closed recirculated water systems and controlled conditions are presented. 22.5 percent of fish reached 1 kg alter 2.1 months of starting the on-growing trial. Sex ratio was 20.6 percent females and 79.4 percent males. Average length for females and males was 38.53 ± 4.58 cm TL and 32.52 ± 5.25 cm TL, respectively. Average body weight for females and males was 710.58 ± 262.95 g and 427.59 ± 203.01 g, respectively. Statistically significant differences were found for average length for sex (p0.01)and for average body weight for sex (0.01 0.05). Flesh yield was 43.1percent fillets without skin and 57percent fillets with skin. Flesh of cultivated flounder had a...

Tipo: Proceedings Paper

Palavras-chave: Fish culture; Marine fish; Growth rate; Feeding; Fish culture; Feeding; Growth rate; Http://aims.fao.org/aos/agrovoc/c_2918; Http://aims.fao.org/aos/agrovoc/c_2838; Http://aims.fao.org/aos/agrovoc/c_16130.

Ano: 2006

URL: http://hdl.handle.net/1834/1570

Primeras observaciones sobre el crecimiento de Bagre negro (Rhamdia sapo)

García-Sáez, R.; Mendívez, W.; Chicaiza, D..

De enero a diciembre de 2008 la flota arrastrera camaronera de Esmeraldas desembarcó un total de 322,3 t, el cual representó un decremento del 21.3 % con relación al 2007. Para la obtención de esta información se utilizó encuestas pesqueras (zonas y días efectivos de pesca, desembarques etc.) y biológicas (sexo, estadio gonadal y talla). La flota activa promedio estuvo compuesta por 19 barcos arrastreros camaroneros. La principal especie desembarcada fue el camarón café (Farfantepenaeus californiensis) la cual presentó un rango de tallas de captura entre 12,0 y 20,5 cm (LT), seguido del camarón rojo (F. brevirostris). En esta zona se registró un predominio de individuos hembras en estadio vacía e inmadura.

Tipo: Journal Contribution

Palavras-chave: Trawlers; Landing statistics; Sexual maturity; Growth rate; Shrimp fisheries; Prawn fisheries.

Ano: 2009

URL: http://hdl.handle.net/1834/4783

Aspectos biológicos y pesqueros de los principales peces del sistema hídrico de la provincia de Los Ríos, durante 2009

Varela, Zoel; Fischer, Knud; Chediak, Gustavo.

Se describen las primeras experiencias llevadas a cabo con el fin de determinar tasas de crecimiento del bagre negro (Rhamdia sapo) en condiciones de cultivo. En una primera experiencia se sembraron alevines (10 - 50 g) a densidades entre 25.000 y 60.000 ejemplares por hectárea, densidades normalmente empleadas para las últimas fases de alevinaje. Se estableció la relación entre el tamaño inicial y la tasa específica de crecimiento (TEC) así como también se determinó el crecimiento diario absoluto para los distintos tamaños. En una segunda experiencia se sembraron peces (112 g) a densidades de 6.000, 8.000 y 10.000 ejemplares por hectárea para realizar pruebas de producción. Esta experiencia se llevó a cabo en las estaciones de otoño e invierno. El...

Tipo: Report

Palavras-chave: Growth rate; Fish culture; Freshwater aquaculture; Feed conversion rate.

Ano: 1982

URL: http://hdl.handle.net/1834/4914

Capacité de l'espace côtier face a la croissance des usages : problèmes et strategies

Revelo, W..

Durante el 2009 (excepto mayo, agosto y septiembre), se analizaron un total de 3 772 especímenes de peces conformados por 16 especies, predominando la dica con 1561 individuos (42,3%), las menos capturadas fueron róbalo y chame con un individuo cada una (0,03%). La proporción de sexo macho hembra, talla promedio de captura y media de madurez sexual de las principales especies de peces fue: dama (1: 1,16; 23,7 y 20 cm LT), dica (1: 1,15; 17,3 y 16 cm LT), guanchiche (1: 1,2; 29 y 20 cm LT), ratón (1: 1,25; 23,5 y 19 cm LT) y bocachico (1:1,06; 21,6 y 20 cm LT). En los estadios de madurez sexual, la mayoría de las especies se encontraron en estadio I y II correspondientes a individuos hembras inmaduras; sin embargo, para el guanchiche predominaron las...

Tipo: Journal Contribution

Palavras-chave: Rivers; Species diversity; Sexual maturity; Growth rate; Catch composition; Freshwater fish.

Ano: 2010

URL: http://hdl.handle.net/1834/4790

Madurez reproductiva y crecimiento del pulpito tehuelche Octopus tehuelchus en distintos sectores del Golfo San Matías

Blivi, A.B..

En Afrique de l'Ouest, particulièrement dans le golfe du Bénin, les grandes villes, Accra, Lomé, Cotonou, Lagos se localisent dans la zone côtière de cordons assez étroits associés à des milieux lagunaires et de vasières relativement importants. Les progrès de modernisation y sont marqués par les installations d'industries de tout genre autour des ports, par le développement des zones d'habitats de caractère formel et informel dû à la croissance de la population et par les nombreuses activités économiques. Cette dynamique se poursuit dans la zone côtière qui continue d'être utilisée presque sans programme de planification et de développement. Les nombreuses ressources socio-économiques évoluent rapidement et attestent le dépassement des possibilités...

Tipo: Journal Contribution

Palavras-chave: Growth rate; Harbours Coastal zone Population number Population dynamics Population dynamics http://aims.fao.org/aos/agrovoc/c_6111.

Ano: 1999

URL: http://hdl.handle.net/1834/1238

Storero, L.P.; Ocampo Reinaldo, M.; Narvarte, M.A..

En el informe se presenta la evolución de la madurez reproductiva a lo largo de un ciclo anual y se realiza un análisis preliminar del crecimiento del pulpito tehuelche en distintos sectores del Golfo San Matías. La información se recolectó entre 2005 y 2007 en los sitios El Fuerte, Islote Lobos y Bahía de San Antonio. Se observan diferencias en el periodo de madurez entre los sitios. El crecimiento del pulpito muestra una marcada estacionalidad con crecimiento lento durante el invierno. Además, no se observan diferencias en el crecimiento entre sexos pero si entre los sitios analizados. Se sugieren medidas de manejo para los sitios explotados artesanalmente

Tipo: Report

Palavras-chave: Reproduction; Growth rate; Sexual maturity; Artisanal fishing; Reproduction; Growth rate.

Ano: 2008

URL: http://hdl.handle.net/1834/4383

The influence of light on the growth rate of larvae of the brine shrimp, <i>Artemia salina</i> L.

OMA

Sorgeloos, P..

<i>Artemia salina</i> L. larvae grown in complete darkness showed a significant higher growth rate than those cultured under continuous illumination.

Growth and biomass allocation of the C4 grasses Brachiaria brizantha and B. humidicola under shade

Palavras-chave: Growth rate; Larvae; Light effects; Artemia salina.

Ano: 1972

URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=3458

DIAS-FILHO,MOACYR BERNARDINO.

The growth and biomass allocation responses of the tropical forage grasses Brachiaria brizantha cv. Marandu and B. humidicola were compared for plants grown outdoors, in pots, in full sunlight and those shaded to 30% of full sunlight over a 30day period. The objective was to evaluate the acclimation capacity of these species to low light. Both species were able to quickly develop phenotypic adjustments in response to low light. Specific leaf area and leaf area ratio were higher for low-light plants during the entire experimental period. Low-light plants allocated significantly less biomass to root and more to leaf tissue than high-light plants. However, the biomass allocation pattern to culms was different for the two species under low light: it increased...

Physiological and morphological responces of Brachiaria spp. to flooding

Palavras-chave: Specific leaf area; Growth rate; Pastures; Light regimes.

Ano: 2000

URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2000001200003

DIAS-FILHO,MOACYR BERNARDINO; CARVALHO,CLÁUDIO JOSÉ REIS DE.

The physiological and morphological responses of the forage grasses Brachiaria brizantha cv. Marandu, B. decumbens and B. humidicola were compared for plants grown in pots under flooding and well-drained conditions for 14 days. Flooding reduced specific leaf area and biomass allocation to roots in all species and enhanced leaf senescence in B. brizantha and B. decumbens. Relative growth rate was reduced by flooding in B. brizantha and B. decumbens, but not in B. humidicola.Leaf elongation rate was unaffected by flooding in B. decumbens and B. humidicola, but declined in B. brizantha since the first day of flooding. Net photosynthesis and leaf chlorophyll content were reduced by flooding in B. brizantha; however, no flooding effect could be detected in the...

Growth of champa fruit under agroecological conditions of Miraflores, Boyacá, Colombia

Palavras-chave: Brachiaria brizantha; Brachiaria decumbens; Brachiaria humidicola; Leaf area; Chlorophyll; Photosynthesis; Biomass; Growth rate.

Ano: 2000

URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2000001000006

Balaguera-López,Helber Enrique; Arévalo,Aníbal Herrera; Cortés-Moreno,Daniel.

The objective of this work was to analyze the growth of champa fruit (Campomanesia lineatifolia) as a function of growing-degree days (GDD) in the municipality of Miraflores, in Boyacá, Colombia. Thirty trees were selected at random, and 100 flowers in full bloom were marked in each tree. From the 26th day after flowering until harvest, 10 samples were taken every 15 days to determine the fruit parameters and growth rate. Temperature was recorded to calculate the GDD. From flowering until harvest, 1,489.1 GDD were accumulated over 145 days. Dry and fresh matter mass of pulp, seed, and total fruit were fitted to a logistic growth model, and three growth stages (S1, S2 and S3) were defined. In the S1, growth was slow, and the relative growth remained nearly...

Infrared thermometry to schedule irrigation of common bean

Palavras-chave: Myrtaceae; Growth rate; Tropical fruits.

Ano: 2012

URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2012001200007

Lobo,Francisco de Almeida; Oliva,Marco Antonio; Resende,Morethson; Lopes,Nei Fernandes; Maestri,Moacyr.

The objective of this work was to determine the critical irrigation time for common bean (Phaseolus vulgaris L. cv. Carioca) using infrared thermometry. Five treatments were analyzed. Canopy temperature differences between plants and a well-watered control about 1, 2, 3, 4, and 5±0.5ºC were tested. Physiological variables and plant growth were analyzed to establish the best time to irrigate. There was a significant linear correlation between the index and stomatal resistance, transpiration rate, and leaf water potential. Although significant linear correlation between the index and mean values of total dry matter, absolute growth rate, and leaf area index was found, no correlation was found with other growth index like relative growth rate, net...