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Abundancia relativa y rendimiento máximo sostenible de la merluza común (Merluccius hubbsi) OceanDocs
Otero, H.O..
The statistics provided by the Argentinean Fishing Vessel and the biological data collected by scientist in the last eleven years, allow us to estimate different aspects of the population dynamics of the common hake (Merluccius hubbsi). This work deals with the relative abundance and the maximal sustainable yield of this species, considering the bonaerense stock of the Southewest Atlantic. Analyzing the effective fishing density, concluding remarks can be made. The high catches of 1967 (more than 600.000 tons.)made by the Russian Fleet, affected the fishing density in 1968. Since 1969, the resource recovered the high density level as a consequence of a decrease in the catches and in the fishing effort, but vulnerability of the stock is shown.
Tipo: Journal Contribution Palavras-chave: Catch/effort; Potential yield; Hake fisheries.
Ano: 1980 URL: http://hdl.handle.net/1834/5456
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Abundancia relativa y rendimiento máximo sostenible de la merluza común (Merluccius hubbsi) OceanDocs
Otero, H.O..
The statistics provided by the Argentinean Fishing Vessel and the biological data collected by scientist in the last eleven years, allow us to estimate different aspects of the population dynamics of the common hake (Merluccius hubbsi). This work deals with the relative abundance and the maximal sustainable yield of this species, considering the bonaerense stock of the Southewest Atlantic. Analyzing the effective fishing density, concluding remarks can be made. The high catches of 1967 (more than 600.000 tons.)made by the Russian Fleet, affected the fishing density in 1968. Since 1969, the resource recovered the high density level as a consequence of a decrease in the catches and in the fishing effort, but vulnerability of the stock is shown.
Tipo: Journal Contribution Palavras-chave: Catch/effort; Potential yield; Hake fisheries.
Ano: 1980 URL: http://hdl.handle.net/1834/2061
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Abundancia, reproducción y distribucion de tallas del gatuzo Mustelus schmitti en la Zona Comun de Pesca Argentino-Uruguaya y en el Rincón. Noviembre, 1994 OceanDocs
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
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Abundancia y distribución del delfín (Tursiops truncatus, Montagu, 1821) en la costa norte de la provincia de Matanzas, Cuba OceanDocs
González-Sansón, G.; López, N.; Pérez-Cao, H.; Blanco, M.; Lio, V..
Entre junio del 2002 y agosto del 2003 se evaluó la abundancia y distribución de delfines toninas (Tursiops truncatus) en la costa norte de la provincia de Matanzas. Fue empleada la técnica de muestreo a distancia durante seis salidas, en las cuales se recorrieron 1 553,3 Km en 164 horas de esfuerzo. Se analizaron las diferencias en abundancia de delfines por zonas (Costa Norte, Bahía de Cárdenas, Cinco Leguas), estaciones y horario del día y su relación con la temperatura del agua y el estado de la marea. Se observaron 253 delfines en 34 avistamientos. El tamaño de grupo más frecuente fue de ocho individuos. El mayor número de avistamientos realizados ocurrió en la en la parte norte del área de estudio. No se detectaron diferencias estadísticas en la...
Tipo: Journal Contribution Palavras-chave: 1371; Abundance; Distribution; Tursiops truncatus; Distribution.
Ano: 2009 URL: http://hdl.handle.net/1834/4118
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Abundancia y distribución del ictioplancton, fito y zooplancton en el mar ecuatoriano en abril de 1995 OceanDocs
Luzuriaga de Cruz, M.; Elías, E.; Flores, M.E..
El presente trabajo trata de la distribución de la abundancia de huevos y larvas de peces en relación con la abundancia del zooplancton y fitoplancton colectado en 13 estaciones muestreadas a bordo del B/I TOHALLI durante el crucero pelágico-oceanográfico realizado en abril de 1995. Se analizó un total de 12820 huevos de peces. (10m²)¹ y 5145 larvas de peces (10m²)¹. La mayor abundancia de huevos y larvas de peces se localizó al este de las Islas Galápagos, en las estaciones 1P y 10, situadas en los extremos norte y sur del área de muestreo a la altura de la Isla San Cristóbal, con 5226 huevos (10m²)¹ y 1042 larvas (10m²)¹, respectivamente, mientras que la menor abundancia se localizó también al este de la Islas Galápagos, en las estaciones 7 y 5 con 109...
Tipo: Journal Contribution Palavras-chave: Abundance; Ichthyoplankton; Phytoplankton; Zooplankton; Cruises; Fish eggs; Fish larvae; Phytoplankton; Zooplankton; Fish larvae; Http://aims.fao.org/aos/agrovoc/c_13344; Http://aims.fao.org/aos/agrovoc/c_15490; Http://aims.fao.org/aos/agrovoc/c_2924.
Ano: 1998 URL: http://hdl.handle.net/1834/2278
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Abundancia y distribución del pepino de mar Isostichopus badionotus (Aspidochirota: Stichopodidae), en seis localidades de pesca al norte de la Isla la Juventud, Cuba OceanDocs
Ortega, M.; Alfonso, I..
El presente trabajo comprende un estudio de la abundancia y distribución del pepino de mar I. badionotus, en seis localidades de pesca de la región norte de la Isla de la Juventud, Cuba, durante los años 2006 y 2007. En el 2006 se muestrearon los meses de septiembre y octubre y en el 2007, enero, finales de julio-principios de agosto y septiembre. La abundancia se determinó mediante transeptos lineales (100 x 2 m), en los que se capturaron todos los individuos presentes. Los datos de la pesquería expresados en Captura por Unidad de Esfuerzo (CPUE) se convirtieron a individuos por hectárea (ind./ha) para facilitar las comparaciones con las capturas ejercidas en cada año. Se empleó la prueba no paramétrica “U” de Mann y Whitney ( = 0,05) para determinar...
Tipo: Journal Contribution Palavras-chave: Abundance; Distribution.
Ano: 2012 URL: http://hdl.handle.net/1834/4661
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Abundancia y madurez sexual de Anadara Similis en el manglar de Luisico, Bahía Malaga, Pacífico colombiano OceanDocs
Manjarrés Villamil, Alex E.; Lucero Rincón, Carlos H.; Walteros, William O.; Kantera Kintz, Jaime R.; Gil Agudelo, Diego L..
La abundancia y madurez sexual de la piangua Anadara similis fue analizada mensualmente entre septiembre de 2009 y agosto de 2010 en el archipiélago de La Plata, Bahía Málaga, Pacífico colombiano. La madurez sexual se analizó a nivel macroscópico mediante la observación del tejido reproductivo en fresco y microscópico por medio de métodos histológicos estándares. Se estimó una densidad media de 0.130 ± 0.098 ind/m2 y una talla media de 42.30 ± 5.00 mm. Los meses de mayor densidad fueron mayo (0.295 ind/m2) y agosto (0.195 ind/m2). La talla media de madurez sexual fue de 41.8 ± 4.5 mm y talla media de 41 mm donde 50% de la población ha tenido mínimo un desove (L50%). Se registraron picos máximos reproductivos durante marzo (83.3%) y abril (75.0%), aunque...
Tipo: Journal Contribution Palavras-chave: Density; Hermaphroditism.
Ano: 2013 URL: http://hdl.handle.net/1834/5454
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Acanthifoliosides, minor steroidal saponins from the Caribbean marine sponge Pandaros acanthifolium OceanDocs
Regalado, E.L.; Jiménez-Romero, C.; Genta-Jouve, G.; Tasdemir, D.; Amade, P.; Nogueiras, C.; Thomas, O.P..
Seven novel steroid glycosides, acanthifoliosides A-F (1-6) and the methyl ester of 6 (7), were isolated from the marine sponge Pandaros acanthifolium as minor components. Acanthifoliosides are characterized by a rare C-15 and C-16 oxidized D ring which was previously found in saponins produced by starfishes. Very uncommon is the presence of additional sugar residues at C-15 or C-16. Their structures were determined on the basis of extensive spectroscopic analyses, including two-dimensional NMR and HRESIMS data. The absolute configurations of the aglycones were assigned by comparison between experimental and TDDFT calculated CD spectra of 1, whereas the absolute configurations of the monosaccharide units were determined by chiral GC analyses of the acid...
Tipo: Journal Contribution Palavras-chave: Sponges; Sponges; Http://aims.fao.org/aos/agrovoc/c_7321.
Ano: 2011 URL: http://hdl.handle.net/1834/3866
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Acartia tonsa: a species new for the Black Sea fauna IBSS Repository
Belmonte, G.; Mazzocchi, M.G.; Prusova, I.Yu.; Shadrin, N.V..
The presence of Acartia tonsa in Black Sea waters (South Crimean coast, Ukraine) is reported for the first time. A. tonsa may be a recently introduced species in the Black Sea. Morphological features of the adults have been shown by S.E.M.
Tipo: Journal Contribution
Ano: 1994 URL: http://10.0.0.194:8080/dspace/handle/99011/3849
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Acartia tonsa Dana в Севастопольской бухте: появление, сезонная динамика, размерная структура IBSS Repository
Губанова, А. Д..
Впервые установлено, что Acartia tonsa обитала в Севастопольской бухте уже в 1976 г. До 1994 г, из-за морфологического сходства и близких размеров ее учитывали вместе с A. clausi. Рассмотрены особенности сезонной динамики популяции A. tonsa в сравнении с A. clausi.
Tipo: Journal Contribution
Ano: 2000 URL: http://repository.ibss.org.ua/dspace/handle/99011/1148
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Accumulation of trace metals in some benthic invertebrate and fish species revelant to their concentration in water and sediment of lake qarun, Egypt OceanDocs
Fishar, M.R.A.; Ali, M.H.H..
Concentrations of major metals (Na, K, Ca, Mg) and some trace metals (Fe, Zn, Mn, Ni, Cu, Co, Pb, Cr, Cd) were determined in water, sediment, benthos and some common fish species from Lake Qarun. Water and sediment samples were collected from seven stations where, the benthos and fish species were collected from three sites representing east, middle and west of the lake. Distribution of studied metals showed that, east part generally had higher contamination than west one which may be attributed to the impact of pollution sources in this area which coming from El-Batts Drain and pumping station in the east part. Mollusca and Crustacea especially Barnacles have the highest concentrations of most heavy metals measured more than Polychaeta which make them...
Tipo: Journal Contribution Palavras-chave: Lake Qarun; Trace metals; Benthos; Fish SEDIMENTS Absorption coefficient Accumulation Biochemical analysis Benthic fish Trace metals Absorption http://aims.fao.org/aos/agrovoc/c_27.
Ano: 2005 URL: http://hdl.handle.net/1834/1215
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Acerca del poder de pesca y capturabilidad en la pesquería de caballa (Scomber japonicus) de Mar del Plata OceanDocs
Perrotta, R.G..
Analyzed in this paper is the structure of the fleet applied to mackerel fishing based at Mar del Plata Port (38° LS); an attempt is also made at establishing the best system for measuring the fishing effort; the changes in catch capability (availability and vulnerability)are duly analyzed. Sampling vessels that allow greater data, particulary by in relation to the fishing effort, are available since the 1983/84 fishing season.
Tipo: Journal Contribution Palavras-chave: Catch/effort; Catchability; Fishing fleet.
Ano: 1988 URL: http://hdl.handle.net/1834/1959
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Acondicionamiento y manejo de un banco de reproductores de pargo criollo (Lutjanus analis, Cuvier, 1828). OceanDocs
Llanes, Y.; Reyes, R.; Fernández, N.; Ortega, N..
Some handling practices related to health about finfish culture are analyzed and discussed in this paper. The wild caught broodstocks were cultivated for two years under environment conditions in concrete pond where developed techniques avoided stressful conditions like high stocking densities which may result in compromised fish health, disease and mortality. Marine fish species are also susceptible to many infectious pathogens including parasites. As a result of that, prophylactic bathes have been identified as method of control. Reproductive parameters could have showed due to good managements.
Tipo: Journal Contribution Palavras-chave: Stress (mechanics); Marine fish; Reproductive behaviour; Reproductive behaviour; Http://aims.fao.org/aos/agrovoc/c_37902.
Ano: 2011 URL: http://hdl.handle.net/1834/3961
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Acoustic surveys on the southern blue whiting (Micromesistius australis). OceanDocs
Madirolas, A..
Two joint Argentine-British acoustic surveys specifically targeted on the southern blue whiting (Micromesistius australis) were carried out during September 1994 and 1995. The surveys confirmed the existence of a spawning concentration area located south from San Carlos Strait, in waters south of Malvinas Islands, ASW. The obtained point estimates of blue whiting abundance were 84801 t for the 1994 survey and 140953 t for the 1995 survey. The surveys also provided information on the school structure and behavior as well as some clues about the complex migration pattern of the species.
Tipo: Journal Contribution Palavras-chave: Fishery surveys; Echo surveys; Biomass; Geographical distribution; Target strength; Biomass; Geographical distribution.
Ano: 1999 URL: http://hdl.handle.net/1834/2567
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Acoustic surveys on the southern blue whiting (Micromesistius australis). OceanDocs
Madirolas, A..
Two joint Argentine-British acoustic surveys specifically targeted on the southern blue whiting (Micromesistius australis) were carried out during September 1994 and 1995. The surveys confirmed the existence of a spawning concentration area located south from San Carlos Strait, in waters south of Malvinas Islands, ASW. The obtained point estimates of blue whiting abundance were 84801 t for the 1994 survey and 140953 t for the 1995 survey. The surveys also provided information on the school structure and behavior as well as some clues about the complex migration pattern of the species.
Tipo: Journal Contribution Palavras-chave: Fishery surveys; Echo surveys; Biomass; Geographical distribution; Target strength; Biomass; Geographical distribution; Http://aims.fao.org/aos/agrovoc/c_926; Http://aims.fao.org/aos/agrovoc/c_5083.
Ano: 1999 URL: http://hdl.handle.net/1834/2567
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Acoustical estimation of the Antarctic krill swarms spatial distribution and biomass IBSS Repository
Tokarev, Yu. N.; Vasilenko, V. I.; Zhuk, V. F.; Sokolov, V. G.; Slipetsky, D. Ya..
The method of acoustic express-evaluation of the krill (Euphausia superba Dana) population spatial structure and determination of its accumulations biomass, with 80 kHz echosounding frequencies has been worked out during the 7-th Ukrainian Antarctic expedition. The method error does not exceed 10 %, which permits to recommend it for usage under the Antarctic krill fishery conditions. The principal possibility to acoustically express-evaluate chorological structure of the Antarctic krill population has been shown. Formation by krill of dense accumulations of different form, elongated for 6 miles, appeared to be an expressed feature of krill behaviour during observations. The school type in krill distribution was observed as well. Parallel to this the...
Tipo: Journal Contribution Palavras-chave: Acoustic; Antarctic krill; Abundance; Biomass; Акустика; Антарктический криль; Распределение; Биомасса Acoustic data Abundance Biomass Krill fisheries Biomass http://aims.fao.org/aos/agrovoc/c_926.
Ano: 2005 URL: http://repository.ibss.org.ua/dspace/handle/99011/188
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Active biological materials inhibiting tumor initiation extracted from marine algae OceanDocs
Mostafa, M.H.; Ibrahim, A.M.M.; El-Masry, M.H.; El-Naggar, M.A..
Ethanol extraction of seventeen algal species from 35 different samples collected from the coastal area of Abou-Qir, Egypt, South East of the Mediterranean Sea Coast, was conducted. The aim was to obtain natural products from the algal extracts which have significant biologically active algal compounds. The collected algae showed a wide variation in their occurrence during the period of collection. Thirty five extracts representing different seasonal growths of 17 marine algal species were tested for antitumorigenic activity. Tests performed were the toxicity bioassay using Brine shrimp Artemia salina and the anti-tumor bioassay against Agrobacterium tumefaciens on potato discs. Codium tomentosum (winter); Jaina rubens (summer) and Padina pavonia (winter)...
Tipo: Journal Contribution Palavras-chave: Anti-tumor agent; Bioactive material; Bioassay; Marine algae; Natural product compound Biological properties Algae Marine environment http://aims.fao.org/aos/agrovoc/c_4610.
Ano: 2005 URL: http://hdl.handle.net/1834/1303
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Actividad antagónica entre bacterias epibióticas aisladas de esponjas marinas del Caribe colombiano y su relación con la macroepibiosis OceanDocs
Mora-Cristancho, J.; Zea, S.; Gil-Agudelo, D..
Las superficies sumerigdas en el mar son densamente colonizadas por bacterias y sus interacciones, tales como la inhibición del crecimiento, son importantes para determinar el desarollo de comunidades bactarinas, como también de posteriores etapas de las macroepibiosis. Para determinar el potencial de interacción entre bactarias de las biopelículas de esponjas, se realizaron ensayos de actividad de inhibición in vitro de crecimiento entre cepas bacterianas aisladas de superficies con diferente grado de macroepibiosis, de las esponjas Apysina insularis (limpia), Aplysina lacunosa (con macroepibiosis) y de la superficie calcárea de la concha del molusco bivalvo Donax sp. El procentaje total de interacción antagónica entre estas cepas bacterianas fue del 64...
Tipo: Journal Contribution Palavras-chave: Epibiosis; Sponges; Sponges; Http://aims.fao.org/aos/agrovoc/c_7321.
Ano: 2009 URL: http://hdl.handle.net/1834/3574
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Actividad antileishmanial de seis extractos de organismos marinos OceanDocs
García Parra, M.; Monzote Fidalgo, C.L.; Castañeda Pasarón, C.O.; García Delgado, N.; Pérez Hernández, A..
Introducción: las infecciones causadas por protozoos del género Leishmania constituyen un problema de salud mundial con una alta prevalencia en países subdesarrollados. En la actualidad no existe una vacuna contra esta enfermedad y el tratamiento utilizado es deficiente, por lo que la búsqueda de medicamentos más efectivos y seguros constituye una urgente necesidad. Objetivo: evaluar la actividad antileishmanial in vitro de 6 extractos acuosos e hidroalcohólicos de organismos marinos. Métodos: se determinó la actividad frente a promastigotes y amastigotes de Leishmania amazonensis, así como su toxicidad frente a macrófagos peritoneales de ratones BALB/c. Resultados: en el ensayo de promastigotes los extractos de Bryothamnion triquetrum, Bunodosoma...
Tipo: Journal Contribution Palavras-chave: Marine organisms; Parasites.
Ano: 2012 URL: http://hdl.handle.net/1834/4508
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Actividad antioxidante de algas y plantas marinas de la plataforma insular cubana OceanDocs
Valdés, O.; Hernádez, Y.; Fernández, M.D.; Hernández, I.; Rodriguez, M.; Cano, M.; Laguna, A.; Díaz, C.; Cabrera, B..
En el presente trabajo se estudia la capacidad antioxidante de varios extractos, acuosos e hidro-alcohólicos obtenidos a partir de algas y plantas marinas de la plataforma insular cubana. A todos los extractos se les determinó su contenido de polifenoles, proteínas, lípidos y azúcares totales, así como la actividad Superóxido Dismutasa (SOD). Todos los extractos evaluados mostraron una buena actividad antioxidante, con una CE50 inferior de 0,4 mg.ml-1. El contenido de polifenoles en los extractos de Ulva fasciata es menor el de las otras especies, aunque tanto el extracto hidro-alcohólico como el del alga seca e irradiada de dicha especie presentan una buena actividad antioxidante. El extracto hidro-alcohólico de Thalassia testudinum presenta el mayor...
Tipo: Journal Contribution Palavras-chave: Proteins; Antioxidants; Proteins; Antioxidants; Http://aims.fao.org/aos/agrovoc/c_6259; Http://aims.fao.org/aos/agrovoc/c_511.
Ano: 2008 URL: http://hdl.handle.net/1834/2820
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