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Registros recuperados: 8
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Bioecología de huevos y larvas de peces Cetengraulis mysticetus (Chuhueco), Opisthonema sp. (Pinchagua) y Anchoas en la reserva ecológica manglares Cayapas-Mataje - Ecuador OceanDocs
Luzuriaga de Cruz, M.; Solano Ch., F.; Cevallos, D..
La presente investigación es parte del Convenio de Cooperación Técnica entre el Fondo Ecuatoriano Populorum Pregressio (FEPP) y el Instituto Nacional de Pesca (INP) y tiene como fin principal el estudio de huevos y larvas de chuhueco (Cetengraulis mysticetus), anchoas (Anchoa sp., Anchovia sp. y Engraulis) y pinchagua (Opisthonema sp.) en relación con abundancia y distribución de la microfauna zooplanctónica presente en los esteros durante el período comprendido entre abril del 2000 y diciembre del 2001.
Tipo: Journal Contribution Palavras-chave: Zooplankton; Ichthyoplankton; Eggs; Larvae; Mangroves; Zooplankton; Eggs; Larvae; Mangroves; Http://aims.fao.org/aos/agrovoc/c_15490; Http://aims.fao.org/aos/agrovoc/c_2502; Http://aims.fao.org/aos/agrovoc/c_4204; Http://aims.fao.org/aos/agrovoc/c_16190.
Ano: 2007 URL: http://hdl.handle.net/1834/2404
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Bioenergética del besugo Pagrus pagrus. OceanDocs
Aristizabal, E.O..
The utilization of the energy of food by red porgy (Pagrus pagrus Linnaeus, 1758) from the Argentine Sea (SW Atlantic) was studied. From the energetic point of view, it is proposed that the strategy of patitioning, utilization and storage of the energy of food, is an indicator of the organism response to the environmental conditions. The main objective was to know the proportion of the energy of food derived to the different components of the bioenergetics budget. In order to estimate the monthly energy investment in reproductive growth, chemical analysis of gonads from fishes caught by the fishery fleet and from laboratory studies were performed. Two indexes were used to calculate the energy investment in female ovaries: the proportion of net daily energy...
Tipo: Theses and Dissertations Palavras-chave: Fish culture; Bioenergetics; Eggs; Fish larvae; Food consumption; Energy budget; Metabolism; Oxygen consumption; Fish culture; Eggs; Food consumption; Metabolism; Fish larvae; Oxygen consumption; Http://aims.fao.org/aos/agrovoc/c_2918; Http://aims.fao.org/aos/agrovoc/c_2502; Http://aims.fao.org/aos/agrovoc/c_3016; Http://aims.fao.org/aos/agrovoc/c_4769; Http://aims.fao.org/aos/agrovoc/c_2924; Http://aims.fao.org/aos/agrovoc/c_5478.
Ano: 2003 URL: http://hdl.handle.net/1834/1466
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Broodstock management and induced spawning of flounder Paralichthys orbignyanus (Valenciennes, 1839)under a closed recirculated system OceanDocs
Bambill, G.A.; Oka, M.; Radonic, M.; López, A.V.; Müller, M.I.; Boccanfuso, J.; Bianca, F..
The present study was conducted to determine the parameters regulating spawning performance of P. orbignyanus wild broodstock. The adaptation to captivity was successfully achieved with minimal stress levels. In three consecutive spawning seasons, the annual photothermal manipulation was not effective for the maturation and natural spawning of females although males were running. Females were HCG injected, releasing non fertilized eggs. Artificial fertilization was carried out after stripping the fish with a total production of 18,000 fertilized eggs in 2001 (egg diameter=800±10 µm), 55,300 in 2002 (egg diameter= 850±12 µm)and 1,635,000 fertilized eggs in 2003 (egg diameter 818.4 ±30.08 µm, oil drop 98.1 ±2.96 µm). For the study of the ovulationtime,...
Tipo: Journal Contribution Palavras-chave: Fish culture; Marine fish; Brood stocks; Eggs; Induced breeding; Fish culture; Eggs; Http://aims.fao.org/aos/agrovoc/c_2918; Http://aims.fao.org/aos/agrovoc/c_2502.
Ano: 2006 URL: http://hdl.handle.net/1834/1814
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Clave de identificación de cápsulas de huevos de condrictios del Mar Argentino OceanDocs
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
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Diagnóstico del plancton en el estuario de San Lorenzo en agosto 2006 (Esmeraldas-Ecuador) OceanDocs
Torres, G.; Andrade, C..
Se realizó un monitoreo del plancton en el estuario de San Lorenzo en junio 2006. En los resultados se registró 128 especies del fitoplancton (método cuantitativo) y 50 especies (cualitativo). Las diatomeas más representativas fueron S. costatum, T. nitzschioides, P. longissima, L. danicus, Navicula sp., P. sulcata: T. nitzschioides. Thalassiosira sp. y flagelados (cuantitativo); S. costatum, Coscinodiscus sp., N. sigma y P. Sulcata (cualitativo). La presencia de Gymnodinium sp. P. maximun y M. rubrum podría asociarse con la formación de mareas rojas al interior del estuario. En los resultados del zooplancton registrarón 16 taxas constituidos mayoritariamente por Zoeas de Brachiura y Copépodos, distribudidos en toda el área de estudio principalmente en...
Tipo: Journal Contribution Palavras-chave: Plankton; Diatoms; Phytoplankton; Zooplankton; Biomass; Fish larvae; Eggs; Abundance; Estuaries; Species diversity; Zooplankton; Biomass; Eggs; Estuaries; Plankton; Phytoplankton; Fish larvae; Species diversity; Diatoms; Http://aims.fao.org/aos/agrovoc/c_15490; Http://aims.fao.org/aos/agrovoc/c_926; Http://aims.fao.org/aos/agrovoc/c_2502; Http://aims.fao.org/aos/agrovoc/c_2673; Http://aims.fao.org/aos/agrovoc/c_5950; Http://aims.fao.org/aos/agrovoc/c_13344; Http://aims.fao.org/aos/agrovoc/c_2924; Http://aims.fao.org/aos/agrovoc/c_33954; Http://aims.fao.org/aos/agrovoc/c_32657.
Ano: 2007 URL: http://hdl.handle.net/1834/2378
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Estrategia reproductiva de la saraca, Brazilian menhaden, Brevoortia aurea (Pisces: Clupeidae), en el estuario del Río de la Plata OceanDocs
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
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Evaluación del stock desovante de anchoveta en la I y II Regiones, año 2003 OceanDocs
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
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Preliminary study on hatching of rotifers (Brachionus plicatilis) and copepods (Cyclopoida): response to flooding and organic fertilisation OceanDocs
Mwandya, A.W.; Kyewalyanga, M.S.; Valdenberg, A..
The effect of water flooding, organic fertiliser application and salinity manipulation in stimulating the hatching of rotifer resting eggs was investigated during the dry season (in August/September 1999) in simulation tanks and earthen ponds at Makoba, Zanzibar. The majority of hatched zooplankton included rotifers, identified as Brachionus plicatilis, and other zooplankton such as copepods and protozoa were present in small numbers. The number of rotifers hatched in simulation treatments with low salinity was higher than the values in treatments containing undiluted seawater. Up to 22 ± 1.5 (mean ± SE) rotifers/ml were counted in treatments with low salinity, whereas only a maximum of 13 ± 1. rotifers/ml were found in high-salinity treatments. On the...
Tipo: Journal Contribution Palavras-chave: Eggs; Resting spores; Salinity; Flooding; Hatching; Eggs; Salinity; Fertilization; Http://aims.fao.org/aos/agrovoc/c_2502; Http://aims.fao.org/aos/agrovoc/c_6751; Http://aims.fao.org/aos/agrovoc/c_2863.
Ano: 2004 URL: http://hdl.handle.net/1834/1093
Registros recuperados: 8
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