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Registros recuperados: 10
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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. OceanDocs
Bava, J.; Jaureguizar, A.; Meijide, F..
Tipo: Theses and Dissertations Palavras-chave: Feeding behaviour; Reproduction; Brackishwater fish; Trophic relationships; Feeding behaviour; Reproduction.
Ano: 1996 URL: http://hdl.handle.net/1834/4005
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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. OceanDocs
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
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Biología reproductiva comparada de especies de la familia Sciaenidae en aguas del Río de la Plata y Costa Bonaerense OceanDocs
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
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Ecología trófica de estadios juveniles de los esciénidos dominantes en el estuario de Bahía Blanca. Pescadilla de red (Cynoscion guatucupa) y corvina rubia (Micropogonias furnieri) OceanDocs
Sardiña, P..
Striped weakfish (Cynoscion guatucupa)and whitemouth croaker(Micropogonias furnieri)are one of the most important coastal resources of Bahia Blanca Estuary (Buenos Aires Prov., Argentina). The aims of this thesis were: 1, to analyze the population and morphological characteristics of the juveniles stages of the striped weakfish and the whitemouth croaker living in Bahia Blanca Estuary; 2, to describe the dietary habits of the juveniles of these two species; 3, to analyze the ontogenetic and seasonal diet changes in both species, and 4, to study the feeding interrelationships between both species as well as the interrelationships between each species and its prey. In view of the mentioned objectives, diet was evaluated taking into account the following...
Tipo: Theses and Dissertations Palavras-chave: Brackishwater environment; Brackishwater fish; Comparative studies; Feeding behaviour; Trophic relationships; Zooplankton; Juveniles; Feeding behaviour; Zooplankton; Brackishwater environment; Juveniles; Http://aims.fao.org/aos/agrovoc/c_10778; Http://aims.fao.org/aos/agrovoc/c_15490; Http://aims.fao.org/aos/agrovoc/c_1050; Http://aims.fao.org/aos/agrovoc/c_25393.
Ano: 2004 URL: http://hdl.handle.net/1834/2595
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Essai d’acclimatation du tilapia du nil "Oreochromis niloticus" dans la retenue du barrage Lebna (Cap bon, Tunisie) OceanDocs
Derouiche, E.; Azaza, M.S.; Kraiem, M.M..
Ce travail consiste à tester l’acclimatation d’une espèce thermophile, le tilapia du Nil Oreochromis niloticus dans la retenue du barrage Lebna (Cap Bon), moyennant un système extensif de grossissement. Les résultats montrent que le tilapia introduit directement en pleine retenue a pu se maintenir et supporter les mauvaises conditions hivernales en adoptant une stratégie d’hibernation. Par ailleurs, avec le retour des conditions favorables (T>20°C), ce Cichlidé a montré une bonne condition, une meilleure croissance qu’en élevage dans les bassins et cette fraction de population a pu proliférer.
Tipo: Journal Contribution Palavras-chave: Acclimatization; Brackishwater fish; Environmental conditions; Fish culture; Growth; Hibernation; Population dynamics; Rearing; Water reservoirs; Testing; Tilapia.
Ano: 2009 URL: http://hdl.handle.net/1834/4494
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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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Interacciones biofísicas del ictioplancton frente a la Laguna Mar Chiquita OceanDocs
Ballesteros, G.; Ansay, C..
Tipo: Theses and Dissertations Palavras-chave: Ichthyoplankton; Brackishwater environment; Brackishwater fish; Estuarine dynamics; Coastal lagoons.
Ano: 2002 URL: http://hdl.handle.net/1834/4300
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La salinidad y la distribución espacial de la ictiofauna en el estuario del Río de la Plata OceanDocs
Rico, M.R..
Los ecosistemas estuariales se caracterizan por su alta productividad, baja diversidad biológica y fluctuaciones impredecibles de salinidad. A su vez, la distribución espacial de su ictiofauna resulta en general suficientemente explicada por los patrones de distribución de la salinidad. En particular, en el estuario del Río de la Plata (35° 00' S y 55° 30' W) que presenta una marcada estratificación vertical de densidad, dominada por la salinidad, se analizó cuantitativamente la relación entre dicha variable y la distribución espacial de su ictiofauna demersal. Se procesó y analizó información proveniente de siete campañas de evaluación pesquera realizadas por el Proyecto "Especies Demersales Costeras" del INIDEP en el área de estudio, durante las...
Tipo: Theses and Dissertations Palavras-chave: Brackishwater fish; Salinity charts; Salinity effects; Salinity tolerance; Community composition; Species diversity; Brackishwater environment; Estuaries; Estuaries; Species diversity; Brackishwater environment; Http://aims.fao.org/aos/agrovoc/c_2673; Http://aims.fao.org/aos/agrovoc/c_33954; Http://aims.fao.org/aos/agrovoc/c_1050.
Ano: 2000 URL: http://hdl.handle.net/1834/2603
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Patrones de utilización de la laguna Mar Chiquita (Buenos Aires, Argentina) y área costera adyacente por parte de los primeros estadios ontogénicos de peces OceanDocs
Bruno, Daniel O..
The role of the Mar Chiquita lagoon and its adjacent coastal area as nursery ground for fish larvae and juveniles and the factors which regulate their recruitment process, was evaluated. To do so, we analyzed the fish early life stages composition and spatio-temporal variation over the marine-estuarine gradient of the lagoon and its relationship with environmental factors; the diel variation of these stages in the immediate area at the mouth of the lagoon; and the source of the organic carbon which feed them on the mouth of the lagoon and adjacent coastal area, by using stable isotope analysis. The richness and mean density of larvae were higher at the offshore area than at the lagoon. Inside the lagoon the dominant species in larval stage was Brevoortia...
Tipo: Theses and Dissertations Palavras-chave: Brackishwater fish; Fish larvae; Juveniles; Recruitment; Life cycle; Environmental factors; Abundance; Brackishwater environment; Coastal lagoons; Brevoortia aurea; Gobiosoma parri; Platanichthys platana; Ramnogaster arcuata; Odontesthes argentinensis; Engraulidae; Brackishwater environment.
Ano: 2014 URL: http://hdl.handle.net/1834/5819
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Tramas tróficas en sistemas frontales del Mar Argentino: estructura, dinámica y complejidad analizada mediante isótopos estables OceanDocs
Gaitán, E.N..
Two of the most important frontal systems of the Argentine Sea (SW Atlantic Ocean) were compared to obtain evidences on the regulatory mechanisms of food web length, incorporating both spatial (areas within fronts) and temporal (presence or absence of frontal structure) variability. The stable isotopes of Carbon and Nitrogen were used to evaluate the origin and composition of the organic matter used by primary consumers, the structure of food webs, the trophic levels of several taxa and the benthic-pelagic coupling within each system. In the Río de la Plata estuarine front, different sources of organic matter would support the food webs occurring in the three areas of the system. The particulate organic material (POM) would be the main resource supporting...
Tipo: Theses and Dissertations Palavras-chave: Food webs; Trophic relationships; Trophic levels; Saline fronts; Estuarine front; Carbon isotopes; Nitrogen isotopes; Plankton; Benthos; Brackishwater fish; Marine fish; Brackishwater environment; Marine environment.
Ano: 2012 URL: http://hdl.handle.net/1834/4523
Registros recuperados: 10
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