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	Provedor de dados Neotropical Ichthyology (4) Autor Baigún,Claudio R. M. (4) Colautti,Darío C. (2) Dominino,Jael (1) Ferriz,Ricardo A. (1) Grosman,Fabian (1) Maiztegui,Tomás (1) Minotti,Priscilla (1) Nestler,John M. (1) Oldani,Norberto (1) Solimano,Patricio J. (1) Souza,Javier R. Garcia de (1) Mais... Palavra-chave Aquaculture (1) Central Argentina (1) Dam spillway (1) Fish growth (1) Fish plumpness (1) Fishery management (1) Floating cages (1) Growth rate (1) La Estrella marsh (1) Pampean lakes (1) Pilcomayo basin (1) Pool and riffles (1) Pool and weir system (1) Sympatry and allopatry (1) Trophic niche (1) Zooplanktivorous (1) Mais... Tipo do documento Info:eu-repo/semantics/article (4) Ano 2015 (1) 2012 (1) 2010 (1) 2009 (1) País Brazil (4) Idioma Inglês (4)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 4 Primeira ... 1 ... Última Distribution patterns and trophic characteristics of salmonids and native species inhabiting high altitude rivers of Pampa de Achala region, Argentina Neotropical Ichthyology Ferriz,Ricardo A.; Baigún,Claudio R. M.; Dominino,Jael. The Pampa de Achala in central Argentina is an area with low fish species richness where salmonids were first introduced at the beginning of the twentieth century. A total of 19 rivers of different order were sampled during the low water period by using portable electrofishing equipment. We covered different identified macrohabitats (pools, riffles, glides and cascades) in reaches of 300-500 m length. The native species Trichomycterus corduvensis and two exotic salmonids such as Salvelinus fontinalis and Oncorhynchus mykiss represented the most common species, showing allopatric and sympatric distribution in some streams. Stomach contents and diet overlapping were also analyzed. Cluster results showed a first main group comprised those streams with high... Tipo: Info:eu-repo/semantics/article Palavras-chave: Trophic niche; Pool and riffles; Sympatry and allopatry; Central Argentina. Ano: 2010 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252010000400015 Assessment of condition in pejerrey Odontesthes bonariensis (Atheriniformes: Atherinopsidae) populations: which index works best? Neotropical Ichthyology Baigún,Claudio R. M.; Colautti,Darío C.; Grosman,Fabian. The pejerrey Odontesthes bonariensis is the most important target species in temperate freshwater fisheries of Argentina, and assessment of condition has been a regular practice and common diagnostic tool. Most pejerrey fishery studies have used Fulton's (K) index, without testing whether underlying assumptions or requirements were met. We analyzed and contrasted the applicability of K, Kn and Wr indices to assess condition status in several pejerrey populations inhabiting Pampean lakes. Our results showed that whereas Wr and Kn displayed significant condition changes across length at some study lakes, Kn portrayed a small range of variation. We also noted that pejerrey maximum length and size structure strongly varied among populations probably due to the... Tipo: Info:eu-repo/semantics/article Palavras-chave: Fish plumpness; Pampean lakes; Fishery management. Ano: 2009 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252009000300011 New approaches for growth improvement in pejerrey Odontesthes bonariensis (Valenciennes, 1835) culture (Atherinomorpha: Atherinopsidae) Neotropical Ichthyology Solimano,Patricio J.; Souza,Javier R. Garcia de; Maiztegui,Tomás; Baigún,Claudio R. M.; Colautti,Darío C.. The pejerrey is the most important recreational species in shallow temperate lakes and reservoirs of Argentina and the attempts to develop its culture have started a century ago. A common constraint of pejerrey aquaculture is its poor growth under traditional intensive rearing techniques. The aim of this study was to evaluate the possibility to achieve and maintain high growth rates of pejerrey throughout the rearing process by semi-intensive culture method . Four floating cages were installed in La Salada de Monasterio Lake and each one was stocked with 300 juveniles (10.22 ±0.38cm; 6.52 ±0.82g). From January through March all fish were exposed to natural zooplankton as food source, whereas from April to September two cages were supplied daily with... Tipo: Info:eu-repo/semantics/article Palavras-chave: Aquaculture; Fish growth; Floating cages; Growth rate; Zooplanktivorous. Ano: 2015 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252015000100213 Fish passage system in an irrigation dam (Pilcomayo River basin ): when engineering designs do not match ecohydraulic criteria Neotropical Ichthyology Baigún,Claudio R. M.; Nestler,John M.; Minotti,Priscilla; Oldani,Norberto. The Route 28 Dam has the potential to block fish movements from La Estrella marsh to the Pilcomayo River. In addition, the many fish that concentrate immediately downstream of the dam may suffer high mortality when they are stranded during low water periods. The goals of this study are to determine if fish are able to pass the spillway and to assess if the design of the installed ladders (pool and weir type) effectively supports upstream migration of Prochilodus lineatus (sábalo). Results showed that only fish longer than 39 cm should be able to ascend the spillway chute, but when water levels on the spillway crest are over 0.4 m. Fish are also unable to jump from spillway toe to spillway crest because the downstream dissipation pool does not meet the... Tipo: Info:eu-repo/semantics/article Palavras-chave: Dam spillway; La Estrella marsh; Pilcomayo basin; Pool and weir system. Ano: 2012 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252012000400007 Registros recuperados: 4 Primeira ... 1 ... Última

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