Results 11 to 20 of about 184 (113)

Biología reproductiva de Hypophthalmus edentatus (Pimelodidae) y Brycon amazonicus (Bryconidae) en la cuenca del Putumayo, región Loreto, Perú

Revista Peruana de Investigación Agropecuaria
La pesca es una de las principales actividades económicas en el río Putumayo, a pesar de la poca información biológica generada de las especies explotadas.
Luis Olabo Sotelo-Lescano, Luis Exequiel Campos-Baca, Javier del-Águila-Chávez, Sybill Prisyla Casado-del-Castillo   +3 more
doaj   +4 more sources

Efeito da estratégia de vida sobre as variações no conteúdo de energia de duas espécies de peixes (Brycon hilarii e Hypophthalmus edentatus), durante o ciclo reprodutivo = Effect of life strategy on the variations of energy content of two fish species (Brycon hilarii e Hypophthalmus edentatus) during their reproductive cycle

Acta Scientiarum: Biological Sciences, 2007
Com o objetivo de investigar diferenças no conteúdo de energia durante o ciclo reprodutivo, foram selecionados 54 exemplares de Brycon hilarii (k-estrategista) e 82 de Hypophthalmus edentatus (r-estrategista) em amostragens realizadas mensalmente ...
Vanessa Monteiro, Evanilde Benedito, Wladimir Marques Domingues   +2 more
doaj   +2 more sources

Effect of alcohol and formaldehyde on the ä13C and ä15N isotopic composition of Plagioscion squamosissimus and Hypophthalmus edentatus (Pisces, Osteichthyes) = Efeito do alcool e formol sobre a composicao isotopica de ƒÂ13C e de ƒÂ15N em Plagioscion squamosissimus e Hypophthalmus edentatus (Pisces, Osteichthyes)

Acta Scientiarum: Biological Sciences, 2011
The present study investigates the ƒÂ13C and ƒÂ15N isotopic composition in frozen samples (control), samples in alcohol and in formaldehyde of Plagioscion squamosissimus and Hypophthalmus edentatus.
Gislaine Iachstel Manetta, Evanilde Benedito, Carlos Ducatti   +2 more
doaj   +2 more sources

Holotype-based validation, redescription and continental-scale range extension of the South American catfish species Hypophthalmus oremaculatus Nani and Fuster, 1947, with additional information on Hypophthalmus edentatus Spix and Agassiz, 1829 (Siluriformes, Pimelodidae) [PDF]

Proceedings of the Academy of Natural Sciences of Philadelphia, 2015
Fil: Littmann, Michael W.. No especifica;
Littmann, Michael W., Azpelicueta, Maria de Las M., Vanegas Rios, James Anyelo, Lundberg, John G.   +3 more
openaire   +3 more sources

Effects of light-dark cycle on the spatial distribution and feeding activity of fish larvae of two co-occurring species (Pisces: Hypophthalmidae and Sciaenidae) in a Neotropical floodplain lake

Brazilian Journal of Biology, 2018
Most studies on mechanisms regulating fish larvae processes have focused on assessing the isolated effects of food distribution and feeding behavior. However, in natural ecosystems, fish larvae may strongly interact with zooplankton organisms in an array
P. H. S. Picapedra, P. V. Sanches, F. A. Lansac-Tôha   +2 more
doaj   +3 more sources

Distribuição, abundância e uso de diferentes ambientes pela ictiofauna dominante na área de influência do reservatório de Itaipu

Acta Scientiarum: Biological Sciences, 2008
Com o objetivo de caracterizar a estrutura da ictiofauna dominante do reservatório de Itaipu e de sua área de influência, foram coletados 85.160 exemplares durante o período de novembro de 1983 a outubro de 1989 em 11 estações de amostragem distribuídas ...
Evanilde Benedito-Cecilio, Angelo Antonio Agostinho   +1 more
doaj   +3 more sources

Fish fauna from Río Pilcomayo National Park and Ramsar Site and its surroundings, Formosa, Argentina [PDF]

Check List, 2014
The first list of fish species from the Río Pilcomayo National Park and Ramsar Site (RPNP), located in the Wet Chaco plains of northern Argentina is presented here.
Florencia Brancolini, Priscilla Minotti, Lucila Protogino, Hugo López, Claudio Baigún   +4 more
doaj   +3 more sources

IMPACTOS DA HIDRELÉTRICA SAMUEL SOBRE AS COMUNIDADES DE PEIXES DO RIO JAMARI (RONDÔNIA, BRASIL) [PDF]

Acta Amazonica, 1995
A Usina Hidrelétrica de Samuel está localizada no rio Jamari, primeiro afluente da margem direita do rio Madeira, cerca de 56 km abaixo de Porto Velho-RO. A hidrelétrica teve sua construção iniciada em abril/1982 e entrou em operação a partir de abril/89.
Geraldo Mendes dos SANTOS
doaj   +1 more source

Ontogenetic changes in the food items assimilated byPlagioscion squamosissimus(Perciformes: Sciaenidae) andHypophthalmus edentatus(Siluriformes: Pimelodidae) [PDF]

Journal of Freshwater Ecology, 2011
In order to identify the ontogenetic changes in the food items assimilated by the larvae of Plagioscion squamosissimus and Hypophthalmus edentatus, we analyzed the stomach content and the nitrogen isotopic value (δ 15N) from the larvae. Samplings were performed monthly, from October 2002 to March 2003, and October 2003 to March 2004 in the subbasin of ...
Gislaine Iachstel Manetta, Andréa Bialetzki, Cristiano dos Santos Neto, Luiz Antonio Martinelli, Evanilde Benedito   +4 more
openaire   +1 more source

Biología reproductiva de Hypophthalmus edentatus “maparate” (Agassiz, 1829) y Brycon amazonicus (Spix & Agassiz, 1829) "sábalo cola roja" en la cuenca media del río Putumayo, Loreto - Perú [PDF]

, 2022
An investigation was carried out from November 2020 to October 2021, to know the reproductive biology of Hypophthalmus edentatus (Agassiz, 1829) "maparate" and Brycon amazonicus (Spix & Agassiz, 1829) "sábalo cola roja", in the middle basin of the ...
Sotelo Lescano, Luis Olabo
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