Results 1 to 10 of about 67 (57)

Zooplancton en la larvicultura de peces neotropicales [PDF]

open access: yesRevista Mvz Cordoba, 2008
La larvicultura de peces neotropicales altriciales presenta limitaciones para el manejo de la primera alimentación dado el pobre desarrollo del tracto digestivo y capacidad natatoria.
Martha Prieto G., Víctor Atencio G.
doaj   +8 more sources

Ancient genetic divergence in bumblebee catfish of the genus Pseudopimelodus (Pseudopimelodidae: Siluriformes) from northwestern South America [PDF]

open access: yesPeerJ, 2020
Pseudopimelodus is a Neotropical genus of bumblebee catfish, composed of four valid species occurring in both trans- and cis-Andean rivers of South America.
José D. Rangel-Medrano   +2 more
doaj   +3 more sources

Two new species of Pseudopimelodus Bleeker, 1858 (Siluriformes: Pseudopimelodidae) from the Magdalena Basin, Colombia [PDF]

open access: yesPeerJ, 2020
The family Pseudopimelodidae is widely distributed in South America and includes 51 described species organized in seven genera. Only two of four species of the genus Pseudopimelodus have been recorded for the trans-Andean basins of Colombia ...
Ana M. Restrepo-Gómez   +3 more
doaj   +3 more sources

Threshold responses of floating meadow fish communities to floodplain forest cover in the lower Amazon River. [PDF]

open access: yesConserv Biol
Abstract Forest cover is positively associated with fish biomass and fisheries yield in the Amazon River floodplain, and many species enter flooded forests to feed, spawn, or seek refuge from predation. Floating macrophyte beds, known as floating meadows, in Amazon floodplains support high fish diversity and serve as nursery habitat for many fishes of ...
Grinstead S   +6 more
europepmc   +2 more sources

Meristic co-evolution and genomic co-localization of lateral line scales and vertebrae in Central American cichlid fishes. [PDF]

open access: yesEcol Evol
We dissect the co‐evolution and genetic architecture of lateral line scale counts and vertebrae numbers in Neotropical Heroine cichlids. Our phylogenetic comparative analyses recovered a positive correlation between these two traits. Furthermore, our qualitative traits locus (QTL) analyses identified significant genomic co‐localized associations for ...
Ehemann N   +3 more
europepmc   +2 more sources

Nuevo registro geográfico de Rondonia rondoni Travassos, 1919 (Nematoda, Atractidae) en Argentina

open access: yesActa Zoológica Lilloana, 2023
Rondonia rondoni Travassos, 1919 es la única especie del género registrada en peces Neotropicales. En esta nota se registra por primera vez a R. rondoni como parásito de Pterodoras granulosus (Valenciennes, 1821) (Pisces, Doradidae) en la provincia de ...
Geraldine Ramallo, Fabiana Cancino
doaj   +1 more source

First record of Iotabrycon praecox Roberts 1973 (Characidae: Stevardiinae) in the Santa Rosa drainage, southwestern Ecuador [PDF]

open access: yesCheck List, 2014
Iotabrycon praecox (Characidae: Stevardiinae) has been reported as endemic to the Guayas River drainage in Western Ecuador since its description in 1973. We collected one specimen of I.
Windsor Aguirre   +3 more
doaj   +3 more sources

Range expansion of the genus Sicydium (Teleostei: Gobiidae) to coastal mountain streams of southwestern Ecuador and possibly northwestern Peru [PDF]

open access: yesCheck List, 2017
We report collections of several specimens of Sicydium in 2013 and 2014 from the Jubones and Santa Rosa Rivers in southwestern Ecuador. These collections substantially expand the known range of the genus southward.
Windsor Aguirre   +4 more
doaj   +3 more sources

Regulación genética de la determinación sexual y diferenciación gonadal en peces teleósteos

open access: yesEntramado, 2022
Comprender el control de la determinación del sexo y la diferenciación sexual en peces es fundamental para mejorar aspectos de manejo, productividad, economía y conservación de las especies.
Cruz Elena Enriquez-Valencia   +2 more
doaj   +1 more source

​Xantismo en peces cíclidos (Cichliformes: Cichlidae) costarricenses, y variación ontogenética en Parachromis dovii

open access: yesCuadernos de investigación UNED, 2021
Introducción: El xantismo o xantocromismo es una anomalía fenotípica que se evidencia por la producción predominante de xantina, un pigmento que le da al organismo una coloración amarillenta.
Arturo Angulo   +1 more
doaj   +1 more source

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