Results 71 to 80 of about 1,864 (206)

Influence of the dietary contribution of terrestrial insects to the condition factor of bleak Alburnus alburnus in a highly polluted lowland river

Journal of Fish Biology, Volume 105, Issue 5, Page 1445-1454, November 2024.
Abstract Bleak Alburnus alburnus is a highly abundant but understudied fish species, and we know little about the trophic ecology of populations inhabiting rivers in central Europe. From an ecosystem perspective, this fish species is interesting as it is known to feed on surface insects, thereby linking the terrestrial with the aquatic habitat.
Kristin Scharnweber, Stefania Milano, Daniel Hühn   +2 more
wiley   +1 more source

New characid fish, Hyphessobrycon scutulatus, from the rio Teles Pires drainage, upper rio Tapajós system (Ostariophysi: Characiformes: Characidae)

Neotropical Ichthyology
A new species of characid fish, Hyphessobrycon scutulatus, is described from the rio Teles Pires drainage, upper rio Tapajós system. The new species is distinct from all Hyphessobrycon species by the following characters: inner row premaxillary teeth 7 ...
Carlos Alberto Santos de Lucena
doaj   +1 more source

Meristic co‐evolution and genomic co‐localization of lateral line scales and vertebrae in Central American cichlid fishes

Ecology and Evolution, Volume 14, Issue 9, September 2024.
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 ...
Nicolas Ehemann, Paolo Franchini, Axel Meyer, C. Darrin Hulsey   +3 more
wiley   +1 more source

Two new Bryconamericus: B. cinarucoense n. sp. and B. singularis n. sp. (Characiformes, Characidae) from the Cinaruco River, Orinoco Basin, with keys to all Venezuelan species [PDF]

, 2008
Here we describe for the first time Bryconamericus cinarucoense n. sp. and Bryconamericus singularis n. sp., two new species of Characiformesfrom the Cinaruco River, Orinoco Basin in Venezuela. B. cinarucoense n. sp.
Román-Valencia, C., Ruiz-C., R. I., Taphorn B., D. C.   +2 more
core  

Quantitative impacts of hydroelectric dams on the trans‐Amazonian migrations of goliath catfish

Conservation Letters, Volume 17, Issue 5, September/October 2024.
Abstract Hydropower expansion is increasingly responsible for connectivity and biodiversity loss in freshwater ecosystems. The Amazon basin, which supports the highest level of freshwater biodiversity globally, faces such unplanned expansion. Here, we demonstrate and quantify the impacts of two major hydroelectric dams on the Madeira River on the trans‐
Marília Hauser, Carolina R. C. Doria, Christophe Pécheyran, Emmanuel Ponzevera, Jacques Panfili, Gislene Torrente‐Vilara, Jean‐François Renno, Carlos Edward Freitas, Carmen García‐Dávila, Fabrice Duponchelle   +9 more
wiley   +1 more source

A new species of Astyanax (Ostariophysi: Characiformes: Characidae) from the upper rio Iguaçu basin, southern Brazil

Neotropical Ichthyology
Astyanax eremus, a new species of geographically isolated characid fish, is described from a small tributary of the upper rio Iguaçu basin. The new species belongs to the Astyanax scabripinnisspecies complex and is easily distinguished from its congeners
Leonardo F. S. Ingenito, Luiz F. Duboc
doaj   +1 more source

New Late Tertiary Fish Fossils from the Sinda Region, Eastern Zaire [PDF]

, 1992
An assemblage of about 200 fish remains, recently collected from late Miocene early Pliocene deposits of the Sinda area, is described. Although the collection is small, several taxa not previously reported from these localities are included.
VAN NEER, Wim
core   +1 more source

Myers' divisions revisited: Contemporary evidence for distinct trait differences among global inland fishes

Fish and Fisheries, Volume 25, Issue 4, Page 672-685, July 2024.
‘Our global assessment showed multiple differences in salinity tolerance, morphological and life‐history traits, distributional ranges and genetic diversity among the three Myers' fish divisions (i.e. primary, secondary and peripheral fish), but also large variability and overlap among groups in some features’.
Carlos Cano‐Barbacil, Julian D. Olden, Emili García‐Berthou   +2 more
wiley   +1 more source

A checklist of chromosome numbers and karyotypes of Amazonian freshwater fishes [PDF]

, 1992
Une liste des nombres de chromosomes de 211 espèces de poisson du bassin amazonien est présentée. Ces espèces, appartenant à 5 ordres, sont caractérisées par une grande variabilité du nombre de chromosomes (2n = 22 à 2n = 134), par la présence de ...
Falcao, J., Feldberg, E., Nakayama, C.M., Porto, J.I.R.   +3 more
core  

Effect of dietary zinc on the growth and metabolic enzyme activities of golden mahseer (Tor putitora) fry [PDF]

, 2016
The golden mahseer (Tor putitora) is an important and high valued sport and food fish of national and international importance. Therefore for promotion of golden mahseer, proper mineral supplementation in early developmental stages is very important. The
Akhtar, M. S., Bhagawati, Kaustubh, Borah, Simanku, Chadha, N. K., Sarma, Debajit, Sawant, Paramita B.   +5 more
core   +2 more sources