Results 71 to 80 of about 609 (192)
Journal of Fish Biology, Volume 104, Issue 6, Page 1947-1959, June 2024.Abstract A new species of characid with remarkable sexual characteristics is described from the upper Guayabero River drainage from the Orinoco basin in Colombia. The new species is included in the genus Monotocheirodon by sharing most of the previously proposed diagnostic features of this genus.
Tiago P. Carvalho +3 more
wiley +1 more source
Ecology and Evolution, Volume 14, Issue 4, April 2024.Previous studies predominantly investigated eye regression in cavefish evolution, but less is known about constructive evolution of non‐visual sensory systems in subterranean species. This review highlights our state of knowledge on mechanosensory lateral line expansions in Astyanax mexicanus, emphasizing anatomical features, synaptic plasticity, and ...
Roberto Rodríguez‐Morales
wiley +1 more source
Acta Biológica Colombiana, 2015 Entre los años 1993 y 2007 se determinó la evolución de la integridad ecológica de dos corrientes del piedemonte llanero del Meta, los caños Mateguadua y Caibe en proximidades a los municipios de Restrepo y Cumaral.
Guillermo Aramando Briceño Vanegas
doaj +1 more source
Length–weight relations of fishes (Actinopterygii) from karst streams in the Bodoquena Plateau, western Brazil [PDF]
Acta Ichthyologica et Piscatoria, 2018 The presently reported study provides the length–weight relations (LWR) for 23 species from headwater streams of the Bodoquena Plateau, which is located on the southern border of the Brazilian Pantanal.
F. Severo-Neto +4 more
doaj +3 more sources
Conservation Biology, Volume 38, Issue 1, February 2024.Abstract The expansion of oil palm plantations has led to land‐use change and deforestation in the tropics, which has affected biodiversity. Although the impacts of the crop on terrestrial biodiversity have been extensively reviewed, its effects on freshwater biodiversity remain relatively unexplored.
Oscar Alberto Rojas‐Castillo +10 more
wiley +1 more source
Universitas Scientiarum, 2009 Incidental bycatch by ornamental fishing during the low-water season in the influence zone of Puerto Carreño, ColombianOrinoco Basin. Objective. The present study assesses the incidental fish catches in the fishing of ornamental species in terms ...
Juan Mondragón-Estupiñan +2 more
doaj
Assessing fish diversity in abandoned mining ponds in Madre de Dios, Peru, using environmental DNA
Environmental DNA, Volume 6, Issue 1, January–February 2024.We surveyed four lentic systems in Madre de Dios, Peru: two abandoned mining ponds created by ASGM and two unmined oxbow lakes as a reference to assess fish recolonization. We compared two alternative eDNA processing methods and contrasted our results with historic data from traditional biodiversity monitoring. Our results indicate that eDNA could be a
Camila Timana‐Mendoza +4 more
wiley +1 more source
Acta Scientiarum: Biological Sciences, 2009 This study analyzed the diet of seven small-sized fish species(Characidae) and assessed their use of food resources. The species were collected in 2001 from nine ponds with aquatic macrophytes in the Paraná river floodplain, Brazil. Astyanax altiparanae,
Valdirene Esgarbosa Loureiro Crippa +2 more
doaj
, 2010 Autapomorphy of Hemigrammus bleheri: 1. Form of teeth of inner premaxillary tooth row (128): (0> 1) with cusps aligned in straight series and without anterior concavity. Paralleled in the Rhoadsiinae, in nodes 195, 245, and 280, and in Odontostoechus lethostigmus.
openaire +2 more sources
, 2007 FIGURE 3. Hemigrammus taphorni, dorsal-fin length as function of standard length by sex and maturity. Open squares = adult males; full circles = females/immature specimens.Published as part of Benine, Ricardo C. & Lopes, Guilherme A.
Benine, Ricardo C. +3 more
core +1 more source