Results 61 to 70 of about 634 (155)

A new Hyphessobrycon (Characiformes: Acestrorhamphidae) from the Central Amazon basin, Brazil [PDF]

Papéis Avulsos de Zoologia
A new species of Hyphessobrycon is described from the region of the lower rioTapajós basin, state ofPará, and tributaries of the northern bank of the Amazon River from the rio Itapiranga basin westward to the lower rio Negro basin, states of Amazonas and
Flávio C.T. Lima, Cárlison Silva-Oliveira, Cláudio Oliveira, Tiago C. Faria   +3 more
doaj   +1 more source

Sensing in the dark: Constructive evolution of the lateral line system in blind populations of Astyanax mexicanus

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

Charax hemigrammus

, 2014
Charax hemigrammus (Eigenmann, 1912) Fig. 13 Asiphonichthys hemigrammus Eigenmann, 1912: 403 (original description, type locality: Guyana, Gluck Island). -Henn, 1928: 69 (listed in type catalog).
de Lucena, Carlos Alberto S., Menezes, Naércio A.   +1 more
core   +1 more source

Meta‐analysis contrasting freshwater biodiversity in forests and oil palm plantations with and without riparian buffers

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, Sebastian Kepfer Rojas, Leandro Juen, Luciano Fogaça de Assis Montag, Fernando Geraldo Carvalho, Thiago Pereira Mendes, Kenny Wei Jie Chua, Clare L. Wilkinson, Mohammad Noor Azmai Amal, Muhammad Fahmi‐Ahmad, Dean Jacobsen   +10 more
wiley   +1 more source

Capturas ícticas incidentales de la pesca ornamental en el período de aguas bajas en el área de influencia de Puerto Carreño, Orinoquia colombiana

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, Jhon González-Forero, Saúl Prada-Pedreros   +2 more
doaj  

EVOLUCIÓN DE LA INTEGRIDAD ESTRUCTURAL DE ECOSISTEMAS LÓTICOS DEL PIEDEMONTE LLANERO FRENTE A LA INTERVENCIÓN ANTRÓPICA

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, A. Lopes D., A. Ferreira, T. Martínez B., O. Roque F.   +4 more
doaj   +3 more sources

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, Alonso Reyes‐Calderon, Patrick Venail, Julio M. Araújo‐Flores, Mónica C. Santa‐Maria   +4 more
wiley   +1 more source

Food resource used by small-sized fish in macrophyte patches in ponds of the upper Paraná river floodplain = Uso do alimento por peixes de pequeno porte associados às macrófitas aquáticas em lagoas da planície de inundação do alto rio Paraná

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, Norma Segatti Hahn, Rosemara Fugi   +2 more
doaj  

Hemigrammus tocantinsi: a new species from the upper rio Tocantins basin, Central Brazil (Characiformes: Characidae)

Neotropical Ichthyology
Hemigrammus tocantinsi is described from the upper rio Tocantins basin, Chapada dos Veadeiros, Goiás State, Central Brazil. The new species differs from its congeners by the presence of 15-17 branched anal-fin rays, longitudinal stripe relatively narrow ...
Fernando R Carvalho, Vinicius A Bertaco, Fernando C Jerep   +2 more
doaj   +1 more source