Results 81 to 90 of about 18,439 (295)
An analysis of Nigerian freshwater fishes: those under threat and conservation options [PDF]
, 2005 The study assessed qualitatively the threat status of all nigerian freshwater fishes using such criteria as rarity, size at maturity, mode of reproduction, human population density, habitat degradation, pollution and range of each species among others ...
Bankole, N.O., Olaosebikan, B.D.
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The elusive scleral cartilages: Comparative anatomy and development in teleosts and avians
The Anatomical Record, Volume 308, Issue 7, Page 1838-1850, July 2025.Abstract The sclera of all vertebrate eyes is comprised of connective tissue, with some organisms developing cartilage within this tissue. A review of the cartilages that have been described in the vertebrate sclera and their anatomical relationships is discussed together with their potential homology.
Tamara A. Franz‐Odendaal
wiley +1 more source
Fish, Ribeirão do Feijão Basin, São Carlos, São Paulo, Brazil [PDF]
Check List, 2008 The Ribeirão do Feijão Basin is the main water supplier for the municipality of São Carlos, in the state of São Paulo, Brazil. Field work was carried out from February to November 2005, using sieves, casting nets, and drag nets.
Oscar Shibatta, Ângela Silva-Souza
doaj +5 more sources
Fish, Taquara river basin, northern of the state of Paraná, Brazil. [PDF]
Check List, 2007 Taquara River is situated in an agriculturist region, on the northern portion of the Tibagi river basin, state ofParaná. Fish fauna was collected in five stretches of the Taquara River and in nine headwaters of its tributaries, in theperiod of May to ...
Galves, W. +2 more
doaj +4 more sources
DiversityCharaciformes, a highly diverse group, are of great economic and ecological significance; however, their complex morphological convergence and adaptive radiation pose challenges to taxonomy, and phylogenetic controversies remain.
Hongjian Chen +3 more
doaj +1 more source
Environmental DNA, Volume 7, Issue 4, July–August 2025.Using eDNA metabarcoding, we assessed fish diversity in isolated sinkholes in southern Brazil, uncovering signs of local extinction and species persistence. This approach offers a non‐invasive tool for biodiversity assessment and informs conservation efforts in unique karst environments.
Luz E. De la Ossa‐Guerra +5 more
wiley +1 more source
Desenvolvimento larval de Brycon hilarii (Characiformes, Characidae) [PDF]
Iheringia. Série Zoologia, 2012 O presente estudo caracterizou o desenvolvimento inicial de Brycon hilarii (Valenciennes, 1850) através de caracteres morfométricos e merísticos e analisou as relações entre as características morfométricas das larvas ao longo do desenvolvimento usando modelos de regressão linear, quadrática e linear por partes.
Oliveira, Fernando G. de +4 more
openaire +4 more sources
Dos especies nuevas de Creptotrema (Digenea: Allocreadiidae) de America del Sur
Revista Mexicana de Biodiversidad, 2008 DOS ESPECIES NUEVAS DE DIGÉNEOS PERTENECIENTES A CREPTOTREMA TRAVASSOS, ARTIGAS Y PEREIRA, 1928 FUERON DESCRITAS DE EJEMPLARES DEPOSITADOS EN LA COLECCIÓN DE INVERTEBRADOS DEL MUSEO DE HISTORIA NATURAL DE GINEBRA, SUIZA. CREPTOTREMA LAMOTHEI N. SP.
STEPHEN S. CURRAN
doaj +1 more source
Low‐Effort eDNA Sampling Reveals Fish Community Patterns in a Neotropical River Basin
Environmental DNA, Volume 7, Issue 4, July–August 2025.Low eDNA sampling effort (< 10 sample sites) using a portable on‐site kit with syringe filters and a modest water volume (< 500 mL per site) provided a rapid and robust snapshot of fish biodiversity. Environmental DNA based species richness increases along the upstream‐downstream gradient showing a significant negative correlation with river elevation ...
Daniel Cardoso Carvalho +4 more
wiley +1 more source
On some species of Astyanax reported erroneously from Argentina [PDF]
, 2015 Several species of Astyanax have been reported from Argentina which currently are considered not to be distributed so far South or whose identity as Astyanax is doubtful.
Koerber, Stefan, Mirande, Juan Marcos
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