Results 41 to 50 of about 19,555 (242)
Acute toxicity of synyhetic resin effluent to African Catfish, Clarias gariepinus [BURCHELL, 1822]. [PDF]
, 2012 Aquatic pollution as a field has gained a lot of attention over the decades majorly because of the vital role the aquatic environment plays in the human lifecycle.
Dahunsi, S. O., Oranusi, S. U.
core +1 more source
Molecular and fossil evidence place the origin of cichlid fishes long after Gondwanan rifting. [PDF]
, 2013 Cichlid fishes are a key model system in the study of adaptive radiation, speciation and evolutionary developmental biology. More than 1600 cichlid species inhabit freshwater and marginal marine environments across several southern landmasses.
Alex Dornburg +9 more
core +1 more source
Increase in environmental temperature affects exploratory behaviour, anxiety and social preference in Danio rerio [PDF]
, 2020 The aim of this work is to investigate the effect of a temperature increase on the behaviour of adult zebrafish (Danio rerio) maintained for 21 days at 34 °C (treatment) and 26 °C (control). The temperatures chosen are within the vital range of zebrafish
Alleva, E +6 more
core +2 more sources
A new and improved electric fish finder with resources for printed circuit board fabrication [PDF]
Neotropical Ichthyology, 2019 We describe the circuit design, construction, and operation of a field-portable electric fish finder (an AC-coupled wide-band differential bio-amplifier with loudspeaker output).
Michael A. Haag +3 more
doaj +1 more source
The cost of gold: Mercury contamination of fishes in a Neotropical river food web
Neotropical Ichthyology, 2021 In South America, mercury contamination due to gold mining operations is a threat to both biodiversity and human health. We examined mercury (Hg) concentrations in fishes that constitute important subsistence fisheries from mined and non-mined ...
Carmen G. Montaña +3 more
doaj +1 more source
Elements of fish metacommunity structure in Neotropical freshwater streams [PDF]
Ecology and Evolution, 2020 AbstractThe identification of the mechanisms underlying patterns of species co‐occurrence is a way to identify which process(es) (niche, neutral, or both) structure metacommunities. The current paper had the goal of identifying patterns of co‐occurrence in Neotropical stream fish and determining which processes structure the fish metacommunity, and ...
Thiago Bernardi Vieira +6 more
openaire +3 more sources
PHYLOGENETIC RELATIONSHIPS AMONG WEST INDIAN XENODONTINE SNAKES (SERPENTES; COLUBRIDAE) WITH COMMENTS ON THE PHYLOGENY OF SOME MAINLAND XENODONTINES [PDF]
, 1999 The evolutionary relationships of the West Indian (W. I.) xenodontine snake assemblage has been considered as either monophyletic or paraphyletic. Allozyme data from protein electrophoresis were used to estimate the phylogeny of the W. I.
Crother, Brian I.
core +2 more sources
The Anatomical Record, EarlyView.Abstract This study investigated the physiological and morphological adaptations of the liver of the carnivorous fish Pygocentrus nattereri (piranha) in response to seasonal variations (dry and rainy seasons) in the Brazilian Pantanal. The objective was to describe how the liver, a central organ in metabolic regulation, responds to environmental ...
Maria Eduarda Corona Garcia +9 more
wiley +1 more source
Neotropical IchthyologyAcestridium triplax, new species, is described from the Amazon River basin in Pará State, Brazil. The new species can be distinguished from all its congeners by having one series of middle abdominal plates between the lateral abdominal plates (vs no ...
Mónica S. Rodriguez, Roberto E. Reis
doaj +1 more source