Results 41 to 50 of about 255 (151)

Geophagus brasiliensis (Teleostei: Cichlidae) as an indicator of toxicity of ornamental stone processing wastes

Comparative Biochemistry and Physiology Part C: Toxicology & Pharmacology, 2019
Massive exploitation of geological resources may lead to environmental issues due to the inadequate disposal of the processing wastes, which are potentially hazard to terrestrial and aquatic environments. To evaluate the toxic effects ornamental stones processing wastes (OSPW), Geophagus brasiliensis fish were contaminated with different concentrations
Graciele Petarli, Venturoti, Johara, Boldrini-França, Aline Silva, Gomes, Bárbara, Chisté, Levy Carvalho, Gomes   +4 more
openaire   +2 more sources

HYDROCHEMICAL PARAMETERS AND BIOMETRIC DATA OF FISH SPECIES FROM THE BORORÉ, BILLINGS RESERVOIR, SÃO PAULO, BRAZIL

Boletim do Instituto de Pesca, 2021
The artisanal fishing is an important activity in Billings Reservoir (São Paulo, Brazil) and there is a paucity of biometric data about the fish in this region.
Fabiana Harumi MIYASAKI, Sarah ARRUDA, Letícia Carneiro FERREIRA, Juliana de Souza AZEVEDO   +3 more
doaj   +3 more sources

Novas considerações morfológicas e sistemáticas sobre os Procamallanus brasileiros (Nematoda, Camallanoidea) On Brazilian Procamallanus (Nematoda, Camallanoidea)

Memorias do Instituto Oswaldo Cruz, 1976
Mais uma vez os autores apresentam os resultados obtidos, após examinarem 62 amostras de Procamallanus brasileiros parasitas de peixes dulcícolas. Duas novas espécies são propostas: Procamallanus (Spirocamallanus) pexatus e Procamallanus (Procamallanus ...
R. Magalhães Pinto, Sueli P. de Fábio, Dely Noronha, F. J. Tayt-son Rolas   +3 more
doaj   +1 more source

Illuminating the Dark: Using eDNA Metabarcoding to Study the Unique Ichthyofauna of the Furnas Formation Sinkholes

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, Daniel M. Limeira, Roger H. Dalcin, Heron O. Hilário, Daniel C. Carvalho, Roberto F. Artoni   +5 more
wiley   +1 more source

Larger Fish Upstream: Testing the Drivers of Fish Longitudinal Size Distribution in a Stream

Freshwater Biology, Volume 70, Issue 7, July 2025.
ABSTRACT The “larger fish upstream pattern” (LFUP), where fish size increases from river mouths toward headwaters, is widely documented, but the drivers remain unclear. Here, we tested whether LFUP is related to species reproductive strategies or environmental factors (differential growth, predation, competition). Using historical data (1994–1998) from
Pedro Wolf, Piatã Marques, Rosana Mazzoni   +2 more
wiley   +1 more source

Long‐Term Effects of Land Use and Cover Change and Dam Rupture on Ichthyofauna in a Neotropical Stream

International Review of Hydrobiology, Volume 110, Issue 1, Page 5-12, June 2025.
ABSTRACT This study evaluates land use and land cover (LULC) changes and their impacts on the fish community of a neotropical stream in the Sorocaba River basin, Brazil, from 2006 to 2023. The watershed experienced landscape changes over time, categorized into four periods: rural interventions, urban interventions, restorative interventions, and post ...
Nícholas de P. Nicomedes, Thiago M. R. Santos, Luís G. N. de Carvalho, Beatriz C. G. Prieto, Camila S. Bento, Larissa L. M. Silva, Flavia C. de Paiva, Natalia S. Alves, Welber S. Smith   +8 more
wiley   +1 more source

Length‒Weight and Length‒Length Relationships of Freshwater Fish Species Caught by Professional Fishermen in the Itaipu Reservoir, Brazil

Journal of Applied Ichthyology, Volume 2025, Issue 1, 2025.
Length‒weight relationships (LWRs) and length‒length relationships (LLRs) were estimated for 63 and 58 freshwater fish species, respectively, captured in the Itaipu Reservoir, Paraná River Basin, Paraná State, Brazil. Sampling was carried out from March 1987 to July 2024 at 63 professional fishing sites within the reservoir’s area of influence ...
Éder André Gubiani, Luiz Guilherme dos Santos Ribas, Anderson Luís Maciel, Geuza Cantanhêde, Laís Thayse Meier, Pitágoras Augusto Piana, Caroline Henn, Yintao Jia   +7 more
wiley   +1 more source

Fishy Business—Assessing the Efficacy of Active and Passive eDNA to Describe the Fish Assemblage of a River in Southwestern Western Australia to Support Effective Monitoring

Environmental DNA, Volume 6, Issue 6, November–December 2024.
This study compared three fish sampling methods: traditional fyke netting, and active and passive environmental DNA sampling along a 30 km stretch of the Canning River in Western Australia. The effectiveness of the three different methods of detecting fish was tested with a hierarchical multispecies abundance model fit, with the model used to estimate ...
Emma R. Stevens, Josephine Hyde, Leah S. Beesley, Daniel C. Gwinn, Suzanne Thompson, Lenore Morris, Paige R. Wilson, Deirdre B. Gleeson   +7 more
wiley   +1 more source

PLASTICITY OF JAW AND SKULL MORPHOLOGY IN THE NEOTROPICAL CICHLIDS GEOPHAGUS BRASILIENSIS AND G. STEINDACHNERI [PDF]

Evolution, 1991
I examined plasticity of jaw and skull morphology induced by feeding different diets in two species of the neotropical cichlid genus Geophagus. The two species possess different modes of development, which affect the size at which young begin feeding. I hypothesized that the difference in size at first feeding could lead to a difference in the amount ...
openaire   +2 more sources

Ocean warming and novel species interactions boost growth and persistence of range‐extending tropical fishes but challenge that of sympatric temperate species in temperate waters

Journal of Biogeography, Volume 51, Issue 11, Page 2243-2258, November 2024.
Abstract Aim Climate change can have a broad range of impacts on the physiology and behaviour of animals. These effects can be mediated by the presence of other species in the community, but current forecasts of species responses to climate change largely ignore biological interactions.
Minami Sasaki, Cristián J. Monaco, David J. Booth, Ivan Nagelkerken   +3 more
wiley   +1 more source