Results 21 to 30 of about 1,744 (163)

Stream-dwelling fish communities from an Atlantic rain forest drainage

Brazilian Archives of Biology and Technology, 2006
Twenty-two species were registered in the Ubatiba system with a predominance of Characiformes and Siluriformes followed by Cyprinodontiformes, Perciformes and Synbranchiformes.
Rosana Mazzoni, Nelsy Fenerich-Verani, Érica Pellegrini Caramaschi, Ricardo Iglesias-Rios   +3 more
doaj   +1 more source

Fish from urban tributaries to the Vermelho River, upper Paraguay River Basin, Mato Grosso, Brazil [PDF]

Check List, 2014
The fish fauna of urban streams is still poorly known, it difficult to assess the effects of urbanization expansion on fish species composition, for this reason the aim of this study was to provide a checklist of species that compose the ichthyofauna of ...
Valdeci Oliveira, Lucia Mateus, Simoni Loverde-Oliveira, William Pietro-Souza   +3 more
doaj   +3 more sources

Ichthyofauna of the Ribeirão Taboão, Paraíba do Sul river basin, Mogi das Cruzes, SP [PDF]

Check List, 2014
We present herein a list of fish species from Ribeirão Taboão, a tributary of Rio Paraíba do Sul basin that is located in the metropolitan region of São Paulo. Fish were caught with trapezoid hand nets, mesh nets and fish traps. We sampled 145 specimens,
Marina Loeb, Ilana Fichberg, George Mattox   +2 more
doaj   +3 more sources

Molecular Data Confirm the Occurrence of the Allochthonous Gambusia holbrooki (Pisces: Poeciliidae) in Sicily and the Maltese Archipelago

Diversity
A major threat to biodiversity is represented by Invasive Alien Species (IAS), particularly on freshwater ecosystems, which are already heavily altered by human activities.
Luca Vecchioni, Mirko Liuzzo, Arnold Sciberras, Jeffrey Sciberras, Justin Formosa, Alan Deidun, Gabriele Giacalone, Vincenzo Arizza, Marco Arculeo, Federico Marrone, Francesco Paolo Faraone   +10 more
doaj   +1 more source

Linking rivers, mixing faunas: How artificial connectivity between the Middle and Upper Paraná River basins shapes fish diversity in a tributary of the Itaipu Reservoir, Brazil

Journal of Fish Biology, EarlyView.
Abstract This work aimed to investigate the distribution and occurrence of fish species along the São Francisco Falso Braço Norte (SFFBN) River basin, a tributary of the Middle Paraná River basin now artificially connected to the Upper Paraná ecoregion, to evaluate how such connectivity may affect the biogeographic distribution and regional composition
Lucas E. P. Kampfert, João C. Maicrovicz, Daniel R. Blanco, Denise Lange, Carla S. Pavanelli, Heleno Brandão   +5 more
wiley   +1 more source

Divergent karyotypes of the annual killifish genus Nothobranchius (Cyprinodontiformes, Nothobranchiidae) [PDF]

Comparative Cytogenetics, 2016
Karyotypes of two species of the African annual killifish genus Nothobranchius Peters, 1868, Nothobranchius brieni Poll, 1938 and Nothobranchius sp. from Kasenga (D.R. Congo) are described. Both species displayed diploid chromosome number 2n = 49/50 for males and females respectively with multiple-sex chromosome system type X1X2Y/X1X1X2X2.
Eugene Krysanov, Tatiana Demidova, Bela Nagy   +2 more
openaire   +3 more sources

Alternative social and reproductive niches linked to intra-sexual color variation in a facultatively protogynous North American annual killifish, Millerichthys robustus

Scientific Reports
Intra-sexual variation in coloration is often linked to comprehensive differences in reproductive behavior and life histories. Both males and females can express intrapopulation variation in coloration, and facultative hermaphrodism adds further ...
Omar Domínguez-Castanedo, Martin Reichard   +1 more
doaj   +1 more source

Experimentally testing the function of anal fins in the bluefin killifish, Lucania goodei

Journal of Fish Biology, EarlyView.
Abstract Anal fins are thought to affect many functions, including swimming, sperm flow and signalling. However, there are few experimental demonstrations of these functions. We manipulated male anal fins by placing a cut in the fin. We found that cut males had lower fertilization rates than uncut males.
Edie Smelko, Rebecca C. Fuller
wiley   +1 more source

Bony fish genomes: Status and gaps

Journal of Fish Biology, EarlyView.
Abstract Bony fish constitute an exceptionally species‐rich group of aquatic vertebrates, comprising more than 95% of all living fish. The adaptive processes on the diversity of environments they inhabit make them a highly diverse group from taxonomic, morphological and evolutionary standpoints.
Noelia Pérez‐Pereira, Carmen Bouza, Paulino Martínez, Diego Robledo   +3 more
wiley   +1 more source

Genomic data support the taxonomic validity of Middle American livebearers Poeciliopsis gracilis and Poeciliopsis pleurospilus (Cyprinodontiformes: Poeciliidae)

PLoS ONE, 2022
Poeciliopsis (Cyprinodontiformes: Poeciliidae) is a genus comprised of 25 species of freshwater fishes. Several well-known taxonomic uncertainties exist within the genus, especially in relation to the taxonomic status of Poeciliopsis pleurospilus and P ...
Sarah J. Ward, Caleb D. McMahan, Basanta Khakurel, April M. Wright, Kyle R. Piller   +4 more
doaj   +2 more sources