Results 41 to 50 of about 1,269 (171)

Closing of the Tethys Sea and the phylogeny of Eurasian killifishes (Cyprinodontiformes: Cyprinodontidae) [PDF]

Journal of Evolutionary Biology, 2003
Abstract To test vicariant speciation hypotheses derived from geological evidence of the closing of the Tethys Sea, we reconstruct phylogenetic relationships of the predominantly fresh-water killifish genus Aphanius using 3263 aligned base pairs of mitochondrial DNA from samples representing 49 populations of 13 species.
Hrbek, Tomas, Meyer, Axel
openaire   +3 more sources

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

Fish Assemblages in an Urbanized Neotropical Basin: Influence of Environmental Factors Across Dry and Rainy Periods

International Review of Hydrobiology, Volume 111, Issue 2, December 2026.
ABSTRACT This study investigated the effects of season and environmental disturbances on fish communities in neotropical rivers of the Sorocaba basin, a Sub‐Basin of the Paraná River in Southeast Brazil, based on sampling 1196 individuals from 49 species, including two non‐native and one threatened with extinction.
Natalia S. Alves, Daiane E. Cavallari, Welber S. Smith   +2 more
wiley   +1 more source

Distribution and current conservation status of the Mexican Goodeidae (Actinopterygii, Cyprinodontiformes) [PDF]

ZooKeys, 2019
The current distribution and abundance of the 40 species of Goodeidae fishes known from Mexico are described, and a total of 84 Evolutionarily Significant Units (ESUs) is designated within these species. Two species and four ESUs are likely extinct with no captive populations, and three species and eight ESUs are probably extinct in the wild but have ...
John Lyons, Kyle R. Piller, Juan Miguel Artigas-Azas, Omar Dominguez-Dominguez, Pablo Gesundheit, Michael Köck, Martina Medina-Nava, Norman Mercado-Silva, Arely Ramírez García, Kearstin M. Findley   +9 more
openaire   +4 more sources

Tres nuevas especies de killis (Cyprinodontiformes: Nothobranchiidae) de Guinea Ecuatorial

Graellsia, 2022
Se describen para la parte continental de Guinea Ecuatorial dos nuevas especies de Mesoaphyosemion y una nueva especie del grupo de especies ‘Aphyosemion’ herzogi. También, se presentan los resultados de los análisis de DNAmt de casi todos los fenotipos
Francisco J. Malumbres, Rainer Sonnenberg, Jouke R. Van der Zee   +2 more
doaj   +1 more source

Comparative Morphology and Homology of the Hyoid Apparatus and Associated Muscles in Beloniform Fishes (Teleostei: Atherinomorpha)

Journal of Morphology, Volume 287, Issue 8, August 2026.
Homology of the branchiostegals rays in atherinomorph fishes demonstrated by the position of the rays relative to the interhyoideus muscle. In beloniform outgroups, above, the two groups of branchiostegal rays are separated by the interhyoideus. In beloniform fishes, below, only one group of branchiostegal rays is present.
Daniel N. Lumbantobing, Lynne R. Parenti
wiley   +1 more source

Cyprinodontiformes

Published as part of Hernández-Ávila, Sonia Gabriela, Hoagstrom, Christopher W. & Matamoros, Wilfredo A., 2024, Historical biogeography of North American killifishes (Cyprinodontiformes) recapitulates geographical history in the Gulf of México watershed in Zoological Journal of the Linnean Society 202 (2), DOI: 10.1093/zoolinnean/zlae105, http://zenodo.
Hernández-Ávila, Sonia Gabriela, Hoagstrom, Christopher W., Matamoros, Wilfredo A.   +2 more
openaire   +2 more sources

The first new species of European Ascocotyle Looss, 1899 (Digenea: Heterophyidae) described in more than half a century

International Journal for Parasitology: Parasites and Wildlife, 2022
Ascocotyle (Phagicola) trentinii n. sp. is described based on adults from experimentally infected ducklings (Anas platyrhynchos domesticus) fed with metacercariae from the visceral serosa of the Mediterranean banded killifish, Aphanius fasciatus ...
Andrea Gustinelli, Monica Caffara, Dino Scaravelli, Maria Letizia Fioravanti, Tomáš Scholz   +4 more
doaj   +1 more source

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

Journal of Fish Biology, Volume 108, Issue 6, Page 2159-2163, June 2026.
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

Análise morfométrica das células de cloro de Poecilia vivípara expostas a frações da folha e da casca do caule de Caryocar brasiliensis - DOI: 10.4025/actascibiolsci.v25i1.2107

Acta Scientiarum: Biological Sciences, 2008
Frações da folha e casca de pequi (Caryocar brasiliensis), testadas como moluscicidas, combateram o hospedeiro intermedário da esquistossomose. O nicho ecológico desse molusco está associado a mananciais de água.
Luciana Damacena Silva, Valdirene do Nascimento, Suzana Costa Santos, José Oscar Rodrigues de Morais, Simone Maria Teixeira de Saboia Morais   +4 more
doaj   +1 more source