Results 51 to 60 of about 2,260 (213)

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.
Krysanov, Eugene, Demidova, Tatiana, Nagy, Bela   +2 more
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

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

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

Courtship behaviour in the Knife livebearer Alfaro cultratus (Cyprinodontiformes: Poeciliidae).

Journal of Fish Biology, 2023
The mating behaviour of the Knife livebearer Alfaro cultratus is described in detail. During "Rubbing", the male swims to a position above the female, and gently moves down repeatedly touching the dorsal part of female head with the pelvic fin tips. This
Carlos A. Garita-Alvarado
semanticscholar   +1 more source

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

An integrative taxonomic characterization of extremophile fish Aphanius almiriensis (Teleostei: Cyprinodontiformes) in a hypersaline geothermal system (NW Anatolia)

Journal of Fish Biology, EarlyView.
Abstract The small killifish Aphanius almiriensis (Kottelat, Barbieri & Stoumboudi, 2007) inhabits from brackish springs to estuaries and coastal lagoons in the eastern Mediterranean basin. This study focused on the detailed characterization of Aphanius almiriensis from a hypersaline geothermal spring (Tuzla, Çanakkale, NW Anatolia), where extreme ...
Sevan Ağdamar, Gülşah Saç, Deniz Anıl Odabaşı, Müfit Özuluğ   +3 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

Trophic morphology and diet of the endangered fish Tlaloc hildebrandi (Cyprinodontiformes: Profundulidae).

Revista de Biología Tropical, 2023
Introduction: Tlaloc hildebrandi is a freshwater killifish, endemic to southern Mexico and under threat of extinction; the knowledge of the trophic morphology and diet is needed by conservation managers.
S. Domínguez-Cisneros, A. Kobelkowsky, E. Velázquez-Velázquez   +2 more
semanticscholar   +1 more source

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