Results 31 to 40 of about 3,916 (251)

Hypophysectomie et spermatogenèse chez Poecilia reticulata (Poisson Cyprinodontidae)

open access: green, 1969
Hypophysectomie et spermatogenèse chez Poecilia reticulata (Poisson Cyprinodontidae)
Roland Billard
openaire   +4 more sources

Pattern of genetic differentiation of an incipient speciation process: The case of the high Andean killifish Orestias. [PDF]

open access: yesPLoS ONE, 2017
During the Pleistocene and Holocene, the southwest Andean Altiplano (17°-22°S) was affected by repeated fluctuations in water levels, high volcanic activity and major tectonic movements.
Claudia Jimena Guerrero-Jiménez   +6 more
doaj   +1 more source

Prolebias euskadiensis nov. sp., nouvelle espèce de poissons Cyprinodontidae apodes de l’Oligo-Miocène d’Izarra (Province d’Álava, Espagne)

open access: yesSpanish Journal of Palaeontology, 2021
Une nouvelle espèce de poissons cyprinodontidae apodes, Prolebias euskadiensis nov. sp., est décrite dans le gisement fossilifère d’Izarra (Province d’Álava, Espagne) dont l’âge varie, selon les auteurs, du Stampien au Miocène moyen. Elle appartient à un
J. Gaudant
semanticscholar   +1 more source

On the measurement of ecological novelty: scale-eating pupfish are separated by 168 my from other scale-eating fishes. [PDF]

open access: yes, 2013
The colonization of new adaptive zones is widely recognized as one of the hallmarks of adaptive radiation. However, the adoption of novel resources during this process is rarely distinguished from phenotypic change because morphology is a common proxy ...
Martin, Christopher, Wainwright, Peter
core   +7 more sources

Assessment of listing and categorisation of animal diseases within the framework of the Animal Health Law (Regulation (EU) No 2016/429): infectious pancreatic necrosis (IPN)

open access: yesEFSA Journal, Volume 21, Issue 6, June 2023., 2023
Abstract Infectious pancreatic necrosis (IPN) was assessed according to the criteria of the Animal Health Law (AHL), in particular, the criteria of Article 7 on disease profile and impacts, Article 5 on its eligibility to be listed, Annex IV for its categorisation according to disease prevention and control rules as in Article 9, and Article 8 for ...
EFSA Panel on Animal Health and Welfare (AHAW)   +29 more
wiley   +1 more source

Overlooked Invaders? Ecological Impacts of Non‐Game, Native Transplant Fishes in the United States

open access: yesFisheries, Volume 48, Issue 2, Page 62-71, February 2023., 2023
Nonnative fishes can cause ecological impacts as invasive species, but identifying which nonnative species have harmful impacts is critical to prioritizing management and policy responses. Here, we characterized the state of knowledge on the impacts of a possibly overlooked group of invasive species in the United States: non‐game native transplant ...
Jordan H. Hartman, Eric R. Larson
wiley   +1 more source

Small‐bodied fish species from the western United States will be under severe water stress by 2040

open access: yesConservation Science and Practice, Volume 5, Issue 1, January 2023., 2023
Regions with highest anticipated water stress are low in overall freshwater biodiversity but high rates of imperiled species. Abstract Human need to appropriate freshwater in combination with climate change has intensified the rapid decline in freshwater biodiversity.
Sebastian Theis   +3 more
wiley   +1 more source

Length-weight relationships native fish of Southern Altiplano: Lauca National Park, Chile

open access: yesJournal of Freshwater Ecology, 2021
Two genera of fish, Orestias (Cyprinodontidae) and Trichomycterus (Trichomicteridae), inhabit in the Lauca National Park, UNESCO Biosphere Reserve, located at the Andes highlands in northern Chile.
Pablo Rojas, Rodrigo Pardo, Irma Vila
doaj   +1 more source

The North American Freshwater Migratory Fish Database (NAFMFD): Characterizing the migratory life histories of freshwater fishes of Canada, the United States and Mexico

open access: yesJournal of Biogeography, Volume 49, Issue 6, Page 1193-1203, June 2022., 2022
Abstract Aim Migratory freshwater fishes are those that must access discrete habitats to complete their life cycles. Freshwater fish migrations occur around the world and provide numerous ecosystem services for humans and natural systems; however, many migratory species are in decline globally.
Emily M. Dean   +19 more
wiley   +1 more source

Feeding strategies and diet variation in livebearing fishes of the genus Limia (Cyprinodontiformes: Poeciliidae) in the Greater Antilles

open access: yesEcology of Freshwater Fish, Volume 31, Issue 2, Page 389-400, April 2022., 2022
Abstract Feeding specialisations are known to play an important role in the ecology and evolution of many organisms. In this study, we performed a comparative analysis based on the data of the gut content of eight species of the genus Limia (family Poeciliidae) to explore the potential role of feeding ecology in the radiation of this genus in the ...
Rodet Rodriguez‐Silva   +7 more
wiley   +1 more source

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