Results 61 to 70 of about 3,535 (178)
Journal of Fish Biology, EarlyView.Abstract Dietary analysis has contributed to our understanding of animal niches, interspecific interactions, community structure and the flow of matter and energy in food webs. We employed three methods of dietary analysis to estimate trophic niche overlap between two peacock bass species, Cichla cataractae and Cichla ocellaris, across sympatric ...
Benton L. Fry +2 more
wiley +1 more source
Observaciones sobre gónadas de algunas especies de peces del Paraná medio
Acta Zoológica Lilloana, 2022 Este artículo trata sobre las gónadas de algunas especies pertenecientes a siete familias de peces Characiformes y Siluriformes que se encuentran en el medio y bajo río Paraná.
Clarice Pignalberi
doaj
Aquatic Conservation: Marine and Freshwater Ecosystems, Volume 36, Issue 6, June 2026.ABSTRACT The endemic catfish Steindachneridion melanodermatum from the Iguaçu River basin, southern Brazil, is one of the most threatened pimelodid species. Comprehension of its genetic structure is imperative to the formulation of long‐term efficacious conservation strategies. A genetic analysis was conducted on three populations from the lower Iguaçu
Jesús Hernández‐Gómez +8 more
wiley +1 more source
Ciencia Amazónica (Iquitos), 2013 En el presente trabajo se describe sobre la diversidad en tres cuerpos de agua de la cuenca alta del río Itaya, concesión de conservación de la universidad científica del Perú, en una evaluación rápida en los meses de junio y julio del 2012.
Javier del Águila Chávez +3 more
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Beyond Hard Parts: Metabarcoding Advances Dietary Resolution in Threatened Amazonian Elasmobranchs
Aquatic Conservation: Marine and Freshwater Ecosystems, Volume 36, Issue 5, May 2026.ABSTRACT Elasmobranchs are highly vulnerable and are considered one of the most threatened vertebrates worldwide. Insights into diet can improve conservation measures. The bias of traditional morphological methods towards taxa with distinctive hard parts makes metabarcoding analysis a complementary tool to assess diet composition. Here, we analysed the
Alan Érik S. Rodrigues +11 more
wiley +1 more source
Revista Científica, 2010 Los bagres paletón (Sorubim sp.), malarmo (Platysilurus malarmo) y doncella (Ageneiosus sp.) soportan una importante pesquería artesanal en el sur del Lago de Maracaibo, Venezuela, representando alrededor del 30% de las capturas ...
Ramón Eduardo Parra Urdaneta +1 more
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Variação nictemeral na assembleia de peixes de um trecho de rio na Amazônia ocidental brasileira
Biotemas, 2015 Padrões de atividade circadiana estão entre os ritmos biológicos mais evidentes e detectáveis nos animais. Este artigo tem por objetivo verificar os efeitos da variação nictemeral na abundância, biomassa e composição da ictiofauna no médio rio Machado ...
Paulo de Tarso Fonseca Albuquerque +5 more
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Published as part of Cicimurri, David J., Ebersole, Jun A., Stringer, Gary L., Starnes, James E. & Phillips, George E., 2025, Late Oligocene fishes (Chondrichthyes and Osteichthyes) from the Catahoula Formation in Wayne County, Mississippi, USA, pp.
Cicimurri, David J. +4 more
openaire +1 more source
Molecular phylogeny of thorny catfishes (Siluriformes: Doradidae)
Molecular Phylogenetics and Evolution, 2013 Doradidae is a monophyletic catfish family endemic to continental South America, and composed of 93 valid species here placed in 31 genera. Existing phylogenetic hypotheses for Doradidae are derived from comprehensive analyses of morphological data, and a single molecular-based study on a limited subset of taxa.
Arce H., Mariangeles +3 more
openaire +2 more sources
Karyotypes of three species of marine catfishes from Brazil
Brazilian Journal of Oceanography, 1994 The chromosomes of three species of fishes belonging to the family Ariidae -Netuma barba, Genidens genidens and Amis parkeri - were studied after conventional Giemsa staining. All three species have a diploid chromosome number of 2n = 56.
Vicente Gomes +2 more
doaj +1 more source