Results 71 to 80 of about 6,260 (178)

Comentários sobre a distribuição geográfica de Astyanax altiparanae Garutti & Britski, 2000 (Osteichthyes, Characidae) na bacia do rio Iguaçu

Acta Scientiarum: Biological Sciences, 2008
Garutti (1995) fez a revisão de algumas espécies de Astyanax (Osteichthyes, Characidae) e aquela, conhecida como “tambiú” na bacia do alto rio Paraná, anteriormente identificada como Astyanax bimaculatus, foi considerada nova e posteriormente descrita ...
Weferson Júnio da Graça, Carla Simone Pavanelli   +1 more
doaj   +1 more source

Hybridization, Maternal Inheritance, and Evolutionary Time of Divergence of Endangered Species of Hypancistrus (Siluriformes: Loricariidae) in the Xingu River

Ecology and Evolution, Volume 16, Issue 5, May 2026.
We uncover recent hybridization dynamics among three endemic Hypancistrus species from the Xingu River, including the critically endangered H. zebra. Mitogenomic analyses reveal unidirectional maternal inheritance and recent evolutionary radiation (< 0.5 Ma), explaining their retained reproductive compatibility.
Franciele F. Kerniske, Bruno F. Melo, Leandro M. Sousa, Tiago M. Degrandi, Roberto F. Artoni   +4 more
wiley   +1 more source

Astyanax chico

, 2006
Astyanax chico: CI-FML 3837, 13 ex., 52.5-80.4 mm, Argentina, Salta, Orán, La Bambú, Río Bermejo basin, Arroyo El Oculto.Published as part of J. M. Mirande, G. Aguilera & M. D. L. M.
M. D. L. M. Azpelicueta, G. Aguilera, J. M. Mirande   +2 more
core   +1 more source

A new species of Astyanax (Ostariophysi: Characiformes: Characidae) from the upper rio Iguaçu basin, southern Brazil

Neotropical Ichthyology
Astyanax eremus, a new species of geographically isolated characid fish, is described from a small tributary of the upper rio Iguaçu basin. The new species belongs to the Astyanax scabripinnisspecies complex and is easily distinguished from its congeners
Leonardo F. S. Ingenito, Luiz F. Duboc
doaj   +1 more source

Ossification of the cranium of Inpaichthys kerri (Characiformes: Acestrorhamphidae) with discussion of paedomorphic traits in the genus

Journal of Anatomy, Volume 248, Issue 5, Page 806-829, May 2026.
In this study, we present a detailed description of the cranial development of Inpaichthys kerri (Characiformes: Acestrorhamphidae), highlighting important topics such as pedomorphic characters and their relationship with ontogeny and phylogeny, as well as ossification sequences unique to the species. Abstract The study of development provides valuable
Yasmim De Santana Santos, Manoela M. F. Marinho   +1 more
wiley   +1 more source

Astyanax vermilion and Astyanax burgerai: new characid fishes (Ostariophysi: Characiformes) from Northeastern Bahia, Brazil

Neotropical Ichthyology
Two new Astyanax species, A. vermilion, from rio Almada and rio Cachoeira, and A. burgerai, from rio Almada, Bahia State, Brazil, are described. Astyanax vermilion is distinguished from most of its congeners and from all other Astyanax species known from
Angela M. Zanata, Priscila Camelier
doaj   +1 more source

Urocleidoides astyanacis n. sp. (Mongenva ancyrocephalinae) from frescwater characidians on the genus Astyanax Urocleidoides astyanacis n. sp. (Mongenea Ancyrocephalinae) de caracídeos de água doce do gênero Astyanax

Memorias do Instituto Oswaldo Cruz, 1988
A new species of Urocleidoides, U. astyanacis (Monogenea, Ancyrocephalinae) is described from the "lambari" Astyanax scabripinnis (Jenyns, 1842) and A. fasciatus (Cuvier, 1819).
Ismael Gioia, Nelson da Silva Cordeiro, Paulo de Toledo Artigas   +2 more
doaj   +1 more source

Astyanax ita

, 2006
Astyanax ita: MLP 9599, holotype, 64.0 mm, Argentina, Misiones, Río Iguazú basin, arroyo Tateto.Published as part of J. M. Mirande, G. Aguilera & M. D. L. M. Azpelicueta, 2006, Astyanax endy (Characiformes: Characidae), a new fish species from the upper
M. D. L. M. Azpelicueta, G. Aguilera, J. M. Mirande   +2 more
core   +1 more source

Two new species of Astyanax (Ostariophysi: Characiformes: Characidae) from eastern Brazil, with a synopsis of the Astyanax scabripinnis species complex

Neotropical Ichthyology
Two new species of Astyanax are described from eastern Brazil: A . microschemos from the córrego Palmital, rio Itapemirim drainage, Espírito Santo, and A . pelecus from the rio Pardo drainage, Bahia.
Vinicius A. Bertaco, Carlos A. S. de Lucena   +1 more
doaj   +1 more source

Astyanax tupi

, 2007
Astyanax tupi: MACN-Ict 8646, holotype, 70.1 mm, Argentina, Misiones, Arroyo Cunapiru Chico.Published as part of Juan Marcos Mirande, Gastón Aguilera & María de las Mercedes Azpelicueta, 2007, A new species of Astyanax (Characiformes: Characidae) from ...
María de las Mercedes Azpelicueta, Gastón Aguilera, Juan Marcos Mirande   +2 more
core   +1 more source