Results 41 to 50 of about 2,322 (193)

Low Genetic Diversity and Complex Population Structure in Black Piranha (Serrasalmus rhombeus), a Key Amazonian Predator. [PDF]

Ecol Evol
Using a Genotyping‐by‐Sequencing approach across tributaries in the central Amazonia, we found that the black piranha (Serrasalmus rhombeus) exhibits low genetic diversity, pronounced inbreeding, and significant population structure, likely shaped by historical events rather than contemporary factors.
Thomas A, Sylvain FÉ, Normandeau E, Leroux N, Holland A, Val AL, Derome N.   +6 more
europepmc   +2 more sources

General and specific combining ability in Serrasalmidae

Aquaculture Research, 2018
This work was carried out to predict the combining abilities, both general and specific, for performance traits and bodily yields of Serrasalmidae. Ninety‐six 30‐day‐old juveniles were purchased from two commercial fish farms, 12 of each of the following eight genetic groups: pacu, pirapitinga, tambaqui, tambacu, tambatinga, patinga, paqui and piraqui.
Adriano Carvalho Costa, Hortência Aparecida Botelho, Richardson Cesar da Silva Gomes, Sergio Augusto Sousa Campos, Rafael Vilhena Reis Neto, Marcio Balestre, Fernanda Dotti Prado, Diogo Teruo Hashimoto, Diego Galetti Martins, Fábio Porto‐Foresti, Mário Lima, Rilke Tadeu Fonseca Freitas   +11 more
openaire   +2 more sources

Parámetros productivos del cultivo de cachama blanca Piaractus orinoquensis, en jaulas flotantes

Revista U.D.C.A Actualidad & Divulgación Científica, 2021
La región de la Orinoquia, se caracteriza por poseer espejos de agua que se mantienen durante todo el año, aportando peces para consumo local. La pesca artesanal constituye la principal actividad económica de sustento de comunidades ribereñas, quienes ...
Jorge Andrés Cuan-Barrera, Sandra Liliana Parada-Guevara, Ricardo Murillo-Pacheco, Juan Antonio Ramírez-Merlano   +3 more
doaj   +1 more source

Macroevolutionary consequences of karyotypic changes in the neotropical Serrasalmidae fishes (Ostariophysi, Characiformes) diversification

Genetica, 2023
Abstract In the Neotropical region, one of the most diverse families of freshwater fishes is the monophyletic Serrasalmidae. Karyotypically, the family shows high diversity in chromosome numbers (2n = 54 to 64). However, little is discussed about whether the chromosomal changes are associated with cladogenetic events within this family.
Uedson Pereira, Jacobina, Alany Itala, Pontes, Lucas, Costa, Gustavo, Souza   +3 more
openaire   +2 more sources

Invasão da piranha Serrasalmus marginatus Valenciennes, 1847 no alto rio Paraná, Brasil (Osteichthyes, Serrasalmidae)

Acta Scientiarum: Biological Sciences, 2008
A construção da barragem de Itaipu, 150 km a jusante do salto de Sete Quedas, resultou no afogamento da barreira geográfica natural, com conseqüente mistura das ictiofaunas.
Carlos Sérgio Agostinho, Horácio Ferreira Júlio Junior   +1 more
doaj   +1 more source

OS ARGULÍDDEOS (CRUSTACEA: BRANCHIURA) DA AMAZÔNIA BRASILEIRA 3. ASPECTOS DA ECOLOGIA DE DOLOPS STRIATA BOUVIER, 1899 E DOLOPS CARVALHOI CASTRO, 1949 . [PDF]

Acta Amazonica, 1983
Resumo A especificidade parasitária, áreas de fixação, hospedeiros naturais, índices de infestação e variação sazonal de Dolops striata e Dolops carvalhoi foram estudados durante o período de março de 1979 a março de 1980, na área do Janauacá, um lago de
José Celso de Oliveira Malta, Angela Varella   +1 more
doaj   +1 more source

Nematofauna of red piranha Pygocentrus nattereri (Kner, 1958) (Characiformes: Serrasalmidae) from Amazonia, Brazil [PDF]

Revista Brasileira de Parasitologia Veterinária, 2019
Abstract Between March and October 2008, 355 specimens of Pygocentrus nattereri were collected from the lowland lakes of Central Amazonia, Brazil, to study their nematode fauna. A total of 1.116 specimens of Nematoda were collected, belonging to six species.
Aprígio Mota Morais, Melissa Querido Cárdenas, José Celso de Oliveira Malta   +2 more
openaire   +6 more sources

New hosts and distribution records of Braga patagonica, a parasite cymothoidae of fishes from the Amazon. [PDF]

, 2019
Specimens of Braga patagonica Schiödte & Meinert, 1884 (Isopoda: Cymothoidae) from freshwater fishes deposited in Ichthyological Collection of Amazon National Research Institute (INPA), in central Amazon and from fishes from eastern Amazon (Brazil) were ...
ARAÚJO, C. S. O., BARROS, M. S., TAVARES-DIAS, M, VIANA, G. M.   +3 more
core   +1 more source

Comparación del Desarrollo Embrionario de Piaractus brachypomus (Serrasalmidae) y Pseudoplatystoma sp. (Pimelodidae) [PDF]

International Journal of Morphology, 2010
Pseudoplatystoma sp y Piaractus brachypomus son dos especies de peces dulceacuicolas endemicas de America del Sur de alto interes comercial como peces de cultivo. El objetivo de este trabajo fue comparar el desarrollo embrionario hasta la eclosion en estas dos especies.
Díaz Olarte, John, Marciales-Caro, Lili J, Cristancho Vásquez, Freddy, Cruz-Casallas, Pablo E   +3 more
openaire   +2 more sources

Ecological Factors and Diversification among Neotropical Characiforms [PDF]

, 2012
Morphological and DNA sequence data has been used to propose hypotheses of relationships within the Characiformes with minimal comparative discussion of causes underpinning the major intraordinal diversification patterns.
Duque Escobar, Santiago Roberto, Granado Lorencio, Carlos Antonio, Guisande González, Cástor, Pelayo Villamil, Patricia, Prieto Piraquive, Edgar Francisco, Vera Rodríguez, Manuel   +5 more
core   +1 more source