Results 31 to 40 of about 4,539 (221)

First record of Hysterothylacium sp. Moravec, Kohn et Fernandes, 1993 larvae (Nematoda: Anisakidae) infecting the ornamental fish Hyphessobrycon eques Steindachner, 1882 (Characiformes, Characidae)

Brazilian Journal of Biology
This study reports for the first time infection with Hysterothylacium sp. larvae in the ornamental fish Hyphessobrycon eques from the Paranapanema River, Jurumirim Reservoir, São Paulo State, Brazil. A sample of 33 specimens of H.
AA Acosta, RJ Silva
doaj   +1 more source

Species delimitation of neotropical Characins (Stevardiinae): Implications for taxonomy of complex groups.

PLoS ONE, 2019
Accurate species delimitation is crucial for studies of phylogeny, phylogeography, ecology, conservation and biogeography. The limits of species and genera in the Characidae family are controversial due to its uncertain phylogenetic relationships, high ...
Jorge E García-Melo, Claudio Oliveira, Guilherme José Da Costa Silva, Luz E Ochoa-Orrego, Luiz Henrique Garcia Pereira, Javier A Maldonado-Ocampo   +5 more
doaj   +1 more source

Metazoan parasites of the lambari Astyanax altiparanae collected in the Batalha River, State of São Paulo, Brazil

Brazilian Journal of Biology, 2017
Here we conduct a qualitative and quantitative analysis of ectoparasites and endoparasites of Astyanax altiparanae (Garutti & Britski, 2000), popularly known as lambari-do-rabo-amarelo collected from the Batalha River, State of São Paulo, Brazil.
D. C. Negrelli, V. D. Abdallah, R. K. Azevedo   +2 more
doaj   +1 more source

B chromosomes in Astyanax scabripinnis (Pisces, Characidae) [PDF]

Heredity, 1992
A karyotypic analysis was carried out using conventional staining and C-banding in 32 specimens of Astyanax scabripinnis (Pisces, Characidae) from Campos do Jordao (Sao Paulo State, Brazil). Twenty-eight individuals (87.5 per cent of the sample studied) showed 1–2 extra B-chromosomes, similar in size and shape (metacentrics) to pair 1 of the karyotype,
Lara Bellintani Salvador, Orlando Moreira-Filho   +1 more
openaire   +1 more source

INFLUENCIAS DE UN RELLENO SANITARIO SOBRE LA COMPOSICIÓN, ABUNDANCIA Y DISPERSIÓN DIURNA DE LOS PECES EN LA QUEBRADA EL VENADO, CORREGIMIENTO DE CÓRDOBA, MUNICIPIO DE BUENAVENTURA (VALLE DEL CAUCA, COLOMBIA)

Revista de la Academia Colombiana de Ciencias Exactas, Físicas y Naturales, 2023
En 2009, se estudió la composición, abundancia y dispersión diurna de los peces presentes en la quebrada El Venado, ubicada en el corregimiento de Córdoba, municipio de Buenaventura, Valle del Cauca, Colombia. La quebrada es uno de los afluentes del río
Carlos E. Fernández M., Maicol Ramírez, Efraín A. Rubio R.   +2 more
doaj   +1 more source

Desenvolvimento larval de Brycon hilarii (Characiformes, Characidae) [PDF]

Iheringia. Série Zoologia, 2012
O presente estudo caracterizou o desenvolvimento inicial de Brycon hilarii (Valenciennes, 1850) através de caracteres morfométricos e merísticos e analisou as relações entre as características morfométricas das larvas ao longo do desenvolvimento usando modelos de regressão linear, quadrática e linear por partes.
Oliveira, Fernando G. de, Bialetzki, Andréa, Gomes, Luiz C., Santin, Miriam, Taguti, Tátia L.   +4 more
openaire   +4 more sources

Taxonomic revision of Galeocharax (Characiformes: Characidae: Characinae) [PDF]

Neotropical Ichthyology, 2017
ABSTRACT The taxonomy of Galeocharax, a genus of freshwater fishes distributed in most South American cis-Andean river systems, except the rio Negro, rio São Francisco and rio Xingu basins and the eastern drainages of Brazil, is herein revised. A total of 1229 specimens were examined from which 680 had meristic and morphometric data taken. Osteological
Giovannetti, Victor, Toledo-Piza, Mônica, Menezes, Naércio A.   +2 more
openaire   +4 more sources

Caracterização do sêmen de tambaqui (Colossoma macropomum) durante período reprodutivo

Revista de Ciências Agroveterinárias, 2018
Objetivou-se com o presente trabalho caracterizar qualitativamente e quantitativamente o sêmen de tambaqui durante o período reprodutivo. Foram realizadas três coletas, com intervalos regulares de aproximadamente 30 dias no período reprodutivo de 2012 ...
Dayane Regina Lenz, André de Moura Victorio, Mayanny Carla Carvalho Lima, Tayrone Freitas Prado, Fernanda Gomes de Paula, Maria Lucia Gambarini Meirinhos, Emmanuel Arnhold   +6 more
doaj   +1 more source

Seasonality of nematode larvae in Iguanodectes spilurus (Characidae) an ornamental fish from northeastern Para, Brazil [PDF]

Acta Amazonica, 2013
The current study presents a parasitological survey of larval nematodes from freshwater ornamental fish Iguanodectes spilurus caught in the watercourse of the Caete River, in the northeast region of the State of Para, Brazil.
Rodrigo Yudi Fujimoto, Ellem Cristina Silva dos Anjos, Fabrício Menezes Ramos, Maurício Laterça Martins   +3 more
doaj   +1 more source

New insights into the putative XX/XY sex chromosomal system in blue‐eyed red‐fin pleco Hypostomus soniae (Siluriformes, Loricariidae)

Journal of Fish Biology, EarlyView.
Abstract Blue‐eyed red‐fin pleco Hypostomus soniae (family Loricariidae) presented a putative sex system XX/XY in early stage. Aiming to explore the inter‐populational karyotypic variation and proposed emergence of the XX/XY system, we studied 13 H. soniae individuals (6 males, 7 females) from the Tapajós River.
Luan Aércio Melo Maciel, Renata Coelho Rodrigues Noronha, Bruno Rafael Ribeiro de Almeida, Manoella Gemaque Cavalcante, Cleusa Yoshiko Nagamachi, Julio Cesar Pieczarka, Luís Reginaldo R. Rodrigues   +6 more
wiley   +1 more source