Results 101 to 110 of about 243 (120)

Host–parasite interaction between branchiurans (Crustacea: Argulidae) and piranhas (Osteichthyes: Serrasalminae) in the Pantanal wetland of Brazil

Environmental Biology of Fishes, 2003
Ecological studies of host–parasite interactions in the tropics are generally restricted to descriptive taxonomic aspects. The present study had as its objective identification of the metazoan ectoparasites of piranhas Pygocentrus nattereri, Serrasalmus spilopleura and S. marginatus in lentic and lotic environments in the Pantanal region, Brazil.
Lucélia Nobre Carvalho, Kleber Del-Claro, Ricardo Massato Takemoto   +2 more
openaire   +1 more source

Karyotype and nucleolar organizer regions of Pygocentrus cariba (SERRASALMINAE) from Caicara del Orinoco, Venezuela

2005
Se estudió el cariotipo de Pygocentrus cariba de Caicara del Orinoco, Venezuela. El número diploide de cromosomas 2n=60 estuvo compuesto de 18 metacéntricos, 30 submetacéntricos, 2 subtelocéntricos y 10 acrocéntricos (NF= 110). Un máximo de 12 cromosomas portadores de NOR fueron detectados, estando las NOR localizadas en la región terminal de los ...
Gaviria,, Juan I, Nirchio, Mauro, Granado, Ángel, Estrada, Alfonso   +3 more
openaire   +2 more sources

Isolation and development microsatellite markers in the Pygocentrus nattereri (Kner, 1858) (Characiformes, Serrasalminae), an important freshwater fish in the Amazon

Conservation Genetics Resources, 2011
The red-bellied piranha belongs to the Pygocentrus genus, and is a representative of the Serrasalmidae family. The P. nattereri is the most abundant species in the floodplain of the Solimoes-Amazonas river system. In the present work, 11 microsatellite loci were developed and used to investigate the genetic variation on 35 wild individuals.
Nascimento, Priscila Roberta M, Santos, C. H.A., Sousa, C. F S, Clímaco, Gisele Torres, Paula-Silva, Maria Nazaré N., Almeida-Val, Vera Maria Fonseca   +5 more
openaire   +2 more sources

Population ecology of Red-bellied Piranha Pygocentrus nattereri Kner, 1858 (Characidae: Serrasalminae) in the Negro River, Pantanal, Brazil

Environmental Biology of Fishes, 2012
This study defined some population parameters for growth of the Red-bellied Piranha (Pygocentrus nattereri) in the Pantanal, based on the bimonthly length-frequency distribution of individuals in samples taken from October 2005 through August 2008 in the Negro River.
Wagner Vicentin, Fábio Edir dos Santos Costa, Yzel Rondon Súarez   +2 more
openaire   +1 more source

Morphological, Histochemical and Morphometric Study of the Myotomal Muscle Tissue of the Pacu (Piaractus mesopotamicus Holmberg 1887: Serrasalminae, Characidae, Teleostei)

Anatomia, Histologia, Embryologia, 2000
SummaryHistochemical, ultrastructural and morphometric methods were used to study growth patterns of red, pink and white muscle fibres and their relation to body weight and total length in the fast‐growing freshwater fish Piaractus mesopotamicus Holmberg.
Dal Pai, V, Dal Pai-Silva, M., Carvalho, E. D., Fujihara, C. Y., Gregorio, E. A., Curi, P. R.   +5 more
openaire   +3 more sources

Karyotype and nucleolar organizer regions in serrasalmus rhombeus (serrasalminae) from caicaradel orinoco,venezuela

2002
Resumen Se estudió el cariotipo de Serrasalmus rhombeus de Caicara del Orinoco, Venezuela. El número diploide de cromosomas 2n=60 estuvo compuesto de 30 metacéntricos, 16 submetacéntricos, 4 subtelocéntricos y 10 acrocéntricos (NF=110). Fueron detectados cuatro pares de cromosomas portadores de NOR.
Nirchio, Mauro, Granado, Alberto, Ron, Ernesto, Pérez, Julio E.   +3 more
openaire   +1 more source

Supplementary description and rehabilitation of Tometes trilobatus Valenciennes, 1850, type-species of Tometes Valenciennes (Characidae: Serrasalminae)

2002
Tometes trilobatus est une espèce différente de Myleus setiger. Tometes est un genre proche de Mylesinus, Ossubtus et du sous-genre Myleus (Myleus) avec lesquels il partage plusieurs caractères uniques chez les Serrasalminae. Les os des mâchoires sont laminaires et les séries de dents du prémaxillaire sont étroitement accolées les unes aux autres.
Jégu, M., dos Santos, G.M., Keith, P., Le Bail, Pierre-Yves   +3 more
openaire   +1 more source

Analise ultraestrutural da oogenese em Serrasalmus spilopleura (Teleostei, Characiformes, Serrasalminae)

2021
openaire   +1 more source

Threatened fishes of the world: Tometes lebaili (Jégu, Keith & Belmont-Jégu 2002) (Characidae: Serrasalminae)

Environmental Biology of Fishes, 2005
Michel Jégu, Philippe Keith
openaire   +1 more source

Chromosome Studies of Serrasalmus spilopleura (Characidae, Serrasalminae) from the Paraná-Paraguay Rivers: Evolutionary and Cytotaxonomic Considerations

Copeia, 1992
Marta M. Cestari, Pedro M. Galetti
openaire   +1 more source