Results 161 to 170 of about 1,598 (193)

The Karyotypic Diversification of Calophysines and the Exallodontus-Propimelodus Clade (Pimelodidae, Siluriformes): A Cytotaxonomic and Evolutionary Approach in Pimelodidae Based on Ancestral State Reconstruction

Zebrafish, 2019
Pimelodidae family is one of the most diverse and widely distributed fish groups in South America. Phylogenetic analysis in the family have recently indicated the existence of two main clades: "sorubiminae" and the OCP clade, including Pimelodus ornatus,
Mariana Costa Terra, Fabio Hiroshi Takagui, Joana Neres Da Cruz Baldissera   +2 more
exaly   +5 more sources

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Chilling of Steindachneridion parahybae (siluriformes: pimelodidae) embryos

Theriogenology, 2015
The objective of this study was to assess the viability of Steindachneridion parahybae embryos after chilling using different cryoprotectant solutions, stages of embryonic development, chilling curves, and storage periods at temperatures between -10 °C and 0 °C.
Lopes, Taís da Silva, Sanches, Eduardo Antônio, Okawara, Renan Yoshiharu, Romagosa, Elizabeth   +3 more
openaire   +3 more sources

Biologia do jundiá Rhamdia quelen (Teleostei, Pimelodidae) [PDF]

Ciencia Rural, 2000
O jundiá, Rhamdia quelen, é encontrado desde o centro da Argentina até o sul do México, e seu cultivo está aumentando no sul do Brasil. Portanto, o objetivo desta revisão é apresentar os dados existentes até o momento sobre a biologia dessa espécie. R. quelen pode atingir 50cm de comprimento e 3kg de peso, possui hábito noturno e habita locais calmos e
Jaqueline Ineu Golombieski, Levy Carvalho Gomes, Bernardo Baldisserotto   +2 more
exaly   +4 more sources

Structural analysis of embryogenesis ofLeiarius marmoratus(Siluriformes: Pimelodidae)

Zygote, 2014
SummaryEmbryological studies in fish species are useful to the understanding of their biology and systematics. The available biological data inLeiarius marmoratusare scarce and additional information about its reproductive biology is needed, mainly because this species has been commercially exploited and used in production of hybrid lineages.
Oliveira-Almeida, Isângela Rodrigues, Buzollo, Hellen, Costa, Raphael da Silva, Veríssimo-Silveira, Rosicleire, Porto-Foresti, Fábio, Ninhaus-Silveira, Alexandre   +5 more
openaire   +3 more sources

Ovarian follicle growth in the catfish Iheringichthys labrosus (Siluriformes: Pimelodidae)

Tissue and Cell, 2006
The morphofunctional organisation of the female reproductive system, the oocyte growth and the follicular envelope ultrastructure were studied by the first time in the catfish Iheringichthys labrosus from Upper Paraná River basin, Southeastern Brazil, in order to contribute to the knowledge of the reproductive behaviour strategies of this species.
J E, Santos, G E V, Padilha, O, Bomcompagni-Júnior, G B, Santos, E, Rizzo, N, Bazzoli   +5 more
openaire   +2 more sources

Supernumerary chromosomes in a Rhamdia hilarii population (Pisces, Pimelodidae)

Genetica, 1990
A study was conducted on the chromosomes of a Rhamdia hilarii (Pisces, Pimelodidae) population. The results suggest that the basic chromosome number is 2n=58, with numerical variation up to a limit of 2n=63, due to the presence of supernumerary chromosomes which seem to be mitotically stable.
A. S. Fenocchio, L. A. C. Bertollo
openaire   +1 more source

Larval development of mandi‐pintado Pimelodus britskii (Siluriformes: Pimelodidae)

Journal of Fish Biology, 2019
This study investigated the morphology, morphometric and meristic characters of 117 larval Pimelodus britskii showing early development of head, eye, barbel and snout. Body and mouth pigmentation increased throughout development; the mouth was ventrally situated in the yolk‐sac stage, becoming subterminal afterwards, and an embryonic fin was visible in
Mara C. Almeida, Hugo J. Message, Paulo V. Sanches, Dirceu Baumgartner, Robie A. Bombardelli, Gilmar Baumgartner, Langeani Francisco   +6 more
openaire   +3 more sources

Isolation and characterization of microsatellite loci in Pimelodus maculatus (Siluriformes: Pimelodidae)

Molecular Ecology Resources, 2008
AbstractTo evaluate genetic variability in Pimelodus maculatus, a small migratory catfish common in South America, we isolated and characterized several microsatellite markers from individuals collected from a population in the River Grande (Brazil). A total of 11 loci were obtained and analyzed.
Ana Luiza B, Paiva, Evanguedes, Kalapothakis   +1 more
openaire   +2 more sources

Early development of Brachyplatystoma juruense (Boulenger, 1898) (Siluriformes: Pimelodidae)

Zootaxa
The early development stages of Brachyplatystoma juruense (Boulenger) are described through morphological, meristic, and morphometric data, providing useful traits to identify its larvae and juveniles. Additionally, the growth pattern throughout the species’ development has been determined from the smallest specimen of 3.93 mm (flexion) to the largest ...
Silva, Fabíola Katrine Souza Da, Cajado, Ruineris Almada, Oliveira, Lucas Silva De, Santos, Darliane Campos Dos, Avila, Leandro Cortes, Zacardi, Diego Maia   +5 more
openaire   +2 more sources

Analyses of Nucleolus Organizer Regions and Heterochromatin of Pimelodus Maculatus (Pisces, Pimelodidae)

Genetica, 2000
Eighteen specimens of Pimelodus maculatus collected from Tibagi River (Sertaneja, PR, Brazil) were analyzed cytogenetically. The diploid number of 56 chromosomes was observed and karyotype was 20 M + 20 SM + 10 ST + 6 A with fundamental number (FN) of 106.
A C, Swarça, L, Giuliano-Caetano, A L, Dias   +2 more
openaire   +2 more sources