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Aspectos morfológicos da cloaca e do falo dos gêneros Crocodylus, Paleosuchus, Caiman e Melanosuchus (Crocodylia) com implicações evolutivas
(Universidade Federal de Minas GeraisBrasilICB - INSTITUTO DE CIÊNCIAS BIOLOGICASPrograma de Pós-Graduação em ZoologiaUFMG, 2019-03-20)
This study presents characteristics of the cloaca and the copulatory organ of the
genera Crocodylus, Paleosuchus, Caiman and Melanosuchus. The amniotes cloaca
exhibits a large morphological variation and is generally ...
Transplante interespecífico de células germinativas-tronco em Siluriformes Neotropicais
(Universidade Estadual Paulista (Unesp), 2018-02-27)
No Brasil os siluriformes neotropicais são o segundo grupo mais ameaçado de extinção com 91 espécies. Neste trabalho, foi empregada a técnica de quimerismo usando duas espécies de siluriformes neotropicais o mandi (Pimelodus ...
Two new species and a review of the inseminating freshwater fish genus Monotocheirodon (Characiformes: Characidae) from Peru and Bolivia
(2013-07-26)
Two new species of inseminating freshwater fishes of the genus Monotocheirodon, family Characidae, are described from Peru. Males and females of both new species have an external, visually obvious urogenital papilla that ...
Características fenotípicas según maduración gonadal de la “mota” Calophysus macropterus (LICHTENSTEIN, 1819), cultivada en estanques en el centro de investigaciones “Miguel Castañeda Ruíz” IIAP San Martín
(Universidad Nacional de la Amazonía PeruanaPE, 2019)
El objetivo de este estudio fue conocer las características fenotípicas según
maduración gonadal de reproductores de Calophysus macropterus “mota”,
cultivada en estanques en el centro de investigaciones “Miguel ...
Two new species and a review of the inseminating freshwater fish genus Monotocheirodon (Characiformes: Characidae) from Peru and Bolivia
(Museu de Zoologia da Universidade de São PauloSão Paulo, 2013)
Two new species of inseminating freshwater fishes of the genus Monotocheirodon, family Characidae, are described from Peru. Males and females of both new species have an external, visually obvious urogenital papilla that ...
Efetividade de métodos de identificação sexual em tilápias-do-nilo (oreochromis niloticus) revertidas sexualmente com hormônio em ração com diferentes granulometrias
(Universidade Federal de Uberlândia (UFU), 2009-01-01)
Three methods of sexual identification were evaluated in Nile tilapia (Oreochromis niloticus) at ages of 30, 60 and 90 days that were submitted to sexual reversion under administration of androgen hormone 17 alpha-methyl ...
Efetividade de métodos de identificação sexual em tilápias-do-nilo (oreochromis niloticus) revertidas sexualmente com hormônio em ração com diferentes granulometrias
(Universidade Federal de Uberlândia (UFU), 2009-01-01)
Three methods of sexual identification were evaluated in Nile tilapia (Oreochromis niloticus) at ages of 30, 60 and 90 days that were submitted to sexual reversion under administration of androgen hormone 17 alpha-methyl ...
A new genus and species of inseminating characid fish from the rio Xingu basin (Characiformes: Characidae)
(MAGNOLIA PRESS, 2009)
Phallobrycon adenacanthus, is described as a new genus and species belonging to Clade A characids of Malabarba & Weitzman (2003). The new taxon is the only characid possessing two developed spines on unbranched portions ...
Two new species and a review of the inseminating freshwater fish genus Monotocheirodon (Characiformes: Characidae) from Peru and Bolivia
(2013-07-26)
Two new species of inseminating freshwater fishes of the genus Monotocheirodon, family Characidae, are described from Peru. Males and females of both new species have an external, visually obvious urogenital papilla that ...
Testicular ultrastructure and morphology of the seminal pathway in Prochilodus scrofa
(2001-07-01)
The seminiferous tubules of Prochilodus scrofa present a coiled morphological arrangement with intertubular anastomoses and unrestricted spermatogonial distribution. The structural pattern of the seminiferous tubules is ...