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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 ...
Efetividade de métodos de identificação sexual em tilápias-do-nilo (Oreochromis niloticus) revertidas sexualmente com hormônio em ração com diferentes granulometrias
(2009-03-01)
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 a-methyltestosterone ...
Preliminary study on testicular germ cell isolation and transplantation in an endangered endemic species Brycon orbignyanus (Characiformes: Characidae)
(2019-01-01)
We aimed to develop a simplified protocol for transplantation of Brycon orbignyanus spermatogonial stem cells (SSCs) into Astyanax altiparanae testes. Brycon orbignyanus testes were enzymatically digested and SSC purified ...
SELECTION OF PACU FEMALES TO HORMONAL INDUCTION: EFFECT OF AGE AND OF EVALUATION METHODS
(Inst Pesca, 2016-01-01)
In this study, we investigated the reproductive cycle and spawning season of old (OFs) and young (YFs) P. mesopotamicus females, aiming to improve the process of selection of suitable fish for induced spawning. We also ...
Seleção de fêmeas de pacu para indução hormonal: Efeito da idade e dos métodos de avaliação
(2016-01-01)
In this study, we investigated the reproductive cycle and spawning season of old (OFs) and young (YFs) P. mesopotamicus females, aiming to improve the process of selection of suitable fish for induced spawning. We also ...
Aspectos anatômicos da cloaca de testudines
(Universidade Federal de UberlândiaBRPrograma de Pós-graduação em Ciências VeterináriasCiências AgráriasUFU, 2016)
Níveis de lisina em dietas para reprodutores de Rhamdia voulezi em tanques-rede
(Universidade Estadual Paulista (Unesp), 2014-12-12)
The aim was to evaluate the levels of lysine in diets to breeding of Rhamdia voulezi in cages evaluating the productive, reproductive performance, hormonal characteristics, organosomatic indices and amino acid incorporation ...
Transplante de espermatogônias tronco em peixes teleósteos, utilizando como modelo experimental a carpa comum (Cyprinus carpio)
(Universidade Estadual Paulista (Unesp), 2016-12-08)
Nos vertebrados, a espermatogênese é um processo de desenvolvimento celular altamente conservado e organizado, no qual uma pequena população de espermatogônias tronco produz continuamente milhões de espermatozóides, os ...
Detección del genotipo sexual en neohembras de Tilapia roja (Oreochromis sp.) mediante citogenética clásica y molecular en el valle del cauca
(2018-02-20)
La tecnología GMT ®(Tilapia genéticamente macho) se convierte en una alternativa viable para producir lotes monosexo machos de tilapia sin el uso de hormonas, pero como primer paso es necesario producir e identificar ...
Sperm motility of Prochilodus lineatus in relation to dilution rate and temperature of the activating medium
(2010-10-01)
The objective of this study was to assess the effects of an activating solution on the sperm motility duration (SMD) of 'curimbatá', Prochilodus lineatus through of the definition of qualitative and quantitative parameters ...