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Stereological analysis of gonads from diploid and triploid fish yellowtail tetra Astyanax altiparanae (Garutti & Britski) in laboratory conditions
(Cambridge Univ Press, 2017-08-01)
This study aimed to examine the gonadal morphology of diploid and triploid fish through stereological analysis. Triploid individuals were obtained after temperature shock (40 degrees C for 2 min) at 2 min post-fertilization ...
The influence of increased water temperature on the duration of spermatogenesis in a neotropical fish, Astyanax altiparanae (Characiformes, Characidae)
(2020-01-01)
In view of the established climate change scenario and the consequent changes in global temperature, it is essential to study its effects on animal spermatogenesis. Therefore, the aim of this study was to verify the duration ...
Meiotic self-pairing of the psalidodon (Characiformes, characidae) iso-b chromosome: A successful perpetuation mechanism
(2021-01-01)
B chromosomes are non-essential additional genomic elements present in several animal and plant species. In fishes, species of the genus Psalidodon (Characiformes, Characidae) harbor great karyotype diversity, and multiple ...
The effects of temperature and busulfan (Myleran) on the yellowtail tetra Astyanax altiparanae (Pisces, Characiformes) spermatogenesis
(Elsevier B. V., 2015-10-01)
We aimed to standardize a protocol to suppress spermatogenesis in the characiform fish, Astyanax altiparanae, for future use as a host in germ cell transplant research, opening opportunities for a range of studies, such ...
Biogeografia histórica do lambari de ampla distribuição Astyanax aff. bimaculatus (Teleostei: Characidae) no sudeste brasileiro, com base em padrões de variação citogenéticos e molecularesHistorial biogeography of the wide distribution lambari Astyanax aff. bimaculatus (Teleostei: Characidae) on southeastern Brazil, based on cytogenetic and molecular data
(Universidade Federal de ViçosaBRGenética animal; Genética molecular e de microrganismos; Genética quantitativa; Genética vegetal; MeMestrado em Genética e MelhoramentoUFV, 2015)
Reproductive cycle of the tetra Astyanax bimaculatus (Characiformes: Characidae) collected in Amazonian streams
(2019-01-01)
SummaryA histological characterization of gonadal development in the tetra Astyanax bimaculatus was performed, aimed at determining its reproductive cycle in streams localized inside the Amazonian forest. Collections were ...
Acute exposure to hyperosmotic conditions reduces sperm activation by urine in the yellowtail tetra astyanax altiparanae, a freshwater teleost fishExposição aguda a condições hipereosmoticas reduz ativação do sêmen por urina em lambari do-rabo-amarelo (Astyanax altiparanae), um teleósteo de água doce
(2020-01-01)
In freshwater fish with external fertilization, sperm sampling can be contaminated with urine, which triggers motility and gives rise to decreased fertilization success. The maintenance of freshwater fish in hyperosmotic ...