Encontrados 23 documentos, a visualizar página 1 de 3
Gonadal morphology and difference in reproductive development of two isolated p...
Quirino, Patricia Postingel [UNESP]; de Siqueira-Silva, Diógenes Henrique; da Silva Rodrigues, Maira [UNESP]; dos Santos-Silva, Amanda PereiraMade available in DSpace on 2022-04-28T19:44:01Z (GMT). No. of bitstreams: 0 Previous issue date: 2021-01-01; Individuals of the same species may present different reproductive tactics depending on the environment in which they develop and mature. The present study aimed to define the gonadal development phases of males and females of Astyanax rivularis and to carry out a comparative analysis of the reproductiv...
Sperm quality of spontaneously occurring gynogenetic males in the yellowtail te...
Lázaro, Talita Maria; Rocha, Nathalia Raissa de Alcântara; Monzani, Paulo Sérgio; Nakaghi, Laura Satiko Okada [UNESP]; Senhorini, José AugustoMade available in DSpace on 2022-04-29T08:30:50Z (GMT). No. of bitstreams: 0 Previous issue date: 2021-01-01; Gynogenesis is a chromosomal manipulation technique where an offspring is generated exclusively from maternal inheritance. In the yellowtail tetra (Astyanax altiparanae) almost all gynogenetic fish were females, suggesting a genetic sex determination system of XX/XY. However, due to environmental (e.g. ...
Morphological and histochemical features of the digestive tract of Leiarius mar...
Matheus, Valquiria Aparecida; Faccioli, Claudemir Kuhn; Chedid, Renata Alari [UNESP]; Senhorini, José AugustoMade available in DSpace on 2022-04-29T08:32:05Z (GMT). No. of bitstreams: 0 Previous issue date: 2021-01-01; Leiarius marmoratus, a freshwater catfish from Pimelodidae family, shows great biological and commercial relevance because of its geographic distribution and adaptation to fish-farm. The knowledge of the morphological characteristics of the digestive tract is fundamental to the understanding of fish phy...
Sex-Dependent Inheritance of B Chromosomes in Psalidodon paranae (Teleostei, Ch...
Goes, Caio Augusto Gomes [UNESP]; Silva, Duílio Mazzoni Zerbinato De Andrade [UNESP]; Utsunomia, Ricardo; Nascimento, Nivaldo Ferreira DoMade available in DSpace on 2022-04-29T08:38:09Z (GMT). No. of bitstreams: 0 Previous issue date: 2021-12-01; B chromosomes are additional dispensable elements to the standard chromosomal set of an organism. In most cases, their transmission differs from Mendelian patterns, leading to their accumulation or extinction. The present study aimed to describe, for the first time, the transmission pattern of B chromos...
Supernumerary chromosome inheritance in the curimbatá (Prochilodus lineatus) of...
Voltolin, Tatiana Aparecida [UNESP]; Senhorini, José Augusto; Oliveira, Cláudio [UNESP]; Foresti, Fausto [UNESP]; Bortolozzi, Jehud [UNESP]Made available in DSpace on 2022-04-28T21:02:11Z (GMT). No. of bitstreams: 0 Previous issue date: 2010-01-01; Prochilodus lineatus is widely used in pisciculture projects, mainly in the south of Brazil. It shows a basic karyotype composed of 2n = 54 chromosomes, in addition to as many as seven supernumerary chromosomes, also known as B-chromosomes. These additional small chromosomes are frequently heterochromat...
Effects of triploid induction on innate immunity and hematology in Astyanax alt...
Levy-Pereira, Nycolas [UNESP]; Carriero, Mateus Maldonado; Yasui, George Shigueki; Meira, Caroline Munhoz; de Sousa, Ricardo Luiz MoroMade available in DSpace on 2022-04-29T08:30:31Z (GMT). No. of bitstreams: 0 Previous issue date: 2021-09-01; Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP); Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES); Triploid induction is a promising biotechnique that could be used to enhance aquaculture yields in the near future. However, studies conducted with several fish species hav...
First cytogenetic characterization of the amazon catfish leiarius marmoratus (G...
Do Prado, Fernanda Dotti [UNESP]; De Freitas Mourão, Andrea Abrigato; Foresti, Fausto [UNESP]; Senhorini, José Augusto; Porto-Foresti, Fábio [UNESP]Made available in DSpace on 2022-05-01T06:31:29Z (GMT). No. of bitstreams: 0 Previous issue date: 2021-01-01; This study reports the first cytogenetic characterization of the Amazonian catfish Leiarius marmoratus (“jandiá”) and its F1 (first generation) hybrid “cachandiá” with Pseudoplatystoma reticulatum (“cachara”). A diploid number of 56 chromosomes and a single argyrophilic nucleolus organizer region (Ag-NO...
Exposição aguda a condições hipereosmoticas reduz ativação do sêmen por urina e...
Rocha, Nathalia Alcântara; Schade, Gabriel Marra; Alves, Álvaro de Miranda; Silva, Claudia de Souza; Nakirimoto, Jacqueline Megumi; Lauri, Liura SanchezIn 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 conditions may reduce urine production and improve sperm quality. Thus, the aim of this work was to verify if acute exposure to various NaCl concentrations improves sperm quality in the yellowt...
Triploidization in the streaked prochilod Prochilodus lineatus inferred by flow...
Yasui, George Shigueki; Nakaghi, Laura Satiko Okada [UNESP]; Monzani, Paulo Sérgio; Nascimento, Nivaldo Ferreira do [UNESP]; Pereira dos Santos, MatheusMade available in DSpace on 2020-12-12T01:59:40Z (GMT). No. of bitstreams: 0 Previous issue date: 2020-06-01; Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP); The streaked prochilod Prochilodus lineatus is an important fish species from the Neotropical region. In this study, a protocol of triploidization was established by temperature shock. Fertilized eggs were shocked at 2 min post-fertilization...
Preliminary study on testicular germ cell isolation and transplantation in an e...
de Siqueira-Silva, Diógenes Henrique [UNESP]; dos Santos Silva, Amanda Pereira [UNESP]; da Silva Costa, Raphael [UNESP]; Senhorini, José AugustoMade available in DSpace on 2019-10-06T16:26:16Z (GMT). No. of bitstreams: 0 Previous issue date: 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 by a discontinuous density gradient. Endogenous spermatogenesis was suppressed in ...