Data/hora: 11/06/2024 03:49:09

Provedor de dados: 	83	
País: 	Brazil	
Título: 	Seminal characteristics and sensitivity of Astyanax lacustris (Characiformes: Characidae) sperm to cryoprotective solutions based on dimethylsufoxide and methylglicol	
Autores: 	Carneiro-Leite,Laicia; Bashiyo-Silva,Cristiane; Oliveira,Yasmim Alves Araújo; Borges,Laís Pedroso; Sanchez,Malbelys Padilla; Silva,Luciane Gomes da; Lobato,Stella Indira Rocha; Rodrigues-Lisoni,Flávia Cristina; Veríssimo-Silveira,Rosicleire; Ninhaus-Silveira,Alexandre.	
Data: 	2020-01-01	
Ano: 	2020	
Palavras-chave: 	Characiformes; DNA integrity; Freezing; Semen quality; Yellow-tailed Lambari.	
Resumo: 	Abstract This study aimed to determine the semen characteristics of Astyanax lacustris after hormonal induction and to evaluate the sensitivity of the species sperm to cryoprotective solutions based on the cryoprotectants dimethyl sulfoxide and methyl glycol. Volume, color, sperm concentration, total motility and aspects of sperm movement were analyzed using “Integrated Semen Analysis System”. Three different extenders were tested: A) glucose 5%+egg yolk 10%, B) BTS®5% and C) glucose 5% and two permeable cryoprotectants: dimethyl sulfoxide (Me2SO) and methyl glycol (MTG). Fresh A. lacustris semen presented total motility of 76.6±11.2%, motility duration of 33.0±2.2s, sperm concentration of 7.22±3.2×109sptz/mL and seminal osmolality of 219±0.03mOsm/kg-1. The toxicity test showed the highest total motility values at the MTG15%+A, Me2SO15%+B and Me2SO10%+C dilutions, and the Me2SO10%+C and Me2SO15%+C dilutions presented the highest values for curvilinear velocity, linear velocity and average velocity. The tested protocol was not effective at maintaining the viability of A. lacustris semen after freezing because no motility was observed in any of the dilutions. However, the Comet Assay demonstrated that cryoprotectant solutions were effective in protecting the genetic material of cells, as DNA damage levels were low, with no difference between control and Me2SO10% + A, dilutions MTG10%+C, Me2SO10%+B and Me2SO15%+B.	
Tipo: 	Info:eu-repo/semantics/article	
Idioma: 	Inglês	
Identificador: 	http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252020000300214	
Editor: 	Sociedade Brasileira de Ictiologia	
Relação: 	10.1590/1982-0224-2020-0039	
Formato: 	text/html	
Fonte: 	Neotropical Ichthyology  v.18 n.3 2020	
Fonte: 	info:eu-repo/semantics/openAccess