Oocyte viability and cortical activation under different salt solutions in Prochilodus lineatus (Teleostei: Prochilodontidae)

Autor(es)

Ribeiro, D. C. ^[1] ; Chagas, J. M. A. ^[2] ; Bashiyo-Silva, C. ^{[2, 3]} ; Costa, R. S. ^{[3, 1]} ; Verissimo-Silveira, R. ^{[2, 3]} ; Ninhaus-Silveira, A. ^{[2, 3]}

Afiliação do(s) autor(es)

^[1] Sao Paulo State Univ, Inst Biosci Humanities & Exact Sci Ibilce, UNESP, Sao Paulo - Brazil

^[2] Sao Paulo State Univ, Inst Biosci IBB, UNESP, Sao Paulo - Brazil

^[3] Sao Paulo State Univ, FEIS, UNESP, Sao Paulo - Brazil

• Tipo de documento: Artigo Científico
• Fonte: REPRODUCTION IN DOMESTIC ANIMALS; v. 52, n. 6, p. 932-938, DEC 2017.
• Citações Web of Science: 1

Resumo

This study aimed to evaluate the effect of five salt solutions in the maintenance of morphological features of cortical alveolus, hydration and fertilization capacity of Prochilodus lineatus oocytes. For this purpose, five saline solutions were tested: Ringer's solution, Ringer's lactate solution, Hank's balanced salt solution (HBSS), Hank's balanced salt solution without calcium (HBSS without calcium) and solution for salmonid eggs. Oocytes were maintained for 2 hr in saline solution with controlled temperature subsequently evaluated for hydration, cortical activation and fertilization ability. In the evaluation of the fertilization ability, two controls were used: C1-fertilized oocytes after extrusion-and C2-oocytes kept in ovarian fluid and fertilized after 2 hr. There was a significant reduction in the viability of oocytes C2 (28.8% +/- 12.9%) compared to C1 (65.3% +/- 26.7%), and no significant differences were found between treatments HBSS and HBSS without calcium and C2. Only HBSS and HBSS without calcium maintained the non-activated state of the gametes, with a fertilization rate of 16.4% +/- 6.7% and 5.6% +/- 2.3%, respectively; however, they did not extend the viability of oocytes, such that they continued to undergo degradation during the storage period, similar to oocytes retained only in ovarian fluid. (AU)

• Processo FAPESP: 13/10807-9 - Criopreservação de oócitos de Prochilodus lineatus (Valenciennes, 1836)
• Beneficiário: Douglas de Castro Ribeiro
• Modalidade de apoio: Bolsas no Brasil - Mestrado