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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

The effects of sGnRHa implants on Piaractus mesopotamicus female breeders. An approach addressed to aquaculture

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Author(s):
Kuradomi, Rafael Yutaka [1] ; Foresti, Fausto [1, 2] ; Batlouni, Sergio Ricardo [1]
Total Authors: 3
Affiliation:
[1] Univ Estadual Paulista, UNESP, UNESP CAUNESP, Ctr Aquicultura, Via Acesso Prof Paulo Donato Castellane S-N, BR-14884900 Jaboticabal, SP - Brazil
[2] Univ Estadual Paulista, UNESP, Inst Biociencias, Dept Morfol, Dist Rubiao Junior S-N, BR-18618970 Botucatu, SP - Brazil
Total Affiliations: 2
Document type: Journal article
Source: AQUACULTURE INTERNATIONAL; v. 25, n. 6, p. 2259-2273, DEC 2017.
Web of Science Citations: 4
Abstract

In this study, we evaluated the potential use of sGnRHa slow-release implants (150 mu g - OvaplantA (R)) for promoting an increased number of suitable Piaractus mesopotamicus females for induced spawning in a predictable period. To that, fshb, lhb, and gh gene expression, ovarian stereological evaluation and gonadal steroid concentrations were compared between treated and control females (n = 18) at 21, 35, and 115 days after sGnRHa implantation (DAI). The major differences between groups were observed at 35 DAI, when lhb and fshb were, respectively, up and downregulated for treated females compared to the controls, and the frequency of treated females in an advanced maturation class was higher (60%) than the controls (20%). Especially for promoting a significant change in the gonadotrophins gene expression levels, we demonstrated for the first time that sGnRHa slow-release implants has potential to be used to manipulate the reproductive cycle increasing the number of suitable Piaractus mesopotamicus females for induced spawning in a predictable period. However, a definitive protocol still depends on more studies involving a greater number of treatments and replicates. (AU)

FAPESP's process: 10/05286-1 - Synchronization of the ovarian maturation process in pacu (Piaractus mesopotamicus)
Grantee:Fausto Foresti
Support Opportunities: Regular Research Grants
FAPESP's process: 10/00825-1 - Synchronization of the ovarian maturation process in pacu (Piaractus mesopotamicus)
Grantee:Rafael Yutaka Kuradomi
Support Opportunities: Scholarships in Brazil - Doctorate