Metabolic investigation during the ontogenetic process of dusky grouper larvae (Epinephelus marginatus)( Teleostei: Serranidae)

• Grant number: 11/12301-0
• Support type: Scholarships in Brazil - Doctorate
• Effective date (Start): January 01, 2012
• Effective date (End): July 31, 2015
• Field of knowledge: Biological Sciences - Physiology - Compared Physiology
• Principal Investigator: Renata Guimarães Moreira Whitton
• Grantee: Paulo Henrique de Mello
• Home Institution: Instituto de Biociências (IB). Universidade de São Paulo (USP). São Paulo , SP, Brazil
• Associated scholarship(s): 14/03834-2 - Spawning induction, egg quality and larval rearing of meagre (Argyrosomus regius, Asso, 1801) (Teleostei:Perciformes), BE.EP.DR

Abstract

In recent years, the overexploitation of marine resources is the main problem of marine systems worldwide. In Brazil, due to stronger types of human pressure, species of coast environments are showing significant reductions in their populations, reaching in some cases, the threat of extinction. The dusky grouper, Epinephelus marginatus is a teleost fish, sequential hermaphrodite, protogynous, which is threatened by IUCN (The World Conservation Union). Because of the protogynous hermaphroditism, obtaining males is a problem for the reproduction of E. marginatus in captivity however, our research group has made possible the process of sex inversion of this species using aromatase inhibitors (AI). Since the process of sex reversal of E. marginatus was established, our research group aims to investigate other difficulties in domestication of this species, as captive breeding and the larvae production. Thus, the main objective of this project is to better understand the basic aspects of larvae metabolism, in order to improve the larvae production of this species, aiming a future restocking program in southeastern Brazil. Besides also investigate the physiological responses in two rearing conditions (direct feed or mesocosmos), and the larvae will have its metabolism investigated over the first 25 days of development, using morphologic and metabolic tools.

Scientific publications

(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)

MELLO, P. H.; ARAUJO, B. C.; CAMPOS, M. F.; RODRIGUES-FILHO, J. A.; GARCIA, C. E. O.; MOREIRA, R. G. Embryonic and larval development and fatty-acid profile of Epinephelus marginatus spawned in captivity: tools applied to captive rearing. Journal of Fish Biology, v. 92, n. 4, p. 1126-1148, APR 2018. Web of Science Citations: 0.

Academic Publications

(References retrieved automatically from State of São Paulo Research Institutions)

MELLO, Paulo Henrique de. Morphological and metabolic investigations during the ontogeny of dusky grouper Epinephelus marginatus (Teleostei: Serranidae) larvae. 2015. Doctoral Thesis - Universidade de São Paulo (USP). Instituto de Biociências São Paulo.