Embryonic and larval development and fatty-acid profile of Epinephelus marginatus spawned in captivity: tools applied to captive rearing

Autor(es)

Mello, P. H. ^[1] ; Araujo, B. C. ^[1] ; Campos, M. F. ^[1] ; Rodrigues-Filho, J. A. ^[2] ; Garcia, C. E. O. ^[1] ; Moreira, R. G. ^[1]

Afiliação do(s) autor(es)

^[1] Univ Sao Paulo, Dept Fisiol, Inst Biociencias, Rua Matao, Trav 14, N-321, BR-05508090 Sao Paulo, SP - Brazil

^[2] Univ Estadual Paulista, Ctr Aquicultura CAUNESP, Via Acesso Prof Paulo Donato Castelane S-N, BR-14884900 Jaboticabal, SP - Brazil

• Tipo de documento: Artigo Científico
• Fonte: Journal of Fish Biology; v. 92, n. 4, p. 1126-1148, APR 2018.
• Citações Web of Science: 0

Resumo

Development, ontogeny of the digestive system and the fatty-acid (FA) profile, were analysed during development of Epinephelus marginatus. Larvae were analysed 7 and 17days post fertilization (dpf) to evaluate fatty-acid profile and morphological variables, respectively. Epinephelus marginatus larvae have relatively slow development of digestive structures, but were able to capture, ingest and digest prey by 5 dpf. Eggs were composed of high percentages of polyunsaturated fatty acids (PUFA) in phospholipids. The percentage of n3 PUFAs was higher than n6, especially docosahexaenoic acid (DHA), which exhibited higher levels compared with other marine species during the first 3days of development, both in terms of phospholipids and triglycerides. The larvae present a high content of docosahexaenoic acid-eicosapentaenoic acid (DHA-EPA) and, during this phase, live food of small size was required (copepods or SS-strain Brachionus rotundiformes), enriched with DHA-EPA. These results may guide future studies on the contribution of FAs required during this stage of the life cycle of E. marginatus, to advance knowledge of the use of these FAs throughout ontogeny and contribute to the culture of this species commercial production or restocking. (AU)

• Processo FAPESP: 11/50407-4 - Reproducao e larvicultura da garoupa-verdadeira epinephelus marginatus (teleostei:serranidae):a fisiologia como base para a producao de uma especie ameacada de extincao.
• Beneficiário: Renata Guimarães Moreira Whitton
• Modalidade de apoio: Auxílio à Pesquisa - Regular
• Processo FAPESP: 11/12301-0 - Investigações metabólicas durante o processo ontogenético das larvas da garoupa verdadeira (Epinephelus marginatus) (Teleostei: Serranidae)
• Beneficiário: Paulo Henrique de Mello
• Modalidade de apoio: Bolsas no Brasil - Doutorado