Open AccessEffect of different maturation diets on reproductive performance of the broodstock of purple mangrove crab, Scylla tranquebarica
Author(s) -
Fui Yin Thien,
Annita Seok Kian Yong
Publication year - 2017
Publication title -
borneo journal of marine science and aquaculture
Language(s) - English
Resource type - Journals
eISSN - 2600-8882
pISSN - 2600-8637
DOI - 10.51200/bjomsa.v1i0.990
Subject(s) - broodstock , biology , hatching , zoology , astaxanthin , gonadosomatic index , fishery , aquaculture , fecundity , botany , population , fish <actinopterygii> , demography , sociology , carotenoid
The present study was aimed at evaluating the reproductive performance of the broodstock of purple mangrove crab (Scylla tranquebarica) fed natural food and formulated diets supplemented with astaxanthin and/or DHA. Formulated diets were supplemented with 500 mg kg-1 of astaxanthin (FA), 10 g kg-1 of DHA (FD) and both astaxanthin and DHA (FA+D). Diet without astaxanthin and DHA (FCon) and natural food (NF) consisted of forage fish (Valamugil sp.), shrimp (Penaeid sp.) and mangrove clam (Polymesoda sp.) to serve as control. Female broodstock of initial body weight 129.07±17.03 g were stocked in HDPE tank and cultured under recirculating water system. Broodstock maturation was monitored until spawning. Reproductive performance of female and condition of the larvae were also evaluated. After 50 weeks, broodstock fed FA+D diet showed better maturation percentage, spawning rate, gonadosomatic index, oocytes diameter, molting, molt death syndrome and survival rate than FCon group (P0.05) to the FA+D group but diet FD resulted in better performance than FA. Broodstock fed FA+D diet had the highest hatching rate, number of larvae produced and significantly higher zoea II survival compared to FCon and NF groups (P