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dc.contributor.authorToledo, Joebert D.
dc.contributor.authorNagai, Akimasa
dc.contributor.authorJavellana, Danilo
dc.date.accessioned2013-02-19T01:08:26Z
dc.date.available2013-02-19T01:08:26Z
dc.date.issued1993
dc.identifier.citationToledo, J. D., Nagai, A., & Javellana, D. (1993). Successive spawning of grouper, Epinephelus suillus (Valenciennes), in a tank and a floating net cage. Aquaculture, 115(3–4), 361–367.en
dc.identifier.issn0044-8486
dc.identifier.urihttp://hdl.handle.net/10862/1435
dc.descriptionPreliminary results were partially published in SEAFDEC Asian Aquaculture, 7 (4): 8–10 (1990).en
dc.description.abstractWild Epinephelus suillus (Valenciennes) were collected in 1989 to early 1990. To monitor natural spawning in captivity, 6 mature females (3.5–5.0 kg) and 4 mature males (7–12 kg) were transferred to a 4.6×4.6×2 m concrete tank, and one mature female (5.3 kg) was paired with two spermiating males (6.0–6.5 kg) in a 4×4×3 m floating net cage. Spontaneous spawning occurred successively 5–17 times a month from July 1990 to June 1991 (except in May) in the tank and 5–10 times a month from July to October 1990 in the floating net cage. The number of eggs collected, mean fertilization rate and mean hatching rate in the tank and the floating net cage each month ranged from 0.5–15.8 million and 2.3–3.9 million, 67–88% and 72–89%, and 2–81% and 29–68%, respectively. The onset of the monthly spawning cycle in both holding systems was observed over a period of 3 days either before or after the last quarter moon. The results indicate that a minimum number of E. suillus broodstock are required for a year-round supply of fertilized eggs.en
dc.language.isoenen
dc.publisherElsevieren
dc.subjectEpinephelus suillus
dc.subjectGroupersen
dc.titleSuccessive spawning of grouper, Epinephelus suillus (Valenciennes), in a tank and a floating net cageen
dc.typeArticleen
dc.citation.volume115
dc.citation.issue3-4
dc.citation.spage361
dc.citation.epage367
dc.citation.journalTitleAquacultureen
dc.subject.asfaBrood stocksen
dc.subject.asfaFecundityen
dc.subject.asfaFish cultureen
dc.subject.asfaSexual reproductionen
dc.subject.asfaSpawningen
dc.subject.asfaCage cultureen
dc.identifier.doi10.1016/0044-8486(93)90149-S


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  • AQD Journal Articles [1136]
    These papers were contributed by AQD staff to various national and international journals

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