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dc.contributor.authorAyson, Felix G.
dc.contributor.authorLam, Tom J.
dc.date.accessioned2013-02-05T04:02:12Z
dc.date.available2013-02-05T04:02:12Z
dc.date.issued1993
dc.identifier.citationAyson, F. G., & Lam, T. J. (1993). Thyroxine injection of female rabbitfish (Siganus guttatus) broodstock: changes in thyroid hormone levels in plasma, eggs, and yolk-sac larvae, and its effect on larval growth and survival. Aquaculture, 109(1), 83–93.en
dc.identifier.issn0044-8486
dc.identifier.urihttp://hdl.handle.net/10862/1404
dc.description.abstractThe thyroid hormone levels in female rabbitfish, Siganus guttatus, plasma, eggs, and yolk-sac larvae were measured before and after thyroxine (T4) injection in female spawners at doses of 1, 10, and 100 μg T4/g body weight (BW) fish. T4 and triiodothyronine (T3) levels in maternal plasma, eggs, and yolk-sac larvae were elevated following T4 administration. Apparently, there is conversion of T4 into T3 in the broodfish which suggests the presence of the enzyme, 5′-monodeiodinase, in rabbitfish. T4 and T3 in maternal circulation were easily transferred into the oocytes and subsequently into the larvae. Larvae from spawners treated with 10 and 100 μg T4/g BW tended to be longer and showed sornewhat better survival compared to the control and those injected with 1 μg T4/g BW 7 days after hatching. These findings suggest that thyroid hormones may play an important role during early larval development of rabbitfish.en
dc.language.isoenen
dc.publisherElsevieren
dc.subjectThyroxineen
dc.subjectSiganus guttatus
dc.titleThyroxine injection of female rabbitfish (Siganus guttatus) broodstock: changes in thyroid hormone levels in plasma, eggs, and yolk-sac larvae, and its effect on larval growth and survivalen
dc.typeArticleen
dc.identifier.doi10.1016/0044-8486(93)90488-K
dc.citation.volume109
dc.citation.issue1
dc.citation.spage83
dc.citation.epage93
dc.citation.journalTitleAquacultureen
seafdecaqd.library.callnumberVF SJ 0405
seafdecaqd.databank.controlnumber1993-01
dc.subject.asfaDevelopmental stagesen
dc.subject.asfaFish larvaeen
dc.subject.asfaGrowthen
dc.subject.asfaHormonesen
dc.subject.asfaLarval developmenten
dc.subject.asfaSurvivalen
dc.subject.asfaThyroiden


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