dc.contributor.author | Ayson, Felix G. | |
dc.contributor.author | Lam, Tom J. | |
dc.date.accessioned | 2013-02-05T04:02:12Z | |
dc.date.available | 2013-02-05T04:02:12Z | |
dc.date.issued | 1993 | |
dc.identifier.citation | Ayson, 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.issn | 0044-8486 | |
dc.identifier.uri | http://hdl.handle.net/10862/1404 | |
dc.description.abstract | The 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.iso | en | en |
dc.publisher | Elsevier | en |
dc.subject | thyroxine | en |
dc.subject | Siganus guttatus | en |
dc.title | 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 | en |
dc.type | Article | en |
dc.citation.volume | 109 | |
dc.citation.issue | 1 | |
dc.citation.spage | 83 | |
dc.citation.epage | 93 | |
dc.citation.journalTitle | Aquaculture | en |
dc.subject.asfa | developmental stages | en |
dc.subject.asfa | fish larvae | en |
dc.subject.asfa | growth | en |
dc.subject.asfa | hormones | en |
dc.subject.asfa | larval stage | en |
dc.subject.asfa | survival | en |
dc.subject.asfa | thyroid gland | en |
dc.identifier.doi | 10.1016/0044-8486(93)90488-K | |