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dc.contributor.authorLegaspi, Ma. Irene
dc.contributor.authorTraifalgar, Rex Ferdinand M.
dc.contributor.authorde Jesus-Ayson, Evelyn Grace T.
dc.contributor.authorAndrino-Felarca, Karen Grace S.
dc.contributor.authorMamauag, Roger Edward
dc.date.accessioned2021-02-08T06:44:35Z
dc.date.available2021-02-08T06:44:35Z
dc.date.issued2021-04
dc.identifier.citationCabanilla-Legaspi, Ma. I. C., Traifalgar, R. F. M., de Jesus-Ayson, E. G. T., Andrino-Felarca, K. G. S., & Mamauag, R. E. P. (2021). Growth, metamorphosis and survival of orange-spotted rabbitfish (Siganus guttatus) larvae fed sodium iodide-supplemented brine shrimp (Artemia sp.). Aquaculture, 536, 736443.en
dc.identifier.issn0044-8486
dc.identifier.urihttp://hdl.handle.net/10862/6031
dc.description.abstractIn an attempt to improve the hatchery production of orange-spotted rabbitfish (Siganus guttatus), the present study evaluated the effects of iodine-supplementation of larval food (Artemia) on endogenous thyroid hormone (TH) levels in larvae, and subsequently on their metamorphosis, growth and survival. Rabbitfish larvae (20 days after hatching, DAH) were fed unsupplemented (control) and sodium iodide (0.8 g L−1) -supplemented Artemia. The larvae were reared in 250-L fiberglass tanks at a stocking density of five larvae L−1. Each treatment has three replicates. The study was conducted until 50% of the larval population in both treatments has completely metamorphosed. Iodine-supplementation in larval food resulted in significantly higher levels of thyroxine (T4) and triiodothyronine (T3), (TH) in rabbitfish larvae (p < 0.05). Treated rabbitfish larvae had significantly higher mean body weight (0.20 ± 0.01 g) than the control (0.14 ± 0.01 g) and a lower muscle fiber (MF) count (0.003 ± 0.001 MF μm−2) than the control (0.009 ± 0.002 MF um−2) (p < 0.05). However, survival was not different between the two treatments. Furthermore, using the statistical tool probit analysis on the metamorphic period index, it showed that 50% of the population in the control group metamorphosed at 42.4 DAH while 50% of the population in the treated group metamorphosed at 31.2 DAH. Cumulative stress index test indicated a positive response of larvae fed supplemented Artemia (p < 0.05). This study demonstrated that feeding sodium iodide-supplemented Artemia to rabbitfish larvae enhances the endogenous TH levels which in turn accelerates the metamorphosis and improves fish muscle fiber growth and stress tolerance.en
dc.description.sponsorshipThe authors are grateful to SEAFDEC/AQD for providing the experimental animal and the facilities (Budget Code 5175-T-RD) in the conduct of this study. Special thanks correspondingly for the staff and laboratory of Marine Fish Hatchery of SEAFDEC/AQD for the invaluable assistance during the experimental period. Appreciation is also due to the Philippine Department of Science and Technology- Accelerated Science and Technology Human Resource Development Program (DOST-ASTHRDP) for the academic research grant awarded to the main author (2000-42924). Special thanks to P.A. Palma, Dr. J. Tan-Fermin and Dr. M.R.R. Eguia for the discussions and critical review of the manuscript.en
dc.language.isoenen
dc.publisherElsevieren
dc.subjectArtemiaen
dc.subjectSiganusen
dc.subjectthyroid hormonesen
dc.subjectSiganus guttatusen
dc.titleGrowth, metamorphosis and survival of orange-spotted rabbitfish (Siganus guttatus) larvae fed sodium iodide-supplemented brine shrimp (Artemia sp.)en
dc.typeArticleen
dc.identifier.doi10.1016/j.aquaculture.2021.736443
dc.citation.volume536
dc.citation.spage736443
dc.citation.journalTitleAquacultureen
dc.subject.asfametamorphosisen
dc.subject.asfagrowthen
dc.subject.asfasurvivalen
dc.subject.asfabrinesen
dc.subject.asfaemulsionsen
dc.subject.asfabrine shrimp cultureen
dc.subject.asfaaquacultureen
dc.subject.asfafeeding experimentsen
dc.subject.asfasamplingen
dc.subject.asfaiodidesen
dc.subject.asfathyroid glanden
dc.subject.asfamusclesen
dc.subject.scientificNameSiganus guttatus
dc.subject.scientificNameArtemia
local.subjectArtemiaen
local.subjectMetamorphosisen
local.subjectSiganusen
local.subjectSodium iodideen
local.subjectThyroid hormonesen


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  • Journal Articles [1221]
    These papers were contributed by Department staff to various national and international journals.

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