Metamorphosis induction of the dog conch Strombus canarium (gastropoda: Strombidae) using cues associated with conch nursery habitat

Zaidi Che Cob, A. Arshad, J. S. Bujang, Wan Mohd. Lotfi Wan Muda, Mazlan Abd. Ghaffar

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

Strombus canarium is a commercially important gastropod that has great potential for advancement into aquaculture. In this study, the metamorphosis response of Strombus canarium larvae to various metamorphosis cues associated with conch nursery habitat and to KC1 and GABA, were tested. Bioassays were run as static, no choice experiment and adopting a continuous exposure approach. Strombus canarium larvae showed strong metamorphosis responses when sediment (i.e., conch nursery habitat sediment/SD-NU) and detrital substrata (i.e., Thalassia detritus leachate/T-LC) from their nursery habitat were used (p<0.05). There was no metamorphosis in treatments using sterilized conch nursery habitat sediment (SD-ST) and sediment taken from outside conch nursery habitat (SD-OT). Experiments using fresh macrophyte blades of Enhalus acoroides (EA), Thalassia hemprichii (TH), Halophila ovalis (HA) and Ulva (UL) and adult conditioned seawater (SD-SW) also showed negative respond. Conch larvae demonstrate active habitat selection during metamorphosis and no spontaneous metamorphosis was observed. Settlement in S. canarium is associative in nature where epibionts associated with conch nursery habitat could be the cue for the metamorphosis. However, the specific epibionts/inducers and mechanisms underlining the process were not studied and therefore are subjected to more detailed investigation. The use of KC1 was comparable with treatments using natural inducers (SD-NU and T-LC), thus was suggested for application in hatchery spat production of the species.

Original languageEnglish
Pages (from-to)628-635
Number of pages8
JournalJournal of Applied Sciences
Volume10
Issue number8
DOIs
Publication statusPublished - 2010

Fingerprint

Canarium
metamorphosis
Gastropoda
dogs
habitats
sediments
larvae
Halophila
Ulva
leachates
Strombidae
Strombus
habitat preferences
hatcheries
aquaculture
bioassays
seawater

Keywords

  • Dog conch
  • Gastropod
  • Metamorphosis
  • Settlement cues
  • Veliger

ASJC Scopus subject areas

  • General

Cite this

Metamorphosis induction of the dog conch Strombus canarium (gastropoda : Strombidae) using cues associated with conch nursery habitat. / Che Cob, Zaidi; Arshad, A.; Bujang, J. S.; Wan Muda, Wan Mohd. Lotfi; Abd. Ghaffar, Mazlan.

In: Journal of Applied Sciences, Vol. 10, No. 8, 2010, p. 628-635.

Research output: Contribution to journalArticle

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