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Development and growth of larvae of the dog conch, Strombus canarium (Mollusca: Gastropoda), in the laboratory


Citation

Che Cob, Zaidi and Arshad, Aziz and Abd. Ghaffar, Mazlan and Bujang, Japar Sidik and Wan Muda, Wan Lotfi (2009) Development and growth of larvae of the dog conch, Strombus canarium (Mollusca: Gastropoda), in the laboratory. Zoological Studies, 48 (1). pp. 1-11. ISSN 1021-5506

Abstract

Strombus canarium egg masses used in this study were collected while still underneath spawning females, and embryonic and post-hatching larval development was observed in the laboratory. Strombus canarium larvae were reared at 200 larvae/L in 2-L containers with 0.22 μm filtered seawater medium at a salinity of 30 ± 1 PSU, and fed a single algal species, Isochrysis galbana, at 1000 cells/ml. Fecundity was estimated at 48,745 ± 877 to 93,643 ± 1685 (n = 10) eggs/egg mass. The incubation time Fecundity was estimated at 48,745 ± 877 to 93,643 ± 1685 (n = 10) eggs/egg mass. The incubation time 93.34% ± 1.68% hatched, n = 3). The larvae have 2 velar lobes and 1.5 shell whorls at the time of hatching, with an average shell length of 216.77 ± 5.72 μm (n = 10). Based on prominent larval characters and visible morphological features, S. canarium larvae can be assigned to 4 different development stages, i.e. stages I, II, morphological features, S. canarium larvae can be assigned to 4 different development stages, i.e. stages I, II, hatching, and only metamorphosed when settlement cues (sediments from its natural habitat and 15 mM KCl) were introduced. They showed a short period of metamorphic competence, and no spontaneous metamorphosis was observed. Morphological changes and larval behaviors at the onset and during metamorphosis are also described.


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Additional Metadata

Item Type: Article
Divisions: Faculty of Science
Publisher: Biodiversity Research Center, Academia Sinica, Taiwan
Keywords: Veliger; Development; Metamorphosis; Malaysia
Depositing User: Norhazura Hamzah
Date Deposited: 11 Jun 2014 06:25
Last Modified: 06 May 2016 09:16
URI: http://psasir.upm.edu.my/id/eprint/13985
Statistic Details: View Download Statistic

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