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2009•Aquaculture ResearchOpen access

Developmental stages, larval and post-larval growth of angelwing clamPholas orientalis

Beewah Ng, Aileen Tan Shau Hwai, Zulfigar Yasin

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Abstract

Angelwing clam were induced to spawn by thermal stimulation. Mature eggs measured 50 μm in diameter. Cell division occurred within 36 min after fertilization. Mobile trochophore larvae were seen after 12 h and larvae developed within 18 h. Reared on a diet of Isochrysis galbana the larvae reached the umbo stage in 6–7 days. On day 10 the foot could be seen and settlement occurred if a suitable substrate was present. The larvae completed metamorphosis into juveniles within 20 days after settling.

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Angelwing clam were induced to spawn by thermal stimulation. Mature eggs measured 50 μm in diameter. Cell division occurred within 36 min after fertilization. Mobile trochophore larvae were seen after 12 h and larvae developed within 18 h. Reared on a diet of Isochrysis galbana the larvae reached the umbo stage in 6–7 days. On day 10 the foot could be seen and settlement occurred if a suitable substrate was present. The larvae completed metamorphosis into juveniles within 20 days after settling.

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Available abstract

Angelwing clam were induced to spawn by thermal stimulation. Mature eggs measured 50 μm in diameter. Cell division occurred within 36 min after fertilization. Mobile trochophore larvae were seen after 12 h and larvae developed within 18 h. Reared on a diet of Isochrysis galbana the larvae reached the umbo stage in 6–7 days. On day 10 the foot could be seen and settlement occurred if a suitable substrate was present. The larvae completed metamorphosis into juveniles within 20 days after settling.

Key concepts: Biology, Metamorphosis, Spawn (biology), Larva, Isochrysis galbana, Human fertilization, Fishery, Animal science

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Developmental stages, larval and post-larval growth of angelwing clamPholas orientalis — Research Paper | ScholarLens