Compared with the D-larvae and the umbo-larvae, the densities of the post larvae and the settled spats show rapid reductions at the end of the development process.
D形幼虫壳顶幼虫相比，壳顶后期幼虫及附着稚贝的密度大幅下降。
Compared with the D-larvae and the umbo-larvae, the densities of the post larvae and the settled spats show rapid reductions at the end of the development process.
D形幼虫壳顶幼虫相比，壳顶后期幼虫及附着稚贝的密度大幅下降。
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