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Free Content Extra-embryonic nutrition in the prosobranch gastropod Urosalpinx cinerea (Say, 1822)

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The oyster drill Urosalpinx cinerea deposits egg capsules containing eggs that are surrounded by a viscous albumen. The capsules do not contain nurse eggs, but during development the embryos appear to ingest the capsular albumen. In capsules collected from Long Island Sound, the number of embryos per capsule varied widely, as did capsule volume. Hatching size among these capsules also varied, and was strongly correlated with the mean volume of albumen available per embryo. The data suggest that in U. cinerea, albumen consumption by embryos increases their overall size at hatching and that differences among capsules in the volume of albumen available to the embryos result in a wide range of hatching sizes.

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Document Type: Research Article

Publication date: 1986-09-01

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  • The Bulletin of Marine Science is dedicated to the dissemination of high quality research from the world's oceans. All aspects of marine science are treated by the Bulletin of Marine Science, including papers in marine biology, biological oceanography, fisheries, marine affairs, applied marine physics, marine geology and geophysics, marine and atmospheric chemistry, and meteorology and physical oceanography.
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