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Hatch-as-hatch-can: tricks of the trade in coleoid hatchlings (Mollusca: Cephalopoda)

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Abstract:

All coleoid hatchlings have a special complex of glandular cells situated at the mantle tip, which store a hatching enzyme that is released at the close of embryonic development; it locally dissolves the chorion membrane and any surrounding envelopes, thus producing a hatch opening. In most coleoids the hatchling also uses auxiliary equipment and actions to effectively extract itself from the egg case. This article considers the co-aptation between parental (egg cases) and filial contributions (hatching gland etc) in different coleoid groups.

Keywords: CEPHALOPODA; COLEOIDEA; EMBRYONIC DEVELOPMENT; HATCHING

Document Type: Research Article

DOI: http://dx.doi.org/10.1127/0077-7749/2012/0261

Publication date: October 1, 2012

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  • Neues Jahrbuch für Geologie und Paläontologie continuously publishes current original contributions from all fields of geology, ever since its foundation in 1807. All published contributions are in the English language.
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