Shannon Point Marine Center Faculty Publications

Document Type

Article

Publication Date

4-2009

Keywords

"Bathymodiolus" childressi, Deep-sea bivalve

Abstract

We describe culturing techniques and development for the cold-seep mussel “Bathymodiolus” childressi, the only deep-sea bivalve for which development has been detailed. Spawning was induced in mature mussels by injection of 2 mmol l−1 serotonin into the anterior adductor muscle. The mean egg diameter is 69.15 ± 2.36 μm (±S.D.; n = 50) and eggs are negatively buoyant. Cleavages are spiral and at 7–8 °C occur at a rate of one per 3–9 h through hatching, with free-swimming blastulae hatching by 40 h and shells beginning to develop by day 12. When temperature was raised to 12–14 °C after hatching, larvae developed to D-shell veligers by day 8 without being fed. Egg size and larval shell morphology indicate that “B.” childressi has a planktotrophic larva, but we did not observe feeding in culture. Wide distribution of this species throughout the Gulf of Mexico and amphi-Atlantic distributions of closely related congeners suggest that larvae may spend extended periods in the plankton. Duration of larval life was estimated for “B.” childressi by comparing calculated settlement times to known spawning seasons. These estimates suggest variability in the larval duration, with individuals spending more than a year in the plankton.

Publication Title

Biological Bulletin

Volume

216

Issue

2

First Page

149

Last Page

162

Required Publisher's Statement

https://doi.org/10.1086/BBLv216n2p149

Published by the University of Chicago Press

Type

Text

Rights

Copying of this document in whole or in part is allowable only for scholarly purposes. It is understood, however, that any copying or publication of this document for commercial purposes, or for financial gain, shall not be allowed without the author’s written permission.

Language

English

Format

application/pdf

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