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Reproductive behaviour and larval development of Tanais cavolinii (Crustacea: Tanaidacea)

Reproductive behaviour and larval development of Tanais cavolinii (Crustacea: Tanaidacea) 227 71 71 1 1 S. B. Johnson Y. G. Attramadal Department of Zoology University of Lund Helgonavägen 3 S-22362 Lund Sweden Abstract Mature female stages of Tanais cavolinii Milne Edwards are described according to degree of oostegite development. Sexual dimorphism of the chelipeds of copulatory males is explained functionally. An aberrant marsupium consisting of two closed ovisacs with a small slit for sperm transfer protects the brood from sudden unpredictable changes in salinity. Behavioural traits, courtship, copulation, and parental care are described and compared to those of Heterotanais oerstedi Kröyer. The different habitats selected by the two species are reflected by several adaptations in their morphology and behaviour as tube dwellers. A phenomenon unique among invertebrates is that the female T. cavolinii supplies additional yolk to the larvae just before their release. The production and timing of this food supply is described and its adaptive significance is discussed. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Marine Biology Springer Journals

Reproductive behaviour and larval development of Tanais cavolinii (Crustacea: Tanaidacea)

Johnson, S.; Attramadal, Y.
Marine Biology , Volume 71 (1) – Oct 1, 1982
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References (6)

Publisher
Springer Journals
Copyright
Copyright © 1982 by Springer-Verlag
Subject
Life Sciences; Biomedicine general; Oceanography; Ecology; Microbiology; Zoology
ISSN
0025-3162
eISSN
1432-1793
DOI
10.1007/BF00396987
Publisher site
See Article on Publisher Site

Abstract

227 71 71 1 1 S. B. Johnson Y. G. Attramadal Department of Zoology University of Lund Helgonavägen 3 S-22362 Lund Sweden Abstract Mature female stages of Tanais cavolinii Milne Edwards are described according to degree of oostegite development. Sexual dimorphism of the chelipeds of copulatory males is explained functionally. An aberrant marsupium consisting of two closed ovisacs with a small slit for sperm transfer protects the brood from sudden unpredictable changes in salinity. Behavioural traits, courtship, copulation, and parental care are described and compared to those of Heterotanais oerstedi Kröyer. The different habitats selected by the two species are reflected by several adaptations in their morphology and behaviour as tube dwellers. A phenomenon unique among invertebrates is that the female T. cavolinii supplies additional yolk to the larvae just before their release. The production and timing of this food supply is described and its adaptive significance is discussed.

Journal

Marine Biology – Springer Journals

Published: Oct 1, 1982

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