Unusual swimming mechanism in Calycopsis borchgrevinki (Hydrozoa)

Calycopsis borchgrevinki (Browne, 1910) from Antarctic waters was studied histologically. The entire bell is enclosed in a chitin-like skin, supported by chitin-like rods in the radial mesogleal fibres. In the tentacles a thick mesogloea is present without chitinous structures. The gonads are embedd...

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Bibliographic Details
Published in:Journal of Plankton Research
Main Author: van der Spoel, S.
Format: Text
Language:English
Published: Oxford University Press 1992
Subjects:
Online Access:http://plankt.oxfordjournals.org/cgi/content/short/14/3/423
https://doi.org/10.1093/plankt/14.3.423
Description
Summary:Calycopsis borchgrevinki (Browne, 1910) from Antarctic waters was studied histologically. The entire bell is enclosed in a chitin-like skin, supported by chitin-like rods in the radial mesogleal fibres. In the tentacles a thick mesogloea is present without chitinous structures. The gonads are embedded in the stomach folds. It is postulated that these characters are adaptations to ecological conditions in Antarctic waters.