Changes of the setae on the mouthparts of the red king crab Paralithodes camtschaticus (Tilesius, 1815) (Decapoda: Lithodidae) during ontogeny

Changes of the setae on the mouthparts of the red king crab Paralithodes camtschaticus (Tilesius,... Setae on the mouthparts of juvenile and adult red king crabs, Paralithodes camtschaticus (Tilesius, 1815), were studied. A total of seven types of setae have been differentiated; their distribution over the mouthparts was determined. It was established that setules and denticles on the surface of setae show a tendency to shorten and/or disappear as the body grows; the length of the setae decreases relative to the size of the individual; the number of setae of most types increases considerably, forming dense groups of setae. These changes are apparently related to the fact that the effectiveness of the functions that are performed by solitary setae decreases with the growth in the size of an individual; these functions are subsequently assumed by groups of setae. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Russian Journal of Marine Biology Springer Journals

Changes of the setae on the mouthparts of the red king crab Paralithodes camtschaticus (Tilesius, 1815) (Decapoda: Lithodidae) during ontogeny

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Publisher
Pleiades Publishing
Copyright
Copyright © 2016 by Pleiades Publishing, Ltd.
Subject
Life Sciences; Freshwater & Marine Ecology
ISSN
1063-0740
eISSN
1608-3377
D.O.I.
10.1134/S1063074016010041
Publisher site
See Article on Publisher Site

Abstract

Setae on the mouthparts of juvenile and adult red king crabs, Paralithodes camtschaticus (Tilesius, 1815), were studied. A total of seven types of setae have been differentiated; their distribution over the mouthparts was determined. It was established that setules and denticles on the surface of setae show a tendency to shorten and/or disappear as the body grows; the length of the setae decreases relative to the size of the individual; the number of setae of most types increases considerably, forming dense groups of setae. These changes are apparently related to the fact that the effectiveness of the functions that are performed by solitary setae decreases with the growth in the size of an individual; these functions are subsequently assumed by groups of setae.

Journal

Russian Journal of Marine BiologySpringer Journals

Published: Apr 8, 2016

References

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