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Structure and function of the fifth pair of pleopods of male Euchaeta norvegica (Copepoda: Calanoida)

Published online by Cambridge University Press:  11 May 2009

C. C. E. Hopkins ,
J. Mauchline  and
D. S. Mclusky
C. C. E. Hopkins
Affiliation:
†Department of Biology, University of Stirling, Stirling, Scotland
J. Mauchline
Affiliation:
†Department of Biology, University of Stirling, Stirling, Scotland
D. S. Mclusky
Affiliation:
†Dunstaffnage Marine Research Laboratory, Oban, Scotland
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Extract

The structure of the fifth pair of pleopods, modified as secondary sexual characters, in male Euchaeta norvegica is described in detail. The pleopods are biramous. The right pleopod, of relatively simple structure, is used solely to grasp the urosome of the female during transfer and placement of the spermatophore. The left pleopod is complex in form and is used to grasp the spermatophore as it is extruded from the ductus ejaculatorius. The method of grasping the spermatophore is described. The optimal mating position is deduced from the structure and functioning of the pleopods.

Type
Research Article
Information
Journal of the Marine Biological Association of the United Kingdom , Volume 58 , Issue 3 , August 1978 , pp. 631 - 637
Copyright
Copyright © Marine Biological Association of the United Kingdom 1978

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