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Evidence of self-fertilization in certain species of barnacles

Published online by Cambridge University Press:  11 May 2009

H. Barnes  and
D. J. Crisp
H. Barnes
Affiliation:
The Marine Station, Millport
D. J. Crisp
Affiliation:
Marine Biology Station, University College of North Wales, Bangor
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Extract

Isolated individuals of certain species of cirripedes are known to remain unfertilized at the time when the majority of contiguous individuals are carrying egg masses. From a very large number of observations on both Balanus balanoides (L.) and Elminius modestus Darwin (Crisp, 1950, 1956) there remains little doubt that in these two species copulation is necessary before eggs are brought into the mantle cavity where they are fertilized. Though fewer field observations have been made, Balanus crenatus Bruguière appears to behave similarly, isolated specimens grown on raft-exposed panels never bearing fertilized egg masses (Crisp, 1950; Barnes, unpublished observation). B. balanus (L.) (= B. porcatus da Costa) is also in all probability an obligatory cross-fertilizing hermaphrodite, though the available evidence does not exclude the possibility of self-fertilization in rare instances (Crisp, 1954; Barnes & Barnes, 1954).

Type
Research Article
Information
Journal of the Marine Biological Association of the United Kingdom , Volume 35 , Issue 3 , October 1956 , pp. 631 - 639
Copyright
Copyright © Marine Biological Association of the United Kingdom 1956

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References

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