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Rhythmical Hatching and Oncomiracidial Behaviour in the Hexabothriid Monogenean Rajonchocotyle Emarginata from the Gills of Raja spp.

Published online by Cambridge University Press:  11 May 2009

I. D. Whittington  and
G. C. Kearn
I. D. Whittington
Affiliation:
School of Biological Sciences, University of East Anglia, Norwich NR4 7TJ
G. C. Kearn
Affiliation:
School of Biological Sciences, University of East Anglia, Norwich NR4 7TJ
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Extract

In a study of the life-cycle of the hexabothriid monogenean Rajonchocotyle emarginata by Wiskin (1970), attempts to obtain newly hatched larvae were unsuccessful, and it was decided to make a new attempt to culture eggs and hatch larvae, at the same time investigating the effects of those factors found in other monogeneans to influence hatching, such as host mucus (see Kearn, 1974), shadows (see Kearn, 1982) and mechanical disturbance (see Bovet, 1967). The success of these renewed attempts to hatch the eggs of R. emarginata provided an opportunity to study the behaviour of the free-swimming oncomiracidium and attempts were made to relate hatching phenomena and larval behaviour to the behaviour of the host.

Type
Research Article
Information
Journal of the Marine Biological Association of the United Kingdom , Volume 66 , Issue 1 , February 1986 , pp. 93 - 111
Copyright
Copyright © Marine Biological Association of the United Kingdom 1986

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