Probopyrus pandalicola (Packard) (Isopoda; Epicaridea): Swimming Responses of Cryptoniscus Larvae In Water Conditioned By Hosts Palaemonetes pugio (Holthius) (Decapoda; Palaemonidae)

Document Type

Article

Publication Date

9-14-1989

Department

Biological Sciences

School

Biological, Environmental, and Earth Sciences

Abstract

Swimming responses of Probopyrus pandalicola (Packard) cryptoniscus larvae to water solutions either conditioned or unconditioned by hosts were determined using a simple Y-tube choice apparatus. Results document that larvae swim at random or downstream with respect to water current in unconditioned control solutions. In the presence of either “crude extract” or “host-metabolite” solution, prepared using definitive hosts Palaemonetes pugio (Holthuis), cryptonisci are strongly rheopositive. However, upstream swimming cryptonisci swam toward the source of the host-conditioned water (i.e., made the correct ‘choice’) only when it was rather concentrated; when ‘host-metabolite’ solution was employed, rheopositive parasite larvae swam toward control solution as frequently as toward the experimental solution. We conclude that distance chemoreception may play a role in host finding by P. pandalicola.

Publication Title

Journal of Experimental Marine Biology and Ecology

Volume

130

Issue

1

First Page

9

Last Page

18

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