Probopyrus pandalicola (Packard) (Isopoda; Epicaridea): Swimming Responses of Cryptoniscus Larvae In Water Conditioned By Hosts Palaemonetes pugio (Holthius) (Decapoda; Palaemonidae)
Biological, Environmental, and Earth Sciences
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.
Journal of Experimental Marine Biology and Ecology
Dale, W. E.
(1989). Probopyrus pandalicola (Packard) (Isopoda; Epicaridea): Swimming Responses of Cryptoniscus Larvae In Water Conditioned By Hosts Palaemonetes pugio (Holthius) (Decapoda; Palaemonidae). Journal of Experimental Marine Biology and Ecology, 130(1), 9-18.
Available at: https://aquila.usm.edu/fac_pubs/17020