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Specificity of the host induced negative photo taxis of the symbiotic water mite unionicola formosa






Biological Bulletin (Woods Hole) 162(2): 163-170

Specificity of the host induced negative photo taxis of the symbiotic water mite unionicola formosa

The water mite U. formosa (Acarina: Unionicolidae) exhibits positive phototaxis when free of any chemical influence of its molluscan host, Anodonta imbecilis. When mites are exposed either to water from the host's mantle cavity or to a homogenate of host mantle tissue, the sign of their phototaxis reverses to negative. The behavioral threshold concentration of mantle homogenate that induces negative phototaxis to monochormatic light is .apprx. 0.7 .mu.g protein/ml. Negative phototaxis does not occur in the presence of any chemical influence of the bivalves Elliptio complanata or A. cataracta, neither of which species harbors this symbiont at the study site. A component of mantle tissue from A. imbecilis that elicits the negative phototaxis is heat labile, sensitive to trypsin, and has a MW in excess of 10,000 daltons.


Accession: 006459070



Related references

Roberts E.A.; Dimock R.V.Jr, 1977: Photo taxis by the symbiotic water mite unionicola formosa. American Zoologist 17(4): 940

Roberts, EA.; Dimock, R V.; Jr.; Forward, R.B.; Jr., 1978: Positive and host-induced negative phototaxis of the symbiotic water mite Unionicola formosa. The symbiotic mite U. formosa is positively phototactic when free of any chemical influence of its molluscan host Anodonta imbecilis and negatively phototactic in the presence of host tissue homogenate. Light-adapted mites exhibit maximal positive...

Edwards D.D.; Dimock R.V.Jr, 1991: The ontogeny of host recognition behavior by the symbiotic water mite unionicola formosa. American Zoologist 31(5): 145A

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Larochelle P.B.; Dimock R.V.Jr, 1981: Behavioral aspects of host recognition by the symbiotic water mite unionicola formosa acarina unionicolidae. The occurrence and specificity of host recognition behavior of adult and nymphal U. formosa and the capability of adult mites to recolonize various mussel species were examined. Adult U. formosa aggregated on excised tissue from their host mussel,...

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Edwards, D.D.; Bogardus, R.; Wilhite, N., 1998: Geographic differences in host specialization between the symbiotic water mites Unionicola formosa and Unionicola foili (Acari: Unionicolidae). The host specificity and population genetic structure of U. foili from the host mussel Utterbackia imbecillis, and Unionicola formosa from the mussels Pyganodon cataracta, Pyganodon grandis and Anodonta suborbiculata were examined over a broad geo...

Roberts E.A.; Dimock R.V.Jr, 1978: Population structure of the symbiotic water mite unionicola formosa acarina unionicolidae. ASB Bulletin 25(2): 33

Edwards, D.D.; Bogardus, R.; Wilhite, N., 1999: Geographic differences in host specialization between the symbiotic water mites Unionicola formosa and U foili. Bruin, J , van der Geest, L P S , Sabelis, M W Series Entomologica (Dordrecht) Ecology and Evolution of the Acari 195-206

Dimock R.V.Jr, 1977: Chemically mediated reversal of photo taxis in a symbiotic water mite acarina unionicolidae. Asb Bulletin: 81