caa a22 4500 386400148 CHVBK 20180307112155.0 cr unu---uuuuu 161130e198904 xx s 000 0 eng 10.1017/S0031182000062090 doi S0031182000062090 pii (NATIONALLICENCE)cambridge-10.1017/S0031182000062090 Barbara Downes J. Department of Biological Science, Florida State University, Tallahassee, FL 32306-2043, USA Host specificity, host location and dispersal: experimental conclusions from freshwater mites (Unionicola spp.) parasitizing unionid mussels [Elektronische Daten] [J. Barbara Downes] Parasites with low host specificity are predicted to search for hosts in ways less specific than highly host-specific species. They may also be better dispersers. Unionicolan mites that parasitize mussels are positively phototactic, with some species becoming negatively phototactic when host substances are present. This response has been interpreted as an aid to host location and occurs in species where adult mites have a relatively permanent association with hosts. Three species of Unionicola (Unionicolidae: Acari) that differ in host specificity co-occur in freshwater mussels (Unionidae) in St Mark's River in north Florida. Copyright © Cambridge University Press 1989 host specificity nationallicence Unionicola spp nationallicence host location nationallicence dispersal nationallicence phototactic response nationallicence Parasitology Cambridge University Press 98/2(1989-04), 189-196 0031-1820 98:2<189 1989 98 PAR https://doi.org/10.1017/S0031182000062090 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1017/S0031182000062090 text/html Onlinezugriff via DOI NATIONALLICENCE 100 1- Barbara Downes J. Department of Biological Science, Florida State University, Tallahassee, FL 32306-2043, USA NATIONALLICENCE 773 0- Parasitology Cambridge University Press 98/2(1989-04), 189-196 0031-1820 98:2<189 1989 98 PAR CC0 http://creativecommons.org/publicdomain/zero/1.0 nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-cambridge