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- Title
CULICOIDES AND OTHER BITING FLIES ON THE PALOS VERDES PENINSULA OF SOUTHERN CALIFORNIA, AND THEIR POSSIBLE RELATIONSHIP TO EQUINE DERMATITIS.
- Authors
Mullens, Bradley A.; Owen, Jeb P.; Heft, David E.; Sobeck, Ruth V.
- Abstract
Biting insects were sampled to investigate the cause(s) of dermatitis (putative Culicoides hypersensitivity [CHS]) on horses on the Palos Verdes Peninsula, Los Angeles County, California. Suction traps baited with CO2 were operated at 5 sites from April 2002 to August 2003, supplemented by sampling from horses. Six species of Calicoides, 7 species of mosquitoes, and occasional Simulium and Stomoxys were collected in traps. Culicoides sonorensis was the most common midge trapped, although C. obsoletus and C. freeborni also were collected repeatedly. Insects from the belly region of horses in spring (peak dermatitis period) were mostly C. obsoletus, which were far more abundant than indicated by CO2-baited suction traps. The predominant mosquito was Culiseta incidens; Culex quinquefasciatus and Cx. tarsalis also could be common, depending on the site. Mosquitoes, particularly Cs. incidens, were more abundant the 2nd year (normal rainfall), whereas C. sonorensis and C. freeborni were more abundant the 1st year (drought period). Culicoides obsoletus, supplemented by C. sonorensis, is regarded as a primary suspect causing CHS in this area.
- Subjects
PALOS Verdes Peninsula (Calif.); CALIFORNIA; CULICOIDES; HORSES; SKIN inflammation; ALLERGIES; BITES &; stings
- Publication
Journal of the American Mosquito Control Association, 2005, Vol 21, Issue 1, p90
- ISSN
8756-971X
- Publication type
Article
- DOI
10.2987/8756-971X(2005)21[90:CAOBFO]2.0.CO;2