Seasonal abundance of horse flies (Diptera: Tabanidae) from two locations in eastern Croatia (CROSBI ID 122281)
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Krčmar, Stjepan
engleski
Seasonal abundance of horse flies (Diptera: Tabanidae) from two locations in eastern Croatia
A total of 10, 539 tabanid horse flies from 22 species and five genera was collected in the Tikveš forest within the Kopački rit Nature Park in eastern Croatia. Seasonal abundance was analyzed for the six most abundant species. Tabanus maculicornis, Tabanus tergestinus and Haematopota pluvialis reached their highest peak of abundance in the fourth week of June. Atylotus loewianus and Tabanus bromius reached their highest peak of abundance in the first week of August, whereas Tabanus sudeticus reached its maximum abundance in the third week of July. Horse flies also were collected once a week on the pasture at Petrijevci from mid-May to mid- September during 1993. Paired collections were made from a Malaise trap and from a horse by using a sweep net. A total of 2, 867 tabanids belonging to 26 species was collected. The number of tabanids collected on horses was much higher than the total captured with Malaise traps. On their natural host (horse), 2, 6 times more tabanids were collected than in the traps. Seasonal abundance was analyzed only for the eight most abundant species. Chrysops paralellogrammus, Tabanus autumnalis, Tabanus bromius, Tabanus tergestinus, Haematopota pluvialis, and Haematopota subcylindrica all reached their highest peak of abundance in the second week of July, whereas Tabanus maculicornis reached the maximal peak of abundance in the third week of June. Seasonal meteorological variability that occurs periodically from one year to another has a significant influence on the maximal peaks of tabanid abundance.
diptera ; tabanidae ; seasonal abundance ; Croatia
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