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The influence of adult size and protein diet on the human-oriented behaviour of the bush fly, Musca vetustissima Walker (Diptera: Muscidae)

Published online by Cambridge University Press:  10 July 2009

Marina Tyndale-Biscoe
Affiliation:
CSIRO Division of Entomology, P.O. Box 1700, Canberra City, ACT 2601, Australia

Abstract

Adults of Musca vetustissima Walker that were caught when attracted to humans in the field responded positively in a later test when a hand was inserted in a cage, both in terms of proportion responding and time spent on the hand. Flies with a similar adult diet, whether of culture origin or the first-generation offspring of field-caught flies, responded similarly to the hand in the cage provided they were of similar size. A larger proportion of small flies than of large ones came to the hand, and stayed for longer periods. Large protein-deprived and dung-fed (suboptimal protein) flies had a nuisance value between 28 and 35 times as great as large blood-fed flies, while small blood-fed flies had a nuisance value 18 times as great. The nuisance value of small protein-deprived and dung-fed flies was between 61 and 67 times as great. Residence period on the hand increased with time in large protein-deprived flies but not in flies in the other categories tested. Few flies responded to the hand during the first 15 day-degrees C post eclosion, or when gravid or nearly gravid; the most responsive flies were in ovarian stages 0B, 1, 2 and 3. The implications of these results are discussed in terms of the fly nuisance levels experienced in south-eastern Australia.

Type
Original Articles
Copyright
Copyright © Cambridge University Press 1989

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