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Field evaluation of the response of Aedes albopictus ( Stegomyia albopicta ) to three oviposition attractants and different ovitrap placements using black and clear autocidal ovitraps in a rural area of Same, T imor‐ L este
Author(s) -
ANDERSON E. M.,
DAVIS J. A.
Publication year - 2014
Publication title -
medical and veterinary entomology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.028
H-Index - 82
eISSN - 1365-2915
pISSN - 0269-283X
DOI - 10.1111/mve.12062
Subject(s) - aedes albopictus , aedes , biology , larva , aedes aegypti , dengue fever , veterinary medicine , toxicology , ecology , virology , medicine
Known oviposition attractants or stimulants were compared, singly and in combination, using inexpensive autocidal ovitraps designed to trap emerging adults, in a rural area of T imor‐ L este during the dry season. In this area, the dengue vector Aedes albopictus ( Stegomyia albopicta ) S kuse ( D iptera: C ulicidae) was abundant, but Aedes aegypti ( Stegomyia aegypti ) L. was not detected. The attractants were: (a) a compound found in Aedes eggs (dodecanoic acid); (b) components of nitrogen, phosphorous and potassium‐based ( NPK ) fertilizer, and (c) infusions of discarded cigarette butts. A solution of ammonium phosphate and potassium nitrate was significantly more attractive to gravid Ae. albopictus than water only. Dodecanoic acid and cigarette butt infusions were not significantly more attractive than the control; however, they attracted various other D iptera and many non‐culicid larvae developed in ovitraps in which these substances were used; thus, the presence of eggs or larvae of other species may have deterred Aedes oviposition. Significantly more Aedes eggs were found in ovitraps under vegetation than in ovitraps placed inside houses or against external walls. Clear‐sided ovitraps in which black mesh was placed over a black ring floating on the water surface collected significantly fewer eggs than black ovitraps with identically placed mesh and rings.