Morphological effects of insect growth regulating compounds on Aedes aegypti (Diptera: Culicidae) larvae. |
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Authors: | J Cocke A C Bridges R T Mayer J K Olson |
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Affiliation: | 1. Texas A&M Agricultural Research and Extension Center Weslaco, Texas, USA;2. Veterinary Toxicology and Fntomology Research Laboratory Agricultural Research-Science and Education Administration U.S. Department of Agriculture College Station, Texas, USA |
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Abstract: | Cuticular development of larvae was examined by electron microscopy and comparisons were made between larvae exposed to methoprene, isopropyl (E, E)-11-methoxy-3, 7, 11-trimethyl-2, 4-dodecadienoate, those treated with the fluorescent insect growth regulator, 5-[[[5-(dimethylamino)-1-naphthalenyl]-sulfonyl]amino]-1, 3-benzodioxole (DNSAB), and untreated larvae. Larvae of all three groups were routinely fixed at 24, 48, and 72 hr posttreatment. Thin sections of the sixth-abdominal segment, anal papillae, midgut tissue, and Malpighian tubules were examined for morphological variations from controls. |
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