ScienceAsia 21 (1995): 147-160 |doi: 10.2306/scienceasia1513-1874.1995.21.147

BIOLOGICAL EFFECTS OF ALIPHATIC SESQUITERPENE ANALOGUE ON THE DEVELOPMENTAL STAGES OF THE FLESH FLY, PARASARCOPHAGA RUFICORNIS FABR. (DIPTERA : SARCOPHAGIDAE)

NOUWARATN SUKHAPANTH^a AND CHITAPA KETAVAN^b

ABSTRACT: Aliphatic sesquiterpene analogue (ASA) was tested for its biological activity against egg hatching and the various developmental stages of flesh flies (Parasarcophaga ruficornis Fabr.) utilizing the topical drop and dipping methods. Morphological studies were made of all stages of treated and untreated flies using stereo microscopic and SEM methods. ASA exerted the same effeCts on all stages tested,and a single dose of application affeCted all subsequent stages of the life cycle. Eggs exhibited shrinkage, malformation, breakage, and shell decomposition. In the early stages, new larval cuticle layers were not fully formed which interferred with molting. ASA also affected the reproductive system,resulting in failure of mating, interference with oogenesis and malformation of eggs in ovariole sacs,and low fecundity. In addition, it affected the body size, body color, and the development of the eyes and wings. In the treated adults, ASA shortened longevity, lowered the rates of mating and oviposition and inhibited the growth of ovaries and ovarioles.

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a Department of Biology, Faculty of Science, Mahidol University, Bangkok 10400, Thailand.
b Department of Entomology, Faculty of Agriculture, Kasetsart University, Bangkok 10900, Thailand.

Received March 15, 1995