Response of gravid Phlebotmus papatasi females to an oviposition attractant/stimulant associated with conspecific eggs.
No Thumbnail Available
Date
1995-10-01
Journal Title
Journal ISSN
Volume Title
Publisher
Abstract
Oviposition response of gravid P. papatasi females to conspecific eggs was studied in laboratory colonized sandflies. It was observed that significantly higher number of eggs were laid in the vicinity of conspecific eggs. However, a certain minimum number of eggs were required to be placed on the substratum to influence the rate of oviposition. The fecundity of females (mean = 56.5 +/- 4.9 eggs) exposed to conspecific eggs was significantly higher (P < 0.05) than that of blank control group. Perhaps, the chemical substances/pheromone of egg origin stimulated the oviposition rate. In an attempt to isolate the active ingredient, solvent washing of the conspecific eggs were tested. No increase in the rate of oviposition was noticed when the test site was treated with distilled water extract, whereas, significantly larger number of eggs were laid at the site treated with di-ethyl ether extract. This indicated that the oviposition attractant associated with the eggs dissolved in the organic solvent, but not in water. The possible application of this attractant for wild sandflies in nature and for regulating the site of oviposition on the substratum in the laboratory colonized sandflies needs to be explored.
Description
Keywords
Citation
Srinivasan R, Radjame K, Panicker KN, Dhanda V. Response of gravid Phlebotmus papatasi females to an oviposition attractant/stimulant associated with conspecific eggs. Indian Journal of Experimental Biology. 1995 Oct; 33(10): 757-60