EFFICACY OF JHA, FENOXYCARB ON EGG HATCHABILITY AND POST EMBRYONIC DEVELOPMENT OF SPODOPTERA MAURITIA BOISD.(LEPIDOPTERA: NOCTUIDAE)
Journal: International Journal of Advanced Research (Vol.7, No. 6)Publication Date: 2019-06-01
Authors : Ayisha Banu C Sathyakala K P; Manogem E. M.;
Page : 80-86
Keywords : Egg hatchability LD50 JHA Fenoxycarb.;
Abstract
The egg hatchability of Spodoptera mauritia was studied by exposing freshly laid (0?24 h), following with (24-48h) and to (48?72 h) eggs to different concentrations (5?10-5 ? 1.0 ?M/?l) of juvenile hormone analogue (JHA), fenoxycarb. Dosage dependent response was observed after the treatment. The response was dependent on the age of eggs and also found higher doses resulted in maximum reduction in hatching. Treatments of eggs caused significant differences in egg mortality between control and treatments, with LD50=0.002 ?M, LD90=0.048 ?M and LD50=0.002 ?M, LD90=0.071 ?M for (0-24 h) and (24-48h) respectively. In the case of delayed treatment (48h-72h) eggs hatched as that of control. The result found that freshly laid eggs were more sensitive than those treated 2or 3days old eggs. Fenoxycarb applied eggs has delayed effects on postembryonic development. Here, we observed that the resulting larvae in earlier stages showed some effects such as increased larval duration, formation of intermediates and subsequent death. Therefore, JHA Fenoxycarb has great potency in suppressing the population by affecting hatchability of eggs of S mauritia, and thus provides a useful tool for pest management.
Other Latest Articles
- The Impact of Motivation on Employee Performance: The Case of North East District Administration
- FIREARM HOMICIDES IN BRAZIL: ANALYSIS FROM 2000 TO 2013
- ESTIMATION OF SERUM COPPER , ZINC AND COPPER ZINC RATIO IN UNTREATED PULMONARY TUBERCULOSIS PATIENTS IN COMPARISION TO HEALTHY SUBJECTS
- SEM ANALYSIS OF NONMETALLIC INCLUSION OF THE STAINLESS STEEL MODIFIED WITH ADDITION OF ZR AND TE
- Global Economic Crisis Effect on Shareholders’ Wealth in Agro - Allied Industries in Nigeria
Last modified: 2019-07-31 20:19:53