VARIATION IN THE POPULATION AGE STRUCTURE AND ITS INFLUENCE ON THE ADULT ACTIVITY IN Corcyra cephalonica (STAINTON) (LEPIDOPTERA: PYRALIDAE)
| dc.contributor.advisor | Thippaiah, M. | |
| dc.contributor.author | SOWJANYA, K. C. | |
| dc.date.accessioned | 2018-05-22T03:45:48Z | |
| dc.date.available | 2018-05-22T03:45:48Z | |
| dc.date.issued | 2017-08-08 | |
| dc.description.abstract | During the present investigation, intra-generation accumulation of variation in age-structure and effect of accumulated variation on adult emergence and activity pattern in Corcyra cephalonica was studied. Variation in developmental period at different stages of Corcyra was studied using same day laid eggs. At the egg stage 5 days of variation in developmental period was noticed. Considerable variation (head capsule width) among the individuals was also noticed during the larval stage. Head capsule width was measured at every four days. Accumulated variation in head capsule width increased from 0.0009 during first sampling to 0.029 at last sampling. However, coefficient of variation was almost same throughout the larval period. Moths started emerging on 52nd day of egg inoculation. Male moth emerged first (52nd day) followed by females on 54th day, suggesting occurrence of protandry in C. cephalonica. Moth emergence continued upto 113th day of egg inoculation. In entire population 68.9% females were mated and 31.1% remained unmated. Among the mated females, 76.35 % had mated once, 16.67 % mated twice, 5.18% was mated thrice, 0.45% mated four times and 1.35% mated five times. Males completed their developmental period earlier to females, though number instars remained same among them (7 to 8 instars). Average total developmental period was 45.3 ± 2.5 in males and 48.9 ± 3.3 days in females, suggesting gender associated difference in developmental period. | en_US |
| dc.identifier.other | Th-11759 | |
| dc.identifier.uri | http://krishikosh.egranth.ac.in/handle/1/5810046959 | |
| dc.language.iso | en | en_US |
| dc.pages | 109 | en_US |
| dc.publisher | UNIVERSITY OF AGRICULTURAL SCIENCES GKVK, BENGALURU | en_US |
| dc.sub | Entomology | en_US |
| dc.subject | null | en_US |
| dc.theme | VARIATION IN THE POPULATION AGE STRUCTURE AND ITS INFLUENCE | en_US |
| dc.these.type | M.Sc | en_US |
| dc.title | VARIATION IN THE POPULATION AGE STRUCTURE AND ITS INFLUENCE ON THE ADULT ACTIVITY IN Corcyra cephalonica (STAINTON) (LEPIDOPTERA: PYRALIDAE) | en_US |
| dc.type | Thesis | en_US |