EFFECTS OF GAMMA RADIATION OF CULEX FATIGANS EGG RAFTS

Journal Article · Sun Oct 01 04:00:00 EDT 1961 · Bull. Calcutta School Trop. Med.

OSTI ID:4769804

Ghosh, S M; Hati, A K; Basu, S P

Egg rafts were exposed to 500, 1000, 1500, 2000, 2500, and 3000 r. With 500, 1000, and 1500 r, no variation in the time of hatching was noted as compared with controls. Most of the eggs hatched, metamorphosis from egg to adult was not delayed. and the adults that emerged from radiated eggs compared favorably with controls in size, vigor, and longevity. Progenies, followed up to the 5th generation, showed no abnormality. With 2000 r, however, most of the eggs did not hatch, and development of embryos was completely arrested. Only 25% of the eggs hatched in normal time and inost larvae died during the 1st and 2nd stages, very few reaching the 3rd and 4th stage. A few pupated, many dying after pupation. The adults died soon after emergence and incomplete emergence from the pupal case was noted. With 2500 r, very few larvae hatched, and they died during the 1st and the 2nd stages of development. With 3000 r embryos were killed outright. Thus, the dose required for a lethal effect on egg rafts of C. fatigans is much lower than that acquired for Aedes aegypti, which requires a minimum dose of 3000 r for a lethal action. (H.H.D.)

• Research Organization: Calcutta School of Tropical Medicine
• NSA Number: NSA-16-032773
• OSTI ID: 4769804
• Journal Information: Bull. Calcutta School Trop. Med., Journal Name: Bull. Calcutta School Trop. Med. Vol. Vol: 9
• Country of Publication: Country unknown/Code not available
• Language: English

Related Subjects

AGE
BIOLOGY AND MEDICINE
EGGS
EMBRYOS
GAMMA RADIATION
GENETICS
INSECTS
LETHAL DOSE
RADIATION DOSES
RADIATION EFFECTS