Inability of populations of Callosobruchus maculatus to develop tolerance to exposures of acute gamma irradiation
The reproductive capacity and resistance to an acute dose of gamma irradiation were determined for populations of Callosobruchus maculatus treated with substerilizing doses of irradiation each generation for 30 generations. Reproductive capacity was decreased by an ancestral history of irradiation, the reduction being positively correlated with both the size of dose per generation and the number of ancestral generations treated. Irradiation of the selected populations with an acute dose revealed no increase in tolerance, even after 30 generations. In general, the greater the amount of accumulated ancestral exposure to irradiation, the greater the sensitivity to further irradiation. The ability to develop a tolerance to ionizing irradiation may not be a general phenomenon in insects. (auth)
- Research Organization:
- Dept. of Agriculture, Savannah
- Sponsoring Organization:
- USDOE
- NSA Number:
- NSA-29-027114
- OSTI ID:
- 4309236
- Journal Information:
- Ann. Entomol. Soc. Amer., v. 67, no. 2, pp. 287-291, Other Information: Orig. Receipt Date: 30-JUN-74
- Country of Publication:
- Country unknown/Code not available
- Language:
- English
Similar Records
Variation in metal tolerance associated with population exposure history in Southern toads (Anaxyrus terrestris)
Adaptation to fluoranthene exposure in a laboratory population of fathead minnows