ISSN:
1432-0703
Source:
Springer Online Journal Archives 1860-2000
Topics:
Energy, Environment Protection, Nuclear Power Engineering
,
Medicine
Notes:
Abstract The effects of carbaryl (1-naphthalenyl methylcarbamate), an extensively used insecticide in agricultural operations, have been studied on survival, growth, and metamorphosis of the bullfrog tadpoleRana tigrina. The 96 hr LC50 value for tadpoles (0.02 g) was 6.2 mg/L. The tadpoles were reared from hatching to metamorphosis in sublethal concentrations of carbaryl. Rates of feeding, defecation, and excretion increased with increasing concentration of carbaryl but the conversion rate decreased leading to the production of small froglets. The tadpoles exposed to the sublethal concentrations suffered no mortality until the appearance of the forelimb; however, during metamorphosis mortality was significant, even at 2 mg/L.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF01059402
