First instar nymphs of Monellia caryella (Fitch), Monelliopsis pecanis Bissell, and Melanocallis caryaefoliae (Davis), were exposed to temperatures of 25, 30, 35, and 40° C for up to 9 days. Test aphids were observed for growth, maturity, natality and mortality at each temperature. For three species mortality was low at 25° C but development was slowed; at 30° C mortality increased slightly but development and natality was optimum; at 35° C mortality was greatly increased and maturity was not attained; at 40° C first instar aphids did not survive beyond one day. In further testing with hourly observations at 40° C, M. caryella had 100% mortality after 6 h-exposure, M. pecanis had 100% mortality after 9 h, and M. caryaefoliae survived for 11 h and was the most tolerant of 40° C.
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1 April 1992
Research Article|
April 01 1992
The Effect of Temperature on Survival and Development of First Instar Monellia caryella, Monelliopsis pecanis, and Melanocallis caryaefoliae (Homoptera: Aphididae)
W. L. Tedders;
W. L. Tedders
Southeastern Fruit and Tree Nut Research Laboratory, USDA-ARS, Byron, GA 31008
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C. C. Reilly;
C. C. Reilly
Southeastern Fruit and Tree Nut Research Laboratory, USDA-ARS, Byron, GA 31008
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B. W. Wood
B. W. Wood
Southeastern Fruit and Tree Nut Research Laboratory, USDA-ARS, Byron, GA 31008
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Journal of Entomological Science (1992) 27 (2): 135–142.
Article history
Accepted:
February 05 1992
Citation
W. L. Tedders, C. C. Reilly, B. W. Wood; The Effect of Temperature on Survival and Development of First Instar Monellia caryella, Monelliopsis pecanis, and Melanocallis caryaefoliae (Homoptera: Aphididae). Journal of Entomological Science 1 April 1992; 27 (2): 135–142. doi: https://doi.org/10.18474/0749-8004-27.2.135
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