tailieunhanh - Biology and predatory potential of Coccinella septempunctata Linn. on aphis craccivora under controlled condition
Biology and feeding potential of Coccinella septempunctata was studied in the laboratory condition during 2013 in different months pertaining to different temperature regimes on Cowpea aphid, Aphis craccivora. During the cooler months of January and November, the life stages are prolonged and in the warmer months of March and May the life stages are shorter for the coccinellid. In January, when the mean temperature was , the total developmental period from egg to adult stage, took ± days whereas, in May, at , the total developmental periods was ±, again when temperature increased in September, the total developmental periods increased to ± days. Similar trends were observed in fecundity and egg viability. During the larval stage, the beetle consumed aphids whereas, the male and female consumed and aphids respectively. | Biology and predatory potential of Coccinella septempunctata Linn. on aphis craccivora under controlled condition
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