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Authors
Affiliations
1 Department of Zoology, Gangadhar Meher College, Sambalpur 768 004, Orissa, IN
2 Department of Entomology, College of agriculture, OUTA, Bhubneswar 751 003, Orissa, IN
Source
Journal of Biological Control, Vol 13, No 1&2 (1999), Pagination: 39-43
Abstract
The biology and feeding potential of Coccinella septempunctata Linnaeus were studied in the laboratory at 27±2°C and 70±5 per cent relative humidity on Macrosiphoniella sanborni (Gillette), a common pest of chrysanthemum. The egg, larval, prepupal and pupal stages occupied 2.41±0.19, 9.35±1.2, 0.73±0.1 and 3.53±0.08 days, respectively. The adult female laid 330.8±28.3 eggs in groups of 30 to 60. The sex ratio (female:male) was 1.5:1. The adult longevity was 10-19 days in male and 26-35 days in female. The feeding potential of first, second, third and fourth instar grubs and adult was 9.17±1.5, 20.8±3.3, 34.1±3.5, 37.5±4.7 and 55.3±6.7 aphids/day/individual, respectively.
Keywords
Biology, Coccinella septempunctata, Feeding Potential, Macrosiphoniella sanborni.
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