COMPARISON BETWEEN LIMIT 'STORAGE OF EGGS AND PUPAE OF THREE COCCINElLiD SPECIESI UNDER lOW TEMPERATURE | ||||
| Journal of Plant Protection and Pathology | ||||
| Article 18, Volume 28, Issue 3, March 2003, Page 2399-2405 PDF (811.21 K) | ||||
| Document Type: Original Article | ||||
| DOI: 10.21608/jppp.2003.243281 | ||||
 View on SCiNiTO | ||||
| Author | ||||
| Laila A. EI·Batran, | ||||
| Economic Entomology Dept., • Faculty of Agric., Mansoura University | ||||
| Abstract | ||||
| Eggs and pupae 01 the Coccinel/a septempunctala L., Coccine/la undecimpunclata l. and Chi/acarus bip < /em>uslu/afus L. can be stored al 8°C .. below their zero of development. for several days. In general, viability of both stages decreased by increasing the storage period. For eggs, the maximum or storage period. for the three species, was detected after 3 days (71-83%) and decreased gradually to reach (1-9%) after 15 days. For pupae, viability was 100 % up to 6 days and decreased to (71-75%) after 27 days and reached (1.6-2.Y%) after 39 day of storage, The relationship between number of living eggs and pupae with time obey the sigmoid Saltzman equation. | ||||
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