Developmental Threshold Temperature and Effective Accumulated Temperaturefor Sweetpotato Weevil (Cylas formicarius)

doi:10.11924/j.issn.1000-6850.casb15120158

Chinese Agricultural Science Bulletin ›› 2016, Vol. 32 ›› Issue (20): 35-39.doi: 10.11924/j.issn.1000-6850.casb15120158

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Developmental Threshold Temperature and Effective Accumulated Temperaturefor Sweetpotato Weevil (Cylas formicarius)

Wang Rongyan, Ma Juan, Li Xiuhua, Gao Bo, Chen Shulong

(Institute of Plant Protection, Hebei Academy of Agricultural and Forestry Sciences/Integrated Pest Management Centre of Hebei Province/Key Laboratory of Integrated Pest Management on Crops in Northern Region of North China, Ministry of Agriculture, Baoding Hebei 071000)

Received:2015-12-29 Revised:2016-06-24 Accepted:2016-01-25 Online:2016-07-15 Published:2016-07-15

Abstract

Abstract: To determine its developmental threshold temperature and effective accumulated temperature, sweetpotato weevil (Cylas formicarius) were reared with sweetpotato root in the illumination incubator at 20, 23, 25, 28 and 31℃, under 60% RH and 12 h photophase. The results showed that the sweetpotato weevil could grow normally and complete one generation in 79.75, 57.01, 43.36, 33.10 and 31.90 d at 20, 23, 25, 28 and 31℃ respectively. The developmental threshold temperature of egg, larva, pupa, adult in pre-oviposition period and one generation was estimated to be 11.44, 12.37, 14.42, 17.44 and 13.58℃, respectively, and the effective accumulated temperature for their development was 118.07, 233.42, 78.41, 72.87 and 515.77 day degree, respectively.

CLC Number:

S433.5

Wang Rongyan,Ma Juan,Li Xiuhua,Gao Bo and Chen Shulong. Developmental Threshold Temperature and Effective Accumulated Temperaturefor Sweetpotato Weevil (Cylas formicarius)[J]. Chinese Agricultural Science Bulletin, 2016, 32(20): 35-39.

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Developmental Threshold Temperature and Effective Accumulated Temperaturefor Sweetpotato Weevil (Cylas formicarius)

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