Effects of Low Temperature Acclimation on Developmental Stages of Stored-product Insects1
作者:
Menter H. David,
Robert B. Mills,
Gailen D. White,
期刊:
Environmental Entomology
(OUP Available online 1977)
卷期:
Volume 6,
issue 1
页码: 181-184
ISSN:0046-225X
年代: 1977
DOI:10.1093/ee/6.1.181
出版商: Oxford University Press
数据来源: OUP
摘要:
We studied low temperature acclimation by 4 immature age groups (21–24, 14–17, 7–10 or 0–3 days after oviposition), by adults from laboratory-cultured strains, and by a field strain of each of 3 species:Sitophilus oryzae(L.), rice weevil;Sitophilus granarius(L.), granary weevil; andRhyzopertha dominica(F.), lesser grain borer. Insects were acclimated for 3 days at 21.1, 7 days at 15.5 and 7 days at 10.0°C, then placed in 4.4°C 2, 4, or 6 weeks. Non-acclimated samples were placed directly in 4.4°C.Prior acclimation increased survival of all insects at 4.4°C. The most cold-tolerant rice weevils and granary weevils were those of 14–17 days development, and most tolerant lesser grain borers, of 21–24 days. More granary weevil adults from the field strain than from the laboratory strain survived. Granary weevil adults (field or lab) were more cold-tolerant than adults of the other 2 species. The least cold-tolerant stages of all species were 0–3 days development (eggs).
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