A REVIEW OF INSECT SURVIVAL IN FROZEN SOILS WITH PARTICULAR REFERENCETO SOIL-DWELLING STAGES OF CORN ROOTWORMS

Citation
Mm. Ellsbury et al., A REVIEW OF INSECT SURVIVAL IN FROZEN SOILS WITH PARTICULAR REFERENCETO SOIL-DWELLING STAGES OF CORN ROOTWORMS, Cold regions science and technology, 27(1), 1998, pp. 49-56
Citations number
49
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Geosciences, Interdisciplinary",Engineering,"Environmental Sciences
ISSN journal
0165-232X
Volume
27
Issue
1
Year of publication
1998
Pages
49 - 56
Database
ISI
SICI code
0165-232X(1998)27:1<49:AROISI>2.0.ZU;2-Q
Abstract
Survival mechanisms of insects that may be subjected to freeze-thaw pr ocesses in cold climates are reviewed with particular reference to soi l-dwelling stages of corn rootworms. Diapause in corn rootworms is dis cussed in relation to their origin from tropical regions and adaptatio n for survival in colder climates. Cold-hardiness in insects is review ed and discussed in relation to existing knowledge about cold-hardines s in corn rootworms during postdiapause development. Current knowledge of soil temperature effects on corn rootworm overwinter egg survival is summarized. Overwinter mortality to eggs of corn rootworms from the effects of subfreezing soil temperature varies with depth of egg plac ement, which varies within the top 30 cm of the soil profile in respon se to availability of soil moisture and presence of drought cracks as oviposition sites. Implications of spatial variability in corn rootwor m populations for research on corn rootworm management are discussed i n relation to spatially variable environmental factors. (C) 1998 Elsev ier Science B.V.