AGRIS

Data provider:

Icon data provider

DOAJ is a community-curated online directory that indexes and provides access to high quality, open access, peer-reviewed journals.

Active (Data provider submitted metadata in the last calendar year)
Journal Article

Journal Article

Winter climates and coldhardiness in terrestrial insects  [2005]

William J. TURNOCK; Paul G. FIELDS;

Access the full text

Overwintering insects must avoid injury and death from the freezing of tissues and from metabolic disruptions associated with exposure to low, non-freezing temperatures. The winter climates of the world are classified in relation to insect overwintering on the basis of their minimum temperatures and the duration of the winter (when temperatures are below the thermal range for activity and development). Outside the Tropical Wet zone, the severity of exposure to cold (temperature, snowfall, duration of exposure, predictability, variability) can vary from a few days at 0°C to months below -20°C with extremes as low as -60°C. The severity of the temperature exposure may be ameliorated by the selection by insects of overwintering sites (exposed, partly-exposed, protected). The relationships among overwintering habitats, the minimum winter temperature in climatic zones, and the supercooling points (SCP) of over 350 terrestrial insects from published reports were examined. Variability in the SCP among insects within each climatic zone and habitat was wide. Among the freeze-susceptible species that overwintered in exposed or partly-protected habitats the SCP and the cold severity of climate were correlated. This was not the case for insects that overwintered in protected habitats. The SCP's of freeze-tolerant insects were generally higher than the freeze-susceptible insects, and the SCP's were not tightly linked with the cold severity of climatic zone. Insects, bo
th freeze-susceptible and freeze-tolerant, overwintering in exposed habitats had lower SCP's than insects from habitats that offered some protection from ambient temperatures. Thirty-eight species had reports of SCP's for different geographical locations. Although there were occasionally differences in the SCP's, there was no consistent pattern of insects having lower SCP's when overwintering in colder habitats. The incidence of freeze-tolerance was higher in boreal and polar climatic zones than in climatic zones with warmer winters. Holometabola insects had a higher incidence of freeze-tolerance than hemimetabola insects. Suggestions for future research directions are outlined.

Bibliographic information

Language:
English
Type:
Journal Article
In AGRIS since:
2022
Publisher:
Institute of Entomology, Biology Centre, Czech Academy of Science
All titles:
"Winter climates and coldhardiness in terrestrial insects"@eng
Other:
"European Journal of Entomology, Vol 102, Iss 4, Pp 561-576 (2005)"
Loading...

Bibliographic information

Language:
English
Type:
Journal Article
In AGRIS since:
2022
Publisher:
Institute of Entomology, Biology Centre, Czech Academy of Science
All titles:
"Winter climates and coldhardiness in terrestrial insects"@eng
Other:
"European Journal of Entomology, Vol 102, Iss 4, Pp 561-576 (2005)"