Hostname: page-component-cd9895bd7-gvvz8 Total loading time: 0 Render date: 2024-12-27T07:13:03.605Z Has data issue: false hasContentIssue false
  • English
  • Français

THRESHOLD TEMPERATURES FOR THE EUROPEAN RED MITE, PANONYCHUS ULMI (ACARINA: TETRANYCHIDAE)1

Published online by Cambridge University Press:  31 May 2012

Wm. L. Putman
Wm. L. Putman
Affiliation:
Research Station, Canada Department of Agriculture, Vineland Station, Ontario
Get access Rights & Permissions [Opens in a new window]

Abstract

Some individual processes, e.g., moulting, in the development of Panonychus ulmi (Koch) can proceed at temperatures as low as 7.2 °C but not at 6.3 °C. the threshold for complete postovarial development lies between 9.2° and 11.7 °C. The threshold for deposition of viable eggs is between 10.7° and 11.7 °C, though some females eclosing at 7.2 °C lay inviable eggs at 9.8 °C. Experimental values obtained in the determination of threshold temperatures can be expressed as two temperatures: the permissive, the lowest experimental temperature allowing a particular process to proceed; and the inhibitive, the highest experimental temperature (below the permissive) preventing completion of the process. The actual threshold lies between these temperatures.

Type
Articles
Information
The Canadian Entomologist , Volume 102 , Issue 4 , April 1970 , pp. 421 - 425
Copyright
Copyright © Entomological Society of Canada 1970

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

Beament, J. W. L. 1951. The structure and formation of the egg of the fruit tree red spider mite, Metatetranychus ulmi Koch. Ann. appl. Biol. 38: 1–24.CrossRefGoogle Scholar
Hodson, A. C., and Rawy, M. A. Al. 1958. Temperature in relation to developmental thresholds of insects. Proc. 10th int. Congr. Ent., Montreal (1956). Vol. 2, pp. 61–65.Google Scholar
Johnson, G. G. 1940. Development, hatching and mortality of the eggs of Cimex lectularius L. (Hemiptera) in relation to climate, with observations on the effects of preconditioning to temperature. Parasitology 32: 127–173.CrossRefGoogle Scholar
Lees, A. D. 1953. Environmental factors controlling the evocation and termination of diapause in the fruit tree red spider mite Metatetranychus ulmi Koch (Acarina: Tetranychidae). Ann. appl. Biol. 40: 449–486.CrossRefGoogle Scholar
Lin, S., Hodson, A. C., and Richards, A. G.. 1954. An analysis of threshold temperatures for the development of Oncopeltus and Tribolium eggs. Physiol. Zool. 27: 287–311.CrossRefGoogle Scholar
Messenger, P. S., and Flitters, N. E.. 1940. Effect of constant temprature environments on the egg stage of rhree species of Hawaiian fruit flies. Ann. ent. Soc. Am. 51: 109–119.CrossRefGoogle Scholar
Mori, H. 1957. The influence of temperature and relative humidity upon the development of the eggs of fruit tree red spider mite Metatetranychus ulmi (Koch) (Acarina: Tetranychidae). J. Fac. Agric. Hokkaido (imp.) Univ. 50: 363–370.Google Scholar
Parent, B. 1965. Influence de la température sur la développement embryonnaire et post-embryonnaire du tétranyque rouge du pommier. Panonychus ulmi (Koch) (Acariens: Tetranychidae). Ann. Soc. ent. Qué. 10: 3–10.Google Scholar
Richards, A. G. 1957. Cumulative effects of optimum and suboptimum temperatures on insect development, pp. 145–162. In Johnson, F. H. (ed.), Influence of temperature on biological systems. Am. Physiol. Soc., Washington.Google Scholar