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THE RELATIONSHIP BETWEEN LATITUDE AND THE EMERGENCE OF ALFALFA LEAFCUTTER BEES, MEGACHILE ROTUNDATA (HYMENOPTERA: MEGACHILIDAE)1

Published online by Cambridge University Press:  31 May 2012

P. Pankiw ,
J. A. C. Lieverse  and
B. Siemens
P. Pankiw
Affiliation:
Research Station, Canada Agriculture, Beaverlodge, Alberta T0H 0C0
J. A. C. Lieverse
Affiliation:
Research Station, Canada Agriculture, Beaverlodge, Alberta T0H 0C0
B. Siemens
Affiliation:
Experimental Farm, Canada Agriculture, Fort Vermilion, Alberta T0H 1N0
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Abstract

Studies in Western Canada from 1974 to 1977 on variations in time and duration of the emergence period after diapause of leafcutter bees, Megachile rotundata (Fabricius), reared at latitudes ranging from 49°N to 58°N showed that bees reared at northern latitudes emerged sooner and the duration of the emergence period was shorter than for bees from the southern latitude. When southern bees were reared in the north, their emergence pattern was similar to the northern strain. However, the change of time to emerge and duration of emergence period of northern strains reared in the south was less pronounced. Number of days to emerge varied inversely with length of cold treatment at 4 °C with greater variance in southern strains.

Type
Articles
Information
The Canadian Entomologist , Volume 112 , Issue 6 , 01 June 1980 , pp. 555 - 558
Copyright
Copyright © Entomological Society of Canada 1980

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References

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