Spruce Beetle 1 Winter Mortality Resulting from Record Low Temperatures in Arizona
- 1 October 1974
- journal article
- Published by Oxford University Press (OUP) in Environmental Entomology
- Vol. 3 (5) , 752-754
- https://doi.org/10.1093/ee/3.5.752
Abstract
During the week of January 1, 1971, a cold period with a record low temperature of −40°C (−40°F) occurred near an area supporting high spruce beetle populations on the Fort Apache Indian Reservation, Arizona. This resulted in 88% spruce beetle larval mortality above the snow level in sampled standing trees. Below the snow level, mortality of larvae and hibernating adults was 15 and 28%, respectively. Parasites, predators, and other associated species incurred lower mortality.Keywords
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