Cyclicity and some characteristics of mass reproduction ofCalliptamus italicus L. in Southern Russia |
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Authors: | M V Stolyarov |
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Institution: | (1) All-Russian Research Institute of Plant Biological Protection, Russian Academy of Agricultural Sciences, 350039 Krasnodar, Russia |
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Abstract: | Analysis of the reproductive dynamics ofCalliptamus italicus during the past 100 years confirmed the dependence of locust invasions on the 11-year cycles of solar activity, which was
previously known for other gregarious locusts. Over a considerable part of the species range, the onset of mass reproduction
is promoted by a hot and droughty spring and summer. The scale of the outbreak is determined by local conditions in the foci
of reproduction. The current global warming is characterized by an unstable, drastically varying climate with a trend toward
aridity in many regions. If this trend persists for several decades, we may expect an increase in the periods ofC. talicus mass reproduction and in the persistency and extent of damage inflicted by locusts on vast Palearctic areas. |
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Keywords: | locusts reproduction sun cyclicity drought |
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