, Volume 89, Issue 2, pp 127-136
Date: 02 May 2009

New aspects in investigations of diapause and non-diapause dormancy types in insects and other arthropods

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Abstract

The paper resumes consideration of the problem posed by the Russian ecologist A.M. Emme (1953) on the need for a comparative study of diapause and quiescence (a non-diapause type of dormancy) in insects and other arthropods. The problem has recently become important due to the scarcity of eco-physiological studies of non-diapause dormancy, whose role in life cycle regulation remains unclear, and to the fact that most attention is now paid to diapause (as the leading adaptation in the control of seasonal development of arthropods). Analysis of data available for insects and acariform mites revealed the prospects of a comprehensive study of non-diapause forms of dormancy known presently (the common stage-independent quiescence, modified stage-specific quiescence, and post-diapause quiescence). The combination of post-diapause quiescence and diapause proper, revealed in many recent insects and acariform mites (mainly Prostigmata), may correspond to the initial ancestral state of dormancy in arthropods, representing a universal adaptation to both predictable and unpredictable environmental changes. This hypothesis gives a reasonable explanation of the possible dual nature of winter dormancy in oribatid mites (in contrast to the existing contradictory interpretations of their hibernal dormancy as only quiescence or only diapause).

Original Russian Text © V.N. Belozerov, 2009, published in Entomologicheskoe Obozrenie, 2009, Vol. 88, No. 1, pp. 3–15.