“Defense by many individuals with large nests” is merely one kind of social behavior. Taken together with several other social behaviors, such as feces manipulation and cooperative nest building, four species of Stigmaeopsis have been determined to have highly developed communal sociality. This is the first described example of sociality in mites, which may have the simplest neural systems of any social organisms. The author expands his discussion to include the background of such evolution and suggests the importance of kin selection. Furthermore, known buds of mite sociality are reviewed and several fascinating examples are introduced.
KeywordsSpider Mite Mite Species Evolutionary Stable Strategy Phytoseiid Mite Local Mate Competition
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