We studied the correlation between male-male aggressive behavior of the spider mite, Schizotetranychus miscanthi and winter coldness, a factor hypothesized to correlate with the degree of relatedness of the interacting males through the frequent occurrence of mother-son mating in the spring. Thirty-one samples from various populations throughout Japan were added to previous data. A cluster analysis revealed two clinal trends for male-male aggression in S. miscanthi in regions of light or no snowfall. The two clines may represent a dimorphism within the species, each having a similar clinal trend within Japan. Further support for the hypothesis that male overwintering survival affects male-male aggressiveness came from a comparison between regions of heavy snowfall and those of light or no snowfall. In regions with heavy snow insulation, overwintering survival may not be as high as in other areas, and there was no correlation between male aggressiveness and the minimum winter temperature. However, there was a significant correlation in regions of light snow.
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Similar content being viewed by others Explore related subjectsDiscover the latest articles and news from researchers in related subjects, suggested using machine learning. Author information Authors and AffiliationsHokkaido University, Kita-ku, Sapporo 060-8589, Japan Tel./Fax: +81-11-7063893 e-mail: yutsat@res.agr.hokudai.ac.jp, , , , , , JP
Yutaka Saito
Laboratory of Applied Molecular Entomology Faculty of Agriculture, Hokkaido University Kita-ku, Sapporo 060-8589, Japan, , , , , , JP
Ken Sahara
Received: 26 May 1998 / Received in revised form: 16 December 1998 / Accepted: 30 December 1998
About this article Cite this articleSaito, Y., Sahara, K. Two clinal trends in male-male aggressiveness in a subsocial spider mite (Schizotetranychus miscanthi). Behav Ecol Sociobiol 46, 25–29 (1999). https://doi.org/10.1007/s002650050588
Issue Date: June 1999
DOI: https://doi.org/10.1007/s002650050588
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