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Insectes Sociaux

, Volume 48, Issue 3, pp 259–265 | Cite as

Colony productivity of the paper wasp Polistes snelleni: Comparison between cool-temperate and warm-temperate populations

  • K. Inagawa
  • J. Kojima
  • K. Sayama
  • K. Tsuchida

Summary:

Production characteristics, including colony productivity, labor efficiency and sex ratio, in the paper wasp Polistes snelleni were compared between cool-temperate (Hokkaido, northern Japan) and warm-temperate (Nagano and Kanto, central Japan) populations, based on examination of old nests. The production schedule of P. snelleni was protandrous. Numbers of workers, males and gynes produced per colony were all larger in the warm-temperate populations. The numbers of reproductives (males plus gynes) per worker were generally greater in cool-temperate than in warm-temperate colonies, although some extraordinarily large warm-temperate nests had very high gynes/worker ratios. The number of males was not significantly correlated with the number of workers in either cool-temperate or warm-temperate populations. Differences in the production characteristics between populations are discussed in terms of climatic conditions, a major factor in differences in the length of the nesting period. The production of reproductives in very large warm-temperate nests is discussed in relation to worker reproduction.

Key words: Paper wasps, Polistes, colony productivity, climatic conditions, old nests. 

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Copyright information

© Birkhäuser Verlag, 2001

Authors and Affiliations

  • K. Inagawa
    • 1
  • J. Kojima
    • 1
  • K. Sayama
    • 2
  • K. Tsuchida
    • 3
  1. 1.Natural History Laboratory, Faculty of Science, Ibaraki University, Mito, 310-8512 Japan, e-mail: jkrte@mito.ipc.ibaraki.ac.jp JP
  2. 2.Hokkaido Research Center, Forestry and Forest Products Research Institute, Hitsujigaoka, Sapporo, 062-8516 Japan JP
  3. 3.Laboratory of Entomology, Faculty of Agriculture, Gifu University, Gifu, 501-1193 Japan JP

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