Researches on Population Ecology

, Volume 19, Issue 1, pp 69–86 | Cite as

Seasonal change of nest survival and related aspects in an aggregation ofLasioglossum duplex (Dalla torre), a eusocial halictine bee (Hymenoptera: Halictidae)

  • Shôichi F. Sakagami


Nest survival in an aggregation of a eusocial halictine bee,Lasioglossum duplex, was censused through an annual cycle. Out of 2,500 nests marked at the beginning of solitary phase in the spring, only 25.5% attained eusocial phase. But 60.5% of 636 nests attaining eusocial phase successfully produced sexual offspring. This shows that solitary phase is the most vulnerable period in the annual cycle.

A very low productivity in eusocial phase in the census year was clarified from examination of 99 nests in the autumn. The number of prospective foundresses surviving to the next year was estimated upon the number of brood cells in examined nests and of old females surviving these nests. Deviation between this estimate and the number of nests made in the next spring was 8.8%, confirming a drop of population size to less than one third in the next year. Some nests solitarily made in the summer by dispersed females were examined. Productivity in such nests was extremely low, hence these nests should contribute virtually nothing to the next generation.

Possible factors affecting the low productivity in eusocial phase were enumerated though none of these were supported by concrete evidence. Some considerations were given on the relation between obtained results and colony life cycle in eusocial insects, particularly in halictine bees.


Brood Cell Nest Survival Inactive Phase Census Area Nest Foundation 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.


  1. Batra, S.W.T. (1966) The life cycle and behavior of the primitively social bee,Lasioglossum zephyrum (Halictidae).Kansas Univ. Sci. Bull. 46: 359–422.Google Scholar
  2. Brian, M.V. (1965)Social insect populations. Academic Press, London. vii+135 pp.Google Scholar
  3. Knerer, G. etC. Plateaux-Quénu (1967) Sur la production continue ou périodique de couvain chez les Halictinae (Insectes Hyménoptères).C.R. Acad. Sci. Paris 264: 651–653.Google Scholar
  4. Lin, N. andC.D. Michener (1972) Evolution of sociality in insects.Quart. Rev. Biol.,47: 131–159.CrossRefGoogle Scholar
  5. Matsuura, M. (1977) “Life ofPolistes wasps.”Shizen No. 371: 26–36 (In Japanese).Google Scholar
  6. Michener, C.D. andA. Wille (1961) The bionomics of a primitively social bee,Lasioglossum inconspicuum.Univ. Kansas Sci. Bull. 42: 1123–1202.Google Scholar
  7. Richards, K.W. (1975) Population ecology of bumblebees in southern Alberta. Dissertation thesis, 117 pp. Univ. Kansas, Lawrence.Google Scholar
  8. Sakagami, Sh. F. (1974) Sozialstruktur und Polymorphismus bei Furchen- und Schmalbienen (Halictinae). In G. H. Schmidts “Sozialpolymorphismus bei Insekten. Probleme der Kastenbildung im Tierreich, xxiv+974 SS. Wiss. Verlagsgesellsch., Stuttgart” 257–293.Google Scholar
  9. Sakagami, Sh.F. andH. Fukuda (1972) Life of a Japanese eusocial halictine bee,Lasioglossum duplex, out of brood rearing season (Hymenoptera, Halictidae).Insectes Sociaux 19: 137–152.CrossRefGoogle Scholar
  10. Sakagami, Sh.F. andK. Hayashida (1958) Biology of the primitive social bee,Halictus duplex Dalla Torre. I. Preliminary report on the general life history.Annot. Zool. Jap.,31: 151–155.Google Scholar
  11. Sakagami, Sh.F. andK. Hayashida (1960) Biology of the primitive social bee,Halictus duplex Dalla Torre. II. Nest structure and immature stages.Insectes Sociaux 7: 57–98.CrossRefGoogle Scholar
  12. Sakagami, Sh.F. andK. Hayashida (1961) Biology of the primitive social bee,Halictus duplex Dalla Torre. III. Activities in spring solitary phase.J. Fac. Sci., Hokkaido Univ. Ser. VI. Zool. 14: 639–682.Google Scholar
  13. Sakagami, Sh.F. andK. Hayashida (1968) Bionomics and sociology of the summer matrifilial phase in the social halictine bee,Lasioglossum duplex.J. Fac. Sci., Hokkaido Univ. Ser. VI. Zool. 16: 413–513.Google Scholar
  14. West Eberhard, M.J. (1976) The evolution of social behavior by kin selection.Quart. Rev. Biol. 50: 1–33.CrossRefGoogle Scholar
  15. Wilson, E.O. (1971)The insect societies. xii+548 pp. Harvard Univ. Press, Cambridge, Mass.Google Scholar
  16. Yamane, S. andT. Kawamichi (1975) Bionomic comparison ofPolistes (Hymenoptera, Vespidae) at two different localities in Hokkaido, with reference to its probable adaptation to cold climate.Kontyû 43: 214–232.Google Scholar

Copyright information

© The Society of Population Ecology 1977

Authors and Affiliations

  • Shôichi F. Sakagami
    • 1
  1. 1.Zoological Institute, Faculty of ScienceHokkaido UniversitySapporoJapan

Personalised recommendations