Advertisement

Researches on Population Ecology

, Volume 20, Issue 2, pp 297–314 | Cite as

Studies on the population dynamics of a thistle-feeding lady beetle,Henosepilachna pustulosa (Kôno) in a cool temperature climax forest

I. The estimation of adult population parameters by the marking, release and recapture method
  • Koji Nakamura
  • Takayuki Ohgushi
Article

Summary

  1. 1.

    A field study was carried out on the population dynamics of a thistle-feeding lady beetle,Henosepilachna pustulosa (Kôno) living in a cool temperature climax forest in northern Kyoto Prefecture, central Japan.

     
  2. 2.

    Intensive marking, release and recapture program was carried out to estimate the adult population parameters by usingJolly-Seber method.

     
  3. 3.

    Sampling ratio was around 50%. Marking ratio rapidly rised as the census progressed and approached to 100%.

     
  4. 4.

    Sex ratio (% ♀) was 63–69% in both overwintered and new adults.

     
  5. 5.

    Daily survival rate was as high as 0.95 or more and constant throughout the season. Adult longevity in the spring was longer than 40 days.

     
  6. 6.

    Reproductive rate i. e., the ratio of the number of newly emerged adults in a given generation to that of overwintered adults in the preceding generation, is very small, ranging 1–3, whereas winter survival is higher than 50%, consequently the size of populations in the study area remain in a remarkably constant size and it never reached a level where intraspesific competition occurred.

     
  7. 7.

    The population characteristics ofH. pustulosa are compared with those of the two closely related species,H. vigintioctopunctata andH. vigintioctomaculata, which are the pests ofSolanaceous crops.Hp is moreK-strategic than the two pest species.

     

Keywords

Reproductive Rate Winter Survival Adult Beetle Adult Longevity Lady Beetle 
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.

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. Clark, L. R., P. W. Geier, R. D. Hughes andR. F. Morris (1967)The ecology of insect populations in theory and practice. Methuen, London.Google Scholar
  2. Iwao, S. (1971) Dynamics of numbers of a phytophagous lady-beetle,Epilachna vigintioctomaculata, living in patchily distributed habitats.Proc. Adv. Study Inst. Dynamics Numbers Popul. (Oosterbeek, 1970) 129–147.Google Scholar
  3. Jolly, G. M. (1965) Explicit estimates from capture-recapture data with both death and immigration —stochastic model.Biometrika 52: 225–247.PubMedCrossRefGoogle Scholar
  4. Katakura, H. (1974a) Variation analysis of elytral maculation inHenosepilachna vigintioctomaculata complex (Coleoptera, Coccinellidae).Jour. Fac. Sci. Hokkaido Univ. Ser. VI, Zool. 19: 445–455.Google Scholar
  5. Katakura, H. (1974b) Morphology and distribution of the forms ofHenosepilachna vigintioctomaculata complex in Hokkaido.Jour. Fac. Sci. Hokkaido Univ. Ser. VI, Zool. 19: 657–680.Google Scholar
  6. Nakamura, K. (1976a) Studies on the population dynamics of the 28-spotted lady beetle,Henosepilachna vigintioctopunctata F. I. Analysis of life tables and mortality process in the field population.Jap. J. Ecol. 26: 49–59. (In Japanese)Google Scholar
  7. Nakamura, K. (1976b) Ditto. II. Analysis of regulatory system under semi-natural and laboratory conditions.Jap. J. Ecol. 26: 125–134. (in Japanese)Google Scholar
  8. Seber, G. A. F. (1973)The estimation of animal abundance and related parameters. Griffin, London.Google Scholar
  9. Southwood, T. R. E., R. M. May, M. P. Hassell andG. R. Conway (1974) Ecological strategies and population parameters.Amer. Natur. 108: 791–804.CrossRefGoogle Scholar
  10. Southwood, T. R. E. (1975) The dynamics of insect populations.Insects, Science and Society (Ed. byD. Pimentel), pp. 151–199. Academic Press, New York.Google Scholar
  11. Wilson, F. (1968) Insect abundancer prospect.Symp. Roy. Entomol. Soc. Lond. 4: 143–158.Google Scholar

Copyright information

© The Society of Population Ecology 1979

Authors and Affiliations

  • Koji Nakamura
    • 1
  • Takayuki Ohgushi
    • 2
  1. 1.Ecological Laboratory, Faculty of ScienceKanazawa UniversityKanazawaJapan
  2. 2.Entomological Laboratory, College of AgricultureKyoto UniversityKyotoJapan

Personalised recommendations