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New regression formula to estimate the whole population for recapture-addicted small mammals

  • Published:
Researches on Population Ecology

Summary

We have devised a census formula of curvilinear regression suitable for capture-recapture data of recapture-addicted populations of the Japanese field vole (Microtus montebelli) obtained under a grid-plan with single-catch traps in order to estimate the whole population. The equation is founded on the assumption that the trappable population on the initial day is increased in way of an exponential curve until it reaches to the whole during one trapping period. The effect of trap-preoccupation by marked and multiple collisions is considered in the formula. As a result of its application to field data of the vole, it has turned out that the equation is required for the data gained under the trapping plan with trap spacing 10m, but not for those under the plan with spacing 5m, to estimate the whole. A convenient method of analysis of the formula is offered here, but we have been yet unable to introduce assymptotic variance of estimates.

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Authors and Affiliations

  1. Zoological Laboratory, Kochi Women's University, Kochi, Japan

    Ryo Tanaka

  2. Sugadaira Biological Laboratory, Tokyo Kyoiku University Sugadaira, Sanada-machi, Chiisagata-gun, Nagano Pref., Japan

    Masaomi Kanamori

Authors
  1. Ryo Tanaka
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  2. Masaomi Kanamori
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Additional information

Contributions from JIBP-PT No. 19, carried out by the grant from the expenditure of Education Department to the specific study on “Dynamics of Biosphere”.

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Tanaka, R., Kanamori, M. New regression formula to estimate the whole population for recapture-addicted small mammals. Res Popul Ecol 9, 83–94 (1967). https://doi.org/10.1007/BF02514916

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  • DOI: https://doi.org/10.1007/BF02514916

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