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Population dynamics of the japanese clouded apollo Parnassius glacialis butler (Lepidoptera: Papilionidae). I. changes in population size and related population parameters for three successive generations
Author(s) -
Matsumoto Kazuma
Publication year - 1985
Publication title -
population ecology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.819
H-Index - 59
eISSN - 1438-390X
pISSN - 1438-3896
DOI - 10.1007/bf02515468
Subject(s) - biology , voltinism , lepidoptera genitalia , sex ratio , population , longevity , mark and recapture , demography , butterfly , zoology , ecology , larva , genetics , sociology
Summary Population dynamics of a univoltine butterfly Parnassius glacialis (Lepidoptera: Papilionidae) was studied with mark‐recapture methods for three successive generations in a hilly region in Kanazawa City, Ishikawa Prefecture, Japan in 1981–1983. Jolly (1965) and Seber's (1973) method was applied to the mark‐recapture data to estimate population parameters (daily survival rate, longevity, population size, sex ratio, etc.). Sampling ratios were at least 50% and 30% for males and females, respectively. Mean daily survival rate for males ranged 0.81–0.86 and that for females 0.80–0.84. Mean longevity was about 4–7 days for the males and about 5 days for the females. Spiders killed more males than females. Maximum longevity for an individual recorded during the study was 31 days for males and 18 days for females. Emergence of the butterflies was later and less synchronous in 1981 than in 1982 and 1983. This was thought to be due to later extinction of heavier snow in 1981 than in the other years. The population remained relatively stable for the three successive generations, with estimated total numbers of 914, 1277, and 869. Estimated sex ratio (% females) was 30–40% at emergence