Density‐dependent changes in sex ratio in  Colias lesbia  (Lepidoptera: Pieridae) | Zendy

BERNSTEIN CARLOS | Zendy

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Density‐dependent changes in sex ratio in Colias lesbia (Lepidoptera: Pieridae)

Author(s) -

BERNSTEIN CARLOS

Publication year - 1980

Publication title -

ecological entomology

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.865

H-Index - 81

eISSN - 1365-2311

pISSN - 0307-6946

DOI - 10.1111/j.1365-2311.1980.tb01130.x

Subject(s) - pieridae , sex ratio , biology , lepidoptera genitalia , population density , population , zoology , ecology , demography , sociology

.1 The changes in sex ratio of a population of Colias lesbia were studied for four consecutive years. 2 A constant sex ratio was found in the samples taken in the 34 days following the last harvest of the alfalfa. 3 For the samples taken 35 or more days after the harvest the sex ratio decreases as the total number of adults caught increases. 4 The indirect evidence collected suggests that differences in emigration tendencies between sexes play a major role in determining the sex ratio in this species.

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