Further Observations On The Sex-Ratios Of Terrestrial Isopods

Authors

S. W. Geiser, Southern Methodist University

Publication Date

11-1-1934

Abstract

Vandel contends that in terrestrial isopods the females are more numerous than males in collections. He gives tables showing the sex-ratios of collections of ten species…. Although Vandel finds that the sex-ratios of adult collections are one-sided in favor of the female sex, he nevertheless finds that in cultures of the species which he made, the sexes were about equally represented at birth, and in young populations. This accords with the findings of the present writer, who found the sexes approximately equal in very young populations of Armadillidium vulgare and Porcellio laevis.

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Recommended Citation

Geiser, S. W. (1934) "Further Observations On The Sex-Ratios Of Terrestrial Isopods," Field and Laboratory: Vol. 3 : No. 1.
Available at: https://scholar.smu.edu/fieldandlab/vol3/iss1/3