Jan Ryser

Determination of growth and maturation in the common frog, Rana temporaria, by skeletochronology

Jan Ryser, 1988 .

Weight loss, reproductive output, and the cost of reproduction in the common frog, Rana temporaria

Jan Ryser, 1989, Oecologia.

Clutch parameters in a swiss population of Rana temporaria

Jan Ryser, 1988 .

The mating system and male mating success of the Virginia opossum (Didelphis virginiana) in Florida

Jan Ryser, 1992 .

First-Cohort Advantage Hypothesis: A New Twist on Facultative Sex Ratio Adjustment

R. Kiltie, D. D. Wright, Jan Ryser, 1995, The American Naturalist.

The breeding migration and mating system of a Swiss population of the common frog Rana temporaria

Jan Ryser, 1989 .

Comparative life histories of a low- and a high-elevation population of the common frog Rana temporaria

Jan Ryser, 1996 .