Ian P. Callard

The annual ovarian cycle of Chrysemys picta: Correlated changes in plasma steroids and parameters of vitellogenesis

Ian P. Callard, Valentine A. Lance, Adele R. Salhanick et al. · General and Comparative Endocrinology · 1978 · 191 citations

Biology, Annual Ovarian Cycle, Plasma Steroids +12

Role of the Corpus Luteum and Progesterone in the Evolution of Vertebrate Viviparity

Ian P. Callard, Lisa A. Fileti, Lorelei E. Perez et al. · American Zoologist · 1992 · 113 citations · Full text

Corpus Luteum, Vertebrate Viviparity, Fertility +18

REGULATION OF VITELLOGENESIS IN REPTILES

Shuk‐Mei Ho, Stanley J. Kleis, R McPherson et al. · 2016 · 104 citations

Fertility, Female Reproductive Function, Reproductive Biology +19

Hormones and reproduction in the female lizard Sceloporus cyanogenys

Ian P. Callard, C.G. Bayne, W.F. McConnell · General and Comparative Endocrinology · 1972 · 102 citations

Biology, Comparative Endocrinology, Female Reproductive System +8

Plasma Estradiol, Testosterone, and Progesterone Levels during the Ovulatory Cycle of the Skate (Raja Erinacea)1

Thomas J. Koob, P. Tsang, Ian P. Callard · Biology of Reproduction · 1986 · 102 citations · Full text

Fertility, Estradiol Titers, Reproductive Physiology +15