Edward D. Plotka
Marshfield Clinic
27 Papers
445 Citations
Edward D. Plotka is an academic researcher from Marshfield Clinic. The author has contributed to research in topics: Estrous cycle & Luteal phase. The author has an hindex of 19, co-authored 27 publications. Previous affiliations of Edward D. Plotka include Patuxent Wildlife Research Center.
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Papers
Endocrine Correlates of Reproduction in the Wolf. I. Serum Progesterone, Estradiol and LH during the Estrous Cycle
TL;DR: The estrous cycle of 10 intact female wolves, aged 8 months-8 years at the initiation of the study, was characterized in terms of vaginal smears, behavioral observations and serum concentrations of estradiol-17(3, progesterone and luteinizing hormone (LH) from January through June.
Ovarian Function in the Elephant: Luteinizing Hormone and Progesterone Cycles in African and Asian Elephants
Edward D. Plotka,Ulysses S. Seal,Fred R. Zarembka,L. G. Simmons,Andrew Teare,Lyndsay Phillips,Keith C. Hinshaw,David G. Wood +7 more
TL;DR: The data suggest that the length of the ovarian cycle in the African elephant is about 16 wk and confirm that the Length of the Ovarian Cycle in the Asian Elephant is about 15 wk.
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Causes of Reproductive Failure in Two Family Groups of Wolves (Canis lupus)
TL;DR: Results of this study tentatively suggest that antagonistic relationships may have influenced the hormonal basis for sexual attractivity of females, for copulatory behaviour of males, and for age of first ovulation in wolves.
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Reproductive Steroids in the White-Tailed Deer (Odocoileus virginianus borealis). II. Progesterone and Estrogen Levels in Peripheral Plasma During Pregnancy
TL;DR: Both estrogen and progesterone levels declined precipitously after parturition after the breeding season and pregnancy in white-tailed deer and there was no relationship between the number of fetuses carried and estrogen levels.