Body condition and pregnancy in northern Yellowstone elk: evidence for predation risk effects?

@article{White2011BodyCA,
  title={Body condition and pregnancy in northern Yellowstone elk: evidence for predation risk effects?},
  author={Patrick J. C. White and Robert A. Garrott and Kenneth L. Hamlin and Rachel C. Cook and John Granger Cook and Julie A. Cunningham},
  journal={Ecological applications : a publication of the Ecological Society of America},
  year={2011},
  volume={21 1},
  pages={
          3-8
        }
}
S. Creel et al. reported a negative correlation between fecal progesterone concentrations and elk:wolf ratios in greater Yellowstone elk (Cervus elaphus) herds and interpreted this correlation as evidence that pregnancy rates of elk decreased substantially in the presence of wolves (Canis lupus). Apparently, the hypothesized mechanism is that decreased forage intake reduces body condition and either results in elk failing to conceive during the autumn rut or elk losing the fetus during winter… CONTINUE READING

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