Reproductive maturation and senescence in the female brown bear

By C. C. Schwartz, K. Keating, H. Reynolds, V. Barnes, Richard A. Sellers, Jon E. Swenson, Sterling Miller, Bruce N. McLellan, J. Keay, Robert G. McCann and 6 more. 2003

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GRIZZLY BEAR DEMOGRAPHICS IN AND AROUND BANFF NATIONAL PARK AND KANANASKIS COUNTRY, ALBERTA (2005, background): “We considered 27 the age of reproductive senescence (Schwartz et al. 2003), which in the matrix analyses was equivalent to all bears dying at this age.”
Sexually selected infanticide in grizzly bears: the effects of hunting on cub survival (2005, background): “Additionally, there were major crop failures of huckleberry (Vaccinium membranaceum) in those years, and some old bears may have reached reproductive senescence (Schwartz et al. 2003).”
Grizzly Bear Population Vital Rates and Trend in the Northern Continental Divide Ecosystem, Montana (2012, background): “Mace et al. NCDE Grizzly Population Trend 125 literature of 3-year-old female brown bears with cub litters (Schwartz et al. 2003).”
The mating system of the brown bear Ursus arctos (2012, methodology): “Polyoestrous cycling facilitates the development of different sets of ova, and thereby increases the potential of these to be fertilized by different males (Pasitschniak-Arts 1993, Craighead et al. 1995b, Schwartz et al. 2003b, Spady et al. 2007).”
Reproductive success of female leopards Panthera pardus: the importance of top-down processes (2013, background): “Maternity rates for leopards mirrored the classic bell-shaped productivity curve evident in many carnivore species (Schwartz et al. 2003).”