Comparative mortality levels among selected species of captive animals
We present life tables by single year of age and sex for groups of animals and for 42 individual mostly mammalian species. Data are derived from the International Species Information System. The survivorship of most of these species has never been mapped systematically. We demonstrate that, in most of the groups, female survivorship significantly exceeds […]
Zoos and a century of change
Over the last 100 years changes in life-style expectations of the human population have brought about unprecedented demands on the Earth’s resources. Over the same period responsible zoos have developed from menageries to satisfy the curiosity of the masses to conservation organizations with a greater sensitivity to the welfare of animals and an improved knowledge […]