The High Cost of Parenthood: New Study Quantifies the 10% “Longevity Tax” on Reproduction

When mammals have offspring, both in the wild and in captivity, new life is celebrated. This is especially true for species ...
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Reproduction in mammals, edited by C. R. Austin and R. V. Short. Illus. by John R. Fuller

v. 1. Germ cells and fertilization.--v. 2. Embryonic and fetal development.--v. 3. Hormones in reproduction.--v. 4. Reproductive patterns.--v. 5. Artificial control ...
EurekAlert!

Contraception and castration increase lifespan in mammals

Why do lifespans vary across different species? A female elephant can live up to 80 years, but usually only has a few calves during her lifetime. A mouse, on the other hand, lives for a few years at ...
EurekAlert!

Aging zoo animals threaten long-term species conservation goals of modern zoos

The analysis of Meireles and colleagues shows that reproduction, as shown here in the endangered Grévy's zebra (Equus grevyi), is on the decrease across zoo mammal populations. FRANKFURT/ZURICH.
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Mammalian energetics : interdisciplinary views of metabolism and reproduction / edited by Thomas E. Tomasi, Teresa H. Horton

Energy expenditure: a short history / Brian K. McNab -- Standard, cold-induced, and exercise-induced metabolism of rodents / Richard E. MacMillen and David S. Hinds -- Aquatic locomotion / Frank E.