The capacity for sperm storage within the female reproductive tract occurs widely across all
groups of vertebrate species and is exceptionally well developed in some reptiles (maximum …

ABSTRACT The Darwin–Bateman paradigm predicts that females enhance their fitness by
being choosy and mating with high‐quality males, while males should compete to mate with …

The use of regression analysis has been instrumental in allowing evolutionary biologists to
estimate the strength and mode of natural selection. Although directional and correlational …

Male mammals often kill conspecific offspring. The benefits of such infanticide to males, and
its costs to females, probably vary across mammalian social and mating systems. We used …

Females often mate with several males before producing offspring. Field studies of
vertebrates suggest, and laboratory experiments on invertebrates confirm, that even when …

In most mammalian species, females regularly interact with kin, which is expected to reduce
aggressive competitive behaviour among females. It may thus be difficult to understand why …

Suicidal reproduction (semelparity) has evolved in only four genera of mammals. In these
insectivorous marsupials, all males die after mating, when failure of the corticosteroid …

Previous studies have attempted to assess the reproductive benefits of polyandry in
mammals but have failed to account for variation in mating frequency across experimental …

Most living carnivorous marsupials lead a secretive and solitary existence. From tiny insect
eaters to the formidable Tasmanian Devil, Secret Lives of Carnivorous Marsupials offers rare …

Antechinus are a genus of mouse-like marsupials that exhibit a rare reproductive strategy
known as semelparity and also naturally develop age-related neuropathologies similar to …