Filters: Tags: Parturition (X)24 results (44ms)
As part of a captive-breeding program to restore extirpated Columbia Basin pygmy rabbits (Brachylagus idahoensis) to their native habitat in Washington, we documented mating and parental care behavior of these lagomorphs, which was previously unknown. Pygmy rabbits bred from late February through early June, and mating behavior consisted of chasing and brief copulations. Although presented with 1â€“4 mating partners and 1â€“6 mating opportunities annually, only 74% of females became pregnant each year. Unlike other lagomorphs, females dug a 16- to 35-cm natal burrow, usually separate from the residential burrow system, an average of 13 days after a successful copulation. Twenty-four days after copulation, females...
Regional Social Contexts and Individual Fertility Decisions: A Multilevel Analysis of First and Second Births in Western Germany
Direct positive effect of invertebrate predators on birth rate in Daphnia studied with a new method of birth rate analysis
Prolactin Levels during the Periparturitional Period in the Biparental Cotton-Top Tamarin ( Saguinus oedipus ): Interactions with Gender, Androgen Levels, and Parenting
Distinctive features of age-specific fertility profiles in the English-speaking world: Common patterns in Australia, Canada, New Zealand and the United States, 1970-98