Animal Reproduction

The Grandmother Hypothesis for Menopause

July 28, 2021 0
We’ve already covered one hypothesis for why menopause exists, but there is another main hypothesis for the advent of reproductive cessation, and this one is an adaptive one. Picture it: as ancestral humans were expanding […]
Animal Parenting

Maternal Behaviour and Recognition

July 21, 2021 0
Physiological, social, and environmental elements have influenced the evolution of the immense diversity in maternal behaviour across the mammalian order. There are two general phases of the establishment of maternal care in primates: the initial […]
Animal Reproduction

Female Fire Salamanders Can Store Sperm For Months

July 14, 2021 0
In many anuran (frog and toad) species, females have a sperm-storage organ (a spermatheca) that enables them to keep sperm for long periods of time. This too can allow for the possibility of female choice […]
Animal Nutrition

Optimal Foraging Theory

July 7, 2021 0
Optimal foraging theory predicts that when there is intense competition for preferred resources, organisms should increase their diet breadth to include other less optimal items. In this way, biological fitness is maximized by striking a […]