Animal Reproduction
Cryptic Female Choice
“Cryptic female choice” is essentially a female’s way of exercising some post-coital power over whose sperm will fertilize her eggs. There are many reasons why
August 25, 2021
Category: Books
Animal Reproduction
Male Rats Run Out Of Sperm But Still Engage In Sex
Rats (superfamily Muroidea) have a well-studied mating system that often involves males becoming sexually satiated. This means that they literally get tapped out of sperm
August 18, 2021
Animal Reproduction
Obligate Diapause – Suspending Pregnancies in Carnivores
As opposed to the rodents who experience facultative diapause, carnivore moms experience obligate diapause. Obligately diapausing mothers experience a period of embryonic inactivity each time
August 11, 2021
Animal Health
Self-Anointing For Medical Care
A dab of this, a drop of that – we humans are consistently covering our bodies with creams, oils, and ointments of all kinds. From
August 4, 2021
Animal Reproduction
The Grandmother Hypothesis for Menopause
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
July 28, 2021
Animal Parenting
Maternal Behaviour and Recognition
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
July 21, 2021
Animal Reproduction
Female Fire Salamanders Can Store Sperm For Months
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.
July 14, 2021
Animal Nutrition
Optimal Foraging Theory
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.
July 7, 2021
Animal Nutrition
Food Preparation Among Animals
Most foods that humans eat are altered in some way before we consume them. Our species has developed elaborate ways in which to change the
June 30, 2021
Book Excerpts
Are Humans A Part of Nature?
It can be argued that our species evolved just like any other and that all our actions are justified under the umbrella of what is
June 23, 2021