The Antenchinus is a mammal that resembles a mouse with the bristly fur of a hedgehog and it belongs to the genus of dasyurid marsupial. They are equally small, carnivorous, shrew-like animals that primarily prey on invertebrates such as spiders, beetles and weevils. Their females carry pouches just like some other female marsupials. Examples include Kangaroos and Koalas. The male Antenchinus is one of the animals that practices suicidal reproduction. To them, sex is worth dying for. During mating they spend their time with one female after another sometimes lasting up to 12-14 hours per session. These dads die after devoting all their resources and energy to mating, an effort that helps their sperm-and genes-survive even when they are long gone.
As her name implies, she hardly gets to
have a husband or male partner because she ends up eating them up. They
practice what is called ‘sexual cannibalism’. Scientists are not clear on why
these spiders eat up their mates though they have factored some reasons like: their
choice of mate, aggressive tendencies towards prey, mistaken identity, among
others.
Praying Mantis
The male Praying Mantis is equally on a
suicidal reproductive mission. In the course of mating, the male bends over
while the female bites of its head and begins to devour him – the male spilling
more semen as he is devoured.
Drone (Bee)
A drone is a male bee that is the
product of an unfertilized egg. They do not have stingers and can’t partake in
nectar and pollen gathering. Their primary role is to mate with a fertile
queen. Their penis is designed to disperse a large quantity
of seminal fluid and spermatozoa with great speed and force. Mating takes place
in the air and it takes less 5 seconds. The ejaculation is so powerful that it
ruptures the abdomen as the penis cuts off from its body and ends up in the
queen. The leftover penis remaining in the queen’s vagina is referred to as the
“mating sign” which acts as a plug, preventing semen from flowing out of the
vagina but not enough to prevent the next drone from mating.
Octopus
It has two eyes and
four pairs of arms and is bilaterally symmetric, that is, the body can be
divided vertically into two equal halves (left and right halves) with one of
each sense organ and limb pair on either side. Most octopuses have no internal
or external skeletons and they are among the most intelligent animals. When it
comes to mating they have no immediate issues during or after mating. However,
the males’ woes come months after mating - It dies, while females follow suit
after their eggs hatch.
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