do spiders kill each other after maiting?

Answer 1

In many cases the female kills the male after mating. The female sticks around until she lays the eggs. In many cases the spiderlings, when they hatch, eat the mother--their first meal made easy.

Answer 2

To begin with, most kinds of spiders have never
been seen mating, so no one knows what they do.
Of the ones that have been observed, few, if any,
normally kill each other. The notion that the black
widow does so is another natural history myth. I
know a person who raised black widows for his
research. He said he had watched about 500
matings, and had never seen the female kill the
male.

This story probably got started in one or another of
two ways - if spiders are disturbed during mating
one or the other may kill and maybe even eat the
mate; also, if the female has already mated with
another male she may no longer be interested in
mating and will view another courting male as
potential food. This may happen even when the
male she attacks is the one she had previously
mated with some days earlier. I have seen this
happen with jumping spiders.

Answer 3

NO Sometimes the female spider eats the male but it depends on the species

Answer 4

Many of them do.
The black widow is a good example.
They may eat the partner for nourishment or maybe leave the carcass for the babies.

Answer 5

Not all of them,only the black widow is known to that after mating.