Suicide - in Other Species

In Other Species

"Suicide" has been observed in salmonella seeking to overcome competing bacteria by triggering an immune system response against them. Suicidal defences by workers are also noted in a Brazilian ant Forelius pusillus where a small group of ants leaves the security of the nest after sealing the entrance from the outside each evening.

Pea aphids, when threatened by a ladybug, can explode themselves, scattering and protecting their brethren and sometimes even killing the lady bug. Some species of termites have soldiers that explode, covering their enemies with sticky goo.

Asian black bears being used as "bile bears" are known to frequently try to kill themselves as a result of the severe pain caused by the permanent holes in their abdomen and gall bladder.

There have been anecdotal reports of dogs, horses, and dolphins committing suicide, but with little conclusive evidence. There has been little scientific study of animal suicide.

Read more about this topic:  Suicide

Other articles related to "species, in other species":

Nemertea
... All species have a proboscis which lies in the rhynchocoel when inactive but everts (turns inside-out) to emerge just above the mouth and capture the animal's prey with venom ... A few species with stubby bodies filter feed and have suckers at the front and back ends, with which they attach to a host ... have various chemoreceptors, and on their heads some species have a number of pigment-cup ocelli, which can detect light but not form an image ...
Nemertea - Taxonomy
... Comprises 100 marine species ... Comprises about 400 species ... Includes seven species, of which six live as commensals in the mantle of large clams and one in that of a freshwater snail ...
Orthoptera - Life Cycle
... Orthopteroid species have a paurometabolous life cycle or incomplete metamorphosis ... The use of sound is generally crucial in courtship, and most species have distinct songs ... The number of moults varies between species growth is also very variable and may take a few weeks to some months depending on food availability and weather conditions ...
Liar - In Other Species
... The capacity to lie has also been claimed to be possessed by non-humans in language studies with great apes ... Even Koko, the gorilla made famous for learning American Sign Language has been caught red-handed ...

Famous quotes containing the word species:

    The French manner of hunting is gentlemanlike; ours is only for bumpkins and bodies. The poor beasts here are pursued and run down by much greater beasts than themselves; and the true British fox-hunter is most undoubtedly a species appropriated and peculiar to this country, which no other part of the globe produces.
    Philip Dormer Stanhope, 4th Earl Chesterfield (1694–1773)