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Autothysis by Boondawg
Started on: 04-23-2020 01:33 AM
Replies: 5 (202 views)
Last post by: 82-T/A [At Work] on 04-23-2020 06:17 PM
Boondawg
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Report this Post04-23-2020 01:33 AM Click Here to See the Profile for BoondawgSend a Private Message to BoondawgEdit/Delete MessageReply w/QuoteDirect Link to This Post
Incredibly interesting Science!

 
quote
Autothysis, or suicidal altruism is the process where an animal destroys itself via an internal rupturing or explosion of an organ which ruptures the skin. The term was proposed to describe the defensive mechanism of a species of ant. It is caused by a contraction of muscles around a large gland that leads to the breaking of the gland wall, releasing a sticky secretion and producing a tar effect in defense against ants.

Termites:
There are groups of termites whose soldiers have been found to use autothysis to defend their colonies. This is thought to be one of the most effective forms of defense that termites possess as the ruptured workers block the tunnels running into the nest and it causes a one-to-one exchange between attackers and defenders, meaning attacks have a high energy cost to predators.

Ants:
Some ants have adapted to using autothysis as an altruistic defensive trait to better fight against arthropods and to possibly deter vertebrate predators for the benefit of the colony as a whole. These ants use autothysis as a self-destructive defense to protect their territory, but they use it differently from termites, in that their primary uses for autothysis do not include blocking the tunnels of their territory from attackers, but more so for combat purposes during territorial battles.

Early ants used mechanical means of stinging to defend themselves, but the stings showed to be more useful against large vertebrate predators and not as successful against other arthropods. So selection for autothysis in ants evolved as a way to more effectively kill arthropod enemies. The products of autothysis in ants are sticky and corrosive substances, released by the ants' contraction of their gasters, leading to a burst at an intersegmental fold, as well as the mandibular glands. The ants use this self-sacrifice to kill one or more enemies which entangle themselves in this sticky substance. The worker ant has been observed to wrap itself around an opponent, placing its dorsal gaster onto the opponent's head before expelling sticky corrosive material from its mouth and gaster, permanently sticking to the opponent while killing itself and the enemy, as well as any other enemies that become stuck to the products.

These ants mostly use autothysis against other arthropods, like invading ant colonies or against termite colonies, and are rather ineffective towards larger vertebrate predators such as lizards or birds. This self-sacrifice is most useful against arthropods because the sticky adhesives in the products work best against the bodies of other arthropods. The compounds used in autothysis, however, have also been explained to have some use in deterring vertebrate predators from eating the ants, because these products are inedible.


https://en.wikipedia.org/wiki/Autothysis
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rinselberg
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Report this Post04-23-2020 01:43 AM Click Here to See the Profile for rinselbergClick Here to visit rinselberg's HomePageSend a Private Message to rinselbergEdit/Delete MessageReply w/QuoteDirect Link to This Post
You are NOT a scientist.


Who am I?

Click to show


[This message has been edited by rinselberg (edited 04-23-2020).]

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rinselberg
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Report this Post04-23-2020 02:00 AM Click Here to See the Profile for rinselbergClick Here to visit rinselberg's HomePageSend a Private Message to rinselbergEdit/Delete MessageReply w/QuoteDirect Link to This Post

rinselberg

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Member since Mar 2010
That is only one of two possibilities. Here's the other:

 
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You are NOT a scientist...RONALD.

GET HELP



Like this:
https://www.fiero.nl/forum/F.../124602-12.html#p467


That's the Old Switch'eroo? The Forum Fumblerooski? Identity Theft?

"You" decide what to call it.

[This message has been edited by rinselberg (edited 04-23-2020).]

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maryjane
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Report this Post04-23-2020 02:24 AM Click Here to See the Profile for maryjaneSend a Private Message to maryjaneEdit/Delete MessageReply w/QuoteDirect Link to This Post
Get away from my colony entrance or I'll blow myself up! I'll do it dammit..don't make me..I mean it!


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Patrick
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Report this Post04-23-2020 02:18 PM Click Here to See the Profile for PatrickSend a Private Message to PatrickEdit/Delete MessageReply w/QuoteDirect Link to This Post

I don't care how obnoxious a certain forum member gets, I am not using Autothysis as a form of defense.
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82-T/A [At Work]
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Report this Post04-23-2020 06:17 PM Click Here to See the Profile for 82-T/A [At Work]Send a Private Message to 82-T/A [At Work]Edit/Delete MessageReply w/QuoteDirect Link to This Post
 
quote
Originally posted by Boondawg:

"Autothysis, or suicidal altruism is the process where an animal destroys itself via an internal rupturing or explosion of an organ which ruptures the skin."



I am convinced that this is what my air conditioning unit did on my rental home. The tenant spent the past 6 months telling me I should get a newer / larger air conditioning unit so that it cools off quicker, then one day... the unit apparently blew itself apart... strange and odd... I heard it was called HVACthysis.




 
quote
Originally posted by rinselberg:

You are NOT a scientist.

Who am I?






I'm going to say it's Halloween, and she's playing the demonic nun from The Conjuring...


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