Tuesday, December 1st, 2009 2 01 /12 / December /2009 17:36

The exchanges trophallactiques are a character appropriate(clean) for the social insects and meet only exceptionally to the other animals; at Camponotus ligniperdus it's the same.

The digestive system of ants includes three parts(parties), after the pharynx, the stomodeum trains(forms) an oesophagus, then a jabot(crop) followed by a gizzard or a proventricle. The mésentéron trains(forms) a stomach. The proctodeum ends naturally by a rectum, which opens in a cesspool.

The récolteuses workers store liquids during their outside fourragement in their jabot(crop) called social jabot(crop) intended for the collective food(supply).

The liquid transport is made possible by the presence at the level of the gizzard of cuticulaires small strips which close the passage between previous and intestine average bowel, in the style of a valve. This closure(lock) and passive and asks for no muscular effort. The workers have naturally the possibility of using a part(party) of the contents of the social jabot(crop) in their profit.

These exchanges of foods are made at several levels in the colony(summer camp):


Between worker and larva


Between workers

- For two

- Donor: widely opened mandibles

- Conductor: closed mandibles

Between said workers "Chief warrant officer"("Major company") and "Minor".

Camponotus ligniperdus

Trophallaxie Camponotus ligniperdus

- For three


Between worker and queen


These exchanges come along between adults of exchanges antennaires between donor and conductor to whom are often added movements made by legs previous.

Myrmécophiles, alive insects within the colony(summer camp) in symbiosis, possibly presents can also benefit from these exchanges.

Reference: ants behavior, social organization and evolution Luc Passera and Serge Aron.

By Chris. - Published in: behavior
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