Ants as seed dispersers - part I

Aphaenogaster workers tasting the elaiosome of a bloodroot seed. Illinois.

Aphaenogaster workers tasting the elaiosome of a bloodroot seed. Illinois.

Some plants have come to rely so heavily on ants to spread their seeds about that they offer the insects a tasty treat in exchange for the dispersal service.  Seeds of these species bear a lipid-filled structure called an elaiosome, whose sole function appears to be the attraction of ants.  A recent study suggests that plant lineages dependent on ants in this way speciate more rapidly than related ant-free lineages.

fulva5

photo details (both photos): Canon MP-E 65mm 1-5x macro lens on a Canon EOS 50D

ISO 100, 1/160 sec, f13, indirect strobe in a white box

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Does anyone have a fairly complete list of plants distributed in this way?

By MrILoveTheAnts (not verified) on 09 Jun 2009 #permalink