It sure pays to protect a damsel (crab) in distress (via Boston Globe):
SYDNEY—In the world of fiddler crabs, the best form of protection for females is, apparently, having sex with the neighbors, according to an Australian study published Wednesday.
Researchers from The Australian National University in Canberra found male fiddler crabs will happily defend a nearby female against intruders — partly because the females will dole out sex in return.
“The fact that the neighbor comes over and helps to defend another territorial individual is pretty unusual,” said Michael Jennions, who helped conduct the study, the results of which were published in the journal Biology Letters.
“This study shows, for the first time, that in exchange for sex and other benefits, males protect their female neighbors from territory-seeking male intruders. The paper provides the first evidence of ‘defense coalitions’ between territorial males and females,” he said.
Sex for favors: behavior strictly confined to the animal kingdom.
– Gautam Dutta
So you’re saying plants don’t do this?
By Justin on November 5th, 2009