Terrestrial Hermit Crabs Learning Social Tricks

An anonymous reader writes "When it comes to abandoned snail shells that hermit crabs expropriate as mobile homes, size matters, for room to grow, room for eggs, and protection from predators. UC Berkeley evolutionary biologist Mark Laidre found that terrestrial hermit crabs on the Pacific shore of Costa Rica congregate in aggressive swap meets where one crab is forced from a relatively large shell, whereupon the rest trade up (one loser and multiple winners, pretty good odds). The loser gets the smallest shell, which means likely doom. Laidre and his colleagues note that most hermit crabs live in the ocean, where there are usually enough abandoned shells to go around so most can live, well, hermit-like lives without much interaction with fellow crabs. Not so on land, at least in Costa Rica."

Comments

Crabs can also be turned into a computer

[girlinatrainingbra]

Crabs can also be used as the logic gates to compute certain functions. I kid you not! The Boston Globe had an article about some Japanese researchers who used crabs to design logic gates based on their motion on the beach.

Their swarm computing article (pdf link in the journal Complex Systems) is rather interesting.