Crab Vacancy Chains (Article)

Older topics that are in the process of being sorted and moved into the appropriate Archived sections below.
Locked
User avatar

Topic author
Kilimanjaro
Posts: 898
Joined: Fri Aug 11, 2006 2:47 pm
Location: Orange, CA
Contact:

Crab Vacancy Chains (Article)

Post by Kilimanjaro » Wed Aug 22, 2012 3:00 am

I just stumbled upon a really cool article on the Internet about hermit crabs and mass shell changes. :) These biologists went to a small island to study the behavior of a colony of land hermit crabs there. Crabs in the wild, when changing shells, will often do mass shell changes and make a little conga line! :lol:
When a lone crab encountered one of the beautiful new shells, it immediately inspected the shelter with its legs and antennae and scooted out of its current home to try on the new shelter for size. If the new shell was a good fit, the crab claimed it. Classic hermit crab behavior. But if the new shell was too big, the crab did not scuttle away disappointed—instead, it stood by its discovery for anywhere between 15 minutes and 8 hours, waiting. This was unusual. Eventually other crabs showed up, each one trying on the shell. If the shell was also too big for the newcomers, they hung around too, sometimes forming groups as large as 20. The crabs did not gather in a random arrangement, however. Rather, they clamped onto one another in a conga line stretching from the largest to smallest animal—a behavior the biologists dubbed "piggybacking."

Only one thing could break up the chain of crabs: a Goldilocks hermit crab for whom the shell introduced by Lewis and Rotjan was just right. As soon as such a crab claimed its new home, all the crabs in queue swiftly exchanged shells in sequence. The largest crab at the front of the line seized the Goldilocks crab's abandoned shell. The second largest crab stole into the first's old shell. And so on.
In the article they describe hermit crabs as having above-average intelligence than regular crabs. :D I thought the entire article was rather interesting and comes with a cool video, too!

You can read the full article here: Click!

User avatar

fluffy
Posts: 106
Joined: Sun Jul 15, 2012 11:29 pm
Location: portland, oregon

Re: Crab Vacancy Chains (Article)

Post by fluffy » Wed Aug 22, 2012 3:03 am

Thats amazing. i knew one shell change sets of a huge chain reaction but not that they line up.

User avatar

aussieJJDude
Administrator
Administrator
Posts: 4597
Joined: Fri Feb 24, 2012 8:12 pm
Location: Melbourne, Australia

Re: Crab Vacancy Chains (Article)

Post by aussieJJDude » Wed Aug 22, 2012 7:05 am

It like waiting for you favourite movie/pop star! LOL
Crabs || Fish || Shrimp || Snails || Plants || Insects

25G Nano Freshwater || 64G Freshwater Community || 90G Fancy Goldie Pond || 64G Crabitat
I've never had any problems with 'Impulse Buying'... They're just things I forgot I had planned to get || Self Designated 'HCA Pic Fan' 2012+

Locked