UsaFishBox
Welcome to USAFishBox! You are currently viewing the forum as a guest. To view the index and portal you must be a member. Please click the register button to join NOW for FREE.!..Finally check out the 24 hour live chat !!!

UsaFishBox

USA Fishbox is THE place where fish freaks come together. Here at USA we talk aquatics all day long. If you are new please sign up and join in.
 
facebookForumHomeLog inRegisterFAQ
Welcome to USA Fishbox. If you are a guest please sign up. This forum is 100% free to use.




















Share
 

 New COOL research on Fiddler crabs

Go down 
AuthorMessage
KMX
Admin
Admin
KMX

Posts : 16094
Location : Mansfield, TX
Favorite Fish: : African Cichlids of all kinds.

New COOL research on Fiddler crabs  Empty
PostSubject: New COOL research on Fiddler crabs    New COOL research on Fiddler crabs  Icon_minitime9/7/2011, 9:20 am




New COOL research on Fiddler crabs  4e67690e5b86a


Copyright © Charles Lam, Creative Commons





New research has discovered that male fiddler crabs use their impressive giant claws not only to attract females, but to stay cool while doing so.



Dr Zachary Darnell and Assistant Professor Pablo Munguia from the University of Texas, US discovered that crabs still in possession of the impressive pincer were able to cool themselves more rapidly than those without, demonstrating that the claw helps control temperature.



They studied the effects of heat on Gulf coast fiddler crabs (Uca panacea) by shining lamps on male crabs with and without the giant claw and measuring the crab's body temperature every 10 minutes while doing so. They found that claw-less crabs took far longer to cool.



Dr. Darnell believes this shows that the claw acts as a 'heat sink' transferring excess body heat to the claw where it can be dissipated into the air. This heat dispersing benefit would help offset the physical cost to the crab of growing such an extravagant nipper as well as the disadvantages the cumbersome claw causes males by slowing them down and hindering feeding.



Male fiddlers are risking heat stress and hunger while performing claw waving displays and searching for food in the tropical sun but it seems the big claw allows them to remain out of their burrows longer, gaining advantage over clawless rivals for food and females.

There are around 100 species of fiddler crabs in the genus Uca found living semi-terrestrial lives along coastal habitats such as beaches, lagoons and mangrove swamps. They are small, short lived creatures rarely reaching more than a few centimetres across or living more than a couple of years and are detritivores, sifting edible matter from the sediments they live upon.
Published: Bob Mehen

**********USAfishbox.com*************


Expand the hobby!

Don't blame me, I voted RON PAUL !!


New COOL research on Fiddler crabs  CMSIG
Back to top Go down
Holey Rock of Texas
Admin
Admin
Holey Rock of Texas

Posts : 6531
Location : Dallas, TX
Favorite Fish: : shellys

New COOL research on Fiddler crabs  Empty
PostSubject: Re: New COOL research on Fiddler crabs    New COOL research on Fiddler crabs  Icon_minitime9/7/2011, 9:57 am

cool. they can excaspe a tank like no other.

**********USAfishbox.com*************


New COOL research on Fiddler crabs  Sig-HoleyRockcopy

www.holeyrockoftexas.com
New COOL research on Fiddler crabs  CAST-Sig
Back to top Go down
BFinley
Admin
Admin
BFinley

Posts : 4498
Location : Fort Worth,Tx
Favorite Fish: : Frontosa and Red Tail Catfish and All Africans

New COOL research on Fiddler crabs  Empty
PostSubject: Re: New COOL research on Fiddler crabs    New COOL research on Fiddler crabs  Icon_minitime9/7/2011, 10:04 am

Nice info! usafishbox

**********USAfishbox.com*************


New COOL research on Fiddler crabs  CMSIG

New COOL research on Fiddler crabs  CAST-Sig

Say hello to my little friend

usafishbox usafishbox usafishbox usafishbox
Back to top Go down
Ben
Moderator
Moderator
Ben

Posts : 1878
Location : Sandston, Virginia
Favorite Fish: : Venustus and Catfish

New COOL research on Fiddler crabs  Empty
PostSubject: Re: New COOL research on Fiddler crabs    New COOL research on Fiddler crabs  Icon_minitime9/7/2011, 10:29 am

Thanx for the info Kory. They are really neat to watch.

**********USAfishbox.com*************


New COOL research on Fiddler crabs  CMSIG
Back to top Go down
Sponsored content




New COOL research on Fiddler crabs  Empty
PostSubject: Re: New COOL research on Fiddler crabs    New COOL research on Fiddler crabs  Icon_minitime

Back to top Go down
 
New COOL research on Fiddler crabs
Back to top 
Page 1 of 1

Permissions in this forum:You cannot reply to topics in this forum
UsaFishBox :: :: SaltWater Aquaria :: Seahorses & All Invertebrates.-
Jump to: