Costs of Sexual Selection in the Sand Fiddler Crab, Uca Pugilator

Costs of Sexual Selection in the Sand Fiddler Crab, Uca Pugilator

4.11 - 1251 ratings - Source



This dissertation investigates the costs and condition-dependence of sexually selected traits in the sand fiddler crab, Uca pugilator. Theory suggests that sexually selected structures and behavioral displays are honest signals of male quality to opponents and mates that are costly to produce and maintain. In mid-Atlantic salt marshes, reproductively active males use a single greatly enlarged major claw as both a weapon to defend specialized breeding burrows from other males and an ornament to attract females for mating. Carrying the major claw, which can comprise as much as 40% of the total body mass, imposes significant energetic and locomotor costs to male fiddler crabs. These costs are exacerbated by the location of breeding burrows in open areas high on the shore characterized by low food availability and high temperatures.(a) Size-specific effects of desiccation on locomotor performance I exercised male fiddler crabs from each size class individually on a motorized treadmill (Pro- Form 285T modified with a Dayton 4Z861 10:1 speed reducer) at a velocity of 4 m anbsp;...


Title:Costs of Sexual Selection in the Sand Fiddler Crab, Uca Pugilator
Author:
Publisher:ProQuest - 2007
ISBN-13:

You must register with us as either a Registered User before you can Download this Book. You'll be greeted by a simple sign-up page.

Once you have finished the sign-up process, you will be redirected to your download Book page.

How it works:
  • 1. Register a free 1 month Trial Account.
  • 2. Download as many books as you like (Personal use)
  • 3. Cancel the membership at any time if not satisfied.


Click button below to register and download Ebook
Privacy Policy | Contact | DMCA