Cookies Policy

This site uses cookies. By continuing to browse the site you are agreeing to our use of cookies.

I accept this policy

Find out more here

Hatching Rhythms of Uca Thayeri: Evidence for Phenotypic Plasticity

No metrics data to plot.
The attempt to load metrics for this article has failed.
The attempt to plot a graph for these metrics has failed.
The full text of this article is not currently available.

Brill’s MyBook program is exclusively available on BrillOnline Books and Journals. Students and scholars affiliated with an institution that has purchased a Brill E-Book on the BrillOnline platform automatically have access to the MyBook option for the title(s) acquired by the Library. Brill MyBook is a print-on-demand paperback copy which is sold at a favorably uniform low price.

This Article is currently unavailable for purchase.
Add to Favorites
You must be logged in to use this functionality

Cover image Placeholder

Abstract Fiddler crabs (Uca thayeri) on Florida's east and west coasts show temporally distinct hatching rhythms, correlated with differences in tidal form. Our purpose in this study was to determine whether these differences were fixed or could change in response to variation in the tides. West coast crabs (but not east coast crabs) showed seasonal variation in their hatching rhythms correlated with seasonal variation in the tides. In the spring, they released larvae at night. In the summer, hatching occurred during the day. West coast crabs transferred to Florida's east coast within four weeks released larvae at night in a rhythm similar to resident crabs but different from the spring nocturnal rhythm shown at their home beach. We conclude that this species has a flexible hatching rhythm that changes under natural, as well as under experimental, conditions. Such flexibility may permit the crabs to time larval release optimally over a range of tidal forms. This study and others published recently suggest that “plasticity” may be characteristic of behavioral rhythms shown by many intertidal crabs.

Affiliations: 1: Department of Biological Sciences, Florida Atlantic University, 777 Glades Road, Boca Raton, Florida 33431, U.S.A. (


Full text loading...


Data & Media loading...

Article metrics loading...



Can't access your account?
  • Key

  • Full access
  • Open Access
  • Partial/No accessInformation