Abstract
Hermit crabs recognize different shell attributes and choose shell size, type, or species to maximize their individual fitness. Aquatic hermit crab species commonly prefer relatively heavy shells species in contrast to semi-terrestrial crabs which prefer lighter shells. Lighter shells favor rapid growth and increase individual fitness because larger individ- ual achieve higher success in intra- and inter-individ- ual competition. In this study, we experimentally measured the daily growth of hermit crabs Calcinus californiensis that were forced to occupy four different shell species with different internal volume to mass ratios (IV/M ratio), and whose sequence in preference is known from previous studies (Cantharus ( Stra- monita ( Columbella ( Nerita). The shell with the highest IV/M ratio (Nerita) favored body growth rate, while the relatively heaviest (lowest IV/M ratios) and most preferred shells (Stramonita and Cantharus) hindered body growth. Our results suggest that in this aquatic hermit crab, the benefits of carrying heavy shells that give better predatory protection exceeded the benefits of rapid growth that can be obtained using lighter, thinner, and less protective shells.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
