Land Crabs

 

 

 

 

 

 

 

 

 

 

Rolling Harbour dug up this fact sheet on land crabs in The Bahamas.  Not sure
about all of the specific details, but a good place to start regarding their basic
ecology.  To me, the biggest gaps in our knowledge of their life history is the
transition from their pelagic larval stage (just like many marine fishes) to
their terrestrial life.

To my knowledge, very little is known about this transition phase.  When, where, and how do they move back onto land?  It is very likely this life stage serves as a critical bottleneck on population sizes (a bottleneck similar to many marine fishes).    Looking at adult land crab abundance across the islands, one can infer the importance of mangrove creeks for their life history, very likely at this small juvenile stage.  Islands with the greatest number/size of creeks support the largest land crab populations (Andros in particular).  Within islands, land crabs are most abundant in areas of the most extensive mangrove systems (Cherokee and Little Harbour on Abaco for instance).  It is not a big leap to surmise these areas support the largest adult populations because the juveniles first access the coppice via the creeks systems.  Yet another reason why mangrove creek systems are an essential component of the Bahamian Islands.  I would love to see more study on the role of creeks in supporting land crab populations.

By | 2017-12-01T14:04:48-04:00 August 18th, 2012|Categories: Invertebrates, Mangroves and Creeks, Plants|2 Comments

About the Author:

Craig Layman
My lab’s interdisciplinary pursuits provide for a multi-faceted understanding of environmental change in the coastal realm. We are ecologists, asking questions that span population, community, ecosystem and evolutionary sub-disciplines. We often use a food web based perspective, exploring top-down (e.g., predation) and bottom-up (e.g., nutrient excretion) mechanisms by which animals affect ecosystem processes. All of our efforts are framed within a broader outreach framework, directly integrating science and education, using approaches such as this website.

2 Comments

  1. Avatar
    Peak Test Extreme April 24, 2017 at 4:18 pm

    I really like your writing style, superb info, appreciate it for posting :D.

  2. Avatar
    JOSE RIVERA May 4, 2018 at 10:46 am

    MANY REGULATION HAVE BEEN PUT INTO PLACE TO PRESERVE THE BLUE LAND CRAP. THE REALITY IS THAT CONTRUCTION OF RECIDENTIAL AND COMMERTIAL BUILDINGS HAVE DESTROID MUST OF THE AVITAT. UNFAIRLY EXESIVE REGULATION ARE USE TO TARGET FISHIRS WHEN IT SHOULD BE TARGETING THE BUILDERS WHO DESTROID THEIR HAVITAT. IN FLORIDA WOOD TRAPS ARE NOT ALLOW. THAT IS NOT RIGHT. WOOD TRAPS WILL NOT HARD THE CRAP. WHO APPROVE THIS REGULATION HAVE NOT SEE A CRAP EVER. NOT FAIR. NEED TO BE CHANGED.

Leave A Comment