What are the sympatric mechanisms for three species of terrestrial hermit crab (Coenobita rugosus, C. brevimanus, and C. cavipes) in coastal forests?

PLoS One. 2018 Dec 12;13(12):e0207640. doi: 10.1371/journal.pone.0207640. eCollection 2018.

Abstract

Terrestrial hermit crabs play a significant role in coastal ecology. For example, as seed dispersers and debris scavengers in coastal forests, they accelerate the decomposition of organic substances. In the Indo-Pacific Ocean, Coenobita rugosus, C. brevimanus, and C. cavipes are the three most common species of terrestrial hermit crab. Because the mechanisms that contribute to the sympatry of these three species of crab have not been identified, this study investigated the three most likely explanations: niche differences, competition, and predation. The results showed that the three species displayed niche differences in terms of seasonal activity, habitat, utilization of shells, and food preference, suggesting that competition for resources is avoided. The habitat of terrestrial hermit crabs in Taiwan is closely associated with that of humans. Our study helps improve our understanding of the ecology of terrestrial hermit crabs and their conservation.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Animals
  • Anomura / metabolism
  • Anomura / physiology*
  • Behavior, Animal
  • Ecosystem
  • Feeding Behavior
  • Food Preferences
  • Forests
  • Pacific Ocean
  • Sympatry / physiology*
  • Taiwan

Grants and funding

The grant No. Ministry of Science and Technology MOST 106-2119-M-003 -003- to Wei-Ta Fang. The funders had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript.