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- Title
Allocleaning behavior by the sentinel crab Macrophthalmus banzai: a case of mutual cooperation.
- Authors
Fujishima, Yurika; Wada, Keiji
- Abstract
The macrophthalmid crab Macrophthalmus banzai performs allocleaning behavior, in which an individual feeds off the carapace or walking legs of a conspecific male or female. Cleaning continues until the recipient ('cleanee') rejects the cleaning or the cleaner ceases cleaning. In cases where the recipient did not reject the cleaning, the cleanee often retreated to its own burrow site after the cleaner ceased cleaning, allowing the cleaner to feed on its territory. We suggest that this is mutual cooperation, in which the cleaner assists the recipient to clean the body surface, and the recipient in return provides a feeding ground for the cleaner. Using field observation, we explored the factors responsible for the retreat of the cleanee in response to the cleaning behavior. Factors influencing the retreat of the cleanee were the time of the cleaning incident relative to low tide, the cleanee's position relative to its own burrow, and the duration of the cleaning bout. The third factor showed that retreat was more common when the cleaning was thorough, which suggests that allocleaning is a form of mutual cooperation in M. banzai.
- Subjects
CRAB behavior; MACROPHTHALMUS; ANIMAL burrowing; ANIMAL behavior; BODY size; VERTEBRATES; CRUSTACEA
- Publication
Journal of Ethology, 2013, Vol 31, Issue 2, p219
- ISSN
0289-0771
- Publication type
Article
- DOI
10.1007/s10164-013-0360-6