Do cleaning organisms reduce the stress response of client reef fish? | - CCMAR -

Journal Article

TitleDo cleaning organisms reduce the stress response of client reef fish?
Publication TypeJournal Article
AuthorsBshary, R, Oliveira, RF, Oliveira, TSf, Canario, AVM
Year of Publication2007
JournalFront Zool
Date Published2007

BACKGROUND: Marine cleaning interactions in which cleaner fish or shrimps remove parasites from visiting 'client' reef fish are a textbook example of mutualism. However, there is yet no conclusive evidence that cleaning organisms significantly improve the health of their clients. We tested the stress response of wild caught individuals of two client species, Chromis dimidiata and Pseudanthias squamipinnis, that had either access to a cleaner wrasse Labroides dimidiatus, or to cleaner shrimps Stenopus hispidus and Periclimenes longicarpus, or no access to cleaning organisms.RESULTS: For both client species, we found an association between the presence of cleaner organisms and a reduction in the short term stress response of client fish to capture, transport and one hour confinement in small aquaria, as measured with cortisol levels.CONCLUSION: It is conceivable that individuals who are more easily stressed than others pay a fitness cost in the long run. Thus, our data suggest that marine cleaning mutualisms are indeed mutualistic. More generally, measures of stress responses or basal levels may provide a useful tool to assess the impact of interspecific interactions on the partner species.


Alternate JournalFront. Zool.
PubMed ID17945011
PubMed Central IDPMC2134928
CCMAR Authors