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Wood-based diet and gut microflora of a galatheid crab associated with Pacific deep-sea wood falls
Hoyoux, C.; Zbinden, M.; Samadi, S.; Gaill, F.; Compère, P. (2009). Wood-based diet and gut microflora of a galatheid crab associated with Pacific deep-sea wood falls. Mar. Biol. (Berl.) 156(12): 2421-2439. dx.doi.org/10.1007/s00227-009-1266-2
In: Marine Biology. Springer: Heidelberg; Berlin. ISSN 0025-3162; e-ISSN 1432-1793, meer
Peer reviewed article  

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  • Hoyoux, C.
  • Zbinden, M.
  • Samadi, S.
  • Gaill, F.
  • Compère, P.

Abstract
    Wood falls in the deep sea have recently become the focus of studies showing their importance as nutrients on the deep-sea floor. In such environments, Crustaceans constitute numerically the second-largest group after Mollusks. Many questions have arisen regarding their trophic role therein. A careful examination of the feeding appendages, gut contents, and gut lining of Munidopsis andamanica caught with wood falls revealed this species as a truly original detritivorous species using wood and the biofilm covering it as two main food sources. Comparing individuals from other geographic areas from substrates not reported highlights the galatheid crab as specialist of refractory substrates, especially vegetal remains. M. andamanica also exhibits a resident gut microflora consisting of bacteria and fungi possibly involved in the digestion of wood fragments. The results suggest that Crustaceans could be full-fledged actors in the food chains of sunken-wood ecosystems and that feeding habits of some squat lobsters could be different than scavenging.

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