Crustacea (Crab)

Chakraborty, S K and Chakravarty, Gurudas and Giri, Sunirmal and Dam Roy, S and George, J P (2005) Crustacea (Crab). CMFRI Special Publication Mangrove ecosystems: A manual for the assessment of biodiversity, 83 . pp. 150-157.

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Abstract

Brachyuran crabs, a bioenergetically significant group constitute one of the most dominant macrobenthic faunal components in all the mangrove ecosystems of the world. Several species of commercially important crabs like - Scylla serrata occur in mangroves. Brachyuran crabs play significant role to maintain the steady state condition of mangrove ecosystems several ways. The feedig activities of detritivore crabs such as - Uca, Macrophthalmus, Dotilla, Sesarma etc. help in the degradation of organic matter, especially mangrove litters and decaying woods. They also influence the functioning of mangrove ecosystems as burrowers since their repeated burrowing and reburrowing activities enhance the soil aeration, mixing of different soil profiles, nutrient cycling, maintaining of fluidity etc. (Montague, 1980, 1982 ; Bertness, 1985). Furthermore, crabs create a wide variety of bioturbation structures which are very significant for trapping sediments and mangrove seeds (Choudhury and Choudhury, 1994). In India several taxonomic works on estuarine and mangrove brachyuran crabs have been done (Chakraborty et al.,1986; Mandal and Nandi, 1989; Chakraborty and Choudhury, 1992; Dev Roy and Das, 2000 etc.). A total of 55 species of brachyuran crabs under 31 genera have been reported earlier from the mangrove habitats of India (Dev Roy and Das, 2000). Eighteen species of brachyuran crabs under 9 genera and 4 families were identified from Sundarbans Mangrove Ecosystems (Chakraborty and Choudhury, 1992).

Item Type:Article
Uncontrolled Keywords:Crustacea; Crab; Mangrove
Subjects:Marine Ecosystems > Mangroves
Crustacean Fisheries > Crabs
Divisions:CMFRI-Cochin > Fishery Environment
ID Code:4023
Deposited By:Arun Surendran
Deposited On:04 Oct 2010 12:49
Last Modified:04 Oct 2010 12:49

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