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Use of time, space and food resources in the mangrove climbing crab Selatium elongatum (Grapsidae: Sesarminae)
Cannicci, S.; Fratini, S.; Vannini, M. (1999). Use of time, space and food resources in the mangrove climbing crab Selatium elongatum (Grapsidae: Sesarminae). Mar. Biol. (Berl.) 135(2): 335-339. dx.doi.org/10.1007/s002270050631
In: Marine Biology. Springer: Heidelberg; Berlin. ISSN 0025-3162; e-ISSN 1432-1793, more
Peer reviewed article  

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Keywords
    Mangroves
    Resources > Natural resources > Food resources
    Selatium elongatum (A. Milne-Edwards, 1869) [WoRMS]
    ISW, Kenya, Mida Creek [Marine Regions]
    Marine

Authors  Top 
  • Cannicci, S., more
  • Fratini, S.
  • Vannini, M., more

Abstract
    The activity patterns and use of space of the mangrove dweller Selatium elongatum were studied in the field, in combination with gut content analyses for evaluation of the crab's natural diet. This sesarmine crab proves to be one of the most adapted to climbing and living on mangroves. Moreover, S. elongatum showed a strong preference for being active at high tide, both during the day and night, always along the trunks a few centimetres above the water level, feeding on floating algae and mangrove leaves. Larger males were always recorded within activity areas into which they allow females and smaller males but exclude males of the same size, which probably compete for females. These results confirm that, in spite of the homogeneous herbivorous diet, little niche overlap exists among the several sesarmine crabs inhabiting the East African mangroves, all being leaf consumers segregated on the basis of their horizontal and vertical zonation, and/or of their activity rhythm.

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