A field guide to Kenyan mangroves

species list


Selatium elongatum (H. Milne Edwards, 1869)

Family: Sesarmidae

Zone: Extreme seaward side of mangal, prefers R. mucronata (Vannini et al., 1997; Cannicci et al., 1999).

Habitat: A narrow zone, above water, on the trunk of seaward mangrove trees; strictly mangrove dependent (Cannicci et al., 1999).

Food: Algae and leaves, but is an opportunistic omnivore and includes insects and mollusks in its diet (Cannicci et al., 1999; Dahdouh-Guebas et al., 1999).

Ecological notes: Remains out of water; most active at high tide; remains on trees (Vannini et al., 1997; Cannicci et al., 1999).

Distinguishing characteristics: Mersus of walking legs broad, with the length twice the width or slightly less. Carapace brownish violet; external claw lighter; legs mottled. (Carapace width about 3 cm).

Geographical range: Somalia, Tanzania, Madagascar, Andamane, Indonesia (Vannini and Valmori, 1981), Kenya.


Cannicci, S., F. Dahdouh-Guebas and L. Montemagno, 1993. "Field Keys for Kenyan Mangrove Crabs." Museo Zoologico "La Specola", Dipartimento di Biologia Animale e Genetica dell'UniversitÓ Degli Studi di Firenze, Via Romana 17, I-50125 Firenze, Italia.

Cannicci, S., S. Fratini and M. Vannini, 1999. Use of time, space and food resources in the mangrove climbing crab Selatium elongatum (Grapsidae : Sesarminae). Marine Biology 135 : 335-339.

Hartnoll, R.G., 1975. "The Grapsidae and Ocypodidae (Decapoda: Brachyura) of Tanzania." J. Zool. Lond. 177:305-328.

Vannini, M. and P. Valmori, 1981. Researchers on the coast of Somalia. The shore and the dune of Sar Uanle. 30. Grapsidae (Decapoda Brachyura). Monitore Zoologico Italiano 6: 57-101.

Vannini, M., A. Oluoch and R.K. Ruwa, 1997. "Tree-climbing decapods of Kenyan mangroves." In Kjerfve, Bj÷rn, Luiz Drude de Lacerdaand El Hadji Salif Diop (eds.). Mangrove ecosystem studies in Latin America and Africa. UNESCO Technical Papers in Marine Science, Paris, France: 325-338.

See more mangrove books

previous speciesnext species

all text and photographs copyright© 2002 David Gillikin and Anouk Verheyden
Created 05 January 2000
; Updated 27-Nov-2005