Researches on the Coast of Somalia. The Shore and the Dune of Sar Uanle

Vannini, Marco; Valmori, P.

doi:10.1080/03749444.1981.10736614

Cited by 19 publications

(8 citation statements)

References 9 publications

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“…A morphological comparison of the collected specimens of Perisesarma from East Africa revealed that two distinct species were indeed present. One of the two forms agreed perfectly with previous descriptions of the mangrove crab P. guttatum (A. Milne Edwards, 1869) (see Crosnier, 1965; Vannini & Valmori, 1981). The other form seemed to be diagnostic in the following characters: a conspicuous blue colour on the lateral and frontal regions of the crab combined with a mottled blue on the otherwise dark carapace and dorsal surfaces of the legs.…”

Section: Resultssupporting

confidence: 88%

“…Bright & Hogue, 1972; Hartnoll, 1975; Micheli, Gherardi & Vannini, 1991; Cannicci et al ., 1996; Ruwa, 1997; Slim et al ., 1997; Dahdouh‐Guebas et al ., 1999; Fratini, Cannicci & Vannini, 2000; Flores, Paula & Dray, 2003). Currently, there is only one species of Perisesarma , P. guttatum , attributed to East Africa (Crosnier, 1965; Hartnoll, 1975; Vannini & Valmori, 1981), whereas there have been 19 species reported within the Indo‐Pacific region as a whole (Davie, 2003). Given the long planktonic phase of East African species of Perisesarma (22–25 days, see Pereyra Lago, 1993), and the presence of strong oceanic currents in the Indian Ocean (cf.…”

Section: Introductionmentioning

confidence: 99%

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Ecology and systematics of mangrove crabs of the genus Perisesarma (Crustacea: Brachyura: Sesarmidae) from East Africa

Gillikin

Schubart

2004

Zoological Journal of the Linnean Society

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East Africa has a reduced mangrove crab species richness when compared to Asian mangroves. To date, only one species of Perisesarma de Man, 1895 has been reported in East Africa, despite more than 30 years of mangrove research in this region. Based on morphology, colour, mtDNA and behaviour, we describe a new species of Perisesarma from Kenya, P. samawati sp. nov. Surprisingly, when comparing molecular data from other species within this genus, P. samawati sp. nov. and the sympatric P. guttatum (A. Milne Edwards, 1869) are not sister species. Some aspects of the ecology of P. guttatum and P. samawati sp. nov. are compared and the differences discussed. Additionally, we compare P. samawati sp. nov. with the ecological literature of a possible sister species P. eumolpe de Man, 1895 from Malaysian mangroves. Our findings suggest that the new species is an ecologically important species in East African mangroves.

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Section: Resultssupporting

confidence: 88%

Section: Introductionmentioning

confidence: 99%

Ecology and systematics of mangrove crabs of the genus Perisesarma (Crustacea: Brachyura: Sesarmidae) from East Africa

Gillikin

Schubart

2004

Zoological Journal of the Linnean Society

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“…Accordingly, the majority of the literature dealing with P. guttatum most likely includes both species (Gillikin & Schubart, 2004). Perisesarma guttatum is endemic to East Africa, occurring from Somalia down to the north coast of South Africa, in Madagascar and in the Red Sea (Vannini & Valmori, 1981).…”

Section: Introductionmentioning

confidence: 99%

Genetic and morphological differentiation of the mangrove crab Perisesarma guttatum (Brachyura: Sesarmidae) along an East African latitudinal gradient

Silva

Mesquita

Paula

2009

Biological Journal of the Linnean Society

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The genetic structure and morphometric differentiation of mangrove crab Perisesarma guttatum populations were examined among shelf connected locations along a latitudinal gradient on the East African coast. Over 2200 specimens were sampled from 23 mangrove sites for geometric morphometrics analysis. Population genetic analyses of mitochondrial cytochrome c oxidase subunit I (COI) DNA sequences were used to evaluate connectivity among populations. A total of 73 haplotypes were detected, and almost no haplotypes were found in common between two highly supported phylogeographic clades: southern Mozambique (Inhaca Island and Maputo Bay) and a northern clade that included north Mozambique, Tanzania and Kenya. These two clades were identified based on the species' populations pairwise genetic differentiation and geographical location. FST values were considerably high between the two clades, indicating the presence of significant population genetic structure between Kenya and South Mozambique. However, each clade was composed of genetically similar populations along the latitudinal gradient, and no significant population structure was found within each clade because the FST values were not significant. The morphometric analysis corroborated the division into two clades (i.e. Inhaca Island/Maputo Bay and northern populations) and also detected less shape variation among populations that were few kilometres apart. The significant spatial genetic structuring between the southern and the northern populations of P. guttatum along the geographic gradient under study, combined with morphological differences, suggests that these populations may be considered as cryptic species.

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“…Since Rathbun (1909) described I. paludicola from Thailand, this species has been reported from Madagascar (Crosnier, 1965), Mozambique (Barnard, 1955, as I. rhizophorae; Kensley, 1981), Tanzania (Hartnoll, 1975), Somalia (Vannini et al, 1981), the Red Sea (Fishelson, 1971), Ethiopia and the Sinai Peninsula (Holthuis, 1977), Karachi (Tirmizi, 1985), Thailand (Rathbun, 1909), New Caledonia , and Kumamoto (Yamaguchi et al, 1976). Since Crosnier (1965) synonymized I. rhizophorae (Barnard, 1955) with I. paludicola, successive authors followed Crosnier (1965) and considered all Ilyograpsus crab to be I. paludicola, until T. Sakai (1983) described I. nodulosus from the Ryukyu Islands.…”

Section: Discussionmentioning

confidence: 96%

A new species of the genus Ilyograpsus, I. vanninii sp. nov. (Brachyura, Grapsidae) from Somalia

Sawada¹,

Hosogi²,

Sakai³

2005

Crustac

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Researches on the Coast of Somalia. The Shore and the Dune of Sar Uanle

Abstract: Colour: body and legs reddish-brown marbled with green. Claws external face red, tips and internal face white. Ecology: exposed rocky shores usually on cliffs. Distribution: Indo-Pacific area and from the Red Sea to Natal on the African coast.

Cited by 19 publications

References 9 publications

Ecology and systematics of mangrove crabs of the genus Perisesarma (Crustacea: Brachyura: Sesarmidae) from East Africa

Ecology and systematics of mangrove crabs of the genus Perisesarma (Crustacea: Brachyura: Sesarmidae) from East Africa

Genetic and morphological differentiation of the mangrove crab Perisesarma guttatum (Brachyura: Sesarmidae) along an East African latitudinal gradient

A new species of the genus Ilyograpsus, I. vanninii sp. nov. (Brachyura, Grapsidae) from Somalia

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