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Distribution and densities of the decapod crab Percnon gibbesi, an invasive Grapsidae, in western Mediterranean waters
Deudero, S.; Frau, A.; Cerda, M.; Hampel, H. (2005). Distribution and densities of the decapod crab Percnon gibbesi, an invasive Grapsidae, in western Mediterranean waters. Mar. Ecol. Prog. Ser. 285: 151-156. dx.doi.org/10.3354/meps285151
In: Marine Ecology Progress Series. Inter-Research: Oldendorf/Luhe. ISSN 0171-8630, more
Peer reviewed article  

Available in  Authors 
    VLIZ: Open Repository 231284 [ OMA ]

Keywords
    Grapsidae MacLeay, 1838 [WoRMS]; Percnon gibbesi (H. Milne Edwards, 1853) [WoRMS]; Marine
Author keywords
    Percnon gibbesi; Grapsidae; Mediterranean; alien species

Authors  Top 
  • Deudero, S.
  • Frau, A.
  • Cerda, M.
  • Hampel, H., more

Abstract
    Density, population structure and spatial distribution of the invasive crab Percnon gibbesi in western Mediterranean waters were investigated. Densities appeared highest within pebble substrates, reaching up to 3 ind. m-2. Modal length was 20 mm carapace length (CL), with the presence of ovigerous females from 18 mm CL. Maximum densities were observed at 1 m depth. There were significant differences in habitat preference toward boulders of variable size with algal cover not higher than 0.5 cm. Although individuals were highly active during the daytime, activity patterns were highest at sunset. Further studies are required on the biology and ecology of this grapsid crab to better understand the reasons for its population growth along Mediterranean coasts and to ascertain the means of colonization.

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