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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
agricultural and biological sciences
The perfect invader: A parthenogenic crayfish poses a new threat to Madagascar's freshwater biodiversity
Biological Invasions, Volume 11, No. 6, Year 2009
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Description
In 2007 an unusual crayfish found in food markets in the capital of Madagascar was preliminarily identified as Procambarus 'Marmorkrebs': a new world taxa and the only decapod known to reproduce by parthenogenesis. We present information on the identity, distribution and ecology of this recent invader and attempt to evaluate the threat it poses to Madagascar's biodiversity and to livelihoods. The species appears to be currently limited to the area close to Antananarivo, but is being sold alive on major transport routes. We present molecular evidence of its taxonomic relationships and confirm that the Procambarus present in Madagascar is indeed the parthenogenic taxa. We investigate its reproductive ecology and find Procambarus 'Marmorkrebs' to have an extremely high fecundity; more than six times that of the native crayfish Astacoides. The limited evidence we have suggests that this species poses a serious threat to freshwater biodiversity and that it is likely to damage human livelihoods (through its impact on fishing and possibly rice agriculture). More research is urgently needed but in the meantime action is needed to reduce the rate of spread before it is too late. © 2008 Springer Science+Business Media B.V.
Authors & Co-Authors
Jones, Julia Patricia Gordon
United Kingdom, Bangor
Bangor University
Rasamy, Jeanne R.
Madagascar, Antananarivo
Université D'antananarivo
Harvey, A.
United Kingdom, Peterborough
Royal Haskoningdhv, United Kingdom
Toon, Alicia
United States, Provo
Brigham Young University
Oidtmann, Birgit
United Kingdom, Weymouth
Centre for Environment
Randrianarison, Michele H.
Madagascar, Antananarivo
Université D'antananarivo
Raminosoa, Noromalala Rasoamampionona
Madagascar, Antananarivo
Université D'antananarivo
Ravoahangimalala, Olga Ramilijaona
Madagascar, Antananarivo
Université D'antananarivo
Statistics
Citations: 163
Authors: 8
Affiliations: 5
Identifiers
Doi:
10.1007/s10530-008-9334-y
ISSN:
13873547
Research Areas
Food Security
Sexual And Reproductive Health
Study Locations
Madagascar