Parthenogenetic Alien Crayfish (Decapoda: cambaridae) Spreading in Madagascar

Tadashi Kawai; Gerhard Scholtz; Shinsuke Morioka; Fihaonantsoa Ramanamandimby; Chris Lukhaup; Yukio Hanamura

doi:10.1651/08-3125.1

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Tadashi Kawai,^1,* Gerhard Scholtz,² Shinsuke Morioka,³ Fihaonantsoa Ramanamandimby,⁴ Chris Lukhaup,⁵ Yukio Hanamura³

¹aHokkaido Wakkanai Fisheries Experimental Station, 4-5-15 Suehiro, Wakkanai, Hokkaido 097-0001, Japa
²bHumboldt-Universität zu Berlin, Institut für Biologie/Vergleichende Zoologie, Philippstr. 13, 10115
³cJapan International Research Centre for Agricultural Sciences, Owashi 1-1, Tsukuba 305-8686, Japan
⁴dHafakeyly, Lot 177 bis cite des 67ha sud, Antananarivo 101, Madagascar
⁵eGotenstr. 16, 71336 Bittenfeld, Germany

^*(TK, correspondence, kawaita@fishexp.pref.hokkaido.jp)

Abstract

Invasion of an alien freshwater crayfish is newly confirmed in Madagascar. The invasive crayfish is determined as the parthenogenetic Marmorkrebs (marbled crayfish) (Cambaridae: Decapoda) on the basis of morphological features and the fact that all collected specimens were females regardless of their size. As this is a worrisome finding, the public should be alerted so that spread on the island can be prevented before it affects the vulnerable native crayfish biodiversity and the rice field business in Madagascar.

Citation Download Citation

Tadashi Kawai, Gerhard Scholtz, Shinsuke Morioka, Fihaonantsoa Ramanamandimby, Chris Lukhaup, and Yukio Hanamura "Parthenogenetic Alien Crayfish (Decapoda: cambaridae) Spreading in Madagascar," Journal of Crustacean Biology 29(4), 562-567, (1 November 2009). https://doi.org/10.1651/08-3125.1

Received: 20 November 2008; Accepted: 1 March 2009; Published: 1 November 2009