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Klotz W.,Wiesenweg 1 | Miesen F.W.,Zoologisches Forschungsmuseum Alexander Koenig | Hullen S.,Zoologisches Forschungsmuseum Alexander Koenig | Herder F.,Zoologisches Forschungsmuseum Alexander Koenig
Aquatic Invasions | Year: 2013

The river Erft and its tributary Gillbach in western Germany are thermally polluted, and harbour exotic plant and animal species introduced by aquarium hobbyists. Here, we report for the first time the occurrence of two species of fresh water shrimp, Neocaridina davidi (Bouvier, 1904) and Macrobrachium dayanum (Henderson, 1893), from these heavily modified waters. We briefly discuss their taxonomy and provide characters for distinguishing the species. Due to its dependence on warm waters, it is unlikely that M. dayanum populations will persist permanently beyond the range of the thermal pollution. In contrast, N. davidi is able to tolerate much colder temperature regimes, and might disperse further into the Rhine drainage. Known parasites of N. davidi are however rather specific, and do most likely not pose a threat to native or other introduced crustacean species. © 2013 The Author(s).

Klotz W.,Wiesenweg 1 | Von Rintelen K.,Leibniz Institute For Evolutions Und Biodiversitatsforschung
Zootaxa | Year: 2013

Three atyid shrimp species of the genus Caridina Milne Edwards, 1837, Caridina boehmei n. sp., C. laroeha and C. bu-tonensis n. sp., are described from the Indonesian islands Sulawesi and Buton. Caridina boehmei n. sp. differs from its apparently next congener C. sulawesi Cai & Ng, 2009 by the shape of the spinulation of the male sexual appendages. Caridina laroeha resembles C. mahalona and C. opaensis, but can be distinguished by the length and armature of the ros-trum, the length ratio of segments of the third maxilliped and the number of spinules on the uropodal diaeresis. Caridina butonensis n. sp. resembles to C. boehmei n. sp. and C. opaensis but can be distinguished by its peculiar truncated rostrum and by a more reduced podobranch on the second maxilliped. Copyright © 2013 Magnolia Press.

Klotz W.,Wiesenweg 1 | Von Rintelen T.,Leibniz Institute For Evolutions Und Biodiversitatsforschung
Zootaxa | Year: 2014

Several atyid specimens were collected from hill streams in Guangdong Province, Southern China and Hong Kong during field trips between 2004 and 2013. Some of these species, most of them also sold as ornamental pet shrimp in the international aquarium trade, proved to be new to science by morphological observation and analysis of mtDNA sequences. Three new species, Caridina logemanni n. sp. , Caridina mariae n. sp. and Caridina conghuensis n. sp., all of them members of the so called Caridina serrata species group (Cai & Ng 1999), are described in detail below. Caridina tumida Wang, Liang & Li, 2008 is synonymised with Caridina venusta Wang, Liang & Li, 2008. Caridina meridionalis Wang, Liang & Li, 2008 is moved to the genus Paracaridina Liang, Guo & Tang, 1999 and synonymised with Paracaridina zijinica Liang, 2002. New records for Caridina trifasciata Yam & Cai, 2003 and Caridina serrata Stimpson, 1860 are recorded. All species are compared to their morphologically closest congeners and the phylogenetic relationships between atyid shrimps from Southern China are shown. Copyright © 2014 Magnolia Press.

Castelin M.,French Natural History Museum | Marquet G.,296 rue de Richelieu | Klotz W.,Wiesenweg 1
Zootaxa | Year: 2013

Elephantis, new genus, is established for Caridina natalensis Bouvier, 1925 hitherto known only from South Africa with one male specimen. Recently, three surveys by electric fishing (2004, 2008 and 2010) of some eastern rivers from Madagascar have permitted to discover numerous specimens of this species. Caridina natalensis is different from all other known species of Caridina by its remarkably broad endopod of the male first pleopod, a long clubbed appendix masculina on the male second pleopod reaching beyond distal end of endopod and strong third pereiopods. Therefore a new genus name is proposed for this species. In addition to detailed description of diagnostic morphological characters, molecular sequences obtained from mitochondrial 16S gene are provided for six specimens of this species. These DNA sequences are integrated to the 16S molecular phylogeny of atyid freshwater shrimps recently published by von Rintelen et al. (2012). Elephantis natalensis comb. nov. sequences formed a divergent group supported in maximum likelihood analysis. The availability of DNA samples could be used as reference and integrated in further phylogenetic studies on atyid freshwater shrimps. Copyright © 2013 Magnolia Press.

Karge A.,Magdeburgerstr. 42 | Von Rintelen K.,Humboldt University of Berlin | Klotz W.,Wiesenweg 1
Zootaxa | Year: 2010

Several species of atyid freshwater shrimp are currently known from Papua New Guinea. Here, two new species are described: Caridina buergersi sp. nov. and C. elisabethae sp. nov. In addition, we provide new records for C. demani and C. cognata, originally described from New Guinea by J. Roux (1911) and De Man (1915). Copyright © 2010 Magnolia Press.

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