Wiesenweg 1

Rum, Austria

Wiesenweg 1

Rum, Austria
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De Mazancourt V.,Musum National DHistoire Naturelle | Marquet G.,Musum National DHistoire Naturelle | Klotz W.,Wiesenweg 1 | Keith P.,Musum National DHistoire Naturelle | And 2 more authors.
Invertebrate Systematics | Year: 2017

The taxonomy of the freshwater shrimps Caridina (Atyidae) is very complex and confused mostly because the morphological characters that have traditionally been used for species delimitation and identification are highly plastic. There is thus a need for an integrative approach to their taxonomy. In total, 42 specimens belonging to either Caridina buehleri Roux, 1934 or Caridina gueryi Marquet, Keith & Kalfatak, 2009 were examined. We combined here morphological data from 12 specimens from the whole distributional range of the species, including type specimens with 16S mtDNA analyses from seven freshly sampled specimens, to verify the specific status of Caridina buehleri from Papua New-Guinea, Central Sulawesi, Western Samoa and the Solomon Islands, and C. gueryi from Vanuatu. The comparison of 24 morphological characters showed that morphological variations of character traits between C. gueryi and C. buehleri are widely overlapping and that no morphological feature can effectively split specimens into two clear groups. Molecular characters corroborated these results, as specimens from both groups were only separated by a 2% p-distance, a genetic distance that is coherent with their potentially high dispersal abilities. We thus consider C. gueryi as a junior synonym of C. buehleri. Finally, C. buehleri is characterised mainly by a styliform and characteristically indented rostrum and a long stylocerite. Detailed re-descriptions of the type specimens of C. buehleri and C. gueryi are given, as well as their geographical and ecological distribution. © CSIRO 2017.

Klotz W.,National Museum of Marine Biology and Aquarium | Klotz W.,National Dong Hwa University | Han C.C.,Wiesenweg 1
Crustaceana | Year: 2015

Filter-feeding shrimp with distinctive live colorations were collected from small streams draining to the east coast of Taiwan and from Panay Island, Philippines. Morphological examination revealed that these specimens belong to the genus Australatya, Chace, 1983. In this paper the species is proposed as new to science and described in detail as Australatya obscura, new species. Beside the striking banded live coloration, the new species could be differentiated from Australatya striolata (McCulloch & McNeill, 1923) by a smaller body size, the length of the rostrum, the shape of the pterygostomial margin of the carapace, a row of plumose setae on the outer margin of pereiopods 3-5 and biunguiculated dactyli of the fifth pereiopod. The separation of the genus Australatya from Atyopsis Chace, 1983 and Atyoida Randall, 1840 is confirmed and a revised diagnosis for Australatya is given. © 2015 Koninklijke Brill NV, Leiden.

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.

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).

Karge A.,Blumenthaler Landstr. 19 | Page T.J.,Griffith University | Klotz W.,Wiesenweg 1
Zootaxa | Year: 2013

The atyid genus Micratya Bouvier, 1913 was previously considered to be monotypic. The area in which the genus is distributed is limited to the islands of the Antilles and Central America, with the type locality of Micratya poeyi being in Cuba. A recent molecular phylogenetic analysis of atyid shrimps from the Caribbean indicated the probable existence of a second species of Micratya from samples collected in Puerto Rico. Here it is described as the new species Micratya cooki sp. nov., differing from its congener in the armature of the dactyli on the fifth pereiopod, the uropodal diaeresis, the distal margin of the telson and by the spinulation of the appendix masculina in male specimens. Because the type specimens of M. poeyi are most probably lost, a neotype for M. poeyi was designated. Copyright © 2013 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.

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.

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