Özet:

Craspedacusta sowerbii (Hydrozoa, Limnomedusae, Olindiidae) is a freshwater jellyfish, which was discovered in England in 1880. Although thought to originate in South America, it became obvious that the species is native to the Yangtze River system in China. It has spread from China into lakes all over the world. Many different species, variations and sub-species have been described based on morphological characters. Specimens discovered in North America were described as separate species, as morphological differences appeared to be significant compared to European specimens. Even within Europe, differences were assumed to be obvious. Up to this point, three valid species are published; others are considered by various scientists to be true species as well, but mostly are recognized as variations. To obtain further insight into population dynamics of C. sowerbii as well as molecular information on the species itself, sequences of internal transcribed spacers (ITS) and cytochrome oxidase subunit I (COI) have been used to analyze specimens collected in Germany and Austria. These sequences have been compared to sequences published of different Chinese Craspedacusta species and variations. In addition, morphological descriptions were compared. For the COI sequences, we found uniformity throughout the complete set of samples. However, no comparisons could be made, as no data had been published on COI of Chinese specimens. ITS1, 5.8S and ITS2, including partial 18S and 28S, sequences, were almost uniform within the German populations, showing only minor base pair exchanges. However, comparisons to Chinese organisms indicated, that the investigated sequences of C. sowerbii from Germany and Austria are similar, although not identical in morphology, to Craspedacusta sowerbii var. kiatingi from China. Overall our data support the assumption that there are three valid species, with the possibility of C. ziguiensis being a fourth one, and several, morphological quite different sub-species or variations of the freshwater jellyfish C. sowerbii. FRITZ, Gisela B., Martin PFANNKUCHEN, Andy REUNER, Ralph O. SCHILL, and Franz BRÜMMER. 2009. “Craspedacusta Sowerbii, Lankester 1880 – Population Dispersal Analysis Using COI and ITS Sequences”. Journal of Limnology 68 (1):46-52. https://doi.org/10.4081/jlimnol.2009.46. More Citation Formats ACM ACS APA ABNT Chicago Harvard MLA Turabian Vancouver Download Citation Endnote/Zotero/Mendeley (RIS) BibTeX Downloads Download data is not yet available. Citations List of Cited By : A new contribution of biodiversity of Sapanca lake: Craspedacusta sowerbyi Lankester, 1880 (Cnidaria: Hydrozoa) Reyhan Akçaalan Journal of FisheriesSciences.com : 2011 Thorp and Covich's Freshwater Invertebrates Thomas Jankowski, Boris Anokhin Southward invasion ofCraspedacusta sowerbiiacross mesotrophic lakes in Chile: geographical distribution and genetic diversity of the medusa phase Romina Fuentes, Leyla Cárdenas, Ana Abarzua, Luciano Caputo Freshwater Science : 2019 First record of the freshwater jellyfish Craspedacusta sowerbii Lankester, 1880 in Greece suggests distinct European invasion events Ioannis Karaouzas, Stamatis Zogaris, Manuel Lopes-Lima, Elsa Froufe, Simone Varandas, Amílcar Teixeira, Ronaldo Sousa Limnology : 2015 Mitochondrial Genome of the Freshwater Jellyfish Craspedacusta sowerbyi and Phylogenetics of Medusozoa Hong Zou, Jin Zhang, Wenxiang Li, Shangong Wu, Guitang Wang, Bernd Schierwater PLoS ONE : 2012 Recent occurrence of Olindias muelleri Haeckel, 1879 (Cnidaria, Hydrozoa, Limnomedusae, Olindiidae) in the Aegean Sea Ülgen Aytan, İsmaİl Aksu, Yusuf BektaŞ Plankton and Benthos Research : 2019 Occurrence of two distinct lineages of the freshwater jellyfish Craspedacusta sowerbii (Hydrozoa: Limnomedusae) in Italy Massimo Morpurgo, Peter Schuchert, Samuel Vorhauser, Renate Alber Journal of Limnology : 2020 Reassessment of Morphological Diagnostic Characters and Species Boundaries Requires Taxonomical Changes for the Genus Orthopyxis L. Agassiz, 1862 (Campanulariidae, Hydrozoa) and Some Related Campanulariids Amanda F. Cunha, Gabriel N. Genzano, Antonio C. Marques, Fabiano Thompson PLOS ONE : 2015 Una síntesis de las localidades ibéricas conocidas para Craspedacusta sowerbii Lankester, 1880 (Cnidaria: Hydrozoa): nuevo registro para España procedente de la vega del Guadalquivir J. L. Medina-Gavilán, M. M. González-Duarte Graellsia : 2018 Thorp and Covich's Freshwater Invertebrates Nadine C. Folino-Rorem Variability on microevolutionary and macroevolutionary scales: a review on patterns of morphological variation in Cnidaria Medusozoa Amanda F. Cunha, Maximiliano M. Maronna, Antonio C. Marques Organisms Diversity & Evolution : 2016 Different lineages of freshwater jellyfishes (Cnidaria, Olindiidae, Craspedacusta) invading Europe: another piece of the puzzle from Sicily, Italy Enrico Schifani, Arturo Viviano, Roberto Viviano, Luigi Naselli-Flores, Federico Marrone Limnology : 2019 On the occurrence of freshwater jellyfish in Japan 1928–2011: eighty-three years of records ofmamizu kurage(Limnomedusae, Olindiidae) Cheryl Lewis, Masao Migita, Hiroshi Hashimoto, Allen G. Collins Proceedings of the Biological Society of Washington : 2012 Culturing the freshwater hydromedusa,Craspedacusta sowerbiiunder controlled laboratory conditions Nadine C. Folino-Rorem, Mark Reid, Terry Peard Invertebrate Reproduction & Development : 2016 Freshwater jellyfish in northern temperate lakes: Craspedacusta sowerbii in British Columbia, Canada F Lüskow, PJ López-González, EA Pakhomov Aquatic Biology : 2021 A new record of the freshwater jellyfish Craspedacusta sowerbii Lankester, 1880 (Hydrozoa) in Southeastern Anatolia (Turkey) Aysel Bekleyen, Memet Varol, Bulent Gokot Chinese Journal of Oceanology and Limnology : 2011 La méduse d’eau douce Craspedacusta sowerbii : espèce exotique répandue dans les lacs du Québec Nadia El Moussaoui, Beatrix E. 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Registered in print in Verbania, 7-10-1959, n. 58.

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