Craspedacusta Lankester 1880
Creators
Description
Genus Craspedacusta Lankester, 1880
Craspedacusta Lankester, 1880: 147.
Type species. Craspedacusta sowerbii Lankester, 1880, by monotypy.
Diagnosis. Olindiid polyps solitary or primitively colonial. Hydranths atentaculate, athecate, club-shaped to cylindrical; distal end a knob-shaped capitulum, bearing an apical mouth surrounded by nematocysts; hydranth base with attachment region surrounded by thin perisarc; asexual reproduction by frustulation, cyst formation, or fission.
Gonophores medusae, arising from gastric column of hydranth. Medusae hemispherical to dome-shaped, with marginal nematocyst ring; radial canals four; centripetal canals absent; manubrium quadrate, moderately short, gastric peduncle absent; tentacles evenly spaced, of one type, lacking adhesive disks; statocysts in vesicles on velum; gonads sac-shaped, on radial canals.
Remarks. Bouillon et al. (2006) listed eight nominal species in Craspedacusta Lankester, 1880, but speculated that they might all be conspecific with C. sowerbii Lankester, 1880. Earlier, He et al. (2000) had recognized six species, while Dumont (1994) reported that four species were considered valid by most workers. Jankowski (2001) and Jankowski et al. (2008) believed there were as many as four species endemic to the Yangtze River Basin in China, the likely origin of the genus. Several species of the genus appear valid from molecular data (Collins et al. 2008; Zhang et al. 2009). The species taxonomy of this enigmatic fresh water genus remains unsettled.
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Linked records
Additional details
Identifiers
Related works
- Is part of
- Journal article: 10.11646/zootaxa.2590.1.1 (DOI)
- Journal article: http://zenodo.org/record/10834110 (URL)
- Journal article: http://publication.plazi.org/id/FFDB075DFFFEFFCFDC68FFAB70124F23 (URL)
- Is source of
- https://sibils.text-analytics.ch/search/collections/plazi/03E27F25FFB6FF86DCFFFA7171AA4E81 (URL)
Biodiversity
- Family
- Olindiidae
- Genus
- Craspedacusta
- Kingdom
- Animalia
- Order
- Limnomedusae
- Phylum
- Cnidaria
- Scientific name authorship
- Lankester
- Taxon rank
- genus
- Taxonomic concept label
- Craspedacusta Lankester, 1880 sec. Calder, 2010
References
- Lankester, E. R. (1880) On a new jelly-fish of the order Trachomedusae, living in fresh water. Nature, 22, 147 - 148.
- Bouillon, J., Gravili, C., Pages, F., Gili, J. - M. & Boero, F. (2006) An introduction to Hydrozoa. Memoires du Museum National d'Histoire Naturelle, 194, 591 pp.
- He, Z. W., Xu, R. H. & Nie, S. M. (2000) A new species of freshwater medusa from Yunnan (Limnomedusae: Olindiadae). Acta Zootaxonomica Sinica, 25, 139 - 142.
- Dumont, H. J. (1994) The distribution and ecology of the fresh- and brackish-water medusae of the world. Hydrobiologia, 272, 1 - 12.
- Jankowski, T. (2001) The freshwater medusae of the world - a taxonomic and systematic literature study with some remarks on other inland water jellyfish. Hydrobiologia, 462, 91 - 113.
- Jankowski, T., Collins, A. G. & Campbell, R. (2008) Global diversity of inland water cnidarians. Hydrobiologia, 595, 35 - 40.
- Collins, A. G., Bentlage, B., Lindner, A., Lindsay, D., Haddock, S. H. D., Jarms, G., Norenberg, J. L., Jankowski, T. & Cartwright, P. (2008) Phylogenetics of Trachylina (Cnidaria: Hydrozoa) with new insights on the evolution of some problematical taxa. Journal of the Marine Biological Association of the United Kingdom, 88, 1673 - 1685.
- Zhang, L. Q., Wang, G. T., Yao, W. J., Li, W. X. & Gao, Q. (2009) Molecular systematics of medusae in the genus Craspedacusta (Cnidaria: Hydrozoa: Limnomedusae) in China with the reference to the identity of species. Journal of Plankton Research, 31, 563 - 570.