Scientia Marina, Vol 77, No 2 (2013)

Four new species of Pycnophyes (Kinorhyncha: Homalorhagida) from Korea and the East China Sea


https://doi.org/10.3989/scimar.03769.15A

Nuria Sánchez
Department of Zoology and Anthropology (Invertebrate Zoology), Faculty of Biological Sciences, Universidad Complutense de Madrid , Spain

Hyun Soo Rho
Dokdo Research Center, Korea Institute of Ocean Science and Technology , Korea, Republic of

Won Gi Min
Dokdo Research Center, Korea Institute of Ocean Science and Technology , Korea, Republic of

Dongsung Kim
Marine Living Resources Research Department, Korea Institute of Ocean Science and Technology , Korea, Republic of

Martin Vinther Sørensen
Natural History Museum of Denmark, University of Copenhagen , Denmark

Abstract


Four new species of Pycnophyes are described from Korean waters and the East China Sea. Pycnophyes pardosi n. sp. is distinguished from other congeners by the presence of a single paradorsal seta on segments 2-8 and a pair on segment 9, combined with the presence of longitudinal cuticular thickenings on the dorsal and ventral sides of segment 10. Pycnophyes chalgap n. sp. is easily distinguished by the shape of its midsternal plate with the rounded posterior margin, extending beyond and overlapping half of the following segment. Pycnophyes cristatus n. sp. is recognized by its lack of ventromedial setae on segments 3-6 combined with the presence of pointed middorsal processes that turn progressively longer towards the posterior segments from segment 6. The process on segment 10 is conspicuously long, extending beyond the posterior margin of segment 11. Pycnophyes smaug n. sp. is distinguished by its general scarcity of setae which, with the exception of those in lateroventral positions, only appear in laterodorsal positions on segments 2 and 9 and in ventromedial position on segment 9. The description of four additional species brings the total number of valid kinorhynch species around the Korean Peninsula up to 26.

Keywords


biodiversity; meiofauna; Pycnophyidae; morphology; taxonomy; Korean Peninsula

Full Text:


PDF

References


Adrianov AV. 1989. The first report on Kinorhyncha of the Sea of Japan. Zool. Zhurn. 61: 17-27.

Adrianov A.V., Higgins R.P. 1996. Pycnophyes parasanjuanensis, a new kinorhynch (Kinorhyncha: Homalorhagida: Pycnophyidae) from San Juan Island, Washington, USA. Proc. Biol. Soc. Wash. 109: 236-247.

Adrianov A.V., Malakhov V.V. 1999. Cephalorhyncha of the World Ocean. KMK Scientific Press, Moscow, 328 pp. PMid:10050508

Brown R. 1985. Development and taxonomic studies of Sydney Harbour Kinorhyncha. Ph.D. Thesis, Macquarie Univ, 193 pp.

Higgins RP. 1961. Three new homalorhagid kinorhynchs from the San Juan Archipelago, Washington. J. Elisha Mitchell Sci. Soc. 77: 81-88.

Higgins R.P. 1966. Faunistic studies in the Red Sea (In winter, 1961-1962). Part II. Kinorhynchs from area of Al-Ghardaqa. Zool. Jb. Syst. Oekol. Geogr. Tiere. 93: 118-126.

Higgins R.P. 1983. The Atlantic Barrier reef ecosystem at Carrie Bow Cay, Belize, II: Kinorhyncha. Smithson. Contrib. Mar. Sci. 18: 1-131. http://dx.doi.org/10.5479/si.01960768.18.1

Higgins R.P. 1991. Pycnophyes chukchiensis new species. A new homalorhagid kinorhynch from the Arctic Sea Arctic Ocean. Proc. Biol. Soc. Wash. 104: 184-188.

Higgins R.P., Kristensen R.M. 1988. Kinorhyncha from Disko Island, West Greenland. Smithson. Contrib. Zool. 458: 1-56. Higgins R.P., Korczynski R.E. 1989. Two new species of Pycnophyes (Homalorhagida, Kinorhyncha) from the Canadian coast of the Beaufort Sea. Can. J. Zool. 67: 2056-2064. http://dx.doi.org/10.1139/z89-293

Lang K. 1949. Echinoderida. In: Odhner, N.H. (Hrsg.), Further zoological results of the Swedish Antartic Expedition 1901-1903. Vol. IV, No. 2, Norstedt and Söner, Stockholm, pp. 1-22.

Lang K. 1953. Reports of the Lund University Chile Expedition 1948-49, 9: Echinoderida. Kungl. Fysiogr. Sällsk. Lund handl. 49: 1-8.

Lemburg C. 2002. A new kinorhynch Pycnophyes australensis sp. n. (Kinorhyncha: Homalorhagida: Pycnophyidae) from Magnetic Island, Australia. Zool. Anz. 241: 173-189. http://dx.doi.org/10.1078/S0044-5231(04)70072-8

Lundbye H., Rho H.S., Sørensen M.V. 2011. Echinoderes rex n. sp. (Kinorhyncha: Cyclorhagida) – the largest Echinoderes species found so far. Sci. Mar. 75: 41-51. http://dx.doi.org/10.3989/scimar.2011.75n1041

Martorelli S., Higgins R.P. 2004. Kinorhyncha from the stomach of the shrimp Pleoticus muelleri (Bate, 1888) from Comodoro Rivadavia, Argentina. Zool. Anz. 243: 85-98. http://dx.doi.org/10.1016/j.jcz.2004.07.003

Murakami C., Adrianov A., Shirayama Y. 2001. Taxonomic study of the Kinorhyncha in Japan I. Pycnophyes tubuliferus Adrianov, 1989 (Kinorhyncha: Homalorhagida) from Japan. Publ. Seto Mar. Biol. Lab. 39: 113-127.

Neuhaus B. 2012. Kinorhyncha (= Echinodera). In: Schmidt-Rhaesa, A. (ed.), Handbook of Zoology, Gastrotricha, Cycloneuralia and Gnathifera, Volume 1: Nematomorpha, Priapulida, Kinorhyncha, Loricifera. Walter de Gruyter, Berlin, pp. 177-343.

Neuhaus B., Higgins R.P. 2002. Ultrastructure, biology, and phylogenetic relationships of Kinorhyncha. Integ. Comp. Biol. 42: 619-632. http://dx.doi.org/10.1093/icb/42.3.619 PMid:21708758

Reinhard W. 1881. Über Echinoderes und Desmoscolex der Umgegend von Odessa. Zool. Anz. 4: 588-592.

Reimer L. 1963. Zur Verbreitung der Kinorhyncha in der mittleren Ostsee. Zool. Anz. 171: 440-447.

Sánchez N., Pardos F., Herranz M., Benito J. 2011. Pycnophyes dolichurus n. sp. and P. aulacodes n. sp. (Kinorhyncha, Homalorhagida, Pycnophyidae), two new kinorhynchs from Spain with a reevaluation of homalorhagid taxonomic characters. Helgol. Mar. Res. 65: 319-334. http://dx.doi.org/10.1007/s10152-010-0226-z

Sánchez N., Herranz M., Benito J., Pardos F. 2012. Kinorhyncha from the Iberian Peninsula: new data from the first intensive sampling campaigns. Zootaxa. 3402: 24-44.

Sánchez N., Herranz M., Benito J., Pardos F. 2013. Pycnophyes almansae sp. nov. and Pycnophyes lageria sp. nov., two new homalorhagid kinorhynchs (Kinorhyncha, Homalorhagida) from the Iberian Peninsula, with special focus on introvert features. Mar. Biol. Res. doi:10.1080/17451000.2013.793804.

Sørensen M.V., Pardos F. 2008. Kinorhynch systematics and biology - an introduction to the study of kinorhynchs, inclusive identification keys to the genera. Meiofauna Mar. 16: 21-73.

Sørensen M.V., Rho H.S. 2009. Triodontoderes anulap gen. et sp. nov. – A new cyclorhagid kinorhynch genus and species from Micronesia. J. Mar. Biol. Ass. UK 89: 1269-1279. http://dx.doi.org/10.1017/S0025315409000526

Sørensen M.V., Pardos F., Herranz M., Rho H.S., 2010a. New data on the genus Paracentrophyes (Homalorhagida, Kinorhyncha), with the description of a new species from the West Pacific. Open Zool. J. 3: 42-59. http://dx.doi.org/10.2174/1874336601003010042

Sørensen M.V., Rho H.S., Kim D. 2010b. A new species of Condyloderes (Cyclorhagida, Kinorhyncha) from Korea. Zool. Sci. 27: 234-242. http://dx.doi.org/10.2108/zsj.27.234 PMid:20192691

Sørensen MV., Rho H.S., Kim D. 2010c. A new species of the raregenus Sphenoderes (Cyclorhagida, Kinorhyncha), with differential notes on S. indicus Higgins, 1969. Mar. Biol. Res. 6: 472-484. http://dx.doi.org/10.1080/17451000903334702

Sørensen M.V., Herranz M., Rho H.S., Min W., Yamasaki H., Sanchez N., Pardos F. 2012a. On the genus Dracoderes Higgins and Shirayama, 1990 (Kinorhyncha: Cyclorhagida) with a redescription of its type species, D. abei, and a description of a new species from Spain. Mar. Biol. Res. 8: 210-232. http://dx.doi.org/10.1080/17451000.2011.615328

Sørensen M.V., Rho H.S., Min W., Kim D., Chang C.Y. 2012b. An exploration of Echinoderes (Kinorhyncha: Cyclorhagida) in Korean and neighboring waters, with the description of four new species and a redescription of E. tchefouensis Lou, 1934. Zootaxa 3368: 161-196.

Sørensen M.V., Rho H.S., Min W., Kim D., Chang C.Y. (in press). Occurrence of the newly described kinorhynch genus Meristoderes (Cyclorhagida: Echinoderidae) in Korea, with the description of four new species. Helgol. Mar. Res.

Yamasaki H., Kajihara H., Mawatari S.F. 2012. First report of kinorhynchs from Hokkaido, Japan, including a new species of Pycnophyes (Pycnophyidae: Homalorhagida). Zootaxa 3425: 23-41.

Zelinka C. 1928. Monographie der Echinodera. Engelmann, Leipzig, 396 pp.




Copyright (c) 2013 Consejo Superior de Investigaciones Científicas (CSIC)

Creative Commons License
This work is licensed under a Creative Commons Attribution 4.0 International License.


Contact us scimar@icm.csic.es

Technical support soporte.tecnico.revistas@csic.es