Open Access Open Access  Restricted Access Subscription or Fee Access


Ostracods (Crustacea: Ostracoda) from the floodplain of the Chi River, Mahasarakham Province, Northeast Thailand, with the first record of male Tanycypris siamensis Savatenalinton & Martens, 2009



The species diversity of ostracods in the floodplain of the Chi River basin, Mahasarakham Province, Northeast Thailand was examined in this study. Twenty-two samples were collected in the cool season (February 2010). Twenty-six species belonging to 18 genera were recorded, three of which are new to the Oriental region (Fabaeformiscandona subacuta (Yang, 1982), Ilyocypris monstrifica (Norman, 1862) and Limnocythere stationis Vávra, 1891) and one (Hemicypris ovata Sars, 1903) is a new record for Thailand. The most common species were Strandesia kraepelini (G.W. Müller, 1906) and Physocypria crenulata (Sars, 1903) occurring in 77% and 64% of the sampled localities, respectively. Additionally, males of Tanycypris siamensis Savatenalinton & Martens, 2009 were found and are here described for the first time. This discovery shows that the morphology of the hemipenis and of the Zenker organs of T. siamensis is similar to that of species in the genus Cypricercus. Additional comments on chorology and ecology of several taxa are also given.



Ostracoda, Tanycypris, floodplain, Chi River, Thailand

Full Text:

PDF/A (6.52 MB)


Altınsaçlı, S. (2001) The Ostracoda (Crustacea) Fauna of Lakes Erikli, Hamam, Mert, Pedina and Saka (Iğneada, Kırklareli, Turkey). Turkish Journal of Zoology, 25, 343–355.

Broodbakker, N.W. & Danielopol, D.L. (1982) The chaetotaxy of Cypridacea (Crustacea, Ostracoda) limbs: proposals for a descriptive model. Bijdragen tot de Dierkunde, 52 (2), 103–120.

Chang, C.Y., Lee, J. & Smith, R. (2012) Nonmarine ostracods (Crustacea) from South Korea, including a description of a new species of Tanycypris Triebel (Cyprididae, Cypricercinae). Zootaxa, 3161, 1–19.

Escrivà, A., Smith, R.J., Aguilar-Alberola, J.A., Kamiya, T., Karanovic, I., Rueda J., Schornikov, E.I. & Mesquita-Joanes, F. (2012) Global distribution of Fabaeformiscandona subacuta: an exotic invasive Ostracoda on the Iberian Peninsula? Journal of Crustacean Biology, 32, 949–961.

Higuti, J., Declerck, S.A.J., Lansac-Tôha, F.A., Velho, L.F.M. & Martens, K. (2010) Variation in ostracods (Crustacea, Ostracoda) communities in the alluvial valley of the upper Paraná River (Brazil) in relation to substrate. Hydrobiologia, 644, 261–278.

Horne, D.J. & Martens, K. (1999) Geographical parthenogenesis in European non-marine ostracods: post-glacial invasion or Holocene stability? Hydrobiologia, 391, 1–7.

Hou, Y.T., Chen, T.C., Yang, H.G., Ho, J.D., Zhou, Q.C. & Tian, M.Q. (1982) Cretaceous-Quaternary Ostracode Fauna from Jiangsu. Geological Publishing House, Pekin. [in Chinese]

Kiss, A. & Schöll, K. (2009) Checklist of the Crustacea (Cladocera, Ostracoda, Copepoda) fauna in the active floodplain area of the Danube (1843-1806, 1669 and 14437-1489 rkm). Opuscula Zoologica (Budapest), 40, 27–39.

Martens, K. (1987) Homology and functional morphology of the sexual dimorphism in the antenna of Sclerocypris Sars, 1924 (Crustacea, Ostracoda, Megalocypridinae). Bijdragen tot de Dierkunde, 57 (2), 183–190.

Martens, K. & Savatenalinton, S. (2011) A subjective checklist of the recent, free-living, non-marine Ostracoda (Crustacea). Zootaxa, 2855, 1–79.

Martens, K., Schön, I., Meisch, C. & Horne, D.J. (2008) Global biodiversity of non-marine Ostracoda (Crustacea). In: Balian, E., Lévêque, C., Segers, H. & Martens, K. (Eds.), Freshwater animal diversity assessment. Hydrobiologia, 595, 185–193.

Meisch, C. (1988) Ostracodes récoltés à Paris. Avec une clef pour la détermination des espèces européennes du genre Ilyocypris (Crustacea, Ostracoda). Bulletin de la Société des Naturalistes luxembourgeois, 88, 145–163.

Meisch, C. (2000) Freshwater Ostracoda of Western and Central Europe. In: Schwoerbel, J. & Zwick, P. (Eds.), Süßwasserfauna von Mitteleuropa 8(3). Spektrum Akademischer Verlag, Heidelberg, Berlin, pp. 1−522.

Rossetti, G., Bartoli, M. & Martens, K. (2004) Limnological characteristics and recent ostracods (Crustacea, Ostracoda) of freshwater wetlands in the Parco Oglio Sud (Northern Italy). International Journal of Limnology, 40, 329–341.

Rossetti, G., Martens, K., Meisch, C., Tavernelli, S. & Pieri, V. (2006) Small is beautiful: diversity of freshwater ostracods (Crustacea, Ostracoda) in marginal habitats of the province of Parma (Northern Italy). Journal of Limnology, 65, 121–131.

Sars, G.O. (1903) Freshwater Entomostraca from China and Sumatra. Archiv for Mathematik og Naturvidenskab, 25, 1–44.

Savatenalinton, S. (2010) Species diversity and distribution of non-marine ostracods (Ostracoda: Crustacea) in Mahasarakham and Roi-et provinces, Thailand. Research report, Faculty of Science, Mahasarakham University, Thailand, 29 pp. [in Thai with English abstract]

Savatenalinton, S. (2012) Diversity and distribution of non-marine ostracods (Ostracoda, Crustacea) in Udon Thani, Nong Bua Lam Phu, Loei and Nong Khai provinces, Thailand. Research report, Mahasarakham University, Thailand, 26 pp. [in Thai with English abstract]

Savatenalinton, S. (2013) Species diversity and distribution of non-marine ostracods (Ostracoda, Crustacea) in Sakon Nakhon, Nakhon Phanom and Mukdahan provinces, Thailand. Research report, Mahasarakham University, Thailand, 25 pp. [in Thai with English abstract]

Savatenalinton, S., Borgonie, G. & Martens, K. (2008) On Thaicythere srisumonae n. gen., n. sp. (Ostracoda) from Thailand, with notes on the phylogeny of the subfamily Timiriaseviinae Mandelstam, 1960. Crustaceana, 81, 411–432.

Savatenalinton, S. & Martens, K. (2008) Redescription of Hemicypris mizunoi Okubo, 1990 (Crustacea, Ostracoda) from Thailand, with a reassessment of the validity of the genera Hemicypris and Heterocypris. Bulletin van het Koninklijk Belgisch Instituut voor Natuurwetenschappen, Biologie, 78, 17–27.

Savatenalinton, S. & Martens, K. (2009a) Redescription of the type species of Strandesia (Stuhlmann, 1888) and Cypricercus Sars, 1895 (Crustacea, Ostracoda, Cypricercinae), with a description of a new species of Cypricercus from South Africa. Zootaxa, 2007, 1–42.

Savatenalinton, S. & Martens, K. (2009b) On a freshwater species of the genus Sanyuania Zhao and Han, 1980 (Crustacea, Ostracoda, Loxoconchidae) from Thailand, with a discussion on morphological evolution of the freshwater Loxoconchidae. Journal of Natural History, 43, 259–285.

Savatenalinton, S. & Martens, K. (2009c) Generic revision of Cypricercinae McKenzie, 1971 (Crustacea, Ostracoda), with the description of three new genera and one new species and a phylogenetic analysis of the subfamily. Hydrobiologia, 632, 1–48.

Savatenalinton, S. & Martens, K. (2010) On the subfamily Cypricercinae McKenzie, 1971 (Crustacea, Ostracoda) from Thailand, with the description of six new species. Zootaxa, 2379, 1–77.

Smith, R.J. & Janz, H. (2008) Recent species of the Family Candonidae (Ostracoda, Crustacea) from the ancient Lake Biwa, Central Japan. Journal of Natural History, 42, 2865–2922.

Smith, R.J. & Janz, H. (2009) Recent Ostracods of the Superfamilies Cytheroidea and Darwinuloidea (Crustacea) from Lake Biwa, a Japanese Ancient Lake. Species Diversity, 14, 217–241.

Smith, R.J. & Kamiya, T. (2007) Copulatory behaviour and sexual morphology of three Fabaeformiscandona Krstic, 1972 (Candoninae, Ostracoda, Crustacea) species from Japan, including descriptions of two new species. Hydrobiologia, 585, 225–248.

Victor, R. & Fernando, C.H. (1981) Freshwater ostracods (Crustacea: Ostracoda) of the subfamily Cyprinotinae Bronstein, 1947 from Malaysia, Indonesia and the Philippines. Hydrobiologia, 83, 11–27.


  • There are currently no refbacks.

ISSN 1175-5326 (Print Edition) & ISSN 1175-5334 (Online Edition)
Published by Magnolia Press, Auckland, New Zealand
A founding journal of Biotaxa