OSTRACOD RESEARCH

at the Lake Biwa Museum, Japan


Robin James Smith

Genus Dolerocypria Tressler, 1937

Superfamily: Cypridoidea Baird, 1845
Family: Candonidae Kaufmann, 1900
Subfamily: Paracypridinae Sars, 1923

One species has been reported from Japan:

1. Dolerocypria mukaishimensis Okubo, 1980


Left side view of a male Dolerocypria mukaishimensis, length about 0.65 mm.



External view of a left valve of a male of Dolerocypria mukaishimensis, length 665 microns.



External view of a right valve of a male of Dolerocypria mukaishimensis, length 649 microns.



The male sexual organ of Dolerocypria mukaishimensis, length 148 microns.


Additional figures in: Okubo 1980 (carapace and appendages), Nakao & Tsukagoshi 2002 (carapace and appendages), Smith & Kamiya 2003 (carapace), Karanovic & Lee 2012 (carapace and appendages).
Habitat: Typically a brackish water species, but occasionally found in freshwater habitats along coasts (e.g. freshwater rock pools above the foreshore).
Mode of life: Nektobenthic (swimmer).
Reproductive mode: Sexual.
Known distribution: Seto Inland Sea (Okubo 1980), Eastern Hokkaido (Hiruta & Smith 2001), Chiba Prefecture (Nakao & Tsukagoshi 2002), Okayama Prefecture (Smith & Kamiya 2003), Yakushima Island, Kagoshima Prefecture (Smith & Kamiya 2006). Elsewhere, reported from Korea (Lee et al. 2000; Chang et al. 2012; Karanovic & Lee 2012) and China (Dai et al. 1995).

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

Dia, Z., Ren, C., Zhao, Q., Wang, P. & Yang, F. 1995. Quantitative micro-PIXE and micro-probe analysis of ostracode shells to reconstruct the paleoenvironment. Nuclear Instruments and Methods in Physics Research B, 104, 619-624.

Karanovic, I. & Lee, W. 2012. A review of candonid ostracods (Crustacea: Ostracoda: Podocopida) from East Asia, with descriptions of five new species from South Korea. Zootaxa, 3368, 7-49.

Lee, E., Huh, M. & Schornikov, E. I. 2000. Ostracod fauna from the East Sea coast of Korea and their distribution - preliminary study on Ostracoda as an indicator of water pollution. Journal of the Geological Society of Korea, 36, 435-472. [In Korean with English abstract.]

Nakao, Y. & Tsukagoshi, T. 2002. Brackish-water Ostracoda (Crustacea) from the Obitsu River Estuary, Central Japan. Species Diversity, 7, 67-115.

Okubo, I. 1980. Three new species of the family Candonidae (Ostracoda) from the Inland Sea of Japan. Proceedings of the Japanese Society of Systematic Zoology, 18, 18-27.

Smith, R. J. & Kamiya, T. 2003. Three brackish water ostracods (Crustacea) from Okayama Prefecture, Japan. Species Diversity, 8, 79-91.

Smith, R. J. & Kamiya, T. 2006. Six new species of fresh and brackish water ostracods (Crustacea) from Yakushima, Southern Japan. Hydrobiologia, 559, 331 - 355.