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Issue: Vol. 5446 No. 3: 1 May 2024
Type: Article
Published: 2024-05-01
DOI: 10.11646/zootaxa.5446.3.2
Page range: 331-365
Abstract views: 10
PDF downloaded: 0

Taxonomy, ontogeny, and ecology of Tonnacypris stewarti (Daday 1908) comb. nov. (Ostracoda: Cyprididae) from Nam Co, Tibetan Plateau

Institute of Geosystems and Bioindication; Technische Universität Braunschweig; 38106 Braunschweig; Germany
Institute of Geosystems and Bioindication; Technische Universität Braunschweig; 38106 Braunschweig; Germany
Institute of Geosciences; University of Jena; 07749 Jena; Germany
Chair of Organic Biochemistry in Geo-systems; RWTH Aachen University; 52056 Aachen; Germany
Institute of Geosystems and Bioindication; Technische Universität Braunschweig; 38106 Braunschweig; Germany
Institute of Geosystems and Bioindication; Technische Universität Braunschweig; 38106 Braunschweig; Germany
State Key Laboratory of Tibetan Plateau Earth System; Environment and Resources (TPESER); Institute of Tibetan Plateau Research; Chinese Academy of Sciences; Beijing 100101; China
Institute of Geosystems and Bioindication; Technische Universität Braunschweig; 38106 Braunschweig; Germany
Crustacea Eucypridinae female genital lobes ontogenetic stages reproductive strategies synonyms

Abstract

Taxonomic clarification of Tonnacypris stewarti comb. nov. (= Herpetocypris stewarti), a non-marine ostracod first described by Daday in 1908, was required due to the existence of various synonyms without detailed morphological descriptions. Our study examined specimens from Mang-tsa, Nam Co (Tibetan Plateau) and Lake Band-e Amir (Afghanistan). We identified seven definitive synonyms (Herpetocypris stewarti Daday 1908, Ilyodromus estonicus Järvekülg 1960, Eucypris afghanistanensis Hartmann 1964, E. gyirongensis Yang 1982, E. rischtanica Schneider 1963 in Mandelstam & Schneider 1963, Tonnacypris estonica (Järvekülg 1960), and T. gyirongensis (Guo et al. 2016). After a detailed study of the morphology of valves and soft parts supplemented by a literature review, we propose combining the genus Tonnacypris with the specific epithet stewarti, resulting in the new name Tonnacypris stewarti. We documented the ontogenetic series of T. stewarti in surface sediment samples from Nam Co. Only female specimens were found, consistent with observations in Mongolia, where they were considered asexual populations. Sexual populations were reported from Afghanistan and the southern Tibetan Plateau, suggesting geographic parthenogenesis in the Palearctic region. Because of widely missing males, we explored the use of female genital lobes as a distinguishing feature for taxonomy. Considering current ecological knowledge, T. stewarti could serve as a (paleo)—bioindicator of cold, oligotrophic, and fresh to slightly brackish habitats, including rivers, lagoons, and lakes. This study emphasizes the importance of resolving taxonomic issues for future paleolimnological research. Moreover, our investigation highlights the potential use of sclerotized internal female genital lobes as distinctive characteristics for species differentiation, especially in asexual populations.

References

  1. Adolfsson, S., Michalakis, Y., Paczesniak, D., Bode, S.N.S., Butlin, R.K., Lamatsch, D.K., Martins, M.J.F., Schmit, O., Vandekerkhove, J. & Jokela, J. (2010) Evaluation of elevated ploidy and asexual reproduction as alternative explanations for geographic parthenogenesis in Eucypris virens ostracods. Evolution, 64, 986–997. [PMID: 19863586] https://doi.org/10.1111/j.1558-5646.2009.00872.x
  2. Akita, L.G., Frenzel, P. Wang, J., Börner, N. & Peng, P. (2016) Spatial distribution and ecology of the recent Ostracoda from Tangra Yumco and adjacent waters on the southern Tibetan Plateau: a key to palaeoenvironmental reconstruction. Limnologica, 59, 21–43. https://doi.org/10.1016/j.limno.2016.03.005
  3. Anslan, S., Rad, M.A., Buckel, J., Galindo, P.E., Kai, J., Kang, W., Keys, L., Maurischat, P., Nieberding, F., Reinosch, E., Tang, H., Tran, T.V., Wang, Y. & Schwalb, A. (2020) Reviews and syntheses: how do abiotic and biotic processes respond to climatic variations at the Nam Co catchment (Tibetan Plateau)? Biogeosciences, 17 (5), 1261–1279. https://doi.org/10.5194/bg-17-1261-2020
  4. Baird, W. (1843) Notes on British Entomostraca. Zoologist, 1, 193–197.
  5. Baird, W. (1845) Arrangement of the British Entomostraca, with a list of species, particularly noticing those which have as yet been discovered within the bounds of the club. Transactions of the Berwickshire Naturalists’ Club, 2 (13), 145–158.
  6. Baltanás, A., Danielopol, D.L., Roca, J.R. & Marmonier, P. (1993) Psychodromus betharrami n. sp. (Crustacea, Ostracoda): Morphology, ecology and biogeography. Zoologischer Anzeiger, 231, 39–57.
  7. Baltanás, A., Otero, M., Arqueros, L., Rossetti, G. & Rossi, V. (2000) Ontogenetic changes in the carapace shape of the non-marine ostracod Eucypris virens (Jurine). Hydrobiologia, 419, 65–72. https://doi.org/10.1023/A:1003994209369
  8. Boomer, I., Horne, D.J. & Slipper, I.J. (2003) The Use of Ostracods in Palaeoenvironmental Studies, or What can you do with an Ostracod Shell? The Paleontological Society Papers, 9, 153–180. https://doi.org/10.1017/s1089332600002199
  9. Bronstein, Z.S. (1947) Fauna SSSR. Crustacea. 2 (1). Freshwater Ostracoda. Zoologicheskiy Institut Akademii Nauk SSSR, Moskva, Novaya Seria, 31, 1–339. [in Russian]
  10. Broodbakker, N.W. (1982) The Genus Heterocypris (Crustacea, Ostracoda) in the West Indies, Bijdragen tot de Dierkunde, 52 (2), 207–227. https://doi.org/10.1163/26660644-05202012
  11. Broodbakker, N. & Danielopol, D.L. (1982) The chaetotaxy of Cypridacea (Crustacea, Ostracoda) limbs: proposal for a descriptive model. Bijdragen tot de Dierkunde, 52 (2), 103–120. https://doi.org/10.1163/26660644-05202003
  12. Brooks, W.K. (1886) Report on the Stomatopoda dredged by HMS “Challenger” during the years 1873–1876. Report on the scientific results of the voyage of HMS. Challenger Zoology, 16, 1–116. https://doi.org/10.5962/bhl.title.9891
  13. Butlin, R., Schön, I. & Martens, K. (1998) Asexual reproduction in nonmarine ostracods. Heredity, 81, 473–480. https://doi.org/10.1046/j.1365-2540.1998.00454.x
  14. Cohen, A.C. & Morin, J.G. (1990) Patterns of reproduction in Ostracodes: A review. Journal of Crustacean Biology, 10 (2), 184–211. https://doi.org/10.2307/1548480
  15. Daday, E.V. (1908) Entomostraca et Hydrachnidae e Tibet. In: Stewart, F.H., Annandale, N., de Man, J.G., Camerano, L., Daday, E. & Lloyd, R.E., Report on a collection of aquatic animals made in Tibet by Captain F. H. Stewart, I.M.S., during the year 1907. Records of the Indian Museum, 2 (Part IV), pp. 323–341.
  16. Danielopol, D.L. & McKenzie, K.G. (1977) Psychrodromus gen. n. (Crustacea, Ostracoda), with Redescription of the Cypridid Genera Prionocypris and Ilyodromus. Zoologica Scripta, 6, 301–322. https://doi.org/10.1111/j.1463-6409.1978.tb00783.x
  17. Danielopol, D.L., Ito, E., Wangsard, G., Kamiya, T., Cronin, T.M. & Baltanás, A. (2002) Techniques for collection and study of Ostracoda. Geophysical Monograph, 131, 65–97. https://doi.org/10.1029/131GM04
  18. Diebel, K. & Pietrzeniuk, E. (1975) Neue Ostracoden aus dem Pleistozän von Burgtonna (Bezirk Erfurt). Zeitschrift für Geologische Wissenschaften, 3, 87–97. [in German]
  19. Echeverría‐Galindo, P., Anslan, S., Frenzel, P., Künzel, S., Vences, M., Pérez, L. & Schwalb, A. (2021) High‐throughput identification of non‐marine Ostracoda from the Tibetan Plateau: Evaluating the success of various primers on sedimentary DNA samples. Environmental DNA, 3 (5), 982–996. https://doi.org/10.1002/edn3.222
  20. Fernandes Martins, M.J., Vandekerkhove, J. & Namiotko, T. (2008) Environmental stability and the distribution of the sexes: insights from life history experiments with the geographic parthenogen Eucypris virens (Crustacea: Ostracoda). Oikos, 117, 829–836. https://doi.org/10.1111/j.2008.0030-1299.16557.x
  21. Frenzel, P., Wrozyna, C., Xie, M., Zhu, L. & Schwalb, A. (2010) Palaeo-water depth estimation for a 600-years record from Nam Co (Tibet) using an ostracod-based transfer function. Quaternary International, 218, 157–165. https://doi.org/10.1016/j.quaint.2009.06.010
  22. Fürstenberg, S., Frenzel, P., Peng, P., Henkel, K. & Wrozyna, C. (2015) Phenotypical variation in Leucocytherella sinensis Huang, 1982 (Ostracoda): a new proxy for palaeosalinity in Tibetan lakes. Hydrobiologia, 751, 55–72. https://doi.org/10.1007/s10750-014-2171-3
  23. Fuhrmann, R. (2012) Atlas quartärer und rezenter Ostrakoden Mitteldeutschlands. (Atlas of Quaternary and recent ostracods of central Germany) Natural History Museum Mauritianum, Altenburg, 320 pp.
  24. Griffiths, H.I., Pietrzeniuk, E., Fuhrmann, R., Lennon, J.J., Martens, K. & Evans, J.G. (1998) Tonnacypris glacialis (Ostracoda, Cyprididae): taxonomic position, (palaeo-) ecology, and zoogeography. Journal of Biogeography, 25, 515–526. https://doi.org/10.1046/j.1365-2699.1998.2530515.x
  25. Guo, Y., Zhu, L., Frenzel., P., Ma, Q., Ju, J., Peng, P., Wang, J. & Daut, G. (2016) Holocene lake level fluctuations and environmental changes at Taro Co, southwestern Tibet, based on ostracod-inferred water depth reconstruction. The Holocene, 26 (1), 29–43. https://doi.org/10.1177/0959683615596829
  26. Hammer, Ø., Harper, D.A.T. & Ryan, P.D. (2001) Past: Paleontological Statistics Software Package for Education and Data Analysis. Palaeontologia Electronica, 4 (1), Art. 4 (Version 4.03), 1–9.
  27. Hartmann, G. (1964) Asiatische Ostracoden, systematische und zoogeographische Untersuchungen. Internationale Revue der gesamten Hydrobiologie Systematische Beihefte, 3, 1–155.
  28. Horne, D.J. & Martens, K. (1999) Geographical parthenogenesis in European non-marine ostracods: post-glacial invasion or Holocene stability? Hydrobiologia, 391, 1–7.
  29. Horne, D.J. (2005) Homology and homoeomorphy in ostracod limbs. Hydrobiologia, 538, 55–80. https://doi.org/10.1007/s10750-004-4937-5
  30. Hou, Y., Gou, Y. & Chen, D. (2002) Fossil Ostracoda of China. Vol. 1 – Superfamilies Cypridacea and Darwinulidacea. Beijing, Ke xue chu ban she, 1090+317 pp. [in Chinese with English abstract].
  31. Huang, B., Yang, H. & You, K. (1982) Pliocene and Quaternary Ostracoda from southern and southwestern Tibet. In: Tibetan Plateau Synthetic Scientific Investigation Team of the Chinese Academy of Sciences (Ed.), Palaeontology of Tibet. Vol. 4. Science Press, Beijing, pp. 326–348. [in Chinese]
  32. Jacobsen, D. & Dangles, O. (2017) High altitude waters in the face of climate change. Published to Oxford Scholarship Online. https://doi.org/10.1093/oso/9780198736868.001.0001
  33. Järvekülg, A. (1960) A new freshwater ostracod from Estland. Izvestiya Akademii Nauk Estonskoy SSR, seria biologicheskaya, 9 (1), 27–34. [in Russian]
  34. Jurine, L. (1820) Histoire des monocles qui se trouvent aux environs de Geneve. J.J. Paschoud, Genève, XVI + 260 pp. https://doi.org/10.5962/bhl.title.10137
  35. Kai, J., Wang, J., Ju, J., Huang, L., Ma, Q., Daut, G. & Zhu, L. (2020) Spatio-temporal variations of hydrochemistry and modern sedimentation processes in the Nam Co basin, Tibetan Plateau: Implications for carbonate precipitation. Journal of Great Lakes Research, 46, 961–975. https://doi.org/10.1016/j.jglr.2020.04.006
  36. Kang, W., Anslan, S., Börner, N., Schwarz, A., Schmidt, R., Künzel, S., Rioual, P., Echeverría-Galindo, P., Vences, M., Wang, J. & Schwalb, A. (2021) Diatom metabarcoding and microscopic analyses from sediment samples at Lake Nam Co, Tibet: The effect of sample-size and bioinformatics on the identified communities. Ecological Indicators, 121, 107070, https://doi.org/10.1016/j.ecolind.2020.107070
  37. Karanovic, I. (2012) Recent freshwater ostracods of the world. Crustacea, Ostracoda, Podocopida. Springer, Berlin Heidelberg, 608 pp. https://doi.org/10.1007/978-3-642-21810-1
  38. Kotlia, S.B., Hinz-Schallreuter, I., Schallreuter, R. & Schwarz, J. (1998) Evolution of Lamayuru palaeolake in the Trans Himalaya: Palaeoecological implications. E & G Quaternary Science Journal, 48, 177–191. https://doi.org/10.3285/eg.48.1.16
  39. Kramer, M. & Holmes, J. (2009) Taxonomy and palaeoecology of Ostracoda from the middle to late Pleistocene upper Karewa formation Kashmir Valley, Northern India. Journal of Micropalaeontology, 28, 25–36. https://doi.org/10.1144/jm.28.1.25
  40. Külköylüoğlu, O., Sari, N., Akdemir, D., Yavuzatmaca, M. & Altinbağ, C. (2012) Distribution of sexual and asexual Ostracoda (Crustacea) from different altitudinal ranges in the Ordu region of Turkey: Testing the Rapoport rule. High Altitude Medicine & Biology, 13 (2), 126–137. https://doi.org/10.1089/ham.2011.1111
  41. Latreille, P.A. (1802) n.k. In: Histoire naturelle, generale et particulière des crustaces et des insects. Vol. 4. F. Dufart, Paris, pp. 232–254. https://doi.org/10.5962/bhl.title.15764
  42. Li, X., Liu, W., Zhang, L. & Sun, Z. (2010) Distribution of recent ostracod species in the Lake Qinghai area in northwestern China and its ecological significance. Ecological Indicators, 10, 880–890. https://doi.org/10.1016/j.ecolind.2010.01.012
  43. Li, X., Zhai, D., Wang, Q., Wen, R. & Ji, M. (2021) Depth distribution of ostracods in a large fresh-water lake on the Qinghai-Tibet Plateau and its ecological and Palaeolimnological significance. Ecological Indicators, 129, 108019. https://doi.org/10.1016/j.ecolind.2021.108019
  44. Mandelstam, M.I. & Schneider, G.F. (1963) Fossil Ostracoda of the SSSR, Family Cyprididae. Gostoptekh, Leningrad, 242 + 84 pp. [in Russian]
  45. Mao, X., Liu, X., Li, J., Feng, S., Jiang, G. & Liu, L. (2021) Population age structure of ostracods in lake sediment and its implication for within-lake transport of microfossils. Ecological Indicators, 131, 108182. https://doi.org/10.1016/j.ecolind.2021.108182
  46. Mao, X., Liu, X., Feng, S., Li, J., Li, X., Jiang, G. & Liu, L. (2023) Solar activity dominated the multidecadal- to centennial-scale humidity oscillations during the Little Ice Age in arid central Asia. CATENA, 223, 106935. https://doi.org/10.1016/j.catena.2023.106935.
  47. Martens, K., Ortal, R. & Meisch, C. (1992) The ostracod fauna of Mamilla Pool (Jerusalem, Israel) (Crustacea, Ostracoda). Zoology in the Middle East, 7 (1), 95–114. https://doi.org/10.1080/09397140.1992.10637628
  48. Matzke-Karasz, R., Smith, R. & Heß, M. (2017) Removal of extracellular coat from giant sperm in female receptacle induces sperm motility in Mytilocypris mytiloides (Cyprididae, Ostracoda, Crustacea). Cell Tissue Research, 368, 171–186. https://doi.org/10.1007/s00441-016-2507-6
  49. Meisch, C. (2000) Freshwater Ostracoda of Western and Central Europe. Süßwasserfauna von Mitteleuropa 8/3. Spektrum Akademischer Verlag, Heidelberg, Berlin, 522 pp.
  50. Meisch, C., Smith, R.J. & Martens, K. (2019) A Subjective global checklist of the extant non-marine Ostracoda (Crustacea). European Journal of Taxonomy, 492, 1–135. https://doi.org/10.5852/ejt.2019.492
  51. Mischke, S. (2012) Chapter 15—Quaternary Ostracods from the Tibetan Plateau and Their Significance for Environmental and Climate-Change Studies, In: Horne, D.J., Holmes, J.A., Rodriguez-Lazaro, J. & Viehberg, F.A. (Eds.), Developments in Quaternary Sciences. Vol. 17. Elsevier, Amsterdam, pp. 263–279. https://doi.org/10.1016/B978-0-444-53636-5.00015-9
  52. Mischke, S., Herzschuh, U., Kürschner, H., Fuchs, D., Jiawu, Z., Fei, M. & Zhencheng, S. (2003) Sub-recent Ostracoda from Qilian Mountains (NW China) and their ecological significance. Limnologica, 33, 280–292. https://doi.org/10.1016/S0075-9511(03)80023-3
  53. Mischke, S., Herzschuh, U., Sun, Z., Qiao, Z., Sun, N. & Zander, A.M. (2006) Middle Pleistocene Ostracoda from a large freshwater lake in the presently dry Qaidam Basin (NW China). Journal of Micropalaeontology, 25, 57–64. https://doi.org/10.1144/jm.25.1.57
  54. Mischke, S., Bößneck, U., Diekmann, B., Herzschuh, U., Jin, H., Kramer, A., Wünnemann, B. & Zhang, C. (2010a) Quantitative relationship between water-depth and sub-fossil ostracod assemblages in lake Donggi Cona, Qinghai Province, China. Journal of Paleontology, 43, 589–608. https://doi.org/10.1007/s10933-009-9355-2
  55. Mischke, S., Sun, Z., Herzschuh, U., Qiao, Z. & Sun, N. (2010b) An ostracod-inferred large Middle Pleistocene freshwater lake in the presently hyper-arid Qaidam Basin (NW China). Quaternary International, 218, 74–85. https://doi.org/10.1016/j.quaint.2009.03.002
  56. Mischke, S., Zhang, C. & Plessen, B. (2020) Lake Balkhash (Kazakhstan): Recent human impact and natural variability in the last 2900 years. Journal of Great Lakes Research, 46 (2), 267–276. https://doi.org/10.1016/j.jglr.2020.01.008
  57. Pastorino, P. & Prearo, M. (2020) High-mountain lakes, indicators of global change: ecological characterization and environmental pressures. Diversity, 12, 260. https://doi.org/10.3390/d12060260
  58. Peng, J. (1997) Ostracod assemblages and environmental changes during 13 000 and 4 500 a B.P. in Peiku Co, Tibet. Acta Micropalaeontologica Sinica, 14 (3), 239–254. [in Chinese with English abstract]
  59. Peng, P., Zhu, L., Frenzel, P., Wrozyna, C. & Ju, J. (2013) Water depth related ostracod distribution in Lake Pumoyum Co, southern Tibetan Plateau. Quaternary International, 313–314, 47–55. https://doi.org/10.1016/j.quaint.2013.08.054
  60. Peng, P., Zhai, D., Smith, R.J., Wang, Q., Guo, Y. & Zhu, L. (2021) On some modern Ostracoda (Crustacea) from the Tibetan Plateau in SW China, with descriptions of three new species. Zootaxa, 4942 (4), 501–542. https://doi.org/10.11646/zootaxa.4942.4.2
  61. Qiu, J. (2008) China: The third pole. Nature, 454, 393–396. https://doi.org/10.1038/454393a
  62. Ramdohr, P. (1808) Über die Gattung Cypris Müll. und drei zu derselben gehörige neue Arten. Magazin der naturforschenden Freunde in Berlin, Berlin, 2, 83–93. p.3.
  63. Rasouli, H., Scharf, B., Meisch, C. & Aygen, C. (2016) An updated checklist of the Recent non-marine Ostracoda (Crustacea) of Iran, with a redescription of Eucypris mareotica (Fischer, 1855). Zootaxa, 4154 (3), 273–292. https://doi.org/10.11646/zootaxa.4154.3.3
  64. Roessler, W.E. (1983) Estudios taxonómicos, ontogenéticos, ecológicos y etológicos sobre los ostrácodos de agua dulce en Colombia. IV. Desarrollo postembrionario de Heterocypris bogotensis Roessler (Ostracoda, Podocopa, Cyprididae). Caldasia, 13 (65), 755–776.
  65. R Core Team (2022) RStudio: Integrated Development for R. RStudio. PBC, Boston, Massachusetts. Available from: http://www.rstudio.com/ (accessed 2 April 2024)
  66. Sars, G.O. (1866) Oversigt af Norges marine Ostracoder. Forhandlinger I Videnskabs-Selskabet I Christiania, 1865, 1–130.
  67. Savatenalinton, S. & Martens, K. (2009) 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), 1–42. https://doi.org/10.11646/zootaxa.2007.1.1
  68. Savatenalinton, S. & Suttajit, M. (2016) A checklist of Recent non-marine ostracods (Crustacea: Ostracoda) from Thailand, including descriptions of two new species. Zootaxa, 4067 (1), 1–34. https://doi.org/10.11646/zootaxa.4067.1.1
  69. Schmit, O., Adolfsson, S., Vandekerkhove, J., Rueda, J., Bode, S.N.S., Rossetti, G., Michalakis, Y., Jokela, J., Martens, K. & Mesquita-Joanes, F. (2013a) The distribution of sexual reproduction of the geographic parthenogen Eucypris virens (Crustacea: Ostracoda) matches environmental gradients in a temporary lake. Canadian Journal of Zoology, 91 (9), 660–671. https://doi.org/10.1139/cjz-2012-0236
  70. Schmit, O., Bode, S.N.S., Camacho, A., Horne, D.J., Lamatsch, D.K., Martens, K., Martins, M.J.F., Namiotko, T., Rossetti, G., Rueda-Sevilla, J., Schön, I., Vandekerkhove, J. & Mesquita-Joanes, F. (2013b) Linking present environment and the segregation of reproductive modes (geographical parthenogenesis) in Eucypris virens (Crustacea: Ostracoda). Journal of Biogeography, 40, 2396–2408. https://doi.org/10.1111/jbi.12174
  71. Schön, I., Gandolfi, A., Di Masso, E., Rossi, V., Griffiths, H.I., Martens, K. & Butlin, R.K. (2000) Persistence of asexuality through mixed reproduction in Eucypris virens (Crustacea, Ostracoda). Heredity, 84, 161–169. https://doi.org/10.1046/j.1365-2540.2000.00647.x
  72. Schütt, B., Berking, J., Frechen, M., Frenzel, P., Schwalb, A. & Wrozyna, C. (2010) Late Quaternary transition from lacustrine to a fluvio-lacustrine environment in the north-western Nam Co, Tibetan Plateau, China. Quaternary International, 218, 104–117. https://doi.org/10.1016/j.quaint.2009.05.009
  73. Schwalb, A. (2003) Lacustrine ostracodes as stable isotope recorders of late-glacial and Holocene environmental dynamics and climate. D.G. Frey and E.S. Deevey Review #3. Journal of Paleolimnology, 29, 265–351. https://doi.org/10.1023/A:1024038429005
  74. Shukla, U.K., Kotlia, B.S. & Mathur, P.D. (2002) Sedimentation pattern in a trans-Himalayan Quaternary lake at Lamayuru (Ladakh), India. Sedimentary Geology, 148, 405–424. https://doi.org/10.1016/S0037-0738(01)00160-9
  75. Singh, D. (1974) Some new freshwater ostracods from Kashmir, India. Bulletin of the Indian Geological Association, 7, 99–122.
  76. Smith, R.J. & Martens, K. (2000) The ontogeny of the cypridid ostracod Eucypris virens (Jurine, 1820) (Crustacea, Ostracoda). Hydrobiologia, 419, 31–63. https://doi.org/10.1023/A:1003985908460
  77. Sohar, K. & Meidla, T. (2010) Changes in the early Holocene lacustrine environment inferred from the subfossil ostracod record in the Verangu section, northern Estonia. Estonian Journal of Earth Sciences, 59 (3), 195–206. https://doi.org/10.3176/earth.2010.3.02
  78. Sywula, T. (1974) Ostracods (Ostracoda). In: Freshwater fauna of Poland. PWN, Warszawa and Poznań, 24, pp. 1–315. [in Polish]
  79. Tilquin, A. & Kokko, H. (2016) What does the geography of parthenogenesis teach us about sex? Philosophical Transactions of the Royal Society B, 371, 20150538. https://doi.org/10.1098/rstb.2015.0538
  80. Turpen, J.B. & Angell, R.W. (1971) Aspects of molting and calcification in the Ostracod Heterocypris. Biological Bulletin, 140 (2), 331–338. https://doi.org/10.2307/1540077
  81. Van der Meeren, T., Khand, Y. & Martens, K. (2009) On recent species of Tonnacypris Diebel & Pietrzeniuk, 1975 (Crustacea, Ostracoda), with new species descriptions from Mongolia. Zootaxa, 2015 (1), 1–41. https://doi.org/10.11646/zootaxa.2015.1.1
  82. Van der Meeren, T., Almendinger, J.E., Ito, E. & Martens, K. (2010) The ecology of ostracodes (Ostracoda, Crustacea) in western Mongolia. Hydrobiologia, 641, 253–273. https://doi.org/10.1007/s10750-010-0089-y
  83. Vávra, W. (1891) Monographie der Ostracoden Böhmens. Archiv für die naturwissenschaftliche Landesdurchforschung von Böhmen, 8 (3), 1–116. [in German]
  84. Wang, J., Zhu, L., Daut, G., Ju, J., Lin, X., Wang, Y. & Zhen, X. (2009) Investigation of bathymetry and water quality of Lake Nam Co, the largest lake on the central Tibetan Plateau, China. Limnology, 10, 149–158. https://doi.org/10.1007/s10201-009-0266-8
  85. Wang, J., Huang, L., Ju, J., Daut, G., Ma, Q., Zhu, L., Haberzettl, T., Baade, J., Mäusbacher, R., Hamilton, A., Graves, K., Olsthoorn, J. & Laval, B.E. (2020) Seasonal stratification of a deep, high-altitude, dimictic lake: Nam Co, Tibetan Plateau. Journal of Hydrology, 584, 124668. https://doi.org/10.1016/j.jhydrol.2020.124668
  86. Wang, C., Wang, H., Kuang, X. & Guo, G. (2021) Life stages and morphological variations of Limnocythere inopinata (Crustacea, Ostracoda) from Lake Jiang-Co (northern Tibet): a bioculture experiment. ZooKeys, 1011, 25–40. https://doi.org/10.3897/zookeys.1011.56065
  87. Wang, C., Kuang, X., Shan, J., Zhang, Q., Zhou, Z., Tong, Y. & Zou, Y. (2022) Recent ostracods as ecological indicators and its applications: An example from the southern Tibetan Plateau. Ecological Indicators, 143, 109326. https://doi.org/10.1016/j.ecolind.2022.109326
  88. Watabe, K. & Kaesler, R.L. (2004) Ontogeny of a new species of Paraparchites (Ostracoda) from the lower Permian Speiser Shale in Kansas. Journal of Paleontology, 78 (3), 603–611. https://doi.org/10.1666/0022-3360(2004)078%3C0603:OOANSO%3E2.0.CO;2
  89. Whatley, R.C. (1988) Population structure of ostracods: some general principles for the recognition of palaeoenvironments. In: De Deckker, P., Colin, J.P. & Peypouquet, J.P. (Eds.), Ostracoda in the Earth Sciences. Elsevier, Amsterdam, pp. 245–256.
  90. Wickham, H. (2016) ggplot2: Elegant Graphics for Data Analysis. Springer-Verlag, New York, New York, VIII + 213 pp. [ISBN 978-3-319-24277-4, https://ggplot2.tidyverse.org]
  91. Wrozyna, C., Frenzel, P., Steeb, P., Zhu, L. & Schwalb, A. (2009a) Recent lacustrine Ostracoda and first transfer function for palaeo-water depth estimation in Nam Co, southern Tibetan Plateau. Revista Española de Micropaleontología, 41 (1–2), 1–20.
  92. Wrozyna, C., Frenzel, P., Xie, M., Zhu, L. & Schwalb, A. (2009b) A taxonomical and ecological overview of recent and Holocene ostracodes of the Nam Co region, Southern Tibet. Quaternary Sciences, 29 (4), 665–677. https://doi.org/10.3969/j.issn.1001-7410.2009.04.02
  93. Wrozyna, C., Frenzel, P., Steeb, P., Zhu, L., van Geldern, R., Meckensen, A. & Schwalb, A. (2010) Stable isotope and ostracode species assemblage evidence for lake level changes of Nam Co, southern Tibet, during the past 600 years. Quaternary International, 212, 2–13. https://doi.org/10.1016/j.quaint.2008.12.010
  94. Xie, M., Zhu, L., Peng, P., Wang, J., Wang, Y. & Schwalb, A. (2009) Ostracod assemblages and their environmental significance from the lake core of the Nam Co on the Tibetan Plateau 8.4 kaBP. Journal of Geographical Sciences, 19, 387–402. https://doi.org/10.1007/s11442-009-0387-3
  95. Yang, F. (1988) Distribution of the brackish-salt water ostracods in northwestern Qinghai Plateau and its geological significance. In: Hanai, T., Ikeya, N. & Ishizaki, K. (Eds.), Evolutionary Biology of Ostracoda: Its Fundamentals and Applications - Proceedings of the Ninth International Symposium on Ostracoda. Developments in Palaeontology and Stratigraphy, 11, 519–530. https://doi.org/10.1016/s0920-5446(08)70205-x
  96. Yin, Y. & Martens, K. (1997) On a new species of Fabaeformiscandona KRSTIC, 1972 (Crustacea, Ostracoda) from China, with a preliminary checklist of recent Chinese non-marine ostracods. Hydrobiologia, 357, 117–128. https://doi.org/10.1023/A:1003182720121
  97. Yu, N., Zhao, Q., Li, E., Chen, S. & Chen, L. (2009) An updated and annotated checklist of recent nonmarine ostracods from China. Zootaxa, 2067 (1), 29–50. https://doi.org/10.11646/zootaxa.2067.1.2
  98. Zhai, D., Xiao, J., Fan, J., Zhou, L., Wen, R. & Pang, Q. (2013) Spatial heterogeneity of the population age structure of the ostracode Limnocythere inopinata in Hulun Lake, Inner Mongolia and its implications. Hydrobiologia, 716 (1), 29–46. https://doi.org/10.1007/s10750-013-1541-6
  99. Zhai, D., Xiao, J., Fan, J., Wen, R. & Pang, Q. (2015) Differential transport and preservation of the instars of Limnocythere inopinata (Crustacea, Ostracoda) in three large brackish lakes in northern China. Hydrobiologia, 747 (1), 1–18. https://doi.org/10.1007/s10750-014-2118-8
  100. Zhang, J., Holmes, J.A., Chen, F., Qiang, M., Zhou, A. & Chen, S. (2009) An 850-year ostracod-shell trace-element record from Sugan Lake, northern Tibetan Plateau, China: Implications for interpreting the shell chemistry in high-Mg/Ca waters. Quaternary International, 194, 119–133. https://doi.org/10.1016/j.quaint.2008.05.003
  101. Zhang, Q., Kang, S., Wang, F., Li, C. & Xu, Y. (2008) Major ion geochemistry of Nam Co Lake and its sources, Tibetan Plateau. Aquatic Geochemistry, 14, 321–336. https://doi.org/10.1007/s10498-008-9039-y
  102. Zhang, W., Mischke, S., Zhang, C., Gao, D. & Fan, R. (2013) Ostracod distribution and habitat relations in the Kunlun Mountains, northern Tibetan Plateau. Quaternary International, 313–314, 38–46. https://doi.org/10.1016/j.quaint.2013.06.020
  103. Zhang, Y.L., Li, B.Y., Liu, L.S. & Zheng, D. (2021) Redetermine the region and boundaries of the Qinghai Tibetan plateau. Geographical Research, 40 (6), 1543–1553. https://doi.org/10.11821/dlyj020210138
  104. Zhu, L., Wu, Y., Wang, J., Lin, X., Ju, J., Xie, M., Li, M., Mäusbacher, R., Schwalb, A. & Daut, G. (2008) Environmental changes since 8.4 ka reflected in the lacustrine core sediments from Nam Co, central Tibetan Plateau, China. The Holocene, 18 (5), 831–839. https://doi.org/10.1177/0959683608091801
  105. Zhu, L., Peng, P., Xie, M., Wang, J., Frenzel, P., Wrozyna, C. & Schwalb, A. (2010) Ostracod-based environmental reconstruction over the last 8,400 years of Nam Co Lake on the Tibetan Plateau. Hydrobiologia, 648, 157–174. https://doi.org/10.1007/s10750-010-0149-3