Skip to main content Skip to main navigation menu Skip to site footer
Responsive image
Issue: Vol. 5424 No. 3: 14 Mar. 2024
Type: Article
Published: 2024-03-14
DOI: 10.11646/zootaxa.5424.3.2
Page range: 308-322
Abstract views: 77
PDF downloaded: 6

One more step in solving the Chydorus puzzle—a morphological comparison between Chydorus tilhoi Rey & Saint-Jeans, 1969 and Chydorus sphaericus (O.F. Müller, 1776) (Crustacea: Cladocera)

Laboratório de Taxonomia Animal; Instituto de Biociências; Universidade Federal de Jataí—UFJ; BR 364 km 195 n°3800; CEP 75801-615; Jataí; GO; Brazil
Laboratório de Plâncton; Departamento de Hidrobiologia; CCBS; Universidade Federal de São Carlos- UFSCar; São Carlos; SP; Brazil
Laboratório de Taxonomia Animal; Instituto de Biociências; Universidade Federal de Jataí—UFJ; BR 364 km 195 n°3800; CEP 75801-615; Jataí; GO; Brazil; Independent Researcher
Programa de Pós-graduação em Ciências Biológicas (Zoologia); Universidade Estadual Paulista- UNESP; Instituto de Biociências; CEP 18618-970; Botucatu; Brazil
Laboratório de Plâncton; Departamento de Hidrobiologia; CCBS; Universidade Federal de São Carlos- UFSCar; São Carlos; SP; Brazil
Laboratório de Plâncton; Departamento de Hidrobiologia; CCBS; Universidade Federal de São Carlos- UFSCar; São Carlos; SP; Brazil
Unité d’Enseignement et de Recherche en Hydrobiologie Appliquée; Département de Biologie-Chimie; ISP/Bukavu; Bukavu; Democratic Republic of the Congo; Africa
University of Liège; Chemical Oceanography Unit; Liège; Belgium
Laboratório de Plâncton; Departamento de Hidrobiologia; CCBS; Universidade Federal de São Carlos- UFSCar; São Carlos; SP; Brazil
Crustacea Africa Congo River Basin morphometry redescription taxonomy

Abstract

A number of species of Chydorus Leach, 1816 (Crustacea: Cladocera) need improvements in their taxonomy much more than any other genus within the family Chydoridae Dybowsky & Grochowski, 1894 emend. Frey, 1967, which makes the systematics of the genus still a puzzle that lacks several pieces. Here, we redescribe the African species Chydorus tilhoi Rey & Saint-Jeans, 1969 and compare its morphology with that of Chydorus sphaericus (O.F. Müller, 1776). The two taxa might be easily differentiated because C. tilhoi has a single and relatively large major head pore with a wide rim, labral keel elongated with a large spine, and postabdomen with postanal part elongated, narrowing distally and with denticles near its anal margin, organized in groups. These morphological traits are absent in C. sphaericus. Chydorus tilhoi and C. sphaericus also differ in the morphology of the first (Inner Distal Lobe setae), third (exopodite proportion), and fifth (exopodite shape) limbs. Based on the literature and our observations, the limb morphology of C. tilhoi has important similarities with that of C. breviceps, C. nitidulus and C. dentifer, and their translocation to a new genus seems to be a fundamental piece in the puzzle of Chydorus.

 

References

  1. Alonso, M. (1996) Crustacea, Branchiopoda. In: Ramos, M.A., Alba, J., Bellés, X., Gonsálbes, J., Guerra, A., Macpherson, E., Martín, F., Serrano, J. & Templado, J. (Eds.), Fauna Ibérica. Vol. 7. Museo Nacional de Ciencias Naturales, CSIC, Madrid, pp. 1–486.
  2. Belyaeva, M. & Taylor, D.J. (2009) Cryptic species within the Chydorus sphaericus species complex (Crustacea: Cladocera) revealed by molecular markers and sexual stage morphology. Molecular Phylogenetics and Evolution, 50 (3), 534–546. https://doi.org/10.1016/j.ympev.2008.11.007
  3. Borges, A.V., Darchambeau, F., Lambert, T., Morana, C., Allen, G.H., Tambwe, E., Toengaho Sembaito, A., Mambo, T., Nlandu Wabakhangazi, J., Descy, J.-P., Teodoru, C.R. & Bouillon, S. (2019) Variations in dissolved greenhouse gases (CO2, CH4, N2O) in the Congo River network overwhelmingly driven by fluvial-wetland connectivity. Biogeosciences, 16, 3801–3834. https://doi.org/10.5194/bg-16-3801-2019
  4. Elmoor-Loureiro, L.M.A. (1997) Manual de identificação dos Cladóceros Límnicos do Brasil. Universa, Brasília, 156 pp.
  5. Frey, D.G. (1980) On the plularity of Chydorus sphaericus (O.F. Muller) (Cladocera, Chydoridae), and designation of a neotype from Sjaelso, Denmark. Hydrobiologia, 69, 83–123. https://doi.org/10.1007/BF00016540
  6. Frey, D.G. (1982a) The honeycombed species of Chydorus (Cladocera, Chydoridae): comparison of C. bicornutus and C. bicollaris n. sp. with some preliminary comments on faviformis. Canadian Journal of Zoology, 60, 1892–1916. https://doi.org/10.1139/z82-246
  7. Frey, D.G. (1982b) The reticulated species of Chydorus (Cladocera, Chydoridae): two new species with suggestions of convergence. Hydrobiologia, 93, 255–279. https://doi.org/10.1007/BF00012335
  8. Frey, D.G. (1982c) Relocation of Chydorus barroisi and related species (Cladocera, Chydoridae) to a new genus and description of two new species. Hydrobiologia, 86, 231–269. https://doi.org/10.1007/bf00006141
  9. Frey, D.G. (1985) A new species of the Chydorus sphaericus group (Cladocera, Chydoridae) from Western Montana. Internationale Revue der gesamten Hydrobiologie und Hydrographie, 70 (1), 3–20. https://doi.org/10.1002/iroh.19850700102
  10. Frey, D.G. (1987) The North American Chydorus faviformis (Cladocera, Chydoridae) and the honeycombed taxa of other continents. Philosophical Transactions of the Royal Society of London B, 315, 353–402. https://doi.org/10.1098/rstb.1987.0012
  11. Karabanov, D.P., Bekker, E.I., Garibian, P.G., Shiel, R.J., Kobayashi, T., Taylor, D.J. & Kotov, A.A. (2022) Multiple Recent Colonizations of the Australian Region by the Chydorus sphaericus Group (Crustacea: Cladocera). Water, 14, 594. https://doi.org/10.3390/w14040594
  12. Klimovsky, A.I. & Kotov, A.A. (2015) Cladocera (Crustacea, Branchiopoda) of Central Yakutia 3. Taxa from the Chydorus sphaericus s. l. species group (Anomopoda, Chydoridae). Zoologicheskiy Zhurnal, 94 (11), 1257–1267. https://doi.org/10.7868/S0044513415110057
  13. Korínek, V. (1984) Cladocera. Hydrobiological survey of Lake Bangweulu Luapula river basin. Scientific results. Hydrobiological Club of Brussels, 2, 4–117.
  14. Kotov, A.A. (2000a) Analysis of Kozhowia Vasiljeva & Smirnov, 1969 (Chydoridae, Anomopoda, Branchiopoda), and a description of Parakozhowia gen. n. Hydrobiologia, 437, 17–56. https://doi.org/10.1023/A:1026507529975
  15. Kotov, A.A. (2000b) Redescription and assignment of the chydorid Indialona ganapati Petkovski, 1966 (Branchiopoda: Anomopoda: Aloninae) to Indialonini, new tribus. Hydrobiologia, 439, 161–178. https://doi.org/10.1023/A:1004187007890
  16. Kotov, A.A., Karabanov, D.P., Bekker, E.I., Neretina, T.V. & Taylor, D.J. (2016) Phylogeography of the Chydorus sphaericus group (Cladocera: Chydoridae) in the Northern Palearctic. PLoS ONE, 11 (12), e0168711. https://doi.org/10.1371/journal.pone.0168711
  17. Kotov, A.A., Sinev, A.Y. & Berrios, V.L. (2010) The Cladocera (Crustacea: Branchiopoda) of six high altitude water bodies in the North Chilean Andes, with discussion of Andean endemism. Zootaxa, 2430 (1), 1–66. https://doi.org/10.11646/zootaxa.2430.1.1
  18. Kotov, A.A., Jeong, H.J. & Lee, W. (2012) Cladocera (Crustacea: Branchiopoda) of the south-east of the Korean Peninsula, with twenty new records for Korea. Zootaxa, 3368 (1), 50–90. https://doi.org/10.11646/zootaxa.3368.1.4
  19. Kotov, A.A., Forró, L., Korovchinsky, N.M. & Petrusek, A. (2013) World checklist of freshwater Cladocera species. World Wide Web electronic publication. Available from: http://fada.biodiversity.be/group/show/17 (accessed 10 October 2023)
  20. Makino, W., Suzuki, H., Otake, Y., Ban, S. & Urabe, J. (2023) The first report of the non-indigenous Chydorus brevilabris Frey, 1980 (Crustacea: Cladocera) in Asian freshwaters. Limnology, 27, 1–9. https://doi.org/10.1007/s10201-023-00719-4
  21. Neretina, A.N., Garibian, P.G., Sinev, A.Y. & Kotov, A.A. (2018) Diversity of the subgenus Disparalona (Mixopleuroxus) Hudec, 2010 (Crustacea: Cladocera) in the new and old world. Journal of Natural History, 52, 155–205. https://doi.org/10.1080/00222933.2017.1411987
  22. Paggi, J.C. (1972) Nota sistemática acerca de algunos cladóceros del género Chydorus, Leach, 1843, de la Republica Argentina. Physis, 31 (82), 223–236.
  23. Rey, J. & Saint-Jean, L. (1969) Les cladoceres (Crustacea, Branchiopoda) du Tchad. Cahiers O.R.S.T.O.M., Série hydrobiologie, 3, 21–42.
  24. Rosário, M.G.A., Elmoor-Loureiro, L.M.A. & Sousa, F.D.R.S. (2022) Avaliação da forma e tamanho do pós-abdômen de Chydorus nitidulus (Crustaca: Cladocera). Anais do evento 10 Anos do PPG Zoo: Programa de Pós-Graduação em Zoologia— Universidade de Brasília. Available from: https://www.pgzoounb.net.br/_files/ugd/89bec5_3385195a02c54c9fa365baf67d20cd95.pdf (accessed 19 February 2024)
  25. Sinev, A.Y. (2014) A new and a rare species of Chydorus Leach, 1816 (Branchiopoda: Cladocera: Anomopoda) from Cat Tien National Park, Vietnam. Zootaxa, 3861 (2), 127–144. https://doi.org/10.11646/zootaxa.3861.2.2
  26. Sinev, A.Y. (2015) Revision of the pulchella-group of Alona s. lato leads to its translocation to Ovalona Van Damme et Dumont, 2008 (Branchiopoda: Anomopoda: Chydoridae). Zootaxa, 4044 (4), 451–492. https://doi.org/10.11646/zootaxa.4044.4.1
  27. Sinev, A.Y. (2020) Re-evaluation of the genus Biapertura Smirnov, 1971 (Cladocera: Anomopoda: Chydoridae). Zootaxa, 4885 (3), 301–335. https://doi.org/10.11646/zootaxa.4885.3.1
  28. Sinev, A.Y. & Dumont, H. J. (2016) Revision of costata-group of Alona s. lato (Cladocera: Anomopoda: Chydoridae) confirms its generic status. European Journal of Taxonomy, 233, 1–38. https://doi.org/10.5852/ejt.2016.223
  29. Sinev, A.Y., Novichkova, A.A. & Chertoprud, E.S. (2022) A new species of honeycombed Chydorus Leach, 1816 (Cladocera: Anomopoda: Chydoridae) from tundra of North-East Russia. Zootaxa, 5154 (2), 198–210. https://doi.org/10.11646/zootaxa.5154.2.5
  30. Sinev, A.Y., Sousa, F.D.R. & Elmoor-Loureiro, L.M.A. (2023) Revision of the guttata-group of Alona s. lato leads to its translocation to Prendalona Sousa, Elmoor-Loureiro & Santos, 2018 (Cladocera: Anomopoda: Chydoridae). Zootaxa, 5293 (1), 95–121. https://doi.org/10.11646/zootaxa.5293.1.4
  31. Smirnov, N.N. (1971) Chydoridae fauny mira. Fauna USSR, Rakoobraznie, 1 (2), 1–531.
  32. Smirnov, N.N. (1996) Cladocera: the Chydorinae and Sayciinae (Chydoridae) of the world. SPB Academic Publishing, Amsterdam, 197 pp.
  33. Smirnov, N.N. & Sheveleva, N.G. (2010) Chydorus irinae sp. n. (Anomopoda, Chydoridae, Chydorinae) from the Tom’ River (the Amur basin, Russia). Zoologicheskiy Zhurnal, 89, 635–638. https://doi.org/10.15468/39omei
  34. Sousa, F.D.R., Elmoor-Loureiro, L.M.A. & Santos, S. (2016) Position of the dentifera-group in the Coronatella-branch and its relocation to a new genus: Magnospina gen. n. (Crustacea, Chydoridae, Aloninae). ZooKeys, 586, 95–119. https://doi.org/10.3897/zookeys.586.8209
  35. Sousa, F.D.R., Elmoor-Loureiro, L.M.A., Mugnai, R., Panarelli, E.A. & Paggi, J.C. (2018) A revision of the genus Disparalona (Cladocera, Chydorinae) in South America. European Journal of Taxonomy, 460. [published online] https://doi.org/10.5852/ejt.2018.460
  36. Van Damme, K. (2016) Endemism and long distance dispersal in the waterfleas of Easter Island. Zootaxa, 4139 (3), 221–232. https://doi.org/10.11646/zootaxa.4154.3.2
  37. Van Damme, K. & Dumont, J.H. (2008) Further division of Alona Baird, 1843: separation and position of Coronatella Dybowski & Grochowski and Ovalona gen.n. (Crustacea: Cladocera). Zootaxa, 1960 (1), 1–44. https://doi.org/10.11646/zootaxa.1960.1.1
  38. Van Damme, K., Sinev, A.Y. & Dumont, H.J. (2011) Separation of Anthalona gen.n. from Alona Baird, 1843 (Branchiopoda: Cladocera: Anomopoda): morphology and evolution of scraping stenothermic alonine. Zootaxa, 2875 (1), 1–64. https://doi.org/10.11646/zootaxa.2875.1.1
  39. Van Damme, K., Chiambeng, G., Maiphae, S & Dumont, H.J. (2003) New species in the rheophilous genus Nicsmirnovius Chiambeng & Dumont, 1999 (Branchiopoda: Anomopoda: Chydoridae) and reassignment of Alona eximia Kiser, 1948 and Alonella fitzpatricki Chien, 1970. Hydrobiologia, 499, 25–49. https://doi.org/10.1023/A:1026391501312