Skip to main content Skip to main navigation menu Skip to site footer
Type: Article
Published: 2018-11-29
Page range: 195–206
Abstract views: 66
PDF downloaded: 1

Redescription of Ryukyua circularis (Pillai, 1954) (Isopoda, Cymothoidae), parasite of the Bleeker smoothbelly sardinella Amblygaster clupeoides Bleeker, 1849 from India

Centre of Advanced Study in Marine Biology, Annamalai University, Parangipettai– 608 502 Tamil Nadu, India.
Centre of Advanced Study in Marine Biology, Annamalai University, Parangipettai– 608 502 Tamil Nadu, India.
School of Marine and Environmental Sciences, Universiti Malaysia Terengganu, Kuala Nerus, 21030, Malaysia.
Crustacea Ryukyua fish parasite Amblygaster branchial cavity India

Abstract

Ryukyua circularis (Pillai, 1954) is recorded here for the first time on the host Amblygaster clupeoides Bleeker, 1849 from Indian waters. The species is redescribed with illustrations of the gravid female, adult male and manca from its type locality, and the known hosts and geographical records of the species are reviewed. Ryukyua circularis is readily identified from the oval to rounded body shape, widest at pereonite 3–5; cephalon deeply immersed in pereonite 1; mandible palp with the spiny surface, article 3 with a long terminal setae; pleonite 1–3 partially overlapped by a posterolateral margin of pereonite 7; pleotelson anterior lateral margins weakly convex, posterior margin evenly rounded, without median point.

 

References

  1. Aneesh, P.T., Helna, A.K. & Sudha, K. (2016) Branchial cymothoids infesting the marine food fishes of Malabar coast. Journal of Parasitic Diseases, 40 (4), 1270–1277.

    https://doi.org/10.1007/s12639-015-0666-0

    Aneesh, P.T., Sudha, K. Helna, A.K. & Anilkumar, G. (2018) Agarna malayi Tiwari 1952 (Crustacea: Isopoda: Cymothoidae) parasitising the marine fish, Tenualosa toli (Clupeidae) from India: Re-description/description of parasite life cycle and patterns of occurrence. Zoological Studies, 57 (25), 1–22.

    Bowman, T.E. & Tareen, I.U. (1983) Cymothoidae from fishes of Kuwait (Arabian Gulf) (Crustacea, Isopoda). Smithsonian Contributions to Zoology, 382, 1–30.

    https://doi.org/10.5479/si.00810282.382

    Brandt, A. & Poore, G.C.B. (2003) Higher classification of the flabelliferan and related Isopoda based on a reappraisal of relationships. Invertebrate Systematics, 17, 893–923.

    https://doi.org/10.1071/IS02032

    Bruce, N.L. (1986) Revision of the isopod crustacean genus Mothocya Costa, in Hope, 1851 (Cymothoidae: Flabellifera), parasitic on marine fishes. Journal of Natural History, 20 (5), 1089–1192.

    https://doi.org/10.1080/00222938600770781

    Bruce, N.L. (1990) The genera Catoessa, Elthusa, Enispa, Ichthyoxenus, Idusa, Livoneca and Norileca n. gen. (Isopoda, Cymothoidae), crustacean parasites of marine fishes, with descriptions of eastern Australian species. Records of the Australian Museum, 42, 247–300.

    https://doi.org/10.3853/j.0067-1975.42.1990.118

    Bunkley-Williams, L. & Williams, E.H. Jr. (1986) Some parasitic isopods (Crustacea: Cymothoidae) of marine fishes from Thailand. Galaxea, 5, 213–216.

    Costa, A. (1851) Caratteri di alcuni de’generi e specie nouve segnete nel presente catalogo. Catalogo dei crostacei Italiani e di molti altri de Mediterraneo, Napoli, 1851, 41–48.

    Eschmeyer, W.N., Fricke, R. & van der Laan, R. (Eds.) (2018) Catalog of Fishes, Genera, Species, References. Available from: https://www.calacademy.org/scientists/projects/catalog-of-fishes (accessed 30 March 2017)

    Froese, R. & Pauly, D. (2018) FishBase. World Wide Web electronic publication. Available from: http://www.fishbase.org (accessed 30 March 2017)

    Hadfield, K.A., Tuttle, L.J. & Smit, N.J. (2017) Elthusa winstoni sp. n. (Isopoda, Cymothoidae), a new fish parasitic isopod from Hawaii. ZooKeys, 661, 125–135.

    https://doi.org/10.3897/zookeys.661.11251

    Leach, W.E. (1814) Crustaceology. In: Brewster, D. (Ed.), The Edinburgh Encyclopaedia. Baldwin. A. Balfour, Edinburgh, pp. 383–437.

    Leach, W.E. (1818) Cymothoadées. In: Cuvier, F. (Ed.), Dictionnaire des Sciences Naturelles, Paris, 12, pp. 338–354.

    Martin, M.B., Bruce, N.L. & Nowak, B.F. (2015) Review of the fish parasitic genus Ceratothoa Dana, 1852 (Crustacea: Isopoda: Cymothoidae) from Australia, with description of two new species. Zootaxa, 3963 (3), 251–294.

    https://doi.org/10.11646/zootaxa.3963.3.1

    Pillai, N.K. (1954) A preliminary note on the Tanaidacea and Isopoda of Travancore. Bulletin of the Central Research Institute, University of Travancore, Trivandrum, 3, 1–22.

    Pillai, N.K. (1964) Parasitic isopods of the family Cymothoidae from South Indian fishes. Parasitology, 54, 211–223.

    https://doi.org/10.1017/S003118200006786X

    Praveenraj, J., Saravanan, K., Kumar, P.P., Ravichandran, S., Baruah, A., Devi, M.S., Sankar, K.R. & Roy, D. (2017) First record on the occurrence of Ryukyua circularis (Pillai, (1954), a parasitic cymothoid (Crustacean, Isopoda) infesting the clupeid fish Amblygaster sirm (Walbaum) from Andaman Islands, India. Journal of Parasitic Diseases, 2017, 593–595.

    Rameshkumar, G., Ramesh, M. & Ravichandran, S. (2014) New potential host for Ryukyua globosa (Crustacea: Isopoda: Cymothoidae) from Parangipettai, Southeast coast of India. Journal of Parasitic Diseases, 40 (4), 1293–1295.

    https://doi.org/10.1007/s12639-015-0672-2

    Rameshkumar, G., Ravichandran, S. & Allayie, S.A. (2013) Study of the functional morphology of mouthparts of parasitic isopods of marine fishes. Asian Pacific Journal of Tropical Disease, 3 (2), 127–132.

    https://doi.org/10.1016/S2222-1808(13)60056-0

    Schiöedte, J.C. & Meinert, F. (1884) Symbolæ ad monographium Cymothoarum crustaceorum isopodum familiæ. IV. Cymothoidæ Trib. II. Cymothoinæ. Trib. III: Lironecinæ. Naturhistorisk Tidsskrift, 14, 221–454.

    Trilles, J.P., Ravichandran, S. & Rameshkumar, G. (2011) A checklist of the Cymothoidae (Crustacea: Isopoda) recorded from Indian fishes. Acta Parasitologica, 56 (4), 446–459.

    https://doi.org/10.2478/s11686-011-0077-z

    Wägele, J.-W. (1989) Evolution und phylogenetisches System der Isopoda. Stand der Forschung und neue Erkenntnisse. Zoologica, 140, 1–262.

    Williams, E.H. Jr. & Bunkley-Williams, L. (1994b) Ryukyua globosa n. gen., n. sp., and R. circularis n. comb., parasitic in the opercular chambers of Pacific and Indian Ocean clupeid fishes. Journal of Aquactic animal Health, 6, 155–161.