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Type: Article
Published: 2019-12-17
Page range: 561–570
Abstract views: 76
PDF downloaded: 2

Description of female adult and praniza larva of Tenerognathia visus Tanaka, 2005 (Crustacea; Isopoda; Gnathiidae) with notes on mating behavior

San’in Kaigan Geopark Museum of the Earth and Sea, 1794-4 Makidani, Iwami, Tottori, 681-0001 Japan
Crustacea Southwestern Japan coral reef nocturnal species light trap fish ectoparasite

Abstract

Male adults of gnathiid isopods (Crustacea; Isopoda; Gnathiidae) have remarkably developed rectangular-shaped cephalosomes and mandibles in most species. Tenerognathia visus Tanaka, 2005 belongs to a monospecific genus having remarkable characters in male morphology; reduced mandibles and large eyes occupying the whole of an elliptical cephalosome. The original description of T. visus is based on male adult specimens from coral rubble. This study found adult males and their larvae of T. visus attracted by light. Furthermore, specimens of female adults were observed by laboratory rearing of praniza larvae. In this study, morphologies of larvae and female adults of T. visus are described and notes on mating behavior in a laboratory aquarium are provided.

 

References

  1. Boyko, C.B., Bruce, N.L., Hadfield, K.A., Merrin, K.L., Ota, Y., Poore, G.C.B., Taiti, S., Schotte, M. & Wilson, G.D.F. (Eds.) (2008 Onwards) World Marine, Freshwater and Terrestrial Isopod Crustaceans database. Gnathiidae Leach, 1814. Available from: http://www.marinespecies.org/isopoda/aphia.php?p=taxdetails&id=118278 (accessed 28 February 2019)

    Coetzee, M.L., Smit, N.J., Grutter, A.S. & Davies, A.J. (2008) A new gnathiid (Crustacea, Isopoda) parasitizing two species of requiem sharks from Lizard Island, Great Barrier Reef, Australia. Journal of Parasitology, 94 (3), 608–615.

    https://doi.org/10.1645/GE-1391.1

    Coetzee, M.L., Smit, N.J., Grutter, A.S. & Davies, A.J. (2009) Gnathia trimaculata n. sp. (Crustacea: Isopoda: Gnathiidae), an ectoparasite found parasitising requiem sharks from off Lizard Island, Great Barrier Reef, Australia. Systematic Parasitology, 72, 97–112.

    https://doi.org/10.1007/s11230-008-9158-2

    Cohen, B.F. & Poore, G.C.B. (1994) Phylogeny and biogeography of the Gnathiidae (Crustacea: Isopoda) with descriptions of new genera and species, most from south-eastern Australia. Memoirs of Museum of Victoria, 54 (2), 271–397.

    https://doi.org/10.24199/j.mmv.1994.54.13

    Golovan, O.A. (2006) Gnathia gurjanovae sp. n., a new species of gnathiids (Isopoda: Gnathiidae) from Peter the Great Bay, Sea of Japan. Russian Journal of Marine Biology, 32 (1), 28–36.

    https://doi.org/10.1134/S1063074006010044

    Jones, C.M., Nagel, L., Hughes, G.L., Cribb, T.H. & Grutter, A.S. (2007) Host specificity of two species of Gnathia (Isopoda) determined by DNA sequencing blood meals. International Journal for Parasitology, 37, 927–935

    https://doi.org/10.1016/j.ijpara.2007.01.011

    Kensley, B., Schotte, M. & Poore, G.C.B. (2009) Gnathiid isopods (Crustacea: Isopoda: Gnathiidae), mostly new, from the Indian Ocean. Proceedings of the Biological Society of Washington, 122 (1), 32–51.

    https://doi.org/10.2988/07-16.1

    Ota, Y. & Hirose, E. (2009a) Description of Gnathia maculosa and a new record of Gnathia trimaculata (Crustacea, Isopoda, Gnathiidae), ectoparasites of elasmobranchs from Okinawan coastal waters. Zootaxa, 2114 (1), 50–60.

    https://doi.org/10.11646/zootaxa.2114.1.2

    Ota, Y. & Hirose, E. (2009b) Gnathia nubila n. sp. and a new record of Gnathia grandilaris (Crustacea, Isopoda, Gnathiidae) that parasitizes elasmobranchs from Okinawan coastal waters, Japan. Zootaxa, 2238 (1), 43–55.

    https://doi.org/10.11646/zootaxa.2238.1.4

    Ota, Y. (2011) A new species of the gnathiid isopod, Gnathia teruyukiae (Crustacea: Malacostraca), from Japan, parasitizing elasmobranch fish. Bulletin of the National Museum of Nature and Science, Series A, Supplement 5, 41–51.

    Ota, Y. (2012) Gnathiidae from Kumejima Island in the Ryukyu Archipelago, southwestern Japan, with description of three new species (Crustacea: Isopoda). Zootaxa, 3367 (1), 79–94.

    https://doi.org/10.11646/zootaxa.3367.1.8

    Ota, Y. (2014) Three new gnathiid species with larvae ectoparasitic on coastal sharks from southwestern Japan (Crustacea: Isopoda). Zootaxa, 3857 (4), 478–500.

    https://doi.org/10.11646/zootaxa.3857.4.2

    Ota, Y. (2015) Pigmentation patterns are useful for species identification of third-stage larvae of gnathiids (Crustacea: Isopoda) parasitising coastal elasmobranchs in southern Japan. Systematic Parasitology, 90, 269–284.

    https://doi.org/10.1007/s11230-015-9548-1

    Ota, Y., Tanaka, K. & Hirose, E. (2007) A new species of Gnathia (Isopoda: Cymothoida: Gnathiidae) from Okinawajima Island, Ryukyu Archipelago, Southwestern Japan. Zoological Science, 24, 1266–1277.

    https://doi.org/10.2108/zsj.24.1266

    Ota, Y., Tanaka, K., Hirose, M. & Hirose, E. (2010) Description of a new species of Elaphognathia (Isopoda: Gnatheidae) from Japan based on morphological and molecular traits. Journal of Crustacean Biology, 30 (4), 710–720.

    https://doi.org/10.1651/09-3232.1

    Monod, T. (1926) Les Gnathiidae. Meìmories de la Socieìteì des Sciences Naturelles du Maroc, 13, 1–668.

    Smit, N.J. & Davies, A.J. (2004) The curious life-style of the parasitic stages of gnathiid isopods. Advances in Parasitology, 58, 289–391.

    https://doi.org/10.1016/S0065-308X(04)58005-3

    Tanaka, K. (2004) A new species of Gnathia (Isopoda: Cymothoida: Gnathiidae) from Ishigaki Island, the Ryukyus, southwestern Japan. Crustacean Research, 33, 51–60.

    https://doi.org/10.18353/crustacea.33.0_51

    Tanaka, K. (2005) A new genus and species of gnathiid isopod (Isopoda, Gnathiidae) from the Ryukyus, southwestern Japan. Journal of Crustacean Biology, 25 (4), 565–569.

    https://doi.org/10.1651/C-2605.1

    Tanaka, K. (2007) Life history of gnathiid isopods—current knowledge and future directions. Plankton & Benthos Research, 2 (1), 1–11.

    https://doi.org/10.3800/pbr.2.1

    Tanaka, K. & Nishi, E. (2008) Habitat use by the gnathiid isopod Elaphognathia discolor living in terebellid polychaete tubes. Journal of Marine Biological Association of United Kingdom, 88, 57–63.

    https://doi.org/10.1017/S0025315408000039

    Wägele, J.W. (1988) Aspects of the life-cycle of the Antarctic fish parasite Gnathia calva Vanhöffen (Crustacea: Isopoda). Polar Biology, 8, 287–291.

    https://doi.org/10.1007/BF00263177