Skip to main content Skip to main navigation menu Skip to site footer
Article
Published: 2022-09-23

Redescription of the longnose houndshark Iago garricki (Carcharhiniformes: Triakidae), based on specimens recently collected from the South China Sea

Department of Environmental Biology and Fisheries Science, National Taiwan Ocean University, Keelung, Taiwan
National Museum of Marine Biology & Aquarium, Pingtung, Taiwan 3Institute of Marine Biology, National Dong Hwa University, Hualien 4Australian Museum, Sydney, Australia (Research Associate)
Center of Excellence for the Oceans, National Taiwan Ocean University, Keelung, Taiwan 6George Chen Shark Research Center, National Taiwan Ocean University, Keelung, Taiwan 7Institute of Marine Affairs and Resource Management, National Taiwan Ocean University, Keelung, Taiwan
Department of Environmental Biology and Fisheries Science, National Taiwan Ocean University, Keelung, Taiwan. George Chen Shark Research Center, National Taiwan Ocean University, Keelung, Taiwan
Pisces Biodiversity Chondrichthyes genus Iago taxonomy distribution

Abstract

The longnose houndshark, Iago garricki Fourmanoir & Rivaton 1979, was described based on five specimens collected from Vanuatu. Five additional specimens were recently collected from the waters off Dongsha Atoll, South China Sea. A redescription of this species is provided based on the holotype, non-types collected near the type locality and off Dongsha Atoll. The species is characterized by eye length larger than gill slit height; first dorsal-fin origin not reaching a vertical line through pectoral-fin base; head length 20.2–22.2% TL; preoral length 7.2–8.3% TL; upper labial furrow 2.2–3.4% TL; lateral teeth with 1–3 small cusplets on lateral side basally; diplospondylous centra 53–61; precaudal centra 94–102; and total centra 149–157. The specimens collected from the South China Sea represent the northernmost distributional record of this species.

 

References

  1. Compagno, L.J.V. (1984) Sharks of the world: an annotated and illustrated catalogue of shark species known to date: FAO Species Catalogue, volume 4, sharks of the world, part 2, carcharhiniformes. In: Fischer, W. & Nauen, C.E. (Eds.), FAO Fisheries Synopsis, Italy. United Nations Development Programme
    Food And Agriculture Organization of The United Nations, Rome, pp. 251–655.
    Compagno, L.J.V. (1988) Sharks of the order Carcharhiniformes. Princeton University Press, Princeton, New Jersey, 486 pp.
    Compagno, L.J.V., Last, P.R., Stevens, J.D. & Alava, M.N.R. (2005) Checklist of Philippine chondrichthyes. CSIRO Marine Laboratories Report 243, Hobart, 103 pp.
    Compagno, L.J.V. & Springer, S. (1971) Iago, a new genus of carcharhinid sharks, with a redescription of I. omanensis. Fishery Bulletin, 69 (3), 615–626.
    Cubelio, S.S., Remya, R. & Kurup, B.M. (2011) A new species of Mustelus (Family: Triakidae) from Indian EEZ. Indian Journal of Geo-Marine Sciences, 40 (1), 28–31.
    Ebert, D.A., Dando, M. & Fowler, S. (2021) Sharks of the world: a complete guide. Princeton University Press, Princeton, New Jersey, United States, 607 pp. https://doi.org/10.1515/9780691210872
    Fernando, D., Bown, R.M., Tanna, A., Gobiraj, R., Ralicki, H., Jockusch, E.L., Ebert, D.A., Jensen, K. & Caira, J.N. (2019) New insights into the identities of the elasmobranch fauna of Sri Lanka. Zootaxa, 4585 (2), 201–238. https://doi.org/10.11646/zootaxa.4585.2.1
    Fourmanoir, P. & Rivaton, J. (1979) Poissons de la pente récifale externe de Nouvelle-Calédonie et des Nouvelles-Hébrides. Cahiers de l'Indo-Pacifique, 1 (4), 405–443.
    Last, P.R. & Stevens, J.D. (1994) Sharks and rays of Australia. CSIRO Publishing, Melbourne, Australia, 513 pp. https://doi.org/10.2307/1446735
    Naylor, G.J., Caira, J.N., Jensen, K., Rosana, K.A.M., White, W.T. & Last, P.R. (2012) A DNA sequence-based approach to the identification of shark and ray species and its implications for global elasmobranch diversity and parasitology. Bulletin of the American Museum of Natural History, 2012 (367), 1–262. https://doi.org/10.1206/754.1
    Norman, J.R. (1939) Fishes. The John Murray Expedition 1933–34. Scientific Reports, John Murray Expedition, 7 (1), 1–116.
    White, W.T., Last, P.R., Stevens, J.D., Yearsly, G.K., Fahmi & Dharmadi (2006) Economically important sharks and rays of Indonesia. Australian Centre for international Agricultural research, Canberra, Australia, 329 pp.
    White, W.T., Baje, L., Sabub, B., Appleyard, S., Pogonoski, J.J. & Mana, R. (2018) Sharks and Rays of Papua New Guinea. ACIAR Monograph No. 189, Australian Centre for International Agricultural Research, Canberra, 327 pp.
    White, W.T. & Ko'Ou, A. (2018) An annotated checklist of the chondrichthyans of Papua New Guinea. Zootaxa, 4411 (1), 1–82. https://doi.org/10.11646/zootaxa.4411.1
    White, W.T., Arunrugstichai, S. & Last, P.R. (2021) Revision of the genus Mustelus (Carcharhiniformes: Triakidae) in the northern Indian Ocean, with description of a new species and a discussion on the validity of M. walkeri and M. ravidus. Marine biodiversity, 51 (3), 1–24. https://doi.org/10.1007/s12526-021-01161-4