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Type: Article
Published: 2022-09-23
Page range: 67-77
Abstract views: 297
PDF downloaded: 222

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.

 

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