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First records of small-sized young giant squid Architeuthis dux from the coasts of Kyushu Island and the south-western Sea of Japan

  • Toshifumi Wada (a1), Tsunemi Kubodera (a2), Morihiko Yamada (a3) and Hiroyoshi Terakado (a4)

Three individuals of small, young giant squid Architeuthis dux were caught in or near Japanese coastal waters during April–June 2013. The first occurrence of a young individual of 140.8 mm dorsal mantle length with a total weight of 44.81 g was recorded on the coast off Uchinoura, Kagoshima, Kyushu Island, southern Japan. The remaining two young individuals, both measuring 332.0 mm in dorsal mantle length with total weights of 390.63 and 356.95 g respectively, were caught on the coast off Hamada, Shimane, south-western Sea of Japan. Most morphological traits of all the specimens were consistent with those of A. dux, which was supported by further genetic analysis. Here we present some morphological traits of young giant squids with morphometric data and photographs.

Corresponding author
Correspondence should be addressed to: T. Wada, Institute of Natural and Environmental Sciences, University of Hyogo, Yayoigaoka 6, Sanda, Hyogo 669-1546, Japan email:
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Á. Guerra , Á.F. González , S. Pascual and E.G. Dawe (2011) The giant squid Architeuthis: an emblematic invertebrate that can represent concern for the conservation of marine biodiversity. Biological Conservation 144, 19891997.

H. Hase , J.H. Yoon and W. Koterayama (1999) The current structure of the Tsushima Warm Current along the Japanese coast. Journal of Oceanography 55, 217235.

H.J.T. Hoving , M.A.C. Roeleveld , M.R. Lipinski and Y. Melo (2004) Reproductive system of the giant squid Architeuthis in South African waters. Journal of Zoology 264, 153169.

N. Kaneko , T. Kubodera and A. Iguchi (2011) Taxonomic study of shallow-water octopuses (Cephalopoda: Octopodidae) in Japan and adjacent waters using mitochondrial genes with perspectives on octopus DNA barcoding. Malacologia 54, 97108.

T. Kubodera and K. Mori (2005) First-ever observations of a live giant squid in the wild. Proceedings the Royal Society B 272, 25832586.

R.S. Martins and J.A.A. Perez (2009) A new record of giant squid Architeuthis sp. (Cephalopoda: Oegopsida) in Brazilian waters. Zoologia 26, 613623.

M. Regueira , P. Belcari and A. Guerra (2014) What does the giant squid Architeuthis dux eat? Hydrobiologia 725, 4955.

M.A.C. Roeleveld (2000) Giant squid beaks: implications for systematics. Journal of the Marine Biological Association of the United Kingdom 80, 185187.

C.F.E. Roper and K.J. Boss (1982) The giant squid. Scientific American 246, 8289.

K. Tamura , D. Peterson , N. Peterson , G. Stecher , M. Nei and S. Kumar (2011) MEGA5: molecular evolutionary genetics analysis using maximum likelihood, evolutionary distance, and maximum parsimony methods. Molecular Biology and Evolution 28, 27312739.

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Marine Biodiversity Records
  • ISSN: -
  • EISSN: 1755-2672
  • URL: /core/journals/marine-biodiversity-records
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