The supergiant amphipod Alicella gigantea (Crustacea: Alicellidae) from hadal depths in the Kermadec Trench, SW Pacific Ocean

A. J. Jamieson*, N. C. Lacey, A. -N. Loerz, A. A. Rowden, S. B. Piertney

*Corresponding author for this work

Research output: Contribution to journalArticle

23 Citations (Scopus)

Abstract

Here we provide the first record of the 'supergiant' amphipod Alicella gigantea Chevreux, 1899 (Alicellidae) from the Southern Hemisphere, and extend the known bathymetric range by over 1000 m to 7000 m. An estimated nine individuals were observed across 1500 photographs taken in situ by baited camera at 6979 m in the Kermadec Trench, SW Pacific Ocean. Nine specimens, ranging in length from 102 to 290 mm were recovered by baited trap at depths of 6265 m and 7000 m. Mitochondrial and nuclear DNA sequences obtained indicate a cosmopolitan distribution for the species. Data and observations from the study are used to discuss the reason for gigantism in this species, and its apparently disjunct geographical distribution. Crown Copyright (C) 2012 Published by Elsevier Ltd. All rights reserved.

Original languageEnglish
Pages (from-to)107-113
Number of pages7
JournalDeep Sea Research Part II: Topical Studies in Oceanography
Volume92
DOIs
Publication statusPublished - Aug 2013

Keywords

  • Amphipoda
  • Alicellidae
  • Baited camera
  • Baited trap
  • Hadal zone
  • Kermadec Trench
  • Pacific Ocean
  • DEEP-SEA AMPHIPODS
  • OXYGEN AVAILABILITY
  • POPULATION-STRUCTURE
  • EURYTHENES-GRYLLUS
  • CHEVREUX
  • ISLANDS

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