In situ observations of trophic behaviour and locomotion of Princaxelia amphipods (Crustacea: Pardaliscidae) at hadal depths in four West Pacific trenches

Alan J. Jamieson, Anne Nina Lörz, Toyonobu Fujii, Imants G. Priede

研究成果: Article

21 被引用数 (Scopus)

抄録

The genus Princaxelia, Pardaliscidae, is a rarely recorded, infrequently collected and hitherto observed benthic amphipod, typically found at hadal depths (>6000 m) in the Pacific Ocean trenches. Little is known about the behaviour or physiology of this genus. Using a baited camera lander, observations of Princaxelia jamiesoni were made in the Japan Trench (7703 m) and Izu- Ogasawara Trench (9316 m) and of Princaxelia aff. abyssalis in the Kermadec Trench (7966 m) and Tonga Trench (8798 m). These amphipods rapidly intercepted the bait and preyed upon smaller lysianassoid amphipods. Mean absolute swimming speeds for P. jamiesoni and P. aff. abyssalis were 4.16 cm.s -1 ± 1.8 SD and 4.02 cm.s -1 ± 0.87 SD respectively. These amphipods have the capacity for long range swimming, high manoeuvrability in close range, and efficient predatory behaviour. Burst swimming speeds for P. aff. abyssalis were 9 and 10 cm.s -1 with accelerations up to 22-25 cm.s -2.

本文言語English
ページ(範囲)143-150
ページ数8
ジャーナルJournal of the Marine Biological Association of the United Kingdom
92
1
DOI
出版ステータスPublished - 2012 2
外部発表はい

ASJC Scopus subject areas

  • Aquatic Science

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