Liparid and macrourid fishes of the hadal zone

in situ observations of activity and feeding behaviour

A J Jamieson, T Fujii, M Solan, A K Matsumoto, P M Bagley, I G Priede

Research output: Contribution to journalArticle

60 Citations (Scopus)

Abstract

Using baited camera landers, the first images of living fishes were recorded in the hadal zone (6000-11 000 m) in the Pacific Ocean. The widespread abyssal macrourid Coryphaenoides yaquinae was observed at a new depth record of approximately 7000 m in the Japan Trench. Two endemic species of liparid were observed at similar depths: Pseudoliparis amblystomopsis in the Japan Trench and Notoliparis kermadecensis in the Kermadec Trench. From these observations, we have documented swimming and feeding behaviour of these species and derived the first estimates of hadal fish abundance. The liparids intercepted bait within 100-200 min but were observed to preferentially feed on scavenging amphipods. Notoliparis kermadecensis act as top predators in the hadal food web, exhibiting up to nine suction-feeding events per minute. Both species showed distinctive swimming gaits: P. amblystomopsis (mean length 22.5 cm) displayed a mean tailbeat frequency of 0.47 Hz and mean caudal : pectoral frequency ratio of 0.76, whereas N. kermadecensis (mean length 31.5 cm) displayed respective values of 1.04 and 2.08 Hz. Despite living at extreme depths, these endemic liparids exhibit similar activity levels compared with shallow-water liparids.

Original languageEnglish
Pages (from-to)1037-1045
Number of pages9
JournalProceedings of the Royal Society of London. B, Biological Sciences
Volume276
Issue number1659
DOIs
Publication statusPublished - 22 Mar 2009

Keywords

  • liparid
  • macrourid
  • Pseudoliparis amblystomopsis
  • Notoliparis kermadecensis
  • hadal zone
  • Pacific Ocean
  • Eastern North Pacific
  • South Georgia slope
  • sea demersal fishes
  • coryphaenoides-armatus
  • Atlantic-Ocean
  • baited camera
  • deep
  • coryphaenoides-(nematonurus)-armatus
  • morphology
  • community

Cite this

Liparid and macrourid fishes of the hadal zone : in situ observations of activity and feeding behaviour. / Jamieson, A J; Fujii, T; Solan, M; Matsumoto, A K; Bagley, P M; Priede, I G.

In: Proceedings of the Royal Society of London. B, Biological Sciences, Vol. 276, No. 1659, 22.03.2009, p. 1037-1045.

Research output: Contribution to journalArticle

Jamieson, A J ; Fujii, T ; Solan, M ; Matsumoto, A K ; Bagley, P M ; Priede, I G. / Liparid and macrourid fishes of the hadal zone : in situ observations of activity and feeding behaviour. In: Proceedings of the Royal Society of London. B, Biological Sciences. 2009 ; Vol. 276, No. 1659. pp. 1037-1045.
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AB - Using baited camera landers, the first images of living fishes were recorded in the hadal zone (6000-11 000 m) in the Pacific Ocean. The widespread abyssal macrourid Coryphaenoides yaquinae was observed at a new depth record of approximately 7000 m in the Japan Trench. Two endemic species of liparid were observed at similar depths: Pseudoliparis amblystomopsis in the Japan Trench and Notoliparis kermadecensis in the Kermadec Trench. From these observations, we have documented swimming and feeding behaviour of these species and derived the first estimates of hadal fish abundance. The liparids intercepted bait within 100-200 min but were observed to preferentially feed on scavenging amphipods. Notoliparis kermadecensis act as top predators in the hadal food web, exhibiting up to nine suction-feeding events per minute. Both species showed distinctive swimming gaits: P. amblystomopsis (mean length 22.5 cm) displayed a mean tailbeat frequency of 0.47 Hz and mean caudal : pectoral frequency ratio of 0.76, whereas N. kermadecensis (mean length 31.5 cm) displayed respective values of 1.04 and 2.08 Hz. Despite living at extreme depths, these endemic liparids exhibit similar activity levels compared with shallow-water liparids.

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