Behavioural responses to structures on the seafloor by the deep-sea fish Coryphaenoides armatus: Implications for the use of baited landers

Alan John Jamieson, David Mark Bailey, H. -. J. Wagner, Philip Michael Bagley, Imants George Priede

Research output: Contribution to journalArticlepeer-review

35 Citations (Scopus)

Abstract

Coryphaenoides armatus plays a fundamental role in the dispersal of organic matter on the deep-sea floor by consuming food-falls. The use of baited cameras to study population parameters (e.g. abundances and size frequencies) assumes that members of this species follow odour plumes directly to bait, appear immediately in the field of view, and depart as predicted by optimal foraging theory. Described here are behaviours to the contrary observed during the operation and development of more complex baited camera systems. Of the 247 C armatus observed by a video lander, 72.5% of the fish explored the structure whilst only 6% fed, and 21.5% were indifferent. This exploratory behaviour increased individual staying time by 38.4% compared to those that just fed. Experiments with several models of in situ fish respirometry lander showed the importance of both equipment design, and an understanding of the behaviour of the target animals in maximising capture success. These results show how previously unexpected aspects of behaviour by C armatus can greatly affect the chances of capturing members of this species and influence the results of baited camera experiments. (c) 2006 Elsevier Ltd. All rights reserved.

Original languageEnglish
Pages (from-to)1157-1166
Number of pages9
JournalDeep Sea Research Part I: Oceanographic Research Papers
Volume53
DOIs
Publication statusPublished - 2006

Keywords

  • deep-sea fish
  • fish behaviour
  • underwater structures
  • baited cameras
  • NE Atlantic
  • NORTHEAST ATLANTIC-OCEAN
  • DEMERSAL FISHES
  • IN-SITU
  • PORCUPINE SEABIGHT
  • FREE VEHICLE
  • FOOD FALLS
  • CONSUMPTION
  • DISPERSAL
  • ABUNDANCE
  • TRACKING

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