The relationship between numbers of fish attracted to baited cameras and population density: Studies on demersal grenadiers Coryphaenoides (Nematonurus) armatus in the abyssal NE Atlantic Ocean

Imants George Priede, N R Merrett

Research output: Contribution to journalArticle

45 Citations (Scopus)

Abstract

The number of Coryphaenoides (Nematonurus) armatus attracted to baits (N-peak) at depths of 2000-5000 m in the NE Atlantic Ocean is shown to vary with fish density (n km(-2)) in accordance with the equation:

N-peak = dn/x (1 - exp((-c exp (-nk) -m)x))

where c = 350, d = 4.095 x 10(-3), k = 0.0037, m = 10, x = 0.005 which predicts a dome-shaped relationship with a maximum number observed at intermediate population densities. This results from more rapid arrival of fish at high densities being offset by shorter staying times in the food-rich environment of high-density localities. Caution is advised when using attraction of fish to baited cameras as an index of stock abundance. (C) 1998 Elsevier Science B.V. All rights reserved.

Original languageEnglish
Pages (from-to)133-137
Number of pages5
JournalFisheries Research
Volume36
Issue number2-3
Publication statusPublished - 15 Jun 1998

Keywords

  • Macrouridae
  • abundance index
  • bait
  • Coryphaenoides
  • deep-sea
  • optimal foraging
  • EASTERN NORTH-ATLANTIC
  • PORCUPINE SEABIGHT
  • NORTHEASTERN ATLANTIC
  • ASSEMBLAGE STRUCTURE
  • CORYPHAENOIDES-(NEMATONURUS)-ARMATUS
  • MACROURIDAE
  • TRACKING
  • BEHAVIOR
  • PACIFIC
  • SLOPE

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