Predicting fish behaviour in response to abyssal food falls

Estimates of fish abundance based on arrival rates and numbers present at baited cameras allow multiple, replicate assessments where data are not available by other means. Unfortunately such estimates are strongly affected by the assumed behaviour of the fish species concerned. Three of the possible...

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Bibliographic Details
Published in:Marine biology 2002-11, Vol.141 (5), p.831-840
Main Authors: BAILEY, D. M, PRIEDE, I. G
Format: Article
Language:English
Subjects:
Abyssal zone
Agnatha and pisces
Animal behavior
Animal ethology
Baits
Biological and medical sciences
Coryphaenoides armatus
Deep sea
Deep water
Estimates
Fish
Fish behavior
Fishing bait
Foraging
Foraging behavior
Fundamental and applied biological sciences. Psychology
Marine
Marine biology
Marine fishes
Odour
Pisces
Psychology. Psychoanalysis. Psychiatry
Swimming
Vertebrata
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Summary:Estimates of fish abundance based on arrival rates and numbers present at baited cameras allow multiple, replicate assessments where data are not available by other means. Unfortunately such estimates are strongly affected by the assumed behaviour of the fish species concerned. Three of the possible foraging strategies of deep-sea fish were modelled and the likely patterns of fish arrival calculated for the same fish density, swimming and current velocities and odour plume properties. Cross-current foraging resulted in the highest numbers of fish at bait, with arrival rates that fitted well to field data. The sit-and-wait strategy produced lower arrival rates with passive drifting animals arriving slowest. Each model produces a distinctive pattern of animal arrivals that may be diagnostic of each foraging strategy. The advantages, disadvantages and likely metabolic and sensory demands of each strategy are discussed.
ISSN:0025-3162
1432-1793
DOI:10.1007/s00227-002-0891-9