Fish bycatch and discarding in Nephrops trawlers in the Firth of Clyde (west of Scotland)

Yorgos Stratoudakis, Robert J. Fryer, Robin M. Cook, Graham J. Pierce, Ken A. Coull

Research output: Contribution to journalArticle

25 Citations (Scopus)

Abstract

Nephrops norvegicus (Norway lobster or prawn) is an important target species in demersal fisheries of the north-east Atlantic. Trawling for Nephrops is wasteful when many small fish are caught and discarded in the process. Here, data from 106 commercial fishing trips, sampled between 1982 and 1998 as part of the Scottish discard sampling programme, are used to investigate the fish bycatch and discards of Nephrops trawlers in the Firth of Clyde (west of Scotland). A large proportion of the fish caught in the Clyde is discarded, the discards mainly consisting of small demersal fish (mean length about 19 cm), particularly young whiting (Merlangius merlangus). Within the study period, annual estimates of total fish discards ranged from 318 to 3 027 tonnes, with a mean of 1 761 tonnes. Fish landings and discards biomass per unit effort both decreased over the study period. However, the decline in landings per unit effort was greater than that in discards per unit effort, corresponding to an increase in the discard rate over time. In recent years, discards have comprised about 70 % of the fish bycatch. The mean length of discarded fish was positively related to mesh size.

LanguageEnglish
Pages283-291
Number of pages9
JournalAquatic Living Resources
Volume14
Issue number5
Early online date25 Oct 2001
DOIs
Publication statusPublished - 29 Oct 2001

Fingerprint

Nephrops
fishing boats
bycatch
Scotland
fish discards
Nephrops norvegicus
fish
fisheries
Merlangius merlangus
whiting
demersal fishery
demersal fish
trawling
shrimp
mesh size
lobster
fishing
biomass
sampling

Keywords

  • bycatch
  • Firth of Clyde
  • fish discards
  • Nephrops norvegicus
  • trawling

Cite this

Stratoudakis, Yorgos ; Fryer, Robert J. ; Cook, Robin M. ; Pierce, Graham J. ; Coull, Ken A. / Fish bycatch and discarding in Nephrops trawlers in the Firth of Clyde (west of Scotland). In: Aquatic Living Resources. 2001 ; Vol. 14, No. 5. pp. 283-291.
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Fish bycatch and discarding in Nephrops trawlers in the Firth of Clyde (west of Scotland). / Stratoudakis, Yorgos; Fryer, Robert J.; Cook, Robin M.; Pierce, Graham J.; Coull, Ken A.

In: Aquatic Living Resources, Vol. 14, No. 5, 29.10.2001, p. 283-291.

Research output: Contribution to journalArticle

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