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Deep-Water Spawning of Atlantic Mackerel Scomber Scombrus, West of Ireland

Published online by Cambridge University Press:  11 May 2009

I.G. Priede ,
T. Raid  and
J.J. Watson
I.G. Priede
Affiliation:
Department of Zoology, University of Aberdeen, Tillydrone Avenue, Aberdeen, AB9 2TN
T. Raid
Affiliation:
Estonian Marine Research Institute, 32 Lai Street, Tallinn EE-0001, Estonia
J.J. Watson
Affiliation:
Department of Zoology, University of Aberdeen, Tillydrone Avenue, Aberdeen, AB9 2TN
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Extract

Atlantic mackerel (Scomber scombrus L.) were sampled by pelagic trawl over the Porcupine Bank to the west of Ireland between 52°N and 54°N at peak spawning time, between 27 May and 10 June 1992. Distribution of juveniles (age classes 1 and 2) was inversely related to depth, comprising over 90% of hauls close to the coast of Ireland and 20% of the catch on the Porcupine Bank. Egg production increased westwards and was high along the continental shelf edge. Adult spawning fish were found throughout the shelf area and beyond, into waters over 3000 m deep. The results indicate that mackerel spawn over deep water some distance from the shelf edge and may exploit oceanic food resources from deep water.

Type
Research Article
Information
Journal of the Marine Biological Association of the United Kingdom , Volume 75 , Issue 4 , November 1995 , pp. 849 - 855
Copyright
Copyright © Marine Biological Association of the United Kingdom 1995

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