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dc.contributor.authorFahy, E
dc.contributor.authorGleeson, P
dc.date.accessioned2011-06-15T10:43:02Z
dc.date.available2011-06-15T10:43:02Z
dc.date.issued1990
dc.identifier.citationFahy, E. & Gleeson, P., "The post-peak-yield gill-net fishery for spurdog Squalus acanthias L. in Western Ireland", Irish Fisheries Investigations Series B, Department of the Marine 1990en_GB
dc.identifier.issn0578-7467
dc.identifier.urihttp://hdl.handle.net/10793/162
dc.description.abstractA gill net fishery, directed on Spurdog, expanded rapidly on the western coast of Ireland in the 1980s and quickly collapsed, the fishermen moving offshore in pursuit of smaller individuals. Catch per effort and landing data in the gill net fishery are used to estimate the size of the mature and maturing component of the south western "stock" which is within a range of 3,700 tonnes (landed) and 5,700 (calculated). An appraisal of the post-peak-yield landings reveals that the average individual weight declined from those of peak landings, in males by 9.5% and females 32.0%, and the percentage of females in them declined from 75 to 19%. The majority of the later catches were immatures whereas the peak-yield catches were mainly mature and maturing females. The average age of females was reduced from 19 to 16 years - 18 to 17 years in the case of males - and later captures were a shorter length at age. The fate of the depleted stock is not known and the possibility of its locus having moved elsewhere cannot be discounted.en_GB
dc.language.isoenen_GB
dc.publisherDepartment of the Marineen_GB
dc.relation.ispartofseriesIrish Fisheries Investigations Series B;35
dc.subjectpost-peak-yielden_GB
dc.subjectgill-neten_GB
dc.subjectfisheryen_GB
dc.subjectspurdogen_GB
dc.subjectSqualus acanthias L.en_GB
dc.subjectWestern Irelanden_GB
dc.titleThe post-peak-yield gill-net fishery for spurdog Squalus acanthias L. in Western Irelanden_GB
dc.typeMonographen_GB
refterms.dateFOA2018-01-12T02:26:59Z


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