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Content archived on 2024-04-19

STOCK DYNAMICS, INTERACTIONS AND RECRUITMENT IN NORTH EAST ATLANTIC SQUID FISHERIES

Objective



The coverage of the proposed project extends throughout the entire geographical range of NE Atlantic waters relevant to the Common Fisheries Policy. The principal target species will be Loligo forbesi and Loligo vulgaris with supplementary work on fished stocks of other decapod cephalopods.
a. Population parameters, age, growth and reproduction - discrimination of cohorts by age at recruitment; growth rates derived from the population analysis and the evaluation of biochemical indices of growth and nutritional status; experimental validation of methods for ageing and biochemical indices of growth on captive animals; seasonality of reproduction across geographical range; estimation of reproductive output.
b. Stock interaction, dynamics and pattern of fisheries -introduction of leading edge molecular methods (direct sequencing of mtDNA) to quantify the degree of genetic relatedness between populations in different geographical areas and permit the testing of hypothesis on likely patterns of migration.
c. Recruitment indices - in these annual or near-annual species, recruitment to the fished stock will depend almost entirely on the success of the young-of- the-year cohort (0-group). Indices of recruitment, based on the application of larval/pre-recruit surveys and annual fluctuations in adult stock breeding potential will be investigated.
d. Management models - evaluation of alternative strategies for controlled fishery exploitation by integrating results from new approaches to stock identity and exploration of the introduction of age-related assessment methods.

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Topic(s)

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Funding Scheme

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Coordinator

University of Aberdeen
EU contribution
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Address
2 Tillydrone Avenue
AB9 2TN Aberdeen
United Kingdom

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Total cost

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Participants (7)

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