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Evaluating the effect of clustering when monitoring the abundance of sea lice populations on farmed Atlantic salmon

Revie, Crawford and Gettinby, George and Treasurer, J.W. and Wallace, C. (2005) Evaluating the effect of clustering when monitoring the abundance of sea lice populations on farmed Atlantic salmon. Journal of Fish Biology, 66 (3). pp. 773-783. ISSN 0022-1112

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Abstract

Using cluster random sampling theory and empirical estimates of the intra-class correlations for sea lice Lepeophtheirus salmonis abundances, methods on how best to sample Atlantic salmon Salmo salar from cages on farms were derived. Estimates of intra-class correlations for the abundance of the chalimus and mobile sea lice stages on Atlantic salmon in Scottish farms are given. These correlations were higher for mobile stages than for chalimus, and they had a substantive effect on increasing the number of cages and fish to be sampled for all sea lice stages. An important finding is that it is better to have a procedure that randomly samples a large number of cages using a small number of fish from each. This finding and the cluster random sampling approach have relevance to the monitoring of all marine species being farmed in cages or tanks.

Item type: Article
ID code: 2699
Keywords: sea lice, atlantic salmon, salmo salar, lepeophtheirus salmonis, cluster random sampling, Electronic computers. Computer science, Probabilities. Mathematical statistics, Aquaculture. Fisheries. Angling, Ecology, Evolution, Behavior and Systematics, Aquatic Science
Subjects: Science > Mathematics > Electronic computers. Computer science
Science > Mathematics > Probabilities. Mathematical statistics
Agriculture > Aquaculture. Fisheries. Angling
Department: Faculty of Science > Mathematics and Statistics
Faculty of Science > Computer and Information Sciences
Related URLs:
    Depositing user: Strathprints Administrator
    Date Deposited: 13 Mar 2007
    Last modified: 04 Sep 2014 13:19
    URI: http://strathprints.strath.ac.uk/id/eprint/2699

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