Musk, R., Britton, J.R. and Axford, S. N., 2006. The Effect of Subjective Fish Scales Ageing on Growth and Recruitment Analyses: A Case Study from the UK. Acta Ichthyologica et Piscatoria, 36 (1), pp. 81-84.
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Official URL: http://www.aiep.pl/volumes/2000/6_1/pdf/12.pdf
Re-ageing of scales sampled in 1985 from the population of roach, Rutilus rutilus (L.), of the River Stour, England, revealed a high degree of subjectivity in their ageing, resulting from contrasting interpretations of similar scale features between practitioners. Compared with ages attained in 1985, re-ageing of the scales in 2004 only found agreement >80% at ages 1, 2, and 4 years. By age 9, agreement had dropped to 6%. The re-ageing revealed the presence of year classes that had previously been thought to have already died out and suggested their recruitment strength was associated with water temperatures in the first year of life of cohorts.
|Subjects:||Geography and Environmental Studies|
Science > Biology and Botany
|Group:||School of Applied Sciences > Centre for Conservation, Ecology and Environmental Change|
|Deposited By:||INVALID USER|
|Deposited On:||28 Nov 2008 18:41|
|Last Modified:||07 Mar 2013 14:58|
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