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A Comparison of the Use of Cleithra to the Use of Scales for Age and Growth Studies
Author(s) -
Harrison Edward J.,
Hadley Wayne F.
Publication year - 1979
Publication title -
transactions of the american fisheries society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.696
H-Index - 86
eISSN - 1548-8659
pISSN - 0002-8487
DOI - 10.1577/1548-8659(1979)108<452:acotuo>2.0.co;2
Subject(s) - fish <actinopterygii> , demography , scale (ratio) , sample (material) , age groups , geography , biology , fishery , cartography , physics , sociology , thermodynamics
Cleithra and scales were obtained from each of 110 muskellunge captured by anglers in the Niagara River. The results obtained from cleithral age‐and‐growth analysis were compared to those from a similar scale analysis. Ages agreed on 87% of the sample. When ages disagreed, it was most often judged that the cleithral age was correct. Fish older than IX+ years could not be aged from scales, but cleithra were useful for fish as old as XVI+ years. Lengths back‐calculated from the two techniques were statistically (95% level) equivalent at all ages except age I.