alexa Abstract | Age Determination of Mirror Carp (Cyprinus carpio L.,1758) on Otoliths with Broken and Burnt Method

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Abstract

In this study, whole otolith ages and broken-burnt otolith ages of 167 mirror carps (Cyprinus carpio) that live in Keban Dam Lake were determined and similarities and differences were showed on graphs and tables. Annulus could not read in 9 of the whole otoliths before the broken-burnt process but in the same otoliths, annulus could read easily after the broken-burnt process. Thats why population size were taken as 158 when comparing the ages before and after the broken-burnt process. Age differences between the two methods found out as 2 at most and consistence ratio between them determined as 70.89 %. Inconsistency ratio determined as 22.78 for age difference 1 and 6.33 % for age difference 2. Annulus could read easily from the surfaces of otoliths but when the age of otoliths increased visibility of annulus started to decrease. But after broken-burnt process annulus of the same otoliths could be seen easily and otoliths whose annulus could not read, read easily after this process.

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Author(s): Rahmi AYDIN

Keywords

Cyprinus carpio, otolith, broken and burnt method, Keban Dam Lake, Fisheries management, Aquatic (both freshwater and marine) systems, Fresh water fisheries, Brackish water fisheries

 
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