O2113.pdf (448.38 kB)
Reassembling broken otoliths for population discrimination
conference contribution
posted on 2024-01-02, 11:21 authored by Hlynur Bárðarson, Bruce McAdam, Gróa Pétursdóttir, Guðrún MarteinsdóttirNo abstracts are to be cited without prior reference to the author.
Twenty five Atlantic cod Gadus morhua otoliths were examined using eight shape measurements along with Fourier analysis of their outlines to test whether discrimination using otolith shape is affected by reassembling broken otoliths. Small differences in seven of the eight shape measurements were found between unbroken otoliths and the same otoliths after breaking and subsequently gluing together; however, none of the Fourier descriptors differed. Cluster analyses indicated that resultant morphological differences will have no impact when applying discriminant analysis.