Date of Award

Spring 5-15-2017

Document Type


Degree Name

Bachelor of Science (BS)


Marine Science


College of Science

First Advisor

Derek P. Crane


While cleithra are the most popularly used calcified structure used to estimate age of Muskellunge (Esox masquinongy), the use of fin rays as an age estimation structure has been investigated as a nonlethal alternative. My objectives were to: (1) to compare the accuracy and precision of estimating age using first pelvic, second pelvic, and fourth anal rays from 46 known age Muskellunge and (2) to analyze a larger sample (n = 120) of fourth anal rays to estimate age. Ages were estimated blindly by three readers independently from all available structures. Different analyses of precision and accuracy had conflicting results, however, I would recommend the use of either the fourth anal ray or the second pelvic ray to estimate age.

Included in

Oceanography Commons