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- Age_class_structure abstract "Age class structure in fisheries and wildlife management is a part of population assessment. Age can be determined by counting growth rings in fish scales, otoliths, cross-sections of fin spines for species with thick spines such as triggerfish, or teeth for a few species. Each method has its merits and drawbacks. Fish scales are easiest to obtain, but may be unreliable if scales have fallen off of the fish and new ones grown in their places. Fin spines may be unreliable for the same reason, and most fish do not have spines of sufficient thickness for clear rings to be visible. Otoliths will have stayed with the fish throughout its life history, but obtaining them requires killing the fish. Also, otoliths often require more preparation before ageing can occur.".
- Age_class_structure wikiPageID "2855101".
- Age_class_structure wikiPageRevisionID "555754158".
- Age_class_structure hasPhotoCollection Age_class_structure.
- Age_class_structure subject Category:Fisheries_science.
- Age_class_structure subject Category:Population_ecology.
- Age_class_structure comment "Age class structure in fisheries and wildlife management is a part of population assessment. Age can be determined by counting growth rings in fish scales, otoliths, cross-sections of fin spines for species with thick spines such as triggerfish, or teeth for a few species. Each method has its merits and drawbacks. Fish scales are easiest to obtain, but may be unreliable if scales have fallen off of the fish and new ones grown in their places.".
- Age_class_structure label "Age class structure".
- Age_class_structure sameAs m.08720r.
- Age_class_structure sameAs Q4691857.
- Age_class_structure sameAs Q4691857.
- Age_class_structure wasDerivedFrom Age_class_structure?oldid=555754158.
- Age_class_structure isPrimaryTopicOf Age_class_structure.