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Novel method for shark age estimation using near infrared spectroscopy

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Rigby, C. L., Wedding, B. B., Grauf, S. and Simpfendorfer, C. A. (2016) Novel method for shark age estimation using near infrared spectroscopy. Marine and Freshwater Research, 67 (5). pp. 537-545.

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Article Link: https://doi.org/10.1071/MF15104

Publisher URL: https://www.publish.csiro.au/paper/MF15104

Abstract

Accurate age determination is an important component of assessing and managing fish populations, yet traditional ageing using growth bands is time-consuming and has limitations. In the present study, an alternative approach to shark age estimation using near infrared spectroscopy (NIRS) was investigated using two species. The ages of Sphyrna mokarran and Carcharhinus sorrah vertebrae that had been traditionally aged and validated were successfully predicted up to 10 years of age using NIRS. The correlations between the known ages of the vertebrae and their near infrared spectra were strong, with R2 values of 0.89 and 0.84 for S. mokarran and C. sorrah respectively. The major advantage of the NIRS ageing approach was the rapid speed of age estimation, which could enable large numbers of sharks to be aged quickly. This would offer the fisheries management benefit of improving the reliability of age information for stock and risk assessments.

Item Type:Article
Corporate Creators:Department of Agriculture and Fisheries, Queensland
Business groups:Crop and Food Science
Keywords:Carcharhinus sorrah, Sphyrna mokarran, vertebrae.
Subjects:Technology > Technology (General) > Spectroscopy > NIR (Near Infrared)
Aquaculture and Fisheries > Fisheries > Fishery conservation
Aquaculture and Fisheries > Fisheries > Fishery research
Aquaculture and Fisheries > Fisheries > Fishery for individual species
Agriculture > By region or country > Australia > Queensland
Live Archive:23 Oct 2023 01:36
Last Modified:23 Oct 2023 01:36

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