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Age estimation of barramundi (Lates calcarifer) over multiple seasons from the southern Gulf of Carpentaria using FT-NIR spectroscopy

Wright, C. L., Wedding, B. B., Grauf, S. and Whybird, O. J. (2021) Age estimation of barramundi (Lates calcarifer) over multiple seasons from the southern Gulf of Carpentaria using FT-NIR spectroscopy. Marine and Freshwater Research .

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Article Link(s): https://doi.org/10.1071/MF20300

Publisher URL: https://www.publish.csiro.au/paper/MF20300

Abstract

The age of whole otoliths from barramundi (Lates calcarifer) obtained from the southern Gulf of Carpentaria were estimated using Fourier transform near-infrared (FT-NIR) spectroscopy. Otoliths from 1716 barramundi collected in 2006, 2009 and 2012–2015 were used in this study. Partial least-squares regression models (PLS-R) and multiple linear regression models (MLR) were developed from the diffuse reflectance spectra and the age was obtained from traditional sectioned otoliths. Calibration models were built up over consecutive years (2012–2015) by using a subset of the samples and used to predict the age of the remaining samples and samples from the following year. Results suggest that when seasonal (temporal) variability is incorporated into the calibration model, FT-NIR has the ability to predict barramundi age (validation R2 ranged from 0.73 to 0.78; RMSEP ranged from 6.92 to 7.64 months). The predicted age class was within 1 year of the reference age in over 96% of the samples. These models were also able to predict the age of otoliths from 2006 and 2009, which were retrieved from long-term storage (validation R2 ranged from 0.77 to 0.84; RMSEP ranged from 8.66 to 10.88 months). The results from this study have shown the potential for barramundi from the southern Gulf of Carpentaria to be aged quickly and accurately by using FT-NIR.

Item Type:Article
Business groups:Horticulture and Forestry Science, Crop and Food Science, Fisheries Queensland
Additional Information:Open Access
Keywords:fish ageing, otolith, spectroscopy.
Subjects:Technology > Technology (General) > Spectroscopy > NIR (Near Infrared)
Aquaculture and Fisheries > Fisheries > Fishery resources
Aquaculture and Fisheries > Fisheries > Fishery conservation
Aquaculture and Fisheries > Fisheries > Fishery technology
Aquaculture and Fisheries > Fisheries > Fishery for individual species
Deposited On:06 Apr 2021 00:25
Last Modified:27 May 2021 10:07

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