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Multimethod approach to advance provenance determination of fish in stocked systems

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Leahy, S. M., Jerry, D. R., Wedding, B. B., Robins, J. B., Wright, C. L., Sadekov, A., Boyle, S., Jones, D. B. J., Williams, S. M., Grauf, S., Pavich, L., McLennan, M., Sellin, M. J., Goldsbury, J. A. and Saunders, R. J. (2023) Multimethod approach to advance provenance determination of fish in stocked systems. Canadian Journal of Fisheries and Aquatic Sciences, 80 (9). pp. 1410-1424.

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Article Link: https://doi.org/10.1139/cjfas-2022-0292

Publisher URL: https://cdnsciencepub.com/doi/abs/10.1139/cjfas-2022-0292


Fish stocking occurs in aquatic systems for conservation purposes, to create or enhance recreational fisheries and to enhance wild-catch commercial fisheries. Identifying and quantifying the contribution of stocking efforts to wild populations is crucial to informing these management objectives. Provenance determination methods trade off accuracy, replicability, and cost-effectiveness at fishery-relevant scales. We present and assess multiple methods for provenance determination using a case study of barramundi (Lates calcarifer) in the Dry Tropics region of northern Australia. A novel application of near-infrared spectroscopy (NIRS) is compared to two established methods for fish provenance, otolith microchemistry and genetic parentage analysis using microsatellites. The otolith microchemistry method was able to provide extremely high provenance resolution (>99% accuracy). The microsatellite parentage analysis method had a slightly lower overall accuracy (95%), likely as a result of genetic introgression in this region. Provenance determination using otolith NIRS had the lowest overall accuracy (76%). Once limitations regarding spectral noise, image resolution, and sample size are addressed, NIRS may have potential for cost-effectively determining provenance in fish.

Item Type:Article
Corporate Creators:Department of Agriculture and Fisheries, Queensland
Business groups:Animal Science, Crop and Food Science
Keywords:barramundi,Lates calcarifer,provenance,natal origin,fish stocking,stock enhancement,otolith microchemistry,NIRS,microsatellite parentage analysis
Subjects:Technology > Technology (General) > Spectroscopy > NIR (Near Infrared)
Science > Biology > Genetics
Aquaculture and Fisheries > Fisheries > Fishery resources
Aquaculture and Fisheries > Fisheries > Fishery conservation
Aquaculture and Fisheries > Fisheries > Fishery research
Agriculture > By region or country > Australia > Queensland
Live Archive:05 Oct 2023 22:20
Last Modified:23 Oct 2023 01:41

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