alexa In-season Forecast of Chum Salmon Return Using Smoothin
ISSN: 2150-3508

Fisheries and Aquaculture Journal
Open Access

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Research Article

In-season Forecast of Chum Salmon Return Using Smoothing Spline

Kyuji Watanabe*

Hokkaido National Fisheries Research Institute, Japan Fisheries Research and Education Agency, 2-2 Nakanoshima, Toyohira-ku, Japan

Corresponding Author:
Kyuji Watanabe
Hokkaido National Fisheries Research Institute
Japan Fisheries Research and Education Agency
2-2 Nakanoshima, Toyohira-ku, Sapporo 062-0922, Japan
Tel: 011-822-2131
Fax: 011-823-8979
E-mail: [email protected]

Received Date: January 13, 2016; Accepted Date: May 03, 2016; Published Date: May 10, 2016

Citation: Watanabe K (2016) In-season Forecast of Chum Salmon Return Using Smoothing Spline. Fish Aquac J 7:173. doi:10.4172/2150-3508.1000173

Copyright: © 2016 Watanabe K. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.



We developed an in-season forecast model of return of chum salmon for the population off the Honshu region in the Sea of Japan using the smoothing spline based on catch data obtained in fishing season. The optimal in-season model was constructed using adult return in season 8 (middle October) as an explanatory variable. Residual sum of squares of the optimal in-season model was lower than that of the pre-season forecast (sibling) model, indicating the former was more accurate than the latter. The relationship between forecast error rate in the optimal model and the cumulative proportion of return until season 8 (middle October) was positive. Yearly variation in the forecast error rate may be affected by variability in the timing of return. We provide a new and accurate forecast model of chum salmon return.


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