Research Article

A Re-assessment of the Growth Index for Quantifying Growth in Length of Fish with Application to Roach, Rutilus rutilus (L., 1758)

Volume: 2 Number: 1 April 20, 2016
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A Re-assessment of the Growth Index for Quantifying Growth in Length of Fish with Application to Roach, Rutilus rutilus (L., 1758)

Abstract

Comparative assessments of mean growth rates in length across fish populations are useful for gaining insights into the conservation, management and control of species, especially at larger scales of distribution. The purpose of this study was to refine the Growth Index (GI), a useful measure for comparing species-specific growth rates in fish. Using literature-based length-at-age data for 299 populations of roach Rutilus rutilus, a widespread freshwater fish of Eurasian distribution, the GI was calibrated and the previously semi-quantitatively defined ‘slow’, ‘average’ and ‘fast’ growth categories were quantitatively re-defined. A threshold value of 114% GI separated ‘slow’ from ‘average’ growth populations and of 155% GI ‘average’ from ‘fast’ growth populations. Slow growth rates were identified along the entire latitudinal range of the species’ distribution, whereas below ≈37ºN all types of growth were encountered, indicating the importance of waterbody-related environmental factors in affecting growth in roach. Given the relatively widespread usage of the GI, species-specific calibrations leading to improved definition of corresponding growth bands are recommended for other widespread fish species of both economic value and ecological concern.

Keywords

References

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Details

Primary Language

English

Subjects

-

Journal Section

Research Article

Publication Date

April 20, 2016

Submission Date

June 23, 2015

Acceptance Date

-

Published in Issue

Year 2016 Volume: 2 Number: 1

APA
Tarkan, A., & Vılızzı, L. (2016). A Re-assessment of the Growth Index for Quantifying Growth in Length of Fish with Application to Roach, Rutilus rutilus (L., 1758). Journal of Limnology and Freshwater Fisheries Research, 2(1), 49-58. https://doi.org/10.17216/LimnoFish-5000127509
AMA
1.Tarkan A, Vılızzı L. A Re-assessment of the Growth Index for Quantifying Growth in Length of Fish with Application to Roach, Rutilus rutilus (L., 1758). Journal of Limnology and Freshwater Fisheries Research. 2016;2(1):49-58. doi:10.17216/LimnoFish-5000127509
Chicago
Tarkan, Ali, and Lorenzo Vılızzı. 2016. “A Re-Assessment of the Growth Index for Quantifying Growth in Length of Fish With Application to Roach, Rutilus Rutilus (L., 1758)”. Journal of Limnology and Freshwater Fisheries Research 2 (1): 49-58. https://doi.org/10.17216/LimnoFish-5000127509.
EndNote
Tarkan A, Vılızzı L (April 1, 2016) A Re-assessment of the Growth Index for Quantifying Growth in Length of Fish with Application to Roach, Rutilus rutilus (L., 1758). Journal of Limnology and Freshwater Fisheries Research 2 1 49–58.
IEEE
[1]A. Tarkan and L. Vılızzı, “A Re-assessment of the Growth Index for Quantifying Growth in Length of Fish with Application to Roach, Rutilus rutilus (L., 1758)”, Journal of Limnology and Freshwater Fisheries Research, vol. 2, no. 1, pp. 49–58, Apr. 2016, doi: 10.17216/LimnoFish-5000127509.
ISNAD
Tarkan, Ali - Vılızzı, Lorenzo. “A Re-Assessment of the Growth Index for Quantifying Growth in Length of Fish With Application to Roach, Rutilus Rutilus (L., 1758)”. Journal of Limnology and Freshwater Fisheries Research 2/1 (April 1, 2016): 49-58. https://doi.org/10.17216/LimnoFish-5000127509.
JAMA
1.Tarkan A, Vılızzı L. A Re-assessment of the Growth Index for Quantifying Growth in Length of Fish with Application to Roach, Rutilus rutilus (L., 1758). Journal of Limnology and Freshwater Fisheries Research. 2016;2:49–58.
MLA
Tarkan, Ali, and Lorenzo Vılızzı. “A Re-Assessment of the Growth Index for Quantifying Growth in Length of Fish With Application to Roach, Rutilus Rutilus (L., 1758)”. Journal of Limnology and Freshwater Fisheries Research, vol. 2, no. 1, Apr. 2016, pp. 49-58, doi:10.17216/LimnoFish-5000127509.
Vancouver
1.Ali Tarkan, Lorenzo Vılızzı. A Re-assessment of the Growth Index for Quantifying Growth in Length of Fish with Application to Roach, Rutilus rutilus (L., 1758). Journal of Limnology and Freshwater Fisheries Research. 2016 Apr. 1;2(1):49-58. doi:10.17216/LimnoFish-5000127509

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