Comparison of hatchery performance attributes among three strains of age-0 coaster brook trout

Eric T. Volkman; Kevin L. Pangle; Deborah A. Rajchel; Trent M. Sutton; Dale R. Bast

doi:10.1577/A04-018.1

Comparison of hatchery performance attributes among three strains of age-0 coaster brook trout

Eric T. Volkman, Kevin L. Pangle, Deborah A. Rajchel, Trent M. Sutton, Dale R. Bast

Biology

Research output: Contribution to journal › Article › peer-review

5 Scopus citations

Abstract

The hatchery performance attributes of three strains (Lake Nipigon [Nipigon], Sis-kiwit Bay [Siskiwit], and Tobin Harbor [Tobin]) of fingerling coaster brook trout Salvelinus fon-tinalis were compared during a 12-week laboratory experiment. Despite similar initial sizes, the final mean length and weight of Nipigon fish (94.1 mm and 9.9 g) were significantly greater than those of the Siskiwit (86.7 mm and 7.7 g) and Tobin (90.4 mm and 7.2 g) strains. There were no differences in mean specific growth rates in length and weight or mean daily growth rate in length among the strains. However, there was a difference in the mean daily absolute growth rate in weight, the Nipigon and Siskiwit strains (0.10%/d and 0.08%/d, respectively) displaying a greater rate of growth than Tobin Harbor (0.07%/d) fish. Mean survival rates (range = 97-98%) and relative weights (range = 100.1-101.1 g) did not differ significantly among the three strains. Based on our results, we recommend that these strains of fingerling coaster brook trout be reared similarly in hatchery environments and that strain selection for rehabilitation stocking purposes consider hatchery residence time and the natural genetic variation of the source population of broodstock fish.

Original language	English
Pages (from-to)	278-284
Number of pages	7
Journal	North American Journal of Aquaculture
Volume	66
Issue number	4
DOIs	https://doi.org/10.1577/A04-018.1
State	Published - Oct 2004

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title = "Comparison of hatchery performance attributes among three strains of age-0 coaster brook trout",

abstract = "The hatchery performance attributes of three strains (Lake Nipigon [Nipigon], Sis-kiwit Bay [Siskiwit], and Tobin Harbor [Tobin]) of fingerling coaster brook trout Salvelinus fon-tinalis were compared during a 12-week laboratory experiment. Despite similar initial sizes, the final mean length and weight of Nipigon fish (94.1 mm and 9.9 g) were significantly greater than those of the Siskiwit (86.7 mm and 7.7 g) and Tobin (90.4 mm and 7.2 g) strains. There were no differences in mean specific growth rates in length and weight or mean daily growth rate in length among the strains. However, there was a difference in the mean daily absolute growth rate in weight, the Nipigon and Siskiwit strains (0.10%/d and 0.08%/d, respectively) displaying a greater rate of growth than Tobin Harbor (0.07%/d) fish. Mean survival rates (range = 97-98%) and relative weights (range = 100.1-101.1 g) did not differ significantly among the three strains. Based on our results, we recommend that these strains of fingerling coaster brook trout be reared similarly in hatchery environments and that strain selection for rehabilitation stocking purposes consider hatchery residence time and the natural genetic variation of the source population of broodstock fish.",

author = "Volkman, {Eric T.} and Pangle, {Kevin L.} and Rajchel, {Deborah A.} and Sutton, {Trent M.} and Bast, {Dale R.}",

note = "Funding Information: We thank the Red Cliff Tribal Hatchery and Iron River National Fish Hatchery (U.S. Fish and Wildlife Service) for providing the brook trout eggs used in this study. Constructive comments on earlier drafts by H. Quinlan, P. Brown, D. Daugherty, and P. Hrodey improved this manuscript. Funding for this study was provided by the Purdue University School of Agriculture and Department of Forestry and Natural Resources. This research was approved for publication as manuscript 17407 by the Purdue University Agricultural Research Program.",

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AU - Pangle, Kevin L.

AU - Rajchel, Deborah A.

AU - Sutton, Trent M.

AU - Bast, Dale R.

N1 - Funding Information: We thank the Red Cliff Tribal Hatchery and Iron River National Fish Hatchery (U.S. Fish and Wildlife Service) for providing the brook trout eggs used in this study. Constructive comments on earlier drafts by H. Quinlan, P. Brown, D. Daugherty, and P. Hrodey improved this manuscript. Funding for this study was provided by the Purdue University School of Agriculture and Department of Forestry and Natural Resources. This research was approved for publication as manuscript 17407 by the Purdue University Agricultural Research Program.

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N2 - The hatchery performance attributes of three strains (Lake Nipigon [Nipigon], Sis-kiwit Bay [Siskiwit], and Tobin Harbor [Tobin]) of fingerling coaster brook trout Salvelinus fon-tinalis were compared during a 12-week laboratory experiment. Despite similar initial sizes, the final mean length and weight of Nipigon fish (94.1 mm and 9.9 g) were significantly greater than those of the Siskiwit (86.7 mm and 7.7 g) and Tobin (90.4 mm and 7.2 g) strains. There were no differences in mean specific growth rates in length and weight or mean daily growth rate in length among the strains. However, there was a difference in the mean daily absolute growth rate in weight, the Nipigon and Siskiwit strains (0.10%/d and 0.08%/d, respectively) displaying a greater rate of growth than Tobin Harbor (0.07%/d) fish. Mean survival rates (range = 97-98%) and relative weights (range = 100.1-101.1 g) did not differ significantly among the three strains. Based on our results, we recommend that these strains of fingerling coaster brook trout be reared similarly in hatchery environments and that strain selection for rehabilitation stocking purposes consider hatchery residence time and the natural genetic variation of the source population of broodstock fish.

AB - The hatchery performance attributes of three strains (Lake Nipigon [Nipigon], Sis-kiwit Bay [Siskiwit], and Tobin Harbor [Tobin]) of fingerling coaster brook trout Salvelinus fon-tinalis were compared during a 12-week laboratory experiment. Despite similar initial sizes, the final mean length and weight of Nipigon fish (94.1 mm and 9.9 g) were significantly greater than those of the Siskiwit (86.7 mm and 7.7 g) and Tobin (90.4 mm and 7.2 g) strains. There were no differences in mean specific growth rates in length and weight or mean daily growth rate in length among the strains. However, there was a difference in the mean daily absolute growth rate in weight, the Nipigon and Siskiwit strains (0.10%/d and 0.08%/d, respectively) displaying a greater rate of growth than Tobin Harbor (0.07%/d) fish. Mean survival rates (range = 97-98%) and relative weights (range = 100.1-101.1 g) did not differ significantly among the three strains. Based on our results, we recommend that these strains of fingerling coaster brook trout be reared similarly in hatchery environments and that strain selection for rehabilitation stocking purposes consider hatchery residence time and the natural genetic variation of the source population of broodstock fish.

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DO - 10.1577/A04-018.1

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EP - 284

JO - North American Journal of Aquaculture

JF - North American Journal of Aquaculture

IS - 4

ER -

Comparison of hatchery performance attributes among three strains of age-0 coaster brook trout

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