Skip to main content Accessibility help
×
Home

How to assess fin damage in rainbow trout, Oncorhynchus mykiss?

  • Jeannine Person-Le Ruyet (a1), Nicolas Le Bayon (a1) and Sylvie Gros (a1)

Abstract

Fin condition was examined in 100–500 g hatchery-reared rainbow trout sampled in a large range of environmental conditions of an experimental farm. A method that is simple to use, requires little training, and does not need costly sophisticated equipment or reference to a model is proposed to assess fin erosion (defined as a decrease in size and profile alteration of fins). A procedure to reliably measure the length of the longest ray present in two selected fins (dorsal and pectoral) is described. Fin general profile is assessed using five levels of erosion based on the precise rank of intact or eroded rays to limit subjective bias. The suitability of the two descriptors of fin erosion under laboratory, farm or field conditions is discussed.

Copyright

Corresponding author

References

Hide All
[1] Arndt, R.E., Routledge, M.D., Wagner, E.J., Mellethin, R.F., 2002, The use of Aquamasts® to enhance growth and improve fin condition among raceway cultured rainbow trout Oncorhynchus mykiss (Walbaum). Aquac. Res. 33, 359-367.
[2] Ashley, P.J., 2007, Fish welfare: current issues in aquaculture. Appl. Anim. Behav. Sci. 104, 199-235.
[3] Barrows F.T., Lellis W.A., 1999, The effect of dietary protein and lipid source on dorsal fin erosion in rainbow trout, Oncorhynchus mykiss. Aquaculture 180, 167-175.
[4] Bosakowski, T., Wagner, E.J., 1994, Assessment of fin erosion by comparison of the relative fin length in hatchery and wild brown trout in Utah. Can. J. Fish. Aquat. Sci. 51, 636-641.
[5] Bosakowski, T., Wagner, E.J., 1995, Experimental use of cobble substrates in concrete raceways for improving fin condition of cutthroat (Oncorhynchus clarki) and rainbow trout (O. mykiss). Aquaculture 130, 159-165.
[6] Danner, G.R., Boucher, D.P., 2005, Relative pectoral fin length distinguishes between brook trout and landlocked Atlantic salmon fry. Northeast. Nat. 12, 503-508.
[7] Ellis, T., North, B.P., Scott, A.P., Bromage, N.R., Porter, M.J., Gadd, D., 2002, The relationships between stocking density and welfare in farmed rainbow trout. J. Fish Biol. 61, 493-531.
[8] Geode, R.W., Barton, B.A., 1990, Organismic indices and an autopsy-based assessment as indicators of health and condition of fish. Am. Fish. Soc. Symp. 8, 93-108.
[9] Hoyle I., Oidtmann B., Ellis T., Turnbull J., North B., Nikolaidis J, Knowles T.G., 2007, A validated macroscopic key to assess fin damage in farmed rainbow trout (Oncorhynchus mykiss). Aquaculture (in press).
[10] Huntingford, F.A., Adams, C.E., Braithwaite, V.A., Kadri, S., Pottinger, T.G., Sandoe, P., Turnbull, J.F., 2006, Current issues in fish welfare. J. Fish Biol. 68, 332-372.
[11] Kindschi, G.A., 1987, Method for quantifying degree of fin erosion. Prog. Fish Cult. 49, 314-315.
[12] Latremouille, D.N., 2003, Fin erosion in aquaculture and natural environments. Rev. Fish. Sci. 11, 315-335.
[13] Pelis, R.M., McCormick, S.D., 2003, Fin development in stream- and hatchery-reared Atlantic Salmon. Aquaculture 220, 525-536.
[14] St Hilaire, S., Ellis, T., Cooke, A., North, B.P., Turnbull, J.F., Knowles, T., Kestin, S., 2006, Fin erosion on rainbow trout on commercial trout farms in the United Kingdom. Vet. Record 159, 446-451.
[15] Turnbull, J.F., Bell, A., Adams, C.E., Bron, J., Huntingford, F.A., 2005, Stocking density and welfare of cage farmed Atlantic salmon: application of a multivariate analysis. Aquaculture 243, 121-132.
[16] Zimmerman, M.S., Krueger, C.C., Eshenroder, R.L., 2006, Phenotypic diversity of lake trout in great slave lake: differences in morphology, buoyancy, and habitat depth. Trans. Am. Fish. Soc. 135, 1056-1067.

Keywords

How to assess fin damage in rainbow trout, Oncorhynchus mykiss?

  • Jeannine Person-Le Ruyet (a1), Nicolas Le Bayon (a1) and Sylvie Gros (a1)

Metrics

Full text views

Total number of HTML views: 0
Total number of PDF views: 0 *
Loading metrics...

Abstract views

Total abstract views: 0 *
Loading metrics...

* Views captured on Cambridge Core between <date>. This data will be updated every 24 hours.

Usage data cannot currently be displayed