Egg and Larval Growth Performance of Brown Trout (Salmo trutta sp.) in Commercial Farm Conditions

Year 2022, Volume: 37 Issue: 2, 100 - 104, 25.01.2022

Serhat Engin , Özgür Altan

https://doi.org/10.26650/ASE20211048408

Abstract

The aim of this study is to determine the egg and larval growth performance of brown trout (Salmo trutta sp.) at a constant high water temperature under commercial farm conditions. Eggs were taken from 450 female broodstocks with an average weight of 5.09±0.29 kg. The eggs placed in the incu-bators were observed on the 14th day and kept at a constant temperature of 12.5°C. Then larvae began to hatch on the 29th day and all the eggs were fully hatched by the 31st day. The incubation period was determined as 350 days /°C. In the study, an average survival rate was determined as 21.07%±5.16% until the end of the larval stage. A significant relationship was found between the rate of eggs that hatched and the survival rate after the larval period had ended (p<0.05). After 120 days of larval feeding, larvae weighing 0.15 g reached 9.26±1.13 g. During this period, the feed conversion rate (FCR) and specific growth rate (SGR) values were determined as 1.21±0.09 and 1.23±0.72 respectively.

Keywords

Salmo trutta sp., egg, larvae, growth

References

• Alp, A., Erer, M., & Kamalak, A. (2010). Eggs Incubation, Early Development and growth in Frys of Brown Trout (Salmo trutta macrostigma) and Black Sea Trout (Salmo trutta labrax). Turkish Journal of Fisheries and Aquatic Sciences 10: 387-394. google scholar
• Başçınar, N., & Okumuş, İ. (2004). The early development of brook trout Salvelinus fontinalis (Mitchill): Survival and growth rates of alevins. Turk. J. Vet. Anim. Sci., 28: 297-301. google scholar
• Brown, M. E. (1946). The growth of brown trout (Salmo trutta Linn.); factors influencing the growth of trout fry. J Exp Biol 118-29. [CrossRef] google scholar
• Buisson, L., Thuiller, W., Lek, S., Lim, P., & Grenouillet, G. (2008). Climate change hastens the turnover of stream fish assemblages. Global Change Biol. 2008; 14: 2232-2248. [CrossRef] google scholar
• Buisson, L. (2009). Poissons des rivieres françaises et changement climatique: impacts sur la distribution des especes et incertitudes des projections. PhD Thesis, University of Toulouse. 2009. google scholar
• Cabrita, E., Robles, V., & Herraez, P. (2009). Methods in reproductive aquaculture: marine and freshwater species, CRC Press. United States of America. [CrossRef] google scholar
• Embody, G. (1934). Relation of temperature to the incubation periods of eggs of four species of trout. T. Am. Fish. Soc. 1934; 64: 281-292. [CrossRef] google scholar
• Gjerdem, T., & Gunnes, K. (1978). Comparison of Growth Rate in Atlantic Salmon, Pink Salmon, Arctic Char, Sea Trout and Rainbow Trout Under Norwegian Farming Conditions. Aquaculture, 13: 135-141. [CrossRef] google scholar
• Grande, M., Andersen, S. (1990). Effect of temperature regimes from a deep and a surface water release on early development of Salmonids. Regul. River. Re. Manag., 5:355-360. [CrossRef] google scholar
• Halacka, K. (1995). Embryonic development of brown trout (Salmo trutta m. fario). Folia Zoologica, 44, 175-184. google scholar
• Hesthagen, T., & Johnsen, B. O. (1989). Survival and growth of summer-and autumn-stocked brown trout, Salmo trutta L, in a mountain lake, Aquac Fish Manag, 20: 329-333. [CrossRef] google scholar
• Killeen, J., Mclay, H. A., & Johnston, I. A. (1999). Development in Salmo trutta at different temperatures, with a quantitative scoring method for intraspecific comparisons. Journal of Fish Biology, 55:382-404. [CrossRef] google scholar
• Kocaman, E. M., Yüksel, A. Y., & Atamanalp, M. (2004). Some growth features of brown trout (Salmo trutta macrostigma Dumeril, 1858) Teke brook (Erzurum). Turk J Vet Anim Sci, 28: 981-989. google scholar
• Lahnsteiner, F. (2012). Thermotolerance of brown trout, Salmo trutta, gametes and embryos to increased water temperatures. J. Appl. Ichthyol. 2012; 28: 745-751. [CrossRef] google scholar
• Mueller, C. A., & Seymour, R. S. (2011). The regulation index: a new method for assessing the relationship between oxygen consumption and environmental oxygen. Physiol. Biochem. Zool. 84, 522-532. [CrossRef] google scholar
• Mueller, C. A., Eme, J., Manzon, R. G., Somers, C. M., Boreham, D. R., & Wilson, J. Y. (2015). Embryonic critical windows: changes in incubation temperature alter survival, hatchling phenotype, and cost of development in lake whitefish (Coregonus clupeaformis). J. Comp. Physiol. B. 185, 315–331. [CrossRef] google scholar
• Ojanguren, A. F., & Braña, F. (2003). Thermal dependence of embryonic growth and development in brown trout. J. Fish Biol. 2003; 62: 580– 590. [CrossRef] google scholar
• Réalis-Doyelle, E., Pasquet, A., Charleroy, D., Fontaine, P., & Teletchea, F. (2016). Strong Effects of Temperature on the Early Life Stages of a Cold Stenothermal Fish Species, Brown Trout (Salmo trutta L.). PLoS One. 2016; 11(5): e0155487. [CrossRef] google scholar
• Ricker, W. E. (1958). Handbook of computations for biological statistics of fish populations. Bulletin of Fisheries Research Board of Canada, 119, 1–300. google scholar
• Ucn (2020). Salmonidae family. The IUCN Red List of Threatened Species 2017: e.T10066A20191442 [online]. google scholar
• Wood, H. (1931). The effect of temperature on the growth and respiration of fish embryos (Salmo fario). J. Exp. Biol. 1931; 9: 271–275. [CrossRef] google scholar