DETERMINATION OF LENGTH, WEIGHT AND HEALTH STATUS FACTOR IN RAINBOW TROUT (Oncorhynchus mykiss WALBAUM, 1972) CULTIVATED IN THE FISH FARM IN ISTOG (PEJE REGION-KOSOVO)
DOI:
https://doi.org/10.58885/ijees.v10i1.56.giKeywords:
length, weight, health status factor, morphometry, rainbow trout.Abstract
Length, weight and health status factors were determined in rainbow trout obtained from aquaculture. The research included 136 individuals with different lengths and weights, divided into three groups. The first group included 25 individuals with a weight of >100 g, the second group 150 individuals with a weight of >150 g, and the third group 59 individuals with a weight of >200 g. The average value of the morphometric parameters was determined based on the number of individuals analysed for each group. In the first group, the average total length (TL) was 22.6 cm; in the second group, it was 24.8 cm; and in the third group, it was 27.3 cm. The average fork length (FL) in the first group was 21.1 cm, in the second group 23 cm, and in the third group 25.5 cm. The average value of body weight in the first group was 126 g; in the second group, it was 176.8 g; and in the third group, it was 227.6 g. In the group of fish weighing more than 100 g, the average value of the health status factor was 1.27; in the group of fish weighing more than 150 g, 1.36; and in the group of fish weighing more than 200 g, 1.41.
This study provides us for the first time with basic information on length, weight and health status factors for rainbow trout cultured on the Istog fish farm, which may be useful for fisheries management on other farms in Kosovo and beyond.
References
Adams, S. M., Crumby, W. D., Greeley, M. S. Jr., Shugart, L. R., & Saylor, C. F. (1992). Responses of fish populations and communities to pulp mill effluents: A holistic assessment. Ecotoxicology and Environmental Safety, 24(3), 347–360.
Ali, A. N., Dahanukar, R., & Raghavan, R. (2013). Length-weight and length-length relationship of three species of snakehead fish, Channa diplogramma, C. marulius and C. striata from the riverine reaches of Lake Vembanad, Kerala, India. Journal of Threatened Taxa, 5(13), 4769–4773.
Alam, M. M., Rahman, M. T., & Parween, S. (2014). Morphometric characters and condition factors of five freshwater fishes from Pagla River of Bangladesh. International Journal of Aquatic Biology, 2(1), 14–19.
Arslan, M., Yıldırım, A., & Bektaş, S. (2004). Length-weight relationship of brown trout, Salmo trutta L., inhabiting Kan Stream, Çoruh Basin, North-Eastern Turkey. Turkish Journal of Fisheries and Aquatic Sciences, 4, 45–48.
Asadi, H., Sattari, M., Motalebi, Y., Zamani-Faradonbeh, M., & Gheytasi, A. (2017). Length-weight relationship and condition factor of seven fish species from Shahrbijar River, Southern Caspian Sea basin, Iran. Iranian Journal of Fisheries Sciences, 16(2), 733–741.
Blackwell, B. G., Brown, M. L., & Willis, D. W. (2000). Relative weight (Wr) status and current use in fisheries assessment and management. Reviews in Fisheries Science, 8, 1–44.
Cada, G. F., Loar, J. M., & Sale, M. J. (1987). Evidence of food limitation of rainbow and brown trout in southern Appalachian soft-water streams. Transactions of the American Fisheries Society, 116, 692–702.
Campos, R. G., Pister, E. P., & Compeán-Jiménez, G. A. (1997). Age and growth of Nelson’s trout, Oncorhynchus mykiss nelsoni, from Arroyo San Rafael, Sierra San Pedro Mártir, Baja California, Mexico. The Southwestern Naturalist, 42(1), 74–85.
Carlander, K. D. (1969). Handbook of freshwater fishery biology (Vol. 1). Iowa State University Press.
Dan-Kishiya, A. S. (2013). Length-weight relationship and condition factor of five fish species from a tropical water supply reservoir in Abuja, Nigeria. American Journal of Research Communication, 1(9), 175–187.
DHTIK. (2019). OAK dhe Trofta-Istog. Dhoma e Tregtisë dhe Industrisë, Kosovë.
Ensign, W. E., Strange, R. J., & Moore, S. E. (1990). Summer food limitation reduces brook and rainbow trout biomass in a southern Appalachian stream. Transactions of the American Fisheries Society, 119, 894–901.
Esmaeili, H. R., & Ebrahimi, M. (2006). Length-weight relationships of some freshwater fishes of Iran. Journal of Applied Ichthyology, 22, 328–329.
Froese, R. (2006). Cube law, condition factor and weight-length relationships: History, meta-analysis and recommendations. Journal of Applied Ichthyology, 22(4), 241–253.
Gall, G. A. E., & Crandell, P. A. (1990). The rainbow trout. In G. A. E. Gall (Ed.), Proceedings of the First Aquaculture-Sponsored Symposium, Institute of Aquaculture, University of Stirling, Scotland (pp. 1–10). Elsevier Science Publishing.
Haimovici, M., & Velasco, G. (2000). Length-weight relationship of marine fishes from southern Brazil. Naga, The ICLARM Quarterly, 23(1), 19–23.
Iseni, G., Berisha, B., & Iseni, B. (2022). Analysis of scale and fin damage (erosion) in farmed rainbow trout in the Republic of Kosova. In 4th International Multidisciplinary Scientific Conference, Tetova, North Macedonia.
King, M. (2007). Fisheries biology, assessment and management (2nd ed.). Wiley-Blackwell.
Kwain, W. H. (1981). Population dynamics and exploitation of rainbow trout in Stokely Creek, Eastern Lake Superior. Transactions of the American Fisheries Society, 110(2), 210–215.
Laird, L. M., & Needham, T. (1988). The farmed salmonids. In L. M. Laird & T. Needham (Eds.), Salmon and trout farming (pp. 15–31). Ellis Horwood.
Murphy, K. D. (1988). Age and growth of wild rainbow trout, Salmo gairdneri, in the Kings River, Fresno County, California (Senior thesis). Humboldt State University.
Pidgeon, R. W. J. (1981). Diet and growth of rainbow trout, Salmo gairdneri Richardson, in two streams on the New England Tableland, New South Wales. Australian Journal of Marine and Freshwater Research, 32, 967–974.
Rabe, F. W. (1967). Rainbow trout in Alpine lakes. Northwest Science, 41(1), 12–22.
Seher, D., & Suleyman, C. I. (2012). Condition factors of seven cyprinid fish species from Çamlıgöze Dam Lake on Central Anatolia, Turkey. African Journal of Agricultural Research, 7(31), 4460–4464.
Shah, T. H., Balkhi, M. H., Najar, A. M., & Asimi, O. A. (2011). Morphometry, length-weight relationship and condition factor of farmed female rainbow trout (Oncorhynchus mykiss Walbaum) in Kashmir. Indian Journal of Fisheries, 58(3), 51–56.
Shah, T. H., Bhat, F. A., Bazaz, A. I., Mushtaq, S. T., & Bhat, T. H. (2022). Assessment of reproductive parameters and their relationship with some body parameters in brown trout (Salmo trutta fario).
Sigler, W. F. (1953). The rainbow trout in relation to the other fish in Fish Lake. Utah State Agricultural Experiment Station Bulletin, 358, 1–26.
Ujjania, N. C., Kohli, M. P. S., & Sharma, L. L. (2012). Length-weight relationship and condition factors of Indian major carps (Catla catla, Labeo rohita, and Cirrhinus mrigala) in Mahi Bajaj Sagar, India. Research Journal of Biology, 2(1), 30–36.
Van Woert, W. F. (1957). Time pattern of migration of adult salmon and steelhead into the upper Sacramento River during the 1956–57 season, and length-weight relationship of Sacramento River steelhead. California International Fisheries Administrator Report, 57(19), 1–5.
Wolf, K., & Rumsey, G. (1985). The representative research animal: Why rainbow trout (Salmo gairdneri Rich.). Zeitschrift für Angewandte Ichthyologie, 3, 131–138.
Wootton, R. S. (1992). Fish ecology. Thomson Litho Limited.
Zimmerman, T. (1999). Recreational fishery stock assessment 1999: Final report of Portal Lake. Ministry of Environment, British Columbia.
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