References
- Ahmed, E.O., Ali, M.E., Aziz, A.A. (2011). Length-weight relationships and condition factors of six fish species in Atbara River and Khashm el-Girba Reservoir, Sudan. International Journal of Agriculture Sciences, 3(1), 65-70.
- Aminisarteshnizi, M., Moyo, A.G. (2022). Condition Factor and Length Relationship of Scardinius erythrophtalmus (Linnaeus, 1758) in Anzali Lagoon. Pakistan Journal of Biological Sciences, 25(10), 899-904.
- Arslan, M., Yildrim, A., Bektas, S. (2004). Length-Weight of Brown trout, Salmo trutta L., inhabiting Kan Steam, Coruh Basin, North-Eastern Turkey. Turkish Journal of Fisheries and Aquatic Sciences, 4, 45-48.
- Bache, S., Wickham, H. (2025). magrittr: A Forward-Pipe Operator for R. Available from https://CRAN.R-project.org/package=magrittr.
- Barnham, C., Baxter, A. (1998). Condition factor, K, for salmonid fish. Fisheries Notes, FN0005 ISSN 1440-2254.
- Bartel, R., Pachur, M., Bernaś, R. (2010). Distribution, migrations, and growth of tagged sea trout released into the Vistula River. Archives of Polish Fisheries, 18, 225-237.
- Bernaś, R., Dębowski, P., Bartel, R., Radtke, G., Miller, M., Skóra, M. (2009). Occurrence of juvenile salmon Salmo salar L., from natural spawning in the Słupia River (northern Poland). Archives of Polish Fisheries, 17, 317-321.
- Bernaś, R., Wąs-Barcz, A., Radtke, G. (2019). Age and growth of sea trout, Salmo trutta L., from new commercial catches in the lower Vistula River. Fisheries & Aquatic Life, 27, 72-79.
- Borzęcka, I. (2001). Growth of Vistula sea trout (Salmo trutta m. trutta L.) based on adults caught in the Vistula River prior to the construction of the dam in Wloclawek. Bulletin of the Sea Fisheries Institute, 2(153), 3-12.
- Borzęcka, I. (2003). Characteristics of sea trout (Salmo trutta m. trutta) from the Drwęca River based on scale samples collected between 1988-1992. Archives of Polish Fish-eries, 11(2), 165-172.
- Ciepliński, M., Kasprzak, M., Grandtke, M., Giertych, M.J., Steliga, A. (2018). Pattern of secondary infection with Saprolegnia spp. wild spawners of UDN-affected sea trout Salmo trutta m. trutta (L.), the Słupia River, Poland. Oceanological and Hydrobiological Studies, 47(3), 230-238.
- Das, M., Mandal, S., Bhanja, A., Mandal, B. (2023). Morphomeristic Characteristics, Length-Weight Relationship, and Condition Factors of One Stripe Sipny Eel, Macrognathus aral (Bloch and J.G. Schneider, 1801). Research Journal of Agricultural Sciences, 14(1), 131-138.
- Degerman, E., Leonardsson, K., Lundqvist, H. (2012). Coastal migrations, temporary use of neighboring rivers, and growth of sea trout (Salmo trutta) from nine northern Baltic Sea rivers. ICES Journal of Marine Science, 69, 971-980.
- Dębowski, P. (2018). The largest Baltic population of sea trout (Salmo trutta L.): its decline, restoration attempts, and current status. Fisheries & Aquatic Life, 26, 81-100.
- Durrani, O. (2023). Do the length-weight relationships and condition factors of farmed rainbow trout, brook, and brown trout differ from their wild counterparts? Aquatic Research, 6(4), 253-259.
- Fox, J., Weisberg, S. (2019). An R Companion to Applied Regression. Available from https://CRAN.R-project.org/package=car.
- Froese, R. (2006). Cube law, condition factor and weight--length relationships: history, meta-analysis and recommendations. Journal of Applied Ichthyology, 22, 241-253.
- Froese, R., Pauly, D. (2025). FishBase. World Wide Web electronic publication. www.fishbase.org, (4/2025).
- Froese, R., Tsikliras, A., Stergiou, K. (2011). Editorial note on weight–length relations of fishes. Acta Ichthyologica et Piscatoria, 41(4), 261-263.
- Grudniewska, J., Bartel, R., Bernaś, R., Ciżmowski, L., Jesiołowski, M., Kacperska, B., Kazuń, B., Marczyński, A., Sarabura, T., Pender, R., Połomski, S., Skóra, M., Sobocki, M., Terech-Majewska, E., Wołyński, P., Siwicki, A.K. (2011). Pathological changes in the skin of salmon, Salmo salar, and sea trout, Salmo trutta trutta, spawners from some Pomeranian rivers in 2009. Komunikaty Rybackie, 121(2), 7-12 (in Polish).
- Henard, C., Saraiva, M.R., Ściślak, M.E., Ruba, T., McLaggan, D., Noguer, P., van West, P. (2022). Can Ulcerative Dermal Necrosis (UDN) in Atlantic salmon be attributed to ultraviolet radiation and secondary Saprolegia parasitica infections? Fungal Biology Reviews, 40, 70-75.
- Jisr, N., Younes, G., Sukhn, C., El-Dakdouki, M.H. (2018). Length-weight relationships and relative condition factor of fish inhabiting the marine area of the Eastern Mediterranean city, Tripoli-Lebanon. Egyptian Journal of Aquatic Research, 44(4), 299-305.
- Kazuń, B., Terech-Majewska, E., Grudniewska, J., Kazuń, K. (2023). UDN-like disease in spawners of salmonid fishes from the Rega, Parsęta, Wieprza, and Słupia rivers in 2009-2012. Fisheries & Aquatic Life, 31, 64-71.
- Kurhalyuk, N., Tkaczenko, H., Pałczyńska, K. (2009). Antioxidant enzymes profile in the Brown trout (Salmo trutta trutta) with ulcerative dermal necrosis. Bulletin of the Veterinary Institute in Pulawy, 53, 813-818.
- Kurhalyuk, N., Tkaczenko, H., Pałczyńska, K. (2011). Resistances of erythrocytes from Brown trout (Salmo trutta m. trutta L.) affected by ulcerative dermal necrosis syndrome. Polish Journal of Veterinary Sciences, 14(3), 443-448.
- Latiu, C., Constantinescu, R., Miresan, V., Nicula, A.-S., Dumitras, D. E., Papuc, T., Cocan, D. (2022). Length-Weight Relationship and Fulton Condition Factor (K) of Freshwater Fish Species from the Ruscova River, Spawning Ground of Danube Salmon Hucho huco, Linnaeus, 1758 (Pisces: Salmonidae). Scientific Papers. Series D. Animal Science, 65: 607-611.
- Le Cren, E.D. (1951). The Length-Weight Relationship and Seasonal Cycle in Gonad Weight and Condition in the Perch (Perca fluviatilis). Journal of Animal Ecology, 20, 201-219.
- Matras, M., Stachnik, M., Kycko, A., Wasiak, M., Paździor, E., Maj-Paluch, J., Borzym, E., Reichert, M. (2024). Etiology of Ulcerative Dermal Necrosis (UDN) in Brown Trout (Salmo trutta morpha trutta). Pathogens, 13, 251-255.
- Matraszek-Żuchowska, I., Kłopot, A., Witek, S., Pękala-Safińska, A., Posyniak, A. (2022). Development of Analytical Procedure for the Determination of 17β-Testosterone, 11-Ketotestosterone and 17β-Estradiol in the Sea Trout (Salmo trutta L.) Gonads. Separations, 9, 293-308.
- Mazlum, R. E., Turan, D. (2018). Length-Weight Relationship for Twelve Species of the Genus Salmo L., 1758 (Actinopterygii: Salmonidae) from Inland Waters of Turkey. Acta Zoologica Bulgarica, 70(3), 407-413.
- Mazumder, S.K., Das, S.K., Bakar, Y., Ghaffar, M.A. (2016). Effects of temperature and diet on length-weight relationship and condition factor of the juvenile Malabar blood snapper (Lutjanus malabaricus Bloch & Schneider, 1801). Journal of Zhejiang University-SCIENCE B, 17, 580-590.
- Muddasir, J., Neelofar, J., Imtiaz, A. (2018). Length Weight Relationship (LWR) and Condition Factor (K) of Brown Trout, Salmo trutta fario. Journal of Ecophysiology and Occupational Health, 18(3-4), 73-79.
- Munro, A.L.S. (1970). Ulcerative dermal necrosis, a disease of migratory salmonid fishes in the rivers of the British Isles. Biological Conservation, 2(2), 129–132.
- Nash, R. D. M., Valencia, A. H., Geffen, A. J. (2006). The origin of Fulton’s condition factor–setting the record straight. Fisheries, 31(5), 236-238.
- Nehemia, A., Maganira, J.D., Rumisha, C. (2012). Length-Weight relationship and condition factor of tilapia species grown in marine and fresh water ponds. Agriculture and Biology Journal of North America, 3(3), 117-124.
- Noga, E.J. (2000). Skin ulcers in fish: Pfiesteria and Other Etiologies. Toxicologic Pathology, 28(6), 807-823.
- Nowak, M., Popek, W., Jagusiak, W., Deptuła, S., Popek, J., Tatoj, K., Klęczar, K., Epler, P. (2009). Weight-length relationships for three fishes (Leuciscus leuciscus, Phoxinus phoxinus, Salmo trutta) from the Strwiąż River (Dniestr River drainage). Archives of Polish Fisheries, 17, 313-316.
- Ogle, D.H. (2016). Introductory Fisheries Analyses with R, CRC Press, Ashland, WI, USA, 131-167.
- Ogle, D.H. (2022). FSAmisc: Miscellaneous functions for simple fisheries stock assessment methods. R package version 0.0.3. Available from https://github.com/droglenc/FSAmisc.
- Ogle, D.H., Doll, J.C., Wheeler, A.P., Dinno, A. (2025). FSA: Simple Fisheries Stock Assessment Methods. Available from https://CRAN.R-project.org/package=FSA.
- Pilecka-Rapacz, M. (2011). The age and size structure of the spawning sea trout population in the Pomeranian rivers in 1999. Rocznik Ochrona Środowiska, 13, 1507-1517 (in Polish).
- R Core Team (2025). R: A Language and Environment for Statistical Computing. R Foundation for Statistical Computing, Vienna, Austria, R Foundation for Statistical Computing. Available from: https://www.R-project.org.
- Ragheb, E. (2023). Length-weight relationship and well-being factors of 33 fish species caught by gillnets from the Egyptian Mediterranean waters off Alexandria. The Egyptian Journal of Aquatic Research, 49, 361-367.
- Rajkowska-Myśliwiec, M., Prostanowski, M., Tański, A., Watrak, S. (2022). Heavy Metals and the Occurrence of Ulcerative Dermal Necrosis (UDN) in Sea Trout from the River Rega, Poland – Consumer Health Assessment. International journal of environmental research and public health, 19, 2296-2309.
- Rawat, M.S., Bantwan, B., Singh, D., Gusain, O.P. (2014). Length-weight relationship and condition factor of brown trout (Salmo trutta fario L.) from River Asiganga, Uttarakhand (India). Environment Conservation Journal, 15(3), 41-46.
- Ricker, W.E. (1975). Computation and Interpretation of Biological Statistics of Fish Populations. Bulletin of the Fisheries Research Board of Canada, 191, 1-382.
- Roberts, R.J. (1993). Ulcerative dermal necrosis (UDN) in wild salmonids. Fisheries Research, 17(1-2), 3-14.
- Rodríguez-García, C., Castro-Gutiérrez, J., Domínguez-Bustos, Á.R., García-González, A., Cabrera-Castro, R. (2023). Every Fish Counts: Challenging Length–Weight Relationship Bias in Discards. Fishes, 8(5), 222.
- 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). Biological Forum – An International Journal, 14, 175-179.
- Stokowski, M., Sobieraj, W., Kulczykowska, E. (2023). Potential role of climate change on the spread of salmonid skin condition: the biogeochemical hypothesis on ulcerative dermal necrosis on the Słupia River – Poland. Frontiers in Marine Science, 10, 1104436
- Tanir, O.Z., Fakioglu, O. (2017). Density, Biomass and Length-Weight Relationship of Brown Trout (Salmo trutta Linnaeus, 1758) Population in the Coruh River basin, North-Eastern Anatolia, Turkey. Journal of Limnology and Freshwater Fisheries Research, 3(3), 129-136.
- Verreycken, H., van Thuyne, G., Belpaire, C. (2011). Length-weight relationships of 40 freshwater fish species from two decades of monitoring in Flanders (Belgium). Journal of Applied Ichthyology, 27, 1416-1421.
- Wickham, H., François, R., Henry, L., Müller, K., Vaughan, D. (2023). dplyr: A Grammar of Data Manipulation. Available from https://CRAN.R-project.org/package=dplyr.