The impact of high commercial fishery load on biological indices of the roach (Rutilus rutilus)
AbstractAge composition, length and weight indices of the roach populations (Rutilus rutilus L.) were analyzed and compared in water bodies with the different commercial fishery loading levels. Presence of fast-growing and slow-growing forms is inherent to cyprinid fish. In Dnieper reservoirs these forms are mixed and it is difficult to separate any one of them. It is assumed that selective elimination of fast-growing forms by commercial fishing may cause accumulation of slow-growing forms in populations. On that ground, water bodies with different levels of commercial fishery pressure have been chosen to test this hypothesis. For instance, Kremenchuk Reservoir was selected as a water body with high level of commercial fishery load because it forms more than a half of roach commercial catching in Ukraine. On the contrary, “Dniprovsko-Orilskiy” Natural Reserve was taken as a water body where human impact is minimum. Subsequently, comparing of the basic biological features of the roach from water bodies with different commercial fishery load illustrated the value of the study. It is found that the roach age range in Kremenchuk Reservoir is much higher than in subordinate waters of the Natural Reserve fund. Namely, the roach population in Kremenchuk Reservoir consisted of seventeen age groups while in “Dniprovsko-Orilskiy” Natural Reserve it comprised ten age groups only. However, size-weight features of species under study across the age groups 6+ –10+ in water bodies with the intensive commercial fishery were statistically lower than in protected waters of the Nature Reserve. Namely, length of these age groups in Kremenchuk Reservoir was equal to 24.6–33.5 cm, compared with 25.0–37.0 cm in the National Reserve. Naturally, that weight was equal to 334–957 and 340–1320 g, respectively. In general, this result does not fit into the traditional concept that the fast-growing roach should inhabit the lacustrine biocenosis of the Dnieper reservoirs. In addition, the absence of commercial fishing in waters of “Dniprovsko-Orilskiy” Natural Reserve leads to increase in number of fast-growing individuals in the population that effectively go out of predators pressure. On the other hand, high direct and indirect anthropogenic pressure cause the elimination of fast-growing individuals of the roach from population in Kremenchuk Reservoir that is proved by the curves of growth and the onset of fish-mass culmination. This study indicates that high anthropogenic pressure at present time has reached a degree which cause accumulation of stunted fish in the roach populations in Dnieper reservoirs. This is a notable effect, at least from the regulatory point of view.
Bondarev, D.L., 2006. Struktura nerestovoi' populjacii' plitky (Rutilus rutilus) vodojm Dniprovs'ko-Oril's'kogo pryrodnogo zapovidnyka [The structure of the spawning population of roach (Rutilus rutilus) in water bodies of the Dniprovsko-Orilskiy natural reserve]. Vìsn. Dnìpropetr. Unìv. Ser. Bìol. Ekol. 14(2), 20–24 (in Ukrainian).
EU intervention in inland fisheries, 2011. EU wide report – final version (Framework contract N° FISH/2006/09). Ernst & Young, www.ec.europa.eu/fisheries/documentation/studies/ inland_fisheries_en.pdf
Hayden, B., Massa-Gallucci, A., Harrod, C., O’grady, M., Caffrey, J., Kelly-Quinn, M. 2014. Trophic flexibility by roach Rutilus rutilus in novel habitats facilitates rapid growth and invasion success. J. Fish Biol. 84, 1099–1116.
Hellawell, J.M., 1972. The growth, reproduction and food of the roach Rutilus rutilus (L.), of the River Lugg, Herefordshire. J. Fish Biol. 4, 469–486. >> doi.org/10.1111/j.1095-8649.1972.tb05696.x
Hickley, P., Dexter, K.F., 1979. A comparative index for quantifying growth in length of fish. Fish. Manage. 10(4), 147–151. >> doi.org/10.1111/j.1365-2109.1979.tb00270.x
Kotovska, G.О., Rudyk-Leusska, N.Y., Khristenko, D.S., 2012. Porivnyannya produktyvnyh kharakterystyk molodi plitky (Rutilus rutilus L.) v Sulynskiy i Tsybulnytskiy zatokah Kremenchutskogo vodoshovyscha [Comparison of productive characteristics of young raoch (Rutilus rutilus L.) in Sula and Tsybulnyk bays of Kremenchug reservoir]. Bioresursy i Pryrodokorystuvannja 4(1), 101–104 (in Ukrainian).
Kottelat, M., Freyhof, J., 2007. Handbook of European freshwater fishes. Publications Kottelat, Cornol, Switzerland.
Lammens, E.H., van Nes, E.H., Meijer, M.L., van den Berg, M.S., 2004. Effects of commercial fishery on the bream population and the expansion of Chara aspera in Lake Veluwe. Ecol. Model. 177(3), 233–244. >> doi.org/10.1016/j.ecolmodel.2003.10.002
Mann, R.H.K., 1973. Observations on the age, growth, reproduction and food of the roach Rutilus rutilus (L.) in two rivers in southern England. J. Fish Biol. 5, 707–736. >> doi.org/10.1111/j.1095-8649.1973.tb04506.x
Movchan, Y.V., 2011. Ryby Ukrainy (vyznachnyk-dovidnyk) [Fish of Ukraine (Identification guide)]. Zoloti Vorota, Kyiv (in Ukrainian).
Nazarov, О.B., Kotovska, G.O., 2012. Osnovni biologichni pokaznyky plitky (Rutilus rutilus L.) Dniprodzerzhynskogo vodoshovyscha [Basic biological indicators o the roach (Rutilus rutilus L.) of Dniprodzerzhynsk reservoir. Fisheries Science of Ukraine 3–4, 80–83 (in Ukrainian).
Novitskiy, R.A., 2004. K voprosy o maksimalnyh razmerah i masse ryb v dneprovskih vodohranilisch [On the question of the maximum size and weight of the fish in the Dnieper reservoirs]. Vìsn. Dnìpropetr. Unìv. Ser. Bìol. Ekol. 12(1), 126–133 (in Russian).
Novitskiy, R.A., Yarovoy, A.G., 2000. Ulovy rybolovov Pridneprovja [Catches of anglers in the Dnieper region]. Rybnoe Hozjajstvo Ukrainy 5, 46–48 (in Russian).
Ozinkovska, S.P. (ed.), 1998. Metodyka zbory i obrobky ihtiologichnyh i hydrobiologichnyh materialiv z metoyu vyznachennya limitiv promyslovogo vyluchennya ryb z velykyh vodoshovysch i lymaniv Ukrainy [Methods of collecting and processing of ichthyological and hydrobiological materials in order to identify limits of commercial fish harvest from large reservoirs and estuaries of Ukraine]. Institute of Fisheries of NAAS of Ukraine, Кyiv (in Ukrainian).
Ozinkovska, S.P., Khrystenko, D.S., Kotovska, G.O., 2006. Dynamika vylovu osnovnyh promyslovyh vydiv ryb na Kremenchuc'komu ta Kahovs'komu vodoshovyshhah [Catch dynamics of the main commercial fish species in the Kremenchug and Kakhovka reservoirs]. Naukovyj Visnyk NAU 102, 61–67 (in Ukrainian).
Pakhomov, O.Y., Gasso, V.Y., Goloborodko, K.K., Poljakov, M.V., Grycan, Y.I., Bulakhov, V.L., Brygadyrenko, V.V., Kljuchko, Z.F., Mezhzherin, S.V., Novicky, R.O., Pysanec, Y.M., Pljushh, I.G., Ponomarenko, O.L., Puchkov, O.V., Radchenko, V.G., 2011. Chervona knyga Dnipropetrovskoi oblasti. Tvarynnyj svit [The red book of Dnipropetrovsk region. Animals]. New Print, Dnipropetrovsk (in Ukrainian).
Pakhorukov, А.М., 1980. Izuchenie raspredeleniya molodi ryb v vodohranilischah i ozerah [The study of the juvenile fish distribution in reservoirs and lakes]. Nauka, Мoscow (in Russian).
Pravdin, I.F., 1966. Rukovodstvo po izucheniyu ryb [Guidance on fish investigations]. Pischevaya Promyshlennost’, Мoscow (in Russian).
Przybylski, M., 1996. Variation in fish growth characteristics along a river cours. Hydrobiologia 325, 39–46.
Romanenko, V.D. (ed.), 2006. Metody hydroekologichnyh doslidzhen’ poverhnevyh vod [Methods of hydroecological surveying of surface waters]. Logos, Kyiv (in Ukrainian).
Rudyk-Leusska, N.Y., Kotovska, G.O., Khristenko, D.S., 2011. Porivyalnyj analiz populyatsij plitky zvychaynoyi (Rutilus rutilus L.) Kremenchutskogo ta Kyivs’kogo vodoshovysch [Comparative analysis of common roach (Rutilus rutilus L.) populations in Kremenchug and Kiev reservoirs]. Naukovi dopovidi NUBiP 5(27), 1–9 (in Ukrainian).
Spesivyj, T.V., 2004. Sravnitelnye dannye morfologicheskih priznakov populyazij plotvy (Rutilus rutilus L.) Kakhovskogo i Kremenchugskogo vodochranilisch [Comparative data on morphological characters of roach (Rutilus rutilus L.) populations of Kakhovka and Kremenchug reservoirs]. Rybne Gospodarstvo 63, 211–214 (in Russian).
Stoessel, D.J. 2014. Age, growth, condition and reproduction of roach Rutilus rutilus (Teleostei: Cyprinidae), in south-eastern Australia. Mar. Freshwater Res. 65, 275–281. >> doi.org/10.1071/MF13095
Tribiloustova, E., 2005. Freshwater fish for European Markets Globefish Research Programme. www.globefish.org/upl/ Publications/files/GRP%2082.pdf
Vyatchanina, L.I., 1973. Biologicheskie osobennosti plotvy Kremenchugskogo vodochranilischa i eje rybohozyaistvennoe znachenie [Biological features of roach of the Kremenchug Reservoir and its fishery value]. Rybnoe Hozjajstvo 16, 71–76 (in Russian).