Abstract
Feeding and trophic relationships have been studied for the common benthic predatory fish species of the West Kamchatka shelf in 2008—the Pacific cod Gadus macrocephalus, great sculpin Myoxocephalus polyacanthocephalus, plain sculpin M. jaok, sea raven Hemitripterus villosus, and whitespotted greenling Hexagrammos stelleri. Crustaceans and fish are the main food components of the great sculpin, plain sculpin, Pacific cod, and whitespotted greenling; sea raven feeds on the fish mostly. The ontogenetic changes of the food spectra have been tracked for all the studied species. The indexes of the food similarity evidence to the possible food competition between the Pacific cod and all the other species; however, the dissimilarity of the ecological niches may serve as the adaptation to decrease the food competition. The trophic levels of all the studied predators vary from 3.41–4.50; i.e., they are the tertiary consumers. It is justified that the Pacific cod, whitespotted greenling, plain sculpin, and great sculpin are the facultative polyphagous predators, and the sea raven is the obligate bentho- and ichthyophagous species on the West Kamchatka shelf.
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Borets, L.A., Regularities of vertical distribution of bottom fishes during summer in West Kamchatka shelf, Vopr. Ikhtiol., 1989, vol. 29, no. 3, pp. 370–376.
Borets, L.A., Donnye ikhtiotseny rossiiskogo shel’fa dal’nevostochnykh morei: sostav, struktura, elementy funktsionirovaniya i promyslovoe znacheniya (Bottom Ichthyocenes of Russian Shelf of Far Eastern Seas: Composition, Structure, Functional Elements, and Commercial Significance), Vladivostok: TINRO-Tsentr, 1997.
Chassot, E., Rouyer, T., Trenkel, V.M., and Gascuel, D., Investigating trophic level variability in Celtic Sea fish predators, J. Fish Biol., 2008, vol. 73, no. 4, pp. 763–781.
Chuchukalo, V.I., Pitanie i pishchevye otnosheniya nektona i nektobentosa v dal’nevostochnykh moryakh (Feeding and Food Relationships of Nekton and Nektobenthos in Far Eastern Seas), Vladivostok: TINRO-Tsentr, 2006.
Chuchukalo, V.I. and Napazkov, V.V., Determination of diurnal food diet and digestion rate in raptorial and benthos-feeding fishes, Izv. Tikhookean. Nauchno-Issled. Inst. Rybn. Khoz. Okeanogr., 1999, vol. 126, pp. 160–171.
Cortes, E., Standardized diet compositions and trophic levels of sharks, ICES J. Mar. Sci., 1999, vol. 56, pp. 707–717.
Gascuel, D., The trophic-level based model: a theoretical approach of fishing effects on marine ecosystems, Ecol. Model., 2005, vol. 189, pp. 315–332.
Gascuel, D., Bozec, Y.-M., Chassot, E., et al., The trophic spectrum: theory and application as an ecosystem indicator, ICES J. Mar. Sci., 2005, vol. 62, pp. 443–452.
Gascuel, D. and Pauly, D., EcoTroph: Modeling marine ecosystem functioning and impact of fishing, Ecol. Model., 2009, no. 220, pp. 2885–2898.
Giller, P.S., Community Structure and the Niche, London: Chapman and Hall, 1984.
Jiming, Y.A., Tentative analysis of the trophic levels of North Sea fish, Mar. Ecol.: Progr. Ser., 1982, vol. 7, pp. 247–252.
Martinez, N.D., Unifying ecological subdisciplines with ecosystem food webs, in Linking Species and Ecosystems, Jones, C.G. and Lawton, J.H., Eds., London: Chapman and Hall, 1995, pp. 166–177.
Metoicheskoe posobie po izucheniyu pitaniya i pishchevykh otnoshenii ryb v estestvennykh usloviyakh (Handbook on Analysis of Nutrition and Food Relationships of Fishes in Natural Conditions), Moscow: Nauka, 1974.
Napazkov, V.V., Feeding and food relationships of fishes of bottom ichthyocenes of the west of the Bering Sea, Extended Abstract of Cand. Sci. (Biol.) Dissertation, Vladivostok: TINRO-Tsentr, 2003.
Napazakov, V.V., The diet of white-spotted greenling Hexagrammos stelleri (Hexagrammidae) on the West Kamchatka shelf, J. Ichthyol., 2010, vol. 50, no. 1, pp. 100–104.
Pauly, D. and Christensen, V., Primary production required to sustain global fisheries, Nature, 1995, vol. 374, pp. 255–257.
Pauly, D., Christensen, V., Dalsgaard, J., et al., Fishing down marine food webs, Science, 1998, vol. 279, pp. 860–863.
Rukovodstvo po izucheniyu pitaniya ryb (Manual on Analysis of Fish Feeding), Vladivostok: TINRO, 1986.
Schoener, T.W., Resource partitioning in ecological communities, Science, 1974, vol. 185, no. 4145, pp. 27–39.
Shorygin, A.A., Pitanie i pishchevye otnosheniya ryb Kaspiiskogo morya (Nutrition and Food Relationships of Fishes from the Caspian Sea), Moscow: Pishchepromizdat, 1952.
Sokolovskii, A.S. and Sokolovskaya, T.T., Some feeding peculiarities of Pacific cod Gadus macrocephalus in the region of the Commander Islands, Vopr. Ikhtiol., 1995, vol. 35, no. 4, pp. 543–545.
Tokranov, A.M., Nutrition of the great sculpin Myoxocephalus polyacanthocephalus Pallas and plain sculpin M. jaok (Cuvier) (Cottidae) in coastal waters of Kamchatka, Vopr. Ikhtiol., 1986, vol. 26, no. 6, pp. 980–989.
Tokranov, A.M., Specific nutrition of bottom raptorial fishes from West Kamchatka shelf, Vopr. Ikhtiol., 1992, vol. 32, no. 2, pp. 119–128.
Tokranov, A.M., Peculiarities of biology of bottom and near-bottom fishes from different families in Cis-Kamchatka waters, Extended Abstract of Doctoral (Biol.) Dissertation, Petropavlovsk-Kamchatskii: Kamchat. Fil., Tikhookean. Inst. Geogr., Dal’nevost. Otd., Ross. Akad. Nauk, 2009.
Tokranov, A.M. and Vinnikov, A.V., Peculiarities of nutrition of Atlantic cod Gadus morhua macrocephalus and its place in trophic system of coastal waters of Kamchatka, Vopr. Ikhtiol., 1991, vol. 31, no. 2, pp. 253–266.
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Original Russian Text © V.V. Napazakov, 2015, published in Voprosy Ikhtiologii, 2015, Vol. 55, No. 1, pp. 63–73.
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Napazakov, V.V. Trophic status and trophic interactions of common predatory fish species of the West Kamchatka shelf. J. Ichthyol. 55, 86–96 (2015). https://doi.org/10.1134/S0032945215010130
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DOI: https://doi.org/10.1134/S0032945215010130