Abstract
Cold hardiness of the Arctic ensign scale Arctorthezia cataphracta, which is widely distributed in the Holarctic and penetrates farther north than any other scale insect up to zonal tundra, was studied in the upper Kolyma River basin. Similar to other representatives of the suborder, A. cataphracta overwinters at different developmental stages, which does not require completion of the life cycle during one warm season and reduces its dependence on the amount of heat during summer. Similar to the other scale insects studied, A. cataphracta cannot survive soft tissue freezing and overwinters in the supercooled state. The mean supercooling point equals–32°C, the lowest tolerable temperature under long-term exposure is about–25°C, and the content of antifreeze polyols is up to 7%. These characteristics are closer to those of some boreal scale insects, whose northern distribution boundaries lie much farther south. The successful expansion of this species to the north is facilitated by its feeding on fungal hyphae and overwintering in the microhabitats sheltered beneath the vegetation cover and snow.
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References
Alfimov, A.V., “The Thermal Regime of the Upper Soil Layers in the Main Ecosystems of the Sparse Forest Belt of the Upper Kolyma Basin,” in The Sparse Forest Belt of the Upper Reaches of the Kolyma (the Area of Construction of Kolyma Hydroelectric Station (Far Eastern Sci. Center, Acad. Sci. USSR, Vladivostok, 1985), pp. 9–29 [in Russian].
Alfimov, A.V., “The Distribution of Minimum Temperatures in the Upper Soil Layer underneath the Snow in Northern Eurasia,” Pochvovedenie 4, 438–445 (2005).
Berman, D.I., Meshcheryakova, E.N., Alfimov, A.V., and Leirikh, A.N., ““Distribution of the Earthworm Dendrobaena octaedra (Lumbricidae, Oligochaeta) in the Northern Holarctic is Limited by Its Insufficient Freezing Tolerance,” Zool. Zh. 81 (10), 1210–1221 (2002) [Entomol. Rev. 82 (Suppl. 1), 50–61 (2002)].
Berman, D.I., Alfimov, A.V., Zhigulskaya, Z.A., and Leirikh, A.N., Overwintering and Cold Hardiness of Ants in the Northeast of Asia (Pensoft, Sofia-Moscow, 2010), p. 294.
Chernov, Yu.I., The Structure of the Animal World of the Subarctic (Nauka, Moscow, 1978) [in Russian].
Danzig, E.M., Scale Insects of the Far East of the USSR (Homoptera, Coccinea). (With an Analysis of Phylogeny of Scale Insects of the World Fauna).Keys to the Fauna of the USSR Published by the Zoological Institute ANSSSR. Vol. 24 (Nauka, Leningrad, 1980) [in Russian].
Danzig, E.M., “Suborder Coccinea—Scale Insects,” in The Key to Insects of the Far East of the USSR. Vol. II. Homoptera and Heteroptera (Nauka, Leningrad, 1988), pp. 686–727 [in Russian].
Low temperature biology of insects, Ed. by Denlinger, D.L., and Lee, R.E. (Cambridge Univ., New York, 2010), 390+xiv pp.
Schmutterer, H., “Die Ökologie der Cocciden (Homoptera, Coccoidea) Frankens,” Zeitschrift für Angewandte Entomol. 33 (3), 369–420.
Sheldeshova, G.G., “The Significance of Freeze Tolerance in the Distribution of Scale Insects (Homoptera, Coccoidea),” in Problems of Insect Photoperiodism and Diapause (Leningrad State Univ., Leningrad, 1972), pp. 51–74 [in Russian].
The North of the Far East, Ed. by Shilo, N.A. (Nauka, Moscow, 1970) [in Russian].
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Original Russian Text © A.N. Leirikh, 2015, published in Zoologicheskii Zhurnal, 2015, Vol. 94, No. 12, pp. 1408–1412.
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Leirikh, A.N. Cold hardiness of the arctic ensign scale Arctorthezia cataphracta (Homoptera, Ortheziidae) in the Northeast of Asia. Entmol. Rev. 95, 1061–1065 (2015). https://doi.org/10.1134/S0013873815080126
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DOI: https://doi.org/10.1134/S0013873815080126