Wing and body size polymorphism in populations of the stonefly Arcynopteryx dichroa McL. (Plecoptera: Perlodidae) in the Ural Mountains, Russia

  • Olga A. Loskutova Institute of Biology, Komi Scientific Center, Ural Branch of Russian Academy of Science
  • Lidia A. Zhiltzova Institute of Zoology of Russian Academy of Science
Keywords: Wing length, short-winged population, Urals, mountain lakes, latitude, isolation

Abstract

Specimens from five Arcynopteryx dichroa (McL.) populations were examined to study wing length and body size at different latitudes and altitudes. In northern Europe, female A. dichroa are usually long winged, while males are short winged. During the past 20 years, only two short-winged populations have been found, in a nameless lake, herein called Lake Ozernoe, and in Bolshaya Lagorta Lake, in Russia’s Ural Mountains. In the isolated population of Ozernoe Lake (850 m a.s.l.), both sexes were micropterous. In Bolshaya Lagorta Lake (380 m a.s.l.), females were brachypterous. However, at a higher altitude (560 and 760 m a.s.l.), a population was found with macropterous females. Specimens of both short-winged populations had smaller body length than long-winged populations. Our findings give limited support to the idea that stonefly wings are reduced with altitude and latitude and more support to the supposition that small wing size is associated with population isolation resulting from lengthy geological isolation.

Keywords: Wing length; short-winged population; Urals; mountain lakes; latitude; isolation.

(Published: 21 April 2016)

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Citation: Polar Research 2016, 35, 26596, http://dx.doi.org/10.3402/polar.v35.26596

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Author Biography

Olga A. Loskutova, Institute of Biology, Komi Scientific Center, Ural Branch of Russian Academy of Science
Komi Republic
Published
2016-04-21
How to Cite
Loskutova, O., & Zhiltzova, L. (2016). Wing and body size polymorphism in populations of the stonefly <em>Arcynopteryx dichroa </em&gt;McL. (Plecoptera: Perlodidae) in the Ural Mountains, Russia. Polar Research, 35. https://doi.org/10.3402/polar.v35.26596
Section
Research/review articles