Saline rivers provide arid landscapes with a considerable amount of biochemically valuable production of chironomid (Diptera) larvae

Тип публикации: статья из журнала

Год издания: 2014

Идентификатор DOI: 10.1007/s10750-013-1684-5

Ключевые слова: Saline rivers, Chironomid larvae, Secondary production, Essential fatty acids, Chironomid larvae, Essential fatty acids, Saline rivers, Secondary production, arid environment, biochemical composition, emergence, fatty acid, fly, landscape, larva, primary production, salinity, secondary production, Russian Federation, Volgograd [Russian Federation]

Аннотация: Saline rivers are supposed to be 'hot spots' of high biological productivity in arid landscapes. To test this, we quantified the production of chironomid larvae, because river production is known to be transferred to arid landscapes primarily by birds fed on these larvae. In addition, we studied the potential biochemical quality of the larvae for birds based on the essential highly unsaturated fatty acid (HUFA) contents in their biomass. We studied species composition and measured production of chironomid larvae in two saline rivers (Volgograd region, Russia). We also evaluated the fatty acid composition and contents of the dominant taxa and estimated the flux of HUFA from the studied saline rivers to land via chironomid potential emergence. Average monthly production of chironomids measured for only 1 month, August, was quite comparable to annual production in some freshwater rivers. All the dominant chironomid larvae had comparatively high essential eicosapentaenoic acid contents, especially Cricotopus salinophilus, which showed the highest value, reported for Chironomidae. The monthly flux of HUFA from the studied rivers to land due to the chironomid potential emergence was roughly comparable to the global average estimation of annual water-land HUFA export via emerging insects.

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Издание

Журнал: HYDROBIOLOGIA

Выпуск журнала: Vol. 722, Is. 1

Номера страниц: 115-128

ISSN журнала: 00188158

Место издания: DORDRECHT

Издатель: SPRINGER

Авторы

  • Zinchenko T.D. (Institute of Ecology of the Volga River Basin,Russian Academy of Sciences)
  • Golovatyuk L.V. (Institute of Ecology of the Volga River Basin,Russian Academy of Sciences)
  • Gladyshev M.I. (Siberian Federal University)
  • Makhutova O.N. (Institute of Biophysics,Siberian Branch of Russian Academy of Sciences)
  • Sushchik N.N. (Siberian Federal University)
  • Kalachova G.S. (Institute of Biophysics,Siberian Branch of Russian Academy of Sciences)

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