sevinПОВОЛЖСКИЙ ЭКОЛОГИЧЕСКИЙ ЖУРНАЛPovolzhskiy Journal of Ecology1684-73182541-8963Федеральное государственное бюджетное учреждение науки Институт проблем экологии и эволюции им. А. Н. Северцова РАН; Товарищество научных изданий КМК.10.35885/1684-7318-2019-3-396-401sevin-167Research ArticleКРАТКИЕ СООБЩЕНИЯSHORT COMMUNICATIONSСезонная динамика рациона прыткой ящерицы (Lacerta agilis) (Lacertidae, Reptilia) на севере Нижнего ПоволжьяSeasonal Diet Variations of the Sand Lizard (Lacerta agilis) (Lacertidae, Reptilia) in the Northern Lower-Volga Regionhttps://orcid.org/0000-0002-1003-9393ШляхтинГ. В.ShlyakhtinG. V.

410012, Саратов, Астраханская, 83.

Gennady V. Shlyakhtin.

83 Astrakhanskaya St., Saratov 410012.

biofac@sgu.ruhttps://orcid.org/0000-0002-9001-1488ТабачишинВ. Г.TabachishinV. G.

410028, Саратов, Рабочая, 24.

Vasily G. Tabachishin.

24 Rabochaya St., Saratov 410028.

tabachishinvg@sevin.ruhttps://orcid.org/0000-0001-6377-6816ЕрмохинМ. В.YermokhinM. V.

410012, Саратов, Астраханская, 83.

Mikhail V. Yermokhin.

83 Astrakhanskaya St., Saratov 410012.

yermokhinmv@yandex.ruСаратовский национальный исследовательский государственный университет имени Н.Г. ЧернышевскогоРоссияSaratov State UniversityRussian FederationСаратовский филиал Института проблем экологии и эволюции им. А.Н. Северцова РАНРоссияSaratov branch of A. N. Severtsov Institute of Ecology and Evolution, Russian Academy of SciencesRussian Federation20193112201903396401Copyright © Шляхтин Г.В., Табачишин В.Г., Ермохин М.В., 20202020Шляхтин Г.В., Табачишин В.Г., Ермохин М.В.Shlyakhtin G.V., Tabachishin V.G., Yermokhin M.V.Данная работа распространяется под лицензией Creative Commons Attribution 4.0.This work is licensed under a Creative Commons Attribution 4.0 License.https://sevin.elpub.ru/jour/article/view/167

Изучение питания Lacerta agilis основано на анализе проб содержимого желудков, собранных в окрестностях г. Саратова с апреля по сентябрь в 1981, 2003, 2007 гг. Максимальные значения суточного рациона были характерны в июле и достигали 2.5 – 2.7 г/сут., минимальные – в апреле и сентябре – 1.1 – 1.2 г/сут. Наибольшее количество пищевых объектов отмечено в мае, наименьшее – в сентябре. Выявлено, что основу питания L. agilis составляют насекомые; их частота встреч на протяжении всего периода активной жизни составляет 100%. При этом в диете преобладали представители отряда Coleoptera (число экземпляров составляло 25.4 – 40.5%, а утилизованной биомассы – 43.5 – 70.9%). Несколько ниже доля среди насекомых занимали представители Lepidoptera, Hymenoptera, Diptera и др. Причем в пищевом спектре L. agilis преобладали насекомые, хорошо летающие и быстро передвигающиеся. Сравнительно много среди объектов питания беспозвоночных с криптической окраской, а также ядовитых, жалящих и с резким запахом. Кроме того, в содержимом многих желудков были встречены растительные остатки в виде семян, листьев, элементов цветка и т.п., а также различные небольшие камешки, возможно, выполняющие роль гастролитов.

The feeding of Lacerta agilis was studied by means of the content analysis of lizards' stomachs conducted in the vicinity of Saratov City from April till September 1983, 2003 and 2007. The maximum daily diet was characteristic in July and reached 2.5–2.7 g/day, while the minimum one was in April and September (1.1–1.2 g/day). The highest and lowest numbers of food objects were recorded in May and September, respectively. Insects are the basic food objects of L. agilis, their occurrence frequency being 100% during the whole active-life period. Coleoptera representatives predominated in  the  diet  (25.4–40.5% by  number, 43.5–70.9% by  weight). The  fractions of Lepidoptera, Hymenoptera, Diptera, etc. were somewhat lower. Well-flying and quickly-moving insects predominated in the food spectrum of L. agilis. Rather many invertebrates with cryptic colour, poisonous, stinging and badly smelt ones were frequently met among the nutrition objects. Moreover, vegetable remains (seeds, leaves, flower fragments etc.) and various small stones to act probably as gastrolytes were found in many stomachs.

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The authors declare that there are no conflicts of interest present.