Abstract
The morphological characteristics of the North American invasive species Kellicottia bostoniensis Rousselet, 1908 were studied in 29 various types of water bodies and watercourses of the Middle Volga basin. The water bodies, which are the habitats of K. bostoniensis, are located on several territories that differ significantly in a set of characteristics, such as their geological structure, relief, climate, anthropogenic impact, hydrochemical and hydrophysical indicators, etc. The sizes of K. bostoniensis individuals in most of the studied water bodies and watercourses were measured and analyzed for the first time. A high positive correlation was found between the total body length and the posterior spine length (R2 = 0.79, p < 0.01), as well as the anterior spine length (R2 = 0.75, p < 0.01). A relationship was revealed between the lengths of the anterior and posterior spines (R2 = 0.58, p < 0.01). K. bostoniensis individuals in the studied water bodies and watercourses are characterized by large sizes, the median values of the total body length being 236–440 μm. These sizes are similar to those of individuals in the native habitats of North America and some biotopes of Europe and European Russia. Among the previously studied water bodies of Russia and other countries (Belarus, Sweden, Finland, Brazil, and Argentina), where researches of the morphological variability of K. bostoniensis were carried out, the largest body sizes were characteristic for the invader species of the Sura River. Larger K. bostoniensis specimens live in deep mesotrophic water bodies with high transparency, compared with representatives of this species in shallow eutrophic water bodies with less transparency in the Middle Volga basin. Our data on the morphological characteristics of the invading species of water bodies in the Middle Volga basin significantly expand the existing information on the morphological variability of K. bostoniensis individuals and their dependence on environmental factors.
Highlights
The water bodies, which are the habitats of K. bostoniensis, are located on several territories that differ significantly in a set of characteristics, such as their geological structure, relief, climate, anthropogenic impact, hydrochemical and hydrophysical indicators, etc
K. bostoniensis individuals in the studied water bodies and watercourses are characterized by large sizes, the median values of the total body length being 236–440 μm
Among the previously studied water bodies of Russia and other countries (Belarus, Sweden, Finland, Brazil, and Argentina), where researches of the morphological variability of K. bostoniensis were carried out, the largest body sizes were characteristic for the invader species of the Sura River
Summary
Проведен анализ морфометрических характеристик коловраток K. bostoniensis 29 разнотипных водных объектов бассейна Средней Волги. В работе использованы пробы зоопланктона, собранные на акваториях: Чебоксарского водохранилища и его притоков первого – третьего порядка (рек Сура, Ветлуга, Ватома, Сережа, Вьюница); 15 озёрах особо охраняемых природных территорий Нижегородской области (Кочешковское, Жаренское, Гришино, Черный Яр, Драничное, Чернозерское-1, Чернозерское-2, Черное, Нижнее Рустайское, Великое, Свято, Паровое, Долгое, Глубокое, Чарское) и Протоке – водоёме, соединяющем озёра Великое и Свято; водоёмов и водотоков антропогенно нарушенных территорий г. Озёра Парковое и Сортировочное); притоков Куйбышевского водохранилища (реках Казанка и Кама) Характеристика исследованных водоёмов и водотоков Table 1. Characteristics of the investigated water bodies and watercourses
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
