Morphological features of the Amur sleeper (Perccottus glenii, Perciformes, Eleotridae) introduced into water bodies of European Russia

Abstract

Data on eight morphological features of 29 Amur sleeper populations in water bodies of the acquired range of European Russia (50.0°-62.2°N) are presented and compared with 4 populations of the native range (43. 5-48.2°N). It has been found that the formation of a certain number of vertebrae in the abdominal, transitional, and caudal segments of the axial skeleton in population groups recognized in the study is related to similar temperature conditions in the water bodies.

Morphometric and meristic characteristics of the Amur sleeper (Perccottus glenii) from the Danube River drainage channel

“…The length values from this study differed from those of the Amur sleeper in its native range: 72.0-106.0 mm [25] and 33.0-116.0 mm [26]; in addition, they differed from the length values recorded in Poland, 77.7-106.5 mm [27], Belarus, 82.2-131.0 mm [28], and Germany, 22.0-110.0 mm [29], but were within the range of populations from Russia, 48.0-155.0 mm [30] and 46.0-189.0 mm [31].…”

“…Comparison of several meristic features of Amur sleeper in different types of waterbodies in the native and non-native (European Russia) ranges of P. glenii showed that the higher number of lake populations significantly differed in comparison to the native population from the Amur River. Considering the number of rays, the D1 fin and D2 fin values increased, while the anal fin (A) values decreased [31]. The means of the D1 rays in both native and non-native ranges were close in all waterbody types.…”

Alien Species of Fish in the Littoral of Volga and Kama Reservoirs (Results of Complex Expeditions of IBIW RAS in 2005-2017)

“…Almost absent in large waterbodies. In extremely rare cases, this species is observed in shallow, overgrown areas of Volga River reservoirs [Kasyanov, Goroshkova, 2012]. There are data [Shakirova et al, 2015] on the existence of a large number of Amur sleepers populations in the Staromaynsky Bay of the Kuibyshev Reservoir.…”