Anastasia Yurtseva

Zoological Institute of Russian Academy of Sciences · Laboratory of Ichthyology

In order to assess the accuracy and reliability of age estimates from calcified structures in the three‐spined stickleback Gasterosteus aculeatus, we evaluated intra and inter‐reader repeatability from three structures: otoliths, gill covers and pelvic spines. Average age estimates were also compared between the structures. The overall intra‐reader...

The threespine stickleback Gasterosteus aculeatus and the common jellyfish Aurelia aurita are keystone species in many marine ecosystems, including the shallow cove Kertinge Nor, in Denmark. Both species feed on zooplankton, raising the potential for competition between them. While jellyfish are tactile filtering planktivores, sticklebacks are visu...

HELCOM facts sheet (also available here http://www.helcom.fi/baltic-sea-trends/environment-fact-sheets/biodiversity/abundance-and-distribution-of-round-goby/) on the abundance, distribution and impacts of the invasive round goby (Neogobius melanostomus) in the Baltic region.

The Velikaya River is the principal river flowing into the southern part of Lake Peipus, which is situated in the basin of the Gulf of Finland, an arm of the Baltic Sea. Lake Peipus is one of the largest and most productive freshwater bodies in Europe. An important population center in ancient Russia, the town of Pskov sits on the downstream part o...

Osteological differentiation and developmental stability of Atlantic salmon juveniles were studied in eight rivers of the White, Barents and the Baltic seas basins. Mean values and fluctuating asymmetry (random deviations from perfect bilateral symmetry, measure of developmental instability, FA) were measured on skull bones using shape of the bones...

Studies of speciation and intraspecific differentiation in salmonid fishes are traditionally based on analysis of osteological traits. In the current study the variation of osteological traits was compared between two Atlantic salmon forms: anadromous and landlocked. Each form was represented by three samples: one from a wild population, and two fr...

The round goby is a small demersal fish that is considered one of the top invasive fish species. Having settled far beyond its native Ponto–Caspian region, the round goby currently inhabits the basins of the Baltic and North Seas, as well as the Great Lakes of North America. Since 2005, the species has been increasingly recorded in the eastern part...

Sexual dimorphism (SD) in the threespine stickleback Gasterosteus aculeatus reflects the different roles of the sexes in reproduction and their adaptations to different ecological niches. We quantified SD in one population of marine stickleback from the White Sea, collected during the spawning period from three spawning grounds, each at a distance...

The round goby, Neogobius melanostomus (Pallas, 1814), is a fish of Ponto-Caspian origin that has been invading the Baltic Sea since the 1990s. Currently, it is abundant and commercially important in some areas of the sea. This species was first reported in the eastern Gulf of Finland (GoF) in 2012. Its occurrence increased thereafter, however it h...

Обзор посвящен обобщению и анализу данных по трехиглой колюшке Gasterosteus aculeatus Белого моря, которая в настоящее время является наиболее многочисленной рыбой водоема и играет важную роль в сообществах его прибрежной зоны и открытых вод. Численность колюшки была высокой в 1920– 1940 гг., сильно снизилась в период с конца 1960-х по конец 1990-х...

This review summarizes and analyzes data on the threespine stickleback Gasterosteus aculeatus L. of the White Sea, which is currently the most abundant fish in the region and, therefore, plays an important role in inshore and offshore communities. The threespine stickleback was abundant in the 1920s-1940s; its numbers declined significantly between...

Hypothesis: Fluctuating asymmetry (FA) – random deviations from perfect symmetry that are used as a measure of developmental stability – is an effective indicator of stress and fitness in Threespine stickleback. Organisms: The Threespine stickleback (Gasterosteus aculeatus) and two other species, the brook stickleback (Culaea inconstans) and nines...

Hypothesis: Marine threespine stickleback manifest homing ability and site fidelity during their spawning period. Organism: The threespine stickleback, Gasterosteus aculeatus. Time and places: June 2015 and June 2016 (during the stickleback spawning period), Koliushkovaya Lagoon, Kandalaksha Bay, the White Sea. Methods: Stickleback were tagged on t...

Hypothesis: Fluctuating asymmetry (FA) – random deviations from perfect symmetry that are used as a measure of developmental stability – is an effective indicator of stress and fitness in threespine stickleback. Organisms: The threespine stickleback (Gasterosteus aculeatus) and two other species, the brook stickleback (Culaea inconstans) and ninesp...

Russia supports the sixth largest fisheries worldwide, which grew 25% during the last decade and is forecasted to grow 40% more up to 2020. Such voluminous and fast growing fisheries cause challenges for their sustainability. Marine Stewardship Council (MSC) voluntary certification is now the most recognized system aimed to achieve sustainability o...

Vaccination has recently become a widely considered factor influencing the development of farmed fishes. In the present study, developmental stability of bone structures of vaccinated and nonvaccinated Atlantic salmon is investigated using two parameters, the frequency of deformities and fluctuating asymmetry (FA, nondirectional deviations from per...

The western part of the Bryansk region (Russia) was seriously contaminated with radioactive isotopes by the Chernobyl disaster in 1986. Contamination level of this area is similar to contaminated regions in Ukraine and Belarus. We studied the fluctuating asymmetry of two cyprinid species, roach Rutilus rutilus and bleak Alburnus alburnus, to assess...

To date, morphological studies of the Atlantic salmon have been conducted for about 50 wild North American populations and a similar number of populations from the European part of its distribution range (Yurtseva, 2011). Morphological differences were found between anadromous populations and between anadromous and landlocked populations (Kendall 1...

The aim of this study was to investigate the effects of vaccination, and starvation after vaccination, on the morphology of skull bones and vertebral bodies, bone mineralization and the development of intra-muscular melanin deposits in farmed Atlantic salmon. For this purpose, triplicate groups of vaccinated (V) or unvaccinated (UV) underyearling s...

Since 1992, most juvenile Atlantic salmon Salmo salar from the Keret River (White Sea basin) have been infected with the dangerous parasite G. salaris almost every year. Decreasing the population size, G. salaris affected the salmon gene pool. Wild juveniles from the Keret, in contrast to juveniles from other rivers, were found to have a higher flu...

The study addresses the effect of hatchery rearing on morphological variation and developmental stability of Atlantic salmon parr from North-West Russia. Totally, we collected nine samples. Four wild samples were collected from each of the rivers Kola, Umba, Keret' and Shuia. Five samples of hatchery-reared parr were the first-generation progeny of...

The aim of the present study was to elucidate whether vertebral deformities influence on the growth performance of salmon, and if so, at what level of severity the growth performance/welfare is affected. To do this, Atlantic salmon postsmolts were individually tagged and reared in a common seacage from January 2005 until January 2006. At the end of...