Gmelinoides Fasciatus Research Articles

Physiological and Reproductive Disorders of Baltic Amphipods Gmelinoides fasciatus Exposed to 4-tert-Octylphenol

Physiological and Reproductive Disorders of Baltic Amphipods Gmelinoides fasciatus Exposed to 4-tert-Octylphenol

Baikal amphipod (Gmelinoides fasciatus) and is contribution to the feeding of Ladoga Lake perch

The feeding of perch (Perca fluviatilis) from the littoral zone of Ladoga Lake was studied. Attention was focused on the colonizer species, a Baikal amphipod (Gmelinoides fasciatus), and its contribution to feeding. The invasion of Ladoga Lake by the Baikal amphipod has provided a new food item accessible to the fish. The results of the study have shown that the habitat of perch is largely the same as that of the Baikal amphipod. The food of perch was found to consist of various bottom fauna representatives. The colonizer Baikal amphipod made up over 40% of the food bolus by weight, indicating its great contribution to perch’s feeding.

Role of the invasive amphipod Gmelinoides fasciatus (Crustacea: Amphipoda) of littoral macrozoobenthos of the Zaonezhye area of Lake Onego

The results of research of bottom biocenoses of the Zaonezhye area (Zaonezhsky Peninsula in the northeastern part) of Lake Onego in 2023 are presented. Insignificant differences in the spatial distribution of quantitative characteristics of macrozoobenthos were revealed. Quantitative indicators such as abundance and biomass of macrozoobenthos ranged from 1.56-4,01 thousand ind/m² and 0.35-3.19 g/m², respectively. It is shown that the invasive species Gmelinoides fasciatus (Stebbing 1899) (Crustacea: Amphipoda) has naturalized in the littoral. Amphipoda <i>G. fasciatus</i> plays a dominant role in the abundance of the bottom community in Keften-Guba and in the vicinity of Padmozero village. It was noted that the native species Gammarus lacustris Sars 1863 was not recorded anywhere. Quite rapid dispersal of the Baikal species G. fasciatus on the littoral of the reservoir suggests that in the coming years these amphipods may colonize the Lizhemskaya Guba (Bay) of the lake, where there are habitats not subject to its invasion, according to the literature.

Features of diel migrations of Gmelinoides fasciatus (Stebbing, 1899) amphipods in the littoral zone of the Lake Ladoga skerries region

Features of diel migrations of Gmelinoides fasciatus (Stebbing, 1899) amphipods in the littoral zone of the Lake Ladoga skerries region

ANALYSIS OF THE AMPHIPOD FAUNA OF CONTINENTAL RESERVOIRS IN THE NORTHWEST OF RUSSIA’S EUROPEAN PART

The faunal composition of Amphipoda crustaceans of mainland water bodies in northwestern Russia is analyzed. To compile a checklist of amphipod species, data from original collections made in 1998–2021, the collections of the Zoological Institute, and literary information are used. To date, 29 species of amphipods have been recorded from the continental waters of the region. An arealogical analysis of the faunal composition reveals six groups or distribution patterns: Holarctic, West Palearctic, and North Atlantic estuaries, and further three groups of emigrants (settlers) from the Baikal-Siberian, Ponto-Caspian, and Arctic regions. The greatest species richness is recorded in estuarine sections of Baltic Sea rivers in the territories of the Leningrad and Kaliningrad regions, as well as fresh water bodies of the Republic of Karelia. In terms of species richness, estuarine species amphi-Atlantic in distribution and representatives of allochthonous faunas (invasive species) from the Ponto-Caspian basin dominate the region. The most common in the region are representatives of Holarctic and Palearctic patterns, as well as species of Arctic and Baikal-Siberian origins. Among them, the following species are most often to be recorded in lakes: Gammarus lacustris, Monoporeia affinis, Palaseopsis quadrispinosa and Gmelinoides fasciatus, vs G. zaddachi, G. oceanicus, G. tigrinus and Pontogammarus robustoides in estuarine brackish waters. Human-mediated introductions, both intentional and accidental, must have facilitated the appearance of invasive species in the fauna of Russia’s northwestern region. In the future, an increase in species richness in the region can be expected to occur in two ways: through the introduction of marine species into fresh waters and due to speciation.

First Finding of the Invasive Amphipod Gmelinoides fasciatus in the Basin of Lake Vodlozero (Russia)

First Finding of the Invasive Amphipod Gmelinoides fasciatus in the Basin of Lake Vodlozero (Russia)

Dependence of fecundity on body length of the invasive species Gmelinoides fasciatus (Crustacea; Amphipoda) in Lake Onega

For the first time in Lake Onega, the reproduction features of the alien amphipod Gmelinoides fasciatus (Stebbing, 1899) were studied based on research in 2010–2011. The period of reproduction in the conditions of the reservoir (May–September) were established, the body length ranges of egg-bearing females, the average and maximum sizes of breeding individuals, as well as fertility were determined. During the study period, a decrease in the average size of females from May–June to August–September was noted, which is associated with the beginning of reproduction of females of the summer generation and the continued reproduction of females of the last year's generation. Equations were calculated that make it possible to predict the fecundity of females by body length, which indicates similar patterns of generative growth of G. fasciatus on the littoral in the northern bays of Lake Onega. Generally, the fecundity of the amphipod is higher in Lake Onega compared to the fecundity of the same species in Lake Ladoga, Neva Bay, Lake Arakhley and the Bratsk Reservoir. This phenomenon is probably associated with the geographical location of Lake Onega, a higher latitude and a longer photoperiod.

Comparison of Olfactory Sensilla Structure in Littoral and Deep-Water Amphipods from the Baikal Region

The structure of olfactory sensilla was compared in amphipods from the Baikal region, namely in nine Baikal species (Ommatogammarus carneolus melanophthalmus Bazikalova, 1945, O. flavus (Dybowsky, 1874), O. albinus (Dybowsky, 1874), Eulimnogammarus verrucosus (Gerstfeldt, 1858), E. vittatus (Dybowsky, 1874), E. cyaneus (Dybowsky, 1874), Acanthogammarus godlewskii (Dybowsky, 1874), Pallasea cancelloides (Gerstfeldt, 1858) and Gmelinoides fasciatus (Stebbing, 1899)) and a Holarctic species Gammarus lacustris Sars, 1863. The results of the study demonstrate the comparison of aesthetasc lengths and numbers, as well as SEM images of the aesthetascs for Baikal amphipods for the first time. Our results confirm and complement the previously obtained data on the number of aesthetascs per segment for three deep-water Baikal amphipod species of the genus Ommatogammarus. Within the studied deep-water amphipods with different habitat depth ranges, Ommatogammarus albinus (Dybowsky, 1874), inhabiting maximum habitat depth, had the highest number of aesthetascs. The size and number of aesthetascs did not differ in males and females of the littoral Eulimnogammarus verrucosus (Gerstfeldt, 1858) and deep-water species. The littoral amphipods were shown to have equipped with more mechanoreceptors antennae I than deep-water amphipods.

First Find of the Invasive Amphipod <i>Gmelinoides fasciatus</i> in the Basin of Lake Vodlozero (Russia)

For the first time, the presence of the invasive amphipod Gmelinoides fasciatus (Stebbing, 1899) was established in the watercourse of the basin of Lake Vodlozero (Novguda River, a tributary of the Ileksa River), which is located on the territory of the National Park “Vodlozersky” (North-West Russia). The new habitat is at a considerable distance from the previously known ones. The shortest route through water bodies (Ileksa River–Vodlozero Lake–Sukhaya Vodla River–Vodla River–Onega Lake) is about 180 km. This raises questions about the path and mode of spread of the invasive species. Along with migration through water bodies, it is proposed to consider the version of introduction of amphipods by tourists, in particular fishermen, with equipment or bait. A detailed survey of the littoral zone of Lake Vodlozero is recommended to determine the extent of the invasive settlement.

Bioindication of Bottom Sediments of the Gulf of Finland by the Composition of Meiobenthos in Combination with Biotesting and Chemical Analysis

The question of the possibility of using meiobenthos to monitor the state of bottom sediments (BS) in the Baltic Sea, where bottom macrofauna are unstable due to hypoxia, is of interest. The parameters of meiobenthos and the physicochemical characteristics of BS and bottom water were studied, and the toxicity of BS was determined by the survival of the amphipod Gmelinoides fasciatus in 10-day tests for 11 stations in the brackish part of the Gulf of Finland (depths of 10–52 m). Principal component analysis revealed two factors explaining 67% of the variability of the variables, and groups of stations similar in terms of conditions. Factor 1 combined nine related variables (depth, metal concentrations and fraction of sand in BS, ratio of nematodes and copepods (N/C index) and survival of amphipods), and factor 2 combined four variables (organic matter and polyaromatic hydrocarbons in BS, phosphates in water and the number of meiobenthos). Thus, bioindication of the environment by meiobenthos is promising, but requires an integrated approach to be applied in monitoring.

Influence of Temperature on the Life Cycle of Invasive Species <i>Gmelinoides fasciatus</i> (Crustacea: Amphipoda) in Lake Onego

The invasive species Gmelinoides fasciatus (Stebbing 1899) (Crustacea: Amphipoda) is able to successfully form stable populations in the recipient reservoir Lake Onego. In conditions of latitudes 62° N (Petrozavodsk Bay)—63° N (Kumsa area of the Povenets Bay) of Lake Onego, the temperature factor does not limit the development of the amphipod population. Successful naturalization of G. fasciatus under new conditions on the northern border of the range of the European part of Russia (Petrozavodsk Bay and Povenets Bay of Lake Onego) is explained by a sufficient number of degree-days (2269–2626 for the period end of May–beginning of October), which determine the one-year life cycle with generations previous year and current year.

Distribution of the Mass Species of Benthic Crustacean on Nearshore Slope the Ladoga Lake

The species list and distribution of crustacean of a nearshore zone of the Valaam Island (Ladoga Lake) have been investigated by sampler-syringe, dredge and video records. On the depth 1–25 m the five species of crustacean: Asellus aquaticus (Linnaeus, 1758), Monoporeia affinis (Lindström, 1855), Pallaseopsis quadrispinosa (G.O. Sars, 1867), Gmelinoides fasciatus (Stebbing, 1899), Mysis relicta Lovén, 1862 were described. For the first time the vertical distribution of naturalized Baikal amphipods G. fasciatus were inventoried and their features of joint residence with local species were characterized. The distribution of the alien species reliably connected with wave intensity, types of grounds and depth range. The most numerous local species P. quadrispinosa distribution affects by depth range. The types of grounds do not influence on the quantity of all indigenous crustacean in the nearshore zone. In all condition the local species successfully compete with G. fasciatus. All these species inhabit of littoral have higher resistance for wave action as compared with non-indigenous species. It guarantees existence of refuges which can safe diversity of the indigenous species. The obtained data on the spatial distribution of crustaceans make possible to characterize the benthic communities of the little-studied parts of the littoral and sublittoral and, as a result, the food base of bentophagous fishes.

Behavioural responses of invasive (Gmelinoides fasciatus) and native (Gammarus lacustris) amphipods to predators on different bottom substrates

Behavioural responses of invasive (Gmelinoides fasciatus) and native (Gammarus lacustris) amphipods to predators on different bottom substrates

Effects of environmentally relevant concentrations of microplastics on amphipods

Lack of microplastics (MP) toxicity studies involving environmentally relevant concentrations and exposure times is concerning. Here we analyzed the potential adverse effects of low density polyethylene (LDPE) MP at environmentally relevant concentration in sub-chronic exposure to two amphipods Gmelinoides fasciatus and Gammarus lacustris, species that naturally compete with each other for their habitats. 14-day exposure to 2 μg/L (8 particles/L corresponding to low exposure) and 2 mg/L (∼8400 particles/L, corresponding to high exposure) of 53–100 μm LDPE MP were used to assess ingestion and egestion of MP, evaluate its effects on amphipod mortality, swimming ability and oxidative stress level. Both amphipod species were effectively ingesting and egesting LDPE MP. On the average, 0.8 and 2.5 MP particles were identified in the intestines of each amphipod exposed to 2 μg/L and 2 mg/L LDPE MP, respectively. Therefore, intestinal MP after 14-day exposure did not fully reflect the differences in LDPE MP exposure concentrations. Increased mortality of both amphipods was observed at 2 mg/L LDPE MP and in case of G. lacustris also at 2 μg/L exposure. The effect of LDPE on swimming activity was observed only in case of G. fasciatus. Oxidative stress marker enzymes SOD, GPx and reduced glutathione GSH varied according to amphipod species and LDPE MP concentration. In general G. lacustris was more sensitive towards LDPE MP induced oxidative stress. Overall, the results suggested that in MP polluted environments, G. lacustris may lose its already naturally low competitiveness and become overcompeted by other more resistant species. The fact that in the sub-chronic foodborne exposure to environmentally relevant and higher LDPE MP concentrations all the observed toxicological endpoints were affected refers to the potential of MP to affect and disrupt aquatic communities in the longer perspective.

Effects of Diclofenac on the Reproductive Health, Respiratory Rate, Cardiac Activity, and Heat Tolerance of Aquatic Animals.

Diclofenac is an important pharmaceutical present in the water cycle of wastewater treatment and one of the most distributed drugs in aquatic ecosystems. Despite the great interest in the fate of diclofenac in freshwaters, the effects of environmentally relevant concentrations on invertebrates are still unclear. Two species of freshwater invertebrates, the amphipod Gmelinoides fasciatus and the bivalve mollusk Unio pictorum, were exposed to diclofenac concentrations of 0.001-2 μg/L (environmentally relevant levels) for 96 h. A set of biological endpoints (survival, fecundity, embryo abnormalities, respiration and heart rates, heat tolerance, and cardiac stress tolerance) were estimated in exposed invertebrates. Effects of diclofenac on amphipod metabolic rate and reproduction (number and state of embryos) and adaptive capacity (cardiac stress tolerance) in both species were evident. The oxygen consumption of amphipods exposed to diclofenac of 0.1-2 μg/L was 1.5-2 times higher than in the control, indicating increased energy requirements for standard metabolism in the presence of diclofenac (>0.1 μg/L). The heart rate recovery time in mollusks after heating to critical temperature (30 °C) was 1.7 and 9 times greater in mollusks exposed to 0.1 and 0.9 μg/L, respectively, than in the control (24 min). A level of diclofenac >0.9 μg/L adversely affected amphipod embryos, leading to an increase in the number of embryos with impaired development, which subsequently died. Thus, the lowest effective concentration of diclofenac (0.1 μg/L) led to increased energy demands of animals while reducing cardiac stress tolerance, and at a level close to 1 μg/L reproductive disorders (elevated mortality of the embryos) occurred. Environ Toxicol Chem 2022;41:677-686. © 2021 SETAC.

Biodiversity of the Ingoda River ecosystem

The results of a study of the biodiversity of hydrobionts in the Ingoda River are presented. In phytoplankton sixty six taxa of algae with a rank below the genus have been identified. The zooplankton contains 21 species. The species composition of the macrophytobenthos includes 5 taxa. In the flora of hydrophytes, 15 plant species have been identified. The zoobenthos contains 40 species. Our researches have been showed that widespread species prevail in the flora and fauna of hydrobionts in the Ingoda River. Two alien species (Elodea canadensis and Gmelinoides fasciatus) have been recorded in the Kenon Lake. A very rare East Siberian species of mayfly Acanthametropus nikolskyi has been recorded in the Ingoda River zoobenthos.

Assessment of Microplastic Size Range and Ingestion Intensity by Gmelinoides fasciatus Stebbing, an Invasive Species of Lake Onego.

To indicate the potential role of Gmelinoides fasciatus, an invasive species of Lake Onego, in the inclusion of microplastics into food webs, several indicators were evaluated: its ability to ingest microplastics, the preferred size ranges, and the ingestion intensity. For this purpose, irregularly shaped polystyrene copolymer particles (acrylonitrile butadiene styrene plastics, artificially crushed) of four size classes (<50, 50-100, 100-250, >250 µm) were used. Gmelinoides fasciatus actively ingested microplastic particles, and in treatment with particles of 100-250 µm in size, the consumption rate was the highest. The crustaceans that survived the experiment ingested smaller particles than the deceased ones. Based on the size-frequency distributions of the ingested particles and the same in the suspension, crustaceans preferred smaller particles than those in suspension. The mean size of the ingested particles was 100 ± 5 µm. However, considering the actual concentration of microplastic fragments in the sediments of Lake Onego, in natural conditions, a negative effect of microplastic fragments on the G. fasciatus population is unlikely. At the same time, the ability of the invasive species G. fasciatus to consume microplastics and their active integration into the food webs of Lake Onego through consumption by fish can be considered reliable factors of the entry of microplastics in the fish of Lake Onego. Environ Toxicol Chem 2022;41:184-192. © 2021 SETAC.

The Baikal Amphipod Gmelinoides fasciatus (Amphipoda, Crustacea) in the Diet of Perch in the Littoral Zone of Lake Onega (Age and Seasonal Characteristics)

The Baikal Amphipod Gmelinoides fasciatus (Amphipoda, Crustacea) in the Diet of Perch in the Littoral Zone of Lake Onega (Age and Seasonal Characteristics)

Finding of the Invasive Amphipod Gmelinoides fasciatus (Stebbing, 1899) in Watercourses of the Lake Onega Basin

Finding of the Invasive Amphipod Gmelinoides fasciatus (Stebbing, 1899) in Watercourses of the Lake Onega Basin

THE FINDING OF THE INVASIVE AMPHIPOD &lt;i&gt;GMELINOIDES FASCIATUS&lt;/i&gt; (STEBBING, 1899) IN WATERCOURSES OF THE ONEGA LAKE BASIN

The invasive amphipod Gmelinoides fasciatus (Stebbing, 1899) was not previously recorded in the rivers of the Onega Lake basin, although it has spread widely in its littoral in recent years. In 2019 and 2020, this species was found to inhabit the estuarine zones of watercourses (the Rybreka River and the Drugaya River) at a considerable distance from the lacustrine littoral zone (0.5 and 1.7 km, respectively). It was revealed that G. fasciatus is included in the communities of both pools and riffles, and in some areas reaches dominant positions in the macrozoobenthos, which indicates the possibility of further expansion of its range due to the river ecosystems of the region.