Zooplankton Structure and Structure of Nocturnal Migratory Complex of Benthic Amphipods in Bol’shoi (Large) Ushkany Island Area (Lake Baikal) at Night Time (June-July)

Тахтеев, В. В.; Arov, I. V.; Misharina, E. A.; Govorukhina, E. B.; Eropova, I. O.; Batranin, D. A.

doi:10.26516/2073-3372.2018.23.54

Cited by 4 publications

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“…This taxonomy become a result of successive revision of previous ones [13, 20–22, 24, 26, 27]. Since new families were introduced in the course of recent revisions of Baikalian amphipods, some species and genera were renamed and thus the species list differs from the one given in the previous publications [28, 30, 35, 36].…”

Section: Resultsmentioning

confidence: 99%

“…[12, 16–19]). The work on the revision of their higher level taxonomy is still in progress [13, 14, 17, 19–27]. According to the most modern revision by Kamaltynov [17] all Baikalian amphipod species belong to 76 genera and eleven families, ten of which are autochthonous: Carinogammaridae Tachteev, 2000, Crypturopodidae Kamaltynov, 2001, Macrohectopodidae Sowinsky, 1915, Micruropodidae Kamaltynov, 1999, Baikalogammaridae Kamaltynov, 2001, Ommatogammaridae Kamaltynov, 2009, Acanthogammaridae Garjajeff, 1901, Eulimnogammaridae Kamaltynov, 1999, Pachyschesidae Kamaltynov, 1999, Pallaseidae Tachteev, 2001.…”

Section: Introductionmentioning

confidence: 99%

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Evolution of mitochondrial genomes in Baikalian amphipods

et al. 2016

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BackgroundAmphipods (Crustacea) of Lake Baikal are a very numerous and diverse group of invertebrates generally believed to have originated by adaptive radiation. The evolutionary history and phylogenetic relationships in Baikalian amphipods still remain poorly understood. Sequencing of mitochondrial genomes is a relatively feasible way for obtaining a set of gene sequences suitable for robust phylogenetic inferences. The architecture of mitochondrial genomes also may provide additional information on the mechanisms of evolution of amphipods in Lake Baikal.ResultsThree complete and four nearly complete mitochondrial genomes of Baikalian amphipods were obtained by high-throughput sequencing using the Illumina platform. A phylogenetic inference based on the nucleotide sequences of all mitochondrial protein coding genes revealed the Baikalian species to be a monophyletic group relative to the nearest non-Baikalian species with a completely sequenced mitochondrial genome - Gammarus duebeni. The phylogeny of Baikalian amphipods also suggests that the shallow-water species Eulimnogammarus has likely evolved from a deep-water ancestor, however many other species have to be added to the analysis to test this hypothesis.The gene order in all mitochondrial genomes of studied Baikalian amphipods differs from the pancrustacean ground pattern. Mitochondrial genomes of four species possess 23 tRNA genes, and in three genomes the extra tRNA gene copies have likely undergone remolding. Widely varying lengths of putative control regions and other intergenic spacers are typical for the mitochondrial genomes of Baikalian amphipods.ConclusionsThe mitochondrial genomes of Baikalian amphipods display varying organization suggesting an intense rearrangement process during their evolution. Comparison of complete mitochondrial genomes is a potent approach for studying the amphipod evolution in Lake Baikal.Electronic supplementary materialThe online version of this article (doi:10.1186/s12864-016-3357-z) contains supplementary material, which is available to authorized users.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Evolution of mitochondrial genomes in Baikalian amphipods

et al. 2016

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“…The experimental species were Eulimnogammarus cyaneus (Dyb., 1874), Eulimnogammarus verrucosus (Gerstf., 1858) and Eulimnogammarus vittatus (Dyb., 1874), endemic to Lake Baikal, and Gammarus lacustris (Sars, 1863) common in surface waters across the Holarctic. Eulimnogammarus cyaneus is most abundant along the shallow shoreline (mainly up to 1 m water depth), few individuals occur at water depths up to 20 m [28] at temperatures between 5-13°C [22]. Habitats of E. vittatus are at water depths of up to 30 m, the abundance peak is at 2–3 m depth [29]; the water temperatures in the habitat range between 9-13°C [22].…”

Section: Methodsmentioning

confidence: 99%

“…Eulimnogammarus cyaneus is most abundant along the shallow shoreline (mainly up to 1 m water depth), few individuals occur at water depths up to 20 m [28] at temperatures between 5-13°C [22]. Habitats of E. vittatus are at water depths of up to 30 m, the abundance peak is at 2–3 m depth [29]; the water temperatures in the habitat range between 9-13°C [22]. Eulimnogammarus verrucosus commonly occurs close to shore across Lake Baikal at water depths of less than 1 m to up to 10–15 m [29] at temperatures of 5-13°C [22].…”

Section: Methodsmentioning

confidence: 99%

“…Baikal’s water is generally highly pristine, however, the risk of water contamination by heavy metals is increasing especially through the Selenga river, which is the largest tributary of Lake Baikal and comprises almost half of the riverine inflow into the lake [19, 20]. Amphipods are a dominant taxon of the benthic communities of Lake Baikal and the more than 350 endemic species and subspecies represent 45.3% of all freshwater amphipod species of the world [21, 22]. The numerous phylogenetically closely related species featuring a range of adaptation strategies are interesting models for comparative studies [23].…”

Section: Introductionmentioning

confidence: 99%

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Investigation of cellular stress response related heat shock proteinhsp70/Hsp70 and multixenobiotic transporterabcb1in Siberian freshwater amphipods upon cadmium exposure

Протопопова

Павличенко

Luckenbach

2019

Preprint

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Stress gene responses in amphipods to cadmium 1 1 Title: Investigation of cellular stress response related heat shock protein hsp70/Hsp70 and 2 multixenobiotic transporter abcb1 in Siberian freshwater amphipods upon cadmium exposure 3 4 Authors: 13 14 15 16 17 18 19 20Stress gene responses in amphipods to cadmium 2 21 Abstract: Induction of stress response genes hsp70 and abcb1 and Hsp70 protein by 22 cadmium chloride (CdCl 2 ) was explored in amphipod species with different stress adaptation 23 strategies from the Lake Baikal area. Based on lethal concentrations (LC) the sensitivities to 24 CdCl 2 were ranked (24 hr LC50 -mg/L CdCl 2 ): Gammarus lacustris (1.7) < 25 Eulimnogammarus cyaneus (2.9) < E. verrucosus (8.3) < E. vittatus (18.2). Conjugated dienes 26 indicating lipid peroxidation were significantly increased by 5 mg/L CdCl 2 (24 hr exposure) 27 only in G. lacustris and E. cyaneus. Upon treatment with 0.54 -5.8 mg/L CdCl 2 hsp70 28 transcript levels were more increased in the toxicologically more sensitive species. Relating 29 the exposure concentrations to LCx values revealed that across the species the increases of 30 hsp70 transcript levels were comparatively low (up to 2.6-fold) up to LC50; at higher LCx 31 values hsp70 induction was more pronounced (up to a 9.1-fold by 5 mg/L CdCl 2 (≙LC70) in 32 E. cyaneus). In contrast, abcb1 inductions did not correspond with CdCl 2 LCx values across 33 species; abcb1 induction was highest (4.7-fold) in E. verrucosus by 5.0 mg/L CdCl 2 (≙LC45, 34 24 hr exposure). Induction of stress gene responses by lethal CdCl 2 concentrations indicates 35 that in the amphipods they are rather insensitive. 36 37 38 39 Key words: conjugated dienes, heavy metal, Lake Baikal, P-glycoprotein, stress protein 40 41 Stress gene responses in amphipods to cadmium 3 42 Introduction 43Cadmium is a non-essential heavy-metal that reaches the environment via various 44 anthropogenic and natural sources and at low concentrations causes poisoning in humans and 45 wildlife [1]. Toxic cadmium effects have often been attributed with increased levels of 46 reactive oxygen species (ROS) and reactive nitrogen species (RNS) causing damages of 47 biological macromolecules such as proteins [2]. Exposure to cadmium was found to lead to 48 the induction of cellular stress response genes hsp70 [3][4][5][6][7][8][9][10][11][12] and abcb1 [13, 14] in a range of 49 aquatic organisms. This induction of hsp70 and abcb1 by cadmium can be related to the 50 increased abundance of damaged cellular macromolecules such as cellular membrane 51 fragments or misfolded proteins [15, 16]. 52Lake Baikal in Eastern Siberia, the oldest, deepest and by volume largest lake in the 53 world, is a biodiversity hotspot with high degrees of endemicity of species [17, 18]. Baikal´s 54 water is generally highly pristine, however, the risk of water contamination by heavy metals 55 is increasing especially through the Selenga river, which is the largest tributary of Lake 56 Baikal and comprises almost half of the riverine inflow into...

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Human impact and ecosystemic health at Lake Baikal

Brown

Gerber²,

Bedulina

et al. 2021

WIREs Water

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Lake Baikal in eastern Siberia is the deepest and (by volume) largest lake on Earth. Among the most ancient lakes, it is home to thousands of endemic species. Lake Baikal is well‐known for its water purity, especially its dominant deep‐water layers, which consist of pristine, drinking‐quality water and is inhabited by unique endemics with enormous biodiversity. But some coastal sites of this giant lake (mainly localized in isolated shallow bays and littoral zones close to settlements and industrial sites) are suffering from an environmental crisis that threatens the water's quality and the ecosystem it supports. As part of the global ecosystem, Lake Baikal is already facing significant impacts from global climate change, which, in turn, increase the risks and consequences of local anthropogenic effects. Although the lake is protected by federal law, human activities are nevertheless having a growing negative impact on its ecosystem. Political, economic, and social factors result in cascading natural consequences in water quality, coastal sustainability, pollution sinks, water level management, forest maintenance, fire control and biodiversity. While Lake Baikal is a UNESCO World Heritage Site, known and valued around the world, it remains vulnerable to worsening threats that must be addressed if humanity is to preserve this unique ecosystem and its endemic species into the future. This article is categorized under: Water and Life > Stresses and Pressures on Ecosystems Water and Life > Conservation, Management, and Awareness Science of Water > Water Quality Engineering Water > Planning Water

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Zooplankton Structure and Structure of Nocturnal Migratory Complex of Benthic Amphipods in Bol’shoi (Large) Ushkany Island Area (Lake Baikal) at Night Time (June-July)

Cited by 4 publications

References 0 publications

Evolution of mitochondrial genomes in Baikalian amphipods

Evolution of mitochondrial genomes in Baikalian amphipods

Investigation of cellular stress response related heat shock proteinhsp70/Hsp70 and multixenobiotic transporterabcb1in Siberian freshwater amphipods upon cadmium exposure

Human impact and ecosystemic health at Lake Baikal

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