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The first mitochondrial genome of Codonobdella sp. (Hirudinea, piscicolidae), an endemic leech species from Lake Baikal, Russia and reassembly of the Piscicola geometra data from SRA.

ABSTRACT: In this study, we assembled a complete mitochondrial genome of Codonobdella sp. sample from Lake Baikal, Russia and reassembled third party raw data of Piscicola geometra. Mitogenomes of both freshwater piscine leeches consist of 37 genes, including 13 protein-coding genes (PCGs), two ribosomal genes (12S and 16S), 22 transport RNA genes, and one control region. The complete mitogenome of Codonobdella sp. is 14,486 bp long and A + T biased (75.51%). The complete mitogenome of Piscicola geometra is 14,788 bp long and A + T biased (78.27%).

SUBMITTER: Bolbat A

PROVIDER: S-EPMC8510600 | biostudies-literature |

REPOSITORIES: biostudies-literature

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Annotated checklist of the leech species diversity in the Maloe More Strait of Lake Baikal, Russia.

Project description:In this paper, the very first checklist of the freshwater leeches of Maloe More Strait, a special part of Lake Baikal, is presented. It includes 14 free-living and parasitic species, of which four species belong to endemic Baikal genera - two species from Baicalobdella and one species each from Baicaloclepsis and Codonobdella. The checklist highlights six potentially new morphological species recorded for the first time in the area. The exact systematic position is stated for all leech species. Each species from the list is provided with information on taxonomic synonymy, data on its geographic distribution, and ecological characteristics. New species records are additionally provided with brief morphological characteristics and photos of their external morphology.

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Project description:Green algae of the phylum Chlorophyta are the most widespread autotrophic picoplankton in Lake Baika (Russia). To expand our molecular biological knowledge of these microalgae and compare them in the future with an endosymbiotic strain, we present here the draft genome sequence of Chlorella sp. strain BAC9706.

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Draft Genome Sequence of Thermaerobacter sp. Strain PB12/4term, a Thermophilic Facultative Anaerobic Bacterium from Bottom Sediments of Lake Baikal, Russia.

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Transcriptome sequencing of two Lake Baikal endemic (Eulimnogammarus verrucosus and E. cyaneus) and one Holarctic (Gammarus lacustris) transcriptome species from the Baikal region subjected to different stressors

Project description:This SuperSeries is composed of the SubSeries listed below.

2019-05-23 | GSE129070 | GEO

Placobdelloides sirikanchanae sp. nov., a new species of glossiphoniid leech and a parasite of turtles from lower southern Thailand (Hirudinea, Rhynchobdellida).

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2020-06-04 | PXD018516 | Pride

Comparison between transcriptomic responses to short-term stress exposures of a common Holarctic and endemic Lake Baikal amphipods.

Project description:BACKGROUND:Lake Baikal is one of the oldest freshwater lakes and has constituted a stable environment for millions of years, in stark contrast to small, transient bodies of water in its immediate vicinity. A highly diverse endemic endemic amphipod fauna is found in one, but not the other habitat. We ask here whether differences in stress response can explain the immiscibility barrier between Lake Baikal and non-Baikal faunas. To this end, we conducted exposure experiments to increased temperature and the toxic heavy metal cadmium as stressors. RESULTS:Here we obtained high-quality de novo transcriptome assemblies, covering mutiple conditions, of three amphipod species, and compared their transcriptomic stress responses. Two of these species, Eulimnogammarus verrucosus and E. cyaneus, are endemic to Lake Baikal, while the Holarctic Gammarus lacustris is a potential invader. CONCLUSIONS:Both Baikal species possess intact stress response systems and respond to elevated temperature with relatively similar changes in their expression profiles. G. lacustris reacts less strongly to the same stressors, possibly because its transcriptome is already perturbed by acclimation conditions.

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