Nucleotide sequence diversity in two mtDNA loci (the cytochrome b gene and the control region) was for the first time studied in the Baikal seal Pusa sibirica with the use of several spatiotemporal samples. The population was found to be evolutionarily young and to be in the stage of demographic expansion.
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http://dx.doi.org/10.1134/S0012496623700400 | DOI Listing |
GigaByte
November 2024
Institute for Ecology, Evolution and Diversity, Goethe University, Max-von-Laue-Strasse. 9, Frankfurt am Main, 60438, Germany.
J Hered
November 2024
A.N. Severtsov Institute of Ecology and Evolution, Russian Academy of Sciences, Moscow.
The allelic diversity of exon 2 (DQB gene) and exon 3 (DRB gene) of major histocompatibility complex class II was studied for the first time in two species of the landlocked pinnipeds, Baikal (N = 79) and Caspian (N = 32) seals, and these were in compared with the widespread Arctic species, the ringed seal (N = 13). The analysis of the second exon comprising the antigen-binding region revealed high allelic diversity in all three species but the pattern of the diversity was the most specific for the Baikal seal. This species differs from the other two by the smallest number of alleles in the population, yet they have the largest number of alleles per individual and by the maximum similarity of individual genotypes.
View Article and Find Full Text PDFMol Ecol
October 2024
Department of Ecosystems in the Barents Region, Svanhovd Research Station, Norwegian Institute of Bioeconomy Research, Svanvik, Norway.
Dokl Biol Sci
August 2023
Severtsov Institute of Ecology and Evolution, Russian Academy of Sciences, Moscow, Russia.
Ecotoxicol Environ Saf
October 2023
Center for Marine Environmental Studies, Ehime University, Matsuyama 7908577, Japan. Electronic address:
Baikal seals (Pusa sibirica) are vulnerable to high levels of organic pollutants. Here, we evaluated the transactivation potencies of bisphenols (BPs) and hydroxylated polychlorinated biphenyls (OH-PCBs) via the Baikal seal estrogen receptor α and β (bsERα and bsERβ) using in vitro and in silico approaches. In vitro reporter gene assays showed that most BPs and OH-PCBs exhibited estrogenic activity with bsER sub-type-specific potency.
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