https://repository.kopri.re.kr/handle/201206/13401 Tue, 07 Apr 2026 13:35:14 GMT 2026-04-07T13:35:14Z https://repository.kopri.re.kr/handle/201206/14505 Title: Advancement into unexplored areas of North Greenland through paleoenvironment and animal evolution research Authors: Park, Tae-Yoon S. Wed, 26 Jul 2023 00:00:00 GMT https://repository.kopri.re.kr/handle/201206/14505 2023-07-26T00:00:00Z https://repository.kopri.re.kr/handle/201206/14088 Title: The complete mitochondrial genome of the Arctic fairy shrimp Branchinecta paludosa (Muller, 1788) (Anostraca, Branchinectidae) from Sirius Passet, North Greenland Authors: Kim, Ji-Hoon; Jo, Euna; Park, Tae-Yoon S.; Kim, Bo-Mi Abstract: Here we report the complete mitochondrial genome of the Arctic fairy shrimp, Branchinecta paludosa (Muller, 1788) (Anostraca, Branchinectidae), which was collected in the High Arctic of North Greenland. A complete 16,059 bp mitochondrion of B. paludosa was sequenced and assembled with the Illumina next generation sequencing platform. The B. paludosa mitogenome contains 13 PCGs, 22tRNAs and 2 rRNA genes that are commonly observed in most metazoans, and shows the conserved gene arrangement pattern of Anostraca. Our results of the phylogenomic analysis are consistent with the previous phylogenetic relationship based on nuclear 18S ribosomal DNA. The B. paludosa mitogenome will be useful for understanding the geographical distribution and phylogenetic relationship of anostracans. Sat, 01 Jan 2022 00:00:00 GMT https://repository.kopri.re.kr/handle/201206/14088 2022-01-01T00:00:00Z https://repository.kopri.re.kr/handle/201206/14131 Title: Fecal microbiota and diets of muskox female adults and calves Authors: 천지연; Cho, Hyunjun; Kim, Mincheol; 박현제; Park, Tae-Yoon S.; Lee, Won Young Abstract: In mammals, the gut microbiome is vertically transmitted during maternal lactation at birth. In this study, we investigated the gut microbiome and diets of muskox, a large herbivore inhabiting in the high Arctic. We compared the microbiota composition using bacterial 16S rRNA gene sequencing and diets using stable isotope analysis of muskox feces of six female adults and four calves on Ella Island, East Greenland. Firmicutes were the most abundant bacterial phylum in both the adults and calves, comprising 94.36% and 94.03%, respectively. Significant differences were observed in the relative abundance of the two Firmicutes families. The adults were primarily dominated by Ruminococcaceae (73.90%), and the calves were dominated by both Ruminococcaceae (56.25%) and Lachnospiraceae (24.00%). Stable isotope analysis of the feces in the study area revealed that both adults and calves had similar ranges of 13C and 15N, likely derived from the dominant diet plants. Despite their similar diets, the different gut microbiome compositions in muskox adults and calves indicate that the gut microbiome of the calves may not be fully colonized to the extent of that of the adults. Sat, 01 Jan 2022 00:00:00 GMT https://repository.kopri.re.kr/handle/201206/14131 2022-01-01T00:00:00Z https://repository.kopri.re.kr/handle/201206/13741 Title: Correlations between alignment gaps and nucleotide substitution or amino acid replacement Authors: Seo, Tae-Kun; Benjamin D. Redelings; Jeffrey L. Thorne Abstract: To assess the conventional treatment in evolutionary inference of alignment gaps as missing data, we propose a simple nonparametric test of the null hypothesis that the locations of alignment gaps are independent of the nucleotide substitution or amino acid replacement process. When we apply the test to 1390 protein alignments that are informed by protein tertiary structure and use a 5% significance level, the null hypothesis of independence between amino acid replacement and gap location is rejected for approximately 65% of data sets. Via simulations that include substitution and insertion-deletion, we show that the test performs well with true alignments. When we simulate according to the null hypothesis and then apply the test to optimal alignments that are inferred by each of four widely-used software packages, the null hypothesis is rejected too frequently. Via further simulations and analyses, we show that the overly frequent rejections of the null hypothesis are not solely due to weaknesses of widely-used software for finding optimal alignments. Instead, our evidence suggests that optimal alignments are unrepresentative of true alignments and that biased evolutionary inferences may result from relying upon individual optimal alignments. Sat, 01 Jan 2022 00:00:00 GMT https://repository.kopri.re.kr/handle/201206/13741 2022-01-01T00:00:00Z