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1.
Animals (Basel) ; 14(6)2024 Mar 19.
Article in English | MEDLINE | ID: mdl-38540041

ABSTRACT

We sequenced and analyzed the complete mitochondrial genome of Lentipes ikeae and explored the phylogenetic relationships among Sicydiinae based on mitochondrial genome sequences. The complete mitochondrial genome sequence of L. ikeae was determined using the Illumina HiSeq X Ten sequencing platform, and the gene structural characteristics and base composition were analyzed. Based on the mitochondrial genome sequences of 28 Sicydiinae species published in GenBank and mitochondrial protein-coding genes (PCGs), Acanthogobius flavimanus (Gobionellinae) was selected as an outgroup to construct phylogenetic trees of Sicydiinae using the maximum likelihood and Bayesian inference methods. The mitochondrial genome of L. ikeae (GenBank number: OP764680) has a total length of 16,498 bp and encodes 13 PCGs, 22 transfer RNA genes, two ribosomal RNA genes, and a D-loop (control) region. Gene rearrangement is not observed. The mitochondrial genome of L. ikeae exhibits an AT preference, with AT skew > 0 and GC skew < 0 across the entire genome. The phylogenetic relationships of Sicydiinae based on 13 mitochondrial PCG sequences are Sicydium + (Stiphodon + (Sicyopus + Lentipes)) + Sicyopterus, indicating that Sicydium, Sicyopterus, Lentipes, and Stiphodon are all monophyletic groups.

2.
Gene ; 818: 146230, 2022 Apr 15.
Article in English | MEDLINE | ID: mdl-35093448

ABSTRACT

Chydoridae are phytophilic-benthic microcrustaceans that make up a significant proportion of species diversity and play an important role in the littoral zone of freshwater ecosystems worldwide. Here, we provide the complete mitochondrial genome of Ovalona pulchella (King, 1853), determined by next-generation sequencing. The entire mitochondrial genome is 15,362 bp in length; this is the first sequenced mitochondrial genome in the family Chydoridae. The base composition and codon usage were typical of Cladocera species. The mitochondrial gene arrangement (37 genes) was not consistent with that of other Branchiopoda. Both maximum likelihood and Bayesian analyses supported each suborder and family of Branchiopoda as monophyletic groups. The relationships among the families were as follows: [(Leptestheriidae + Limnadiidae) + (Sididae + (Bosminidae + (Chydoridae + Daphniidae)))] + Triopsidae. The newly sequenced O. pulchella was most closely related to the family Daphniidae. The complete mitochondrial genome of O. pulchella also provides valuable molecular information for further analysis of the phylogeny of the Chydoridae and the taxonomic status of the Branchiopoda.


Subject(s)
Cladocera/genetics , Gene Rearrangement , Genome, Mitochondrial , Phylogeny , Animals , Base Sequence , China , Chromosome Mapping , Codon, Terminator/genetics , Gene Order , Open Reading Frames/genetics , RNA, Ribosomal/genetics , RNA, Transfer/genetics , Species Specificity
3.
Mitochondrial DNA B Resour ; 6(11): 3100-3102, 2021.
Article in English | MEDLINE | ID: mdl-34621987

ABSTRACT

In this study, we presented the first complete mitochondrial genome of the genus Simocephalus determined by next-generation sequencing. The mitogenome of S. sibiricus is 15,818 bp in length, including 13 protein-coding genes (PCGs), two ribosomal RNAs, 22 tRNAs, and one putative control region, and has the same gene order with Daphnia. ATG and ATT were used as start codons in 11 PCGs, TTG was used in COX1 and GTG in ATP8. Six PCGs used an incomplete stop codon. Phylogenetic analysis based on 13 PCGs showed that, on genus level, Simocephalus was closely related to Daphnia.

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