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Characteristics and Comparative Analysis of Six Mitogenomes of Genus Goetghebuer, 1922 (Diptera: Chironomidae). | LitMetric

Characteristics and Comparative Analysis of Six Mitogenomes of Genus Goetghebuer, 1922 (Diptera: Chironomidae).

Insects

Engineering Research Center of Environmental DNA and Ecological Water Health Assessment, Shanghai Ocean University, Shanghai 201306, China.

Published: August 2024

AI Article Synopsis

  • Chironomidae is a diverse family of insects that can indicate the health of aquatic ecosystems; this study sequenced six species of the genus Goetghebuer to analyze their mitochondrial genomes.* ! -
  • The newly sequenced mitochondrial genomes ranged from 15,588 to 15,767 base pairs and contained various components like tRNAs, PCGs, rRNAs, and a high AT-content control region.* ! -
  • Phylogenetic analysis showed that the six newly sequenced species form a monophyletic group, with evolutionary rates varying among them indicated by lower nonsynonymous to synonymous substitution ratios.* !

Article Abstract

Chironomidae is a cosmopolitan and species-rich family of insects, with many species serving as useful indicators of aquatic ecosystem health. In this study, we newly sequenced six species of Goetghebuer, 1922 (Chironomidae: Chironominae) by high-throughput sequencing technology. We analyzed characters of the mitochondrial genome, including the sequence length, nucleotide composition, and evolutionary rates of this genus. The size of the newly obtained sequences ranged from 15,588 to 15,767 bp, and all of them included 22 tRNAs, 13 PCGs, 2 rRNAs, and 1 CR. The CR showed the highest AT content relative to the PCGs, rRNAs, and tRNAs. Relative synonymous codon usage analysis showed that UUA, UUU, and AUU are the preferred codons. The ratio of nonsynonymous (Ka) to synonymous (Ks) substitution rates showed that all Ka/Ks of PCGs were lower than 1, with having the highest evolution rate, while exhibited the lowest evolution rate. We reconstructed the phylogenetic relationship of the genus based on eight species (six ingroups and two outgroups), using five matrices and employing Maximum likelihood and Bayesian inference approaches. Phylogenetic analysis of the showed that six species within this genus were classified into a monophyletic clade.

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Source
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC11432734PMC
http://dx.doi.org/10.3390/insects15090646DOI Listing

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