4.4 Article

First complete mitochondrial genome of Rhodinia species (Lepidoptera: Saturniidae): genome description and phylogenetic implication

Journal

BULLETIN OF ENTOMOLOGICAL RESEARCH
Volume 112, Issue 2, Pages 243-252

Publisher

CAMBRIDGE UNIV PRESS
DOI: 10.1017/S0007485321000808

Keywords

Attacini; mitochondrial genome; phylogenetic relationship; Rhodinia fugax; Saturniidae

Categories

Funding

  1. National Natural Science Foundation of China [31972617]
  2. China Agriculture Research System [CARS-18]

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This study determined the mitochondrial genome of Rhodinia fugax and analyzed its characteristics and phylogenetic relationships within the Rhodinia genus. The mitochondrial genome of R. fugax is similar to other Saturniidae species and belongs to the Attacini tribe. This research provides valuable insights into the biology and evolution of wild silkmoths.
To explore the characteristics of the mitochondrial genome (mitogenome) of the squeaking silkmoths Rhodinia, a genus of wild silkmoths in the family Saturniidae of Lepidoptera, and reveal phylogenetic relationships, the mitogenome of Rhodinia fugax Butler was determined. This wild silkmoth spins a green cocoon that has potential significance in sericulture, and exhibits a unique feature that its larvae can squeak loudly when touched. The mitogenome of R. fugax is a circular molecule of 15,334 bp long and comprises 13 protein-coding genes, two ribosomal RNA genes, 22 transfer RNA genes, and an A + T-rich region, consistent with previous observations of Saturniidae species. The 370-bp A + T-rich region of R. fugax contains no tandem repeat elements and harbors several features common to the Bombycidea insects, but microsatellite AT repeat sequence preceded by the ATTTA motif is not present. Mitogenome-based phylogenetic analysis shows that R. fugax belongs to Attacini, instead of Saturniini. This study presents the first mitogenome for Rhodinia genus.

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