03461nas a2200217 4500008004100000022001400041245011900055210006900174260001600243300000900259490000700268520275400275653002503029653002603054653001403080100001603094700001203110700001803122700001703140856008603157 2020 eng d a1756-330500aVariation of mitochondrial minichromosome composition in Hoplopleura lice (Phthiraptera: Hoplopleuridae) from rats0 aVariation of mitochondrial minichromosome composition in Hoplopl cOct-06-2020 a9 pp0 v133 a

Background The family Hoplopleuridae contains at least 183 species of blood-sucking lice, which widely parasitize both mice and rats. Fragmented mitochondrial (mt) genomes have been reported in two rat lice (Hoplopleura kitti and H. akanezumi) from this family, but some minichromosomes were unidentified in their mt genomes. 

Methods We sequenced the mt genome of the rat louse Hoplopleura sp. with an Illumina platform and compared its mt genome organization with H. kitti and H. akanezumi.

Results Fragmented mt genome of the rat louse Hoplopleura sp. contains 37 genes which are on 12 circular mt minichromosomes. Each mt minichromosome is 1.8–2.7 kb long and contains 1–5 genes and one large non-coding region. The gene content and arrangement of mt minichromosomes of Hoplopleura sp. (n = 3) and H. kitti (n = 3) are different from those in H. akanezumi (n = 3). Phylogenetic analyses based on the deduced amino acid sequences of the eight protein-coding genes showed that the Hoplopleura sp. was more closely related to H. akanezumi than to H. kitti, and then they formed a monophyletic group.

Conclusions Comparison among the three rat lice revealed variation in the composition of mt minichromosomes within the genus Hoplopleura. Hoplopleura sp. is the first species from the family Hoplopleuridae for which a complete fragmented mt genome has been sequenced. The new data provide useful genetic markers for studying the population genetics, molecular systematics and phylogenetics of blood-sucking lice.

Preprint version see https://www.researchsquare.com/article/rs-42350/v1 and the title of preprint version is "Variation in mitochondrial minichromosome composition among Hoplopleura lice (Phthiraptera: Hoplopleuridae) from rats"

 

10aFragmented mt genome10aPhylogenetic analyses10aRat louse1 aFu, Yi-Tian1 aNie, Yu1 aDuan, De-Yong1 aLiu, Guo-Hua uhttps://parasitesandvectors.biomedcentral.com/articles/10.1186/s13071-020-04381-y