RESUMO
In this study, we present the first representative complete Taphozous melanopogon mitochondrial genome from China. Its mitochondrial genome was assembled and annotated using MitoZ. The genome is a circular molecule of 16,566 bp in length, including 22 transfer RNA genes, 2 ribosomal RNA genes, 13 protein-coding genes, and a control region. Although maximum-likelihood and Bayesian inference phylogenetic trees indicate that the super family Emballonuridea forms a sister taxon with Noctilionidea instead of Vespertilionidea, mitochondrial genes provide only part of the phylogenetic information, and phylogenetic inferences utilizing nuclear genes are needed in future toward resolving phylogenetic relationship among Vespertilionidea, Noctilionidea, and Emballonuridea.
RESUMO
In this study, the complete mitochondrial genome of a male individual of Murina cyclotis from Guangxi province, China, was sequenced and analyzed. The genome is a circular molecule of 16,463 bp length, containing 13 protein-coding genes, 2 ribosomal RNA genes, 22 transfer RNA genes, and a control region. Most of the genes were encoded on the H-strand, except for 8 tRNA and ND6 genes. Phylogenetic trees of the complete mitochondrial genome were constructed using RAxML. Our result suggests that M. cyclotis is closely related to M. leucogaster from Korea. The complete mitochondrial genome sequence of M. cyclotis will be helpful for future taxonomic and phylogenetic studies on Murina.
RESUMO
Murina shuipuensis, a small-sized forest bat with distinct bright orange-yellow ventral fur, is only found from its type locality thus far. In this study, a complete mitochondrial genome of a male individual of M. shuipuensis from Shuifu Village, Libo, Guizhou China (type locality) was sequenced using Illumina Hiseq. Total length of its genome is 16,585 bp, including two rRNA genes, 22 tRNA genes, 13 protein-coding genes, and a control region. The general arrangement of genes is similar to the other chiropteran mitochondrial genomes. The phylogenetic inference indicates M. shuipuensis and M. leucogaster have closer phylogenetic relationship than other taxa that deposited in NCBI-nt. The complete mitochondrial genome provides valuable information for further taxonomic and phylogenetic researches.
RESUMO
As part of a global survey of schistosomes, a total of 16,109 freshwater snails representing 14 species were collected from lakes, ponds, rivers, rice fields and swamps mostly in the Terai region of southern Nepal. Only two snails were found to harbor avian schistosome cercariae even though Nepal is well known for its rich avian diversity. One schistosome infection was from an individual of Radix luteola and on the basis of phylogenetic analyses using 28S rDNA and cox1 sequences, grouped as a distinctive and previously unknown lineage within Trichobilharzia. This genus is the most speciose within the family Schistosomatidae. It includes 40 described species worldwide, and its members mostly infect anseriform birds (ducks) and two families of freshwater snails (Lymnaeidae and Physidae). The second schistosome cercaria was recovered from an individual of Indoplanorbis exustus that was also actively emerging a Petasiger-like echinostome cercaria. Although I. exustus is commonly infected with mammalian schistosomes of the Schistosoma indicum species group on the Indian subcontinent, this is the first specifically documented avian schistosome reported in this snail. Both cercariae reported here are among the largest of all schistosome cercariae recovered to date. The I. exustus-derived schistosome clustered most closely with Macrobilharzia macrobilharzia, although it seems to represent a distinct lineage. Specimens of Macrobilharzia have thus far not been recovered from snails, being known only as adult worms from anhingas and cormorants. This study is the first to characterize by sequence data avian schistosomes recovered from Asian freshwater habitats. This approach can help unravel the complex of cryptic species causing cercarial dermatitis here and elsewhere in the world.