1.Key Laboratory of Freshwater Aquaculture and Enhancement of Anhui Province，Fisheries Research Institute，Anhui Academy of Agricultural Sciences，Hefei 230001，China；2.Fishery Management Station，Chaohu Administration，Hefei 238001，China
Abstract: To clarify the mitochondrial genome characteristics and phylogenetic status of goby (Taenioidescirratus), the complete mitochondrial genomes were analyzed in 12 samples collected from the Nandu River Estuary, Pearl River Estuary, Taihu Lake, Chaohu Lake and Nansi Lake and download the mitochondrial genome sequences of closely related species for phylogenetic analysis by the second generation high throughput sequencing technology. Results showed that the length of individual mitochondrial genome was ranged from 16 641 to 16 978 bp, containing 13 protein coding genes (PCGs), 22 tRNA genes, 2 rRNA genes and the D-loop. The length of each coding gene sequence for every sample was relatively consistent, and the difference in length of the mitochondrial genome was mainly caused by the difference in D-loop length (975-1 314 bp). Based on the 13 PCG and 2 rRNA gene sequences, phylogenetic analysis combined the sequences in present study with published closely related mitogenomes showed that the goby was divided into 3 major clades. Samples from Taihu Lake, Chaohu Lake and Nansi Lake were clustered into one clade while samples from the Nandu River Estuary or the Pearl River Estuary were divided into two clades. Cladistic analysis depicted that T.cirratus was showed to form a paraphyletic group with Odontamblyopusrubicundus and Taenioidesanguillaris. The uplift of the Qinghai-Tibet Plateau and the formation of the Asian monsoon that brought about changes in water system pattern in China were the likely causes for the formation of T.cirratus current phylogenetic status. The finding provides crucially important basis for the resource conservation and further taxonomic clarification of T.cirratus.
2023, Vol. 38 
