Complete mitochondrial genomes of eight seahorses and pipefishes (Syngnathiformes: Syngnathidae): insight into the adaptive radiation of syngnathid fishes
文献类型：期刊论文
| 作者 | Zhang, Yanhong; Wang, Xin1,3; Zhang, Huixian; Qin, Geng; Lin, Qiang1,3 |
| 刊名 | BMC EVOLUTIONARY BIOLOGY
 |
| 出版日期 | 2019 |
| 卷号 | 19页码:119 |
| 关键词 | Syngnathidae Seahorse Pipefish Evolution Purifying selection Mitogenome |
| ISSN号 | 1471-2148 |
| DOI | 10.1186/s12862-019-1430-3 |
| 英文摘要 | BackgroundThe evolution of male pregnancy is the most distinctive characteristic of syngnathids, and their specialized life history traits make syngnathid species excellent model species for many issues in biological evolution. However, the origin of syngnathids and the evolutionary divergence time of different syngnathid species remain poorly resolved. Comprehensive phylogenetic studies of the Syngnathidae will provide critical evidence to elucidate their origin, evolution, and dispersal patterns.ResultsWe sequenced the mitochondrial genomes of eight syngnathid species in this study, and the estimated divergence times suggested that syngnathids diverged from other teleosts approximately 48.8 Mya during the Eocene period. Selection analysis showed that many mitochondrial genes of syngnathids exhibited significantly lower Ka/Ks values than those of other teleosts. The two most frequently used codons in syngnathid fishes were different from those in other teleosts, and a greater proportion of the mitochondrial simple sequence repeats (SSRs) were distributed in non-coding sequences in syngnathids compared with other teleosts.ConclusionsOur study indicated that syngnathid fishes experienced an adaptive radiation process during the early explosion of species. Syngnathid mitochondrial OXPHOS genes appear to exhibit depressed Ka/Ks ratios compared with those of other teleosts, and this may suggest that their mitogenomes have experienced strong selective constraints to eliminate deleterious mutations. |
| 源URL | [http://ir.scsio.ac.cn/handle/344004/17826]  |
| 专题 | 南海海洋研究所_中科院海洋生物资源可持续利用重点实验室 |
| 作者单位 | 1.Pilot Natl Lab Marine Sci & Technol Qingdao, Lab Marine Fisheries Sci & Food Prod Proc, Qingdao 266237, Shandong, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.Chinese Acad Sci, Inst South China Sea Ecol & Environm Engn, South China Sea Inst Oceanol, CAS Key Lab Trop Marine Bioresources & Ecol, Guangzhou 510301, Guangdong, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhang, Yanhong,Wang, Xin,Zhang, Huixian,et al. Complete mitochondrial genomes of eight seahorses and pipefishes (Syngnathiformes: Syngnathidae): insight into the adaptive radiation of syngnathid fishes[J]. BMC EVOLUTIONARY BIOLOGY,2019,19:119. |
| APA | Zhang, Yanhong,Wang, Xin,Zhang, Huixian,Qin, Geng,&Lin, Qiang.(2019).Complete mitochondrial genomes of eight seahorses and pipefishes (Syngnathiformes: Syngnathidae): insight into the adaptive radiation of syngnathid fishes.BMC EVOLUTIONARY BIOLOGY,19,119. |
| MLA | Zhang, Yanhong,et al."Complete mitochondrial genomes of eight seahorses and pipefishes (Syngnathiformes: Syngnathidae): insight into the adaptive radiation of syngnathid fishes".BMC EVOLUTIONARY BIOLOGY 19(2019):119. |
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来源：南海海洋研究所
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