Genomes of Two Flying Squid Species Provide Novel Insights into Adaptations of Cephalopods to Pelagic Life
文献类型： 外文期刊
作者： Li, Min 1 ; Wu, Baosheng 2 ; Zhang, Peng 1 ; Li, Ye 2 ; Xu, Wenjie 2 ; Wang, Kun 2 ; Qiu, Qiang 2 ; Zhang, Jun 1 ; Li, Jie 1 ; Zhang, Chi 5 ; Fan, Jiangtao 1 ; Feng, Chenguang 2 ; Chen, Zuozhi 1 ;
作者机构： 1.South China Sea Fisheries Res Inst, Chinese Acad Fishery Sci, Guangzhou 510300, Peoples R China
2.Northwestern Polytech Univ, Sch Ecol & Environm, Xian 710072, Peoples R China
3.Southern Marine Sci & Engn Guangdong Lab Guangzhou, Guangzhou 511458, Peoples R China
4.Guangdong Prov Key Lab Fishery Ecol & Environm, Key Lab Sustainable Utilizat Open Sea Fishery, Minist Agr & Rural Affairs, Guangzhou 510300, Peoples R China
5.Chinese Acad Sci, Northwest Inst Plateau Biol, Qinghai Prov Key Lab Crop Mol Breeding, CAS Key Lab Adaptat & Evolut Plateau Biota, Xining 810008, Peoples R China
6.Chinese Acad Sci, Inst Hydrobiol, CAS Key Lab Aquat Biodivers & Conservat, Wuhan 430072, Peoples R China
关键词： Cephalopoda; Evolution; Flying squid; Genome; Photophore
期刊名称：GENOMICS PROTEOMICS & BIOINFORMATICS （ 影响因子：9.5； 五年影响因子：10.1 ）
ISSN： 1672-0229
年卷期： 2022 年 20 卷 6 期
页码：
收录情况： SCI
摘要： Pelagic cephalopods have evolved a series of fascinating traits, such as excellent visual acuity, high-speed agility, and photophores for adaptation to open pelagic oceans. However, the genetic mechanisms underpinning these traits are not well understood. Thus, in this study, we obtained high-quality genomes of two purpleback flying squid species (Sthenoteuthis oualaniensis and Sthenoteuthis sp.), with sizes of 5450 Mb and 5651 Mb, respectively. Comparative genomic analyses revealed that the S-crystallin subfamily SL20-1 associated with visual acuity in the purpleback flying squid lineage was significantly expanded, and the evolution of high-speed agility for the species was accompanied by significant positive selection pressure on genes related to energy metabolism. These molecular signals might have contributed to the evolution of their adaptative predatory and anti-predatory traits. In addition, the transcriptomic analysis provided clear indications of
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