Genomic insights into marine environment adaptation and conservation of the threatened olive ridley turtle ( Lepidochelys olivacea)

被引：0

作者：

Yang, Lin ^{[1
,2
]}

Chen, Yiting ^{[1
,3
]}

Wang, Shaofeng ^{[4
]}

Zhang, Chenglong ^{[5
]}

Huang, Xin ^{[6
]}

Du, Xin ^{[6
]}

Zhou, Wenliang ^{[1
]}

Wei, Fuwen ^{[1
,2
,6
]}

机构：

[1] Southern Marine Sci & Engn Guangdong Lab Guangzhou, Ctr Evolut & Conservat Biol, Guangzhou, Peoples R China

[2] Jiangxi Agr Univ, Coll Forestry, Jiangxi Key Lab Conservat Biol, Nanchang 330045, Jiangxi, Peoples R China

[3] Hong Kong Univ Sci & Technol, Dept Ocean Sci, Hong Kong, Peoples R China

[4] Guangdong Huidong Sea Turtle Natl Nat Reserve, Huizhou, Peoples R China

[5] Marine Protected Area Adm Sansha City, Hainan, Peoples R China

[6] Chinese Acad Sci, Inst Zool, CAS Key Lab Anim Ecol & Conservat Biol, Beijing 100101, Peoples R China

来源：

ISCIENCE | 2025年 / 28卷 / 02期

基金：

中国博士后科学基金; 中国国家自然科学基金;

关键词：

LIFE-SPAN; PHYLOGENETIC ANALYSIS; SEQUENCE DATABASE; HI-C; PROGRAM; EVOLUTION; ALIGNMENT; GENES; CHALLENGES; PREDICTION;

D O I：

10.1016/j.isci.2025.111776

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

Sea turtles are marine flagship species and most of them are currently in a threatened state. Long-term surviving in the ocean has driven significant morphological and physiological changes for this group, which makes them an ideal model for studying adaptive evolution of marine environments. Herein, we present a chromosome-scale genome of Lepidochelys olivacea with a genome size of 2.22 Gb and a contig N50 of 97.3 Mb. Comparative genomic analyses uncovered a suite of adaptive changes in genes related to olfaction, vision, virus defense, and longevity, which may help explain the genetic underpinnings of its marine environment adaptation. We also observed that the genome-wide heterozygosity of L. olivacea was low (6.45e-4), consistent with its prolonged population decline. Overall, our study provides valuable genetic resources for understanding evolutionary adaptations to aquatic environment and for the conservation of this threatened species.

引用

页数：17