Comparative transcriptomics highlights convergent evolution of energy metabolic pathways in group-living spiders

被引:4
|
作者
Yang, Han [1 ,4 ]
Lyu, Bin [2 ]
Yin, Hai-Qiang [3 ]
Li, Shu-Qiang [1 ,4 ]
机构
[1] Chinese Acad Sci, Inst Zool, Key Lab Zool Systemat & Evolut, Beijing 100101, Peoples R China
[2] Chinese Acad Sci, Chengdu Inst Biol, Chengdu 610041, Sichuan, Peoples R China
[3] Hunan Normal Univ, Coll Life Sci, Changsha 410081, Hunan, Peoples R China
[4] Univ Chinese Acad Sci, Coll Life Sci, Beijing 100049, Peoples R China
关键词
Autophagy; Cannibalism; Convergent; Group-living; Nutrient; Spider; PHYLOGENETIC ANALYSIS; ADAPTIVE ADVANTAGES; AGELENA-CONSOCIATA; SOCIAL-BEHAVIOR; MATERNAL-CARE; ARANEAE; PREY; ALIGNMENT; FOOD; CANNIBALISM;
D O I
10.24272/j.issn.2095-8137.2020.281
中图分类号
Q95 [动物学];
学科分类号
071002 ;
摘要
Although widely thought to be aggressive, solitary, and potentially cannibalistic, some spider species have evolved group-living behaviors. The distinct transition provides the framework to uncover group-living evolution. Here, we conducted a comparative transcriptomic study and examined patterns of molecular evolution in two independently evolved group-living spiders and twelve solitary species. We report that positively selected genes among group-living spider lineages are significantly enriched in nutrient metabolism and autophagy pathways. We also show that nutrient-related genes of group-living spiders convergently experience amino acid substitutions and accelerated relative evolutionary rates. These results indicate adaptive convergence of nutrient metabolism that may ensure energy supply in group-living spiders. The decelerated evolutionary rate of autophagy-related genes in group-living lineages is consistent with an increased constraint on energy homeostasis as would be required in a group-living environment. Together, the results show that energy metabolic pathways play an important role in the transition to group-living in spiders.
引用
收藏
页码:195 / 206
页数:12
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