Comparative transcriptomics highlights convergent evolution of energy metabolic pathways in group-living spiders
Comparative transcriptomics highlights convergent evolution of energy metabolic pathways in group-living spiders作者机构：Key Laboratory of Zoological Systematics and EvolutionInstitute of ZoologyChinese Academy of SciencesBeijing 100101China Chengdu Institute of BiologyChinese Academy of SciencesChengduSichuan 610041China College of Life ScienceHunan Normal UniversityChangshaHunan 410081China College of Life SciencesUniversity of Chinese Academy of SciencesBeijing 100049China
出 版 物：《Zoological Research》 (动物学研究（英文）)
年 卷 期：2021年第42卷第2期
页 面：195-206页
核心收录：
学科分类：0710[理学-生物学] 07[理学] 071002[理学-动物学]
主 题：Autophagy Cannibalism Convergent Group-living Nutrient Spider
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 groupliving 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 groupliving 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.
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