Multiple paths towards repeated phenotypic evolution in the spiny-leg adaptive radiation (Tetragnatha; Hawaii)

Author:

Cerca JoséORCID,Cotoras Darko D.,Santander Cindy G.,Bieker Vanessa C.,Hutchins Leke,Morin-Lagos Jaime,Prada Carlos F.,Kennedy Susan,Krehenwinkel Henrik,Rominger Andrew J.ORCID,Meier Joana,Dimitrov Dimitar,Struck Torsten H.,Gillespie Rosemary G.

Abstract

AbstractThe repeated evolution of phenotypes is ubiquitous in nature and offers some of the clearest evidence of the role of natural selection in evolution. The genomic basis of repeated phenotypic evolution is often complex and can arise from a combination of gene flow, shared ancestral polymorphism andde novomutation. Here, we investigate the genomic basis of repeated ecomorph evolution in the adaptive radiation of the Hawaiian spiny-legTetragnatha. This radiation comprises four ecomorphs that are microhabitat-specialists, and differ in body pigmentation and size (Green, Large Brown, Maroon, and Small Brown). Using 76 newly generated low-coverage, whole-genome resequencing samples, coupled with population genomic and phylogenomic tools, we studied the evolutionary history of the radiation to understand the evolution of the spiny-leg lineage and the genetic underpinnings of ecomorph evolution. Congruent with previous works, we find that each ecomorph has evolved twice, with the exception of the Small Brown ecomorph, which has evolved three times. The evolution of the Maroon and the Small Brown ecomorphs likely involved ancestral hybridization events, whereas the Green and the Large Brown ecomorphs likely evolved because of either standing genetic variation orde novomutation. Pairwise comparisons of ecomorphs based on the fixation index (FST) show that divergent genomic regions include genes with functions associated with pigmentation (melanization), learning, neuronal and synapse activity, and circadian rhythms. These results show that the repeated evolution of ecomorphs in the Hawaiian spiny-legTetragnathais linked to multiple genomic regions and suggests a previously unknown role of learning and circadian rhythms in ecomorph.

Publisher

Cold Spring Harbor Laboratory

Reference86 articles.

1. Andrews, S. 2017. FastQ C: a quality control tool for high throughput sequence data. 2010.

2. Functional Genomics of Odor-guided Behavior in Drosophila melanogaster

3. Adaptation from standing genetic variation

4. A Variable G enetic Architecture of Melanic Evolution in Drosophila melanogaster;G enetics,2016

5. Circadian rhythms and endocrine functions in adult insects

同舟云学术

1.学者识别学者识别

2.学术分析学术分析

3.人才评估人才评估

"同舟云学术"是以全球学者为主线,采集、加工和组织学术论文而形成的新型学术文献查询和分析系统,可以对全球学者进行文献检索和人才价值评估。用户可以通过关注某些学科领域的顶尖人物而持续追踪该领域的学科进展和研究前沿。经过近期的数据扩容,当前同舟云学术共收录了国内外主流学术期刊6万余种,收集的期刊论文及会议论文总量共计约1.5亿篇,并以每天添加12000余篇中外论文的速度递增。我们也可以为用户提供个性化、定制化的学者数据。欢迎来电咨询!咨询电话:010-8811{复制后删除}0370

www.globalauthorid.com

TOP

Copyright © 2019-2024 北京同舟云网络信息技术有限公司
京公网安备11010802033243号  京ICP备18003416号-3