Sandra Ludwig, Laís Amorim, Alberty Xavier, Paula Rodrigues Guimarães, Sarah Maria Vargas
{"title":"History matters: evolutionary and demographic reconstruction of the Southwest Atlantic loggerheads (Testudinata: Cheloniidae)","authors":"Sandra Ludwig, Laís Amorim, Alberty Xavier, Paula Rodrigues Guimarães, Sarah Maria Vargas","doi":"10.1007/s10682-024-10312-5","DOIUrl":null,"url":null,"abstract":"<p>The Southwest Atlantic (SWA) is an important region for the <i>Caretta caretta</i> characterized by unique genetic lineages; however, their demographic evolution is still misunderstood. In this study, we evaluated the demographic patterns of four SWA rookeries using D-loop and microsatellites data looking for expansion and bottlenecks signals. Then, we simulated several colonization scenarios for the SWA using Approximate Bayesian Computation. The best-supported scenario indicated that loggerheads might have colonized the SWA region once by the ancient lineage of ES/k3 that signals a sharing ancestry history, and from it originated the other lineages by divergence and introgression processes, explaining the high admixture levels between their rookeries and genetic clusters. The D-loop recovered population stability in the past. Still, microsatellites identified sharp recent bottleneck events, which the Last Glacial Maximum, El Niño Southern Oscillation, and anthropogenic actions may have triggered. Thus, we provide, for the first time, a complete assessment of the life history and colonization of loggerhead into the SWA, demonstrating differences between markers (matrilinear and biparental) that may bias our understanding of their genetic and demographic patterns, and which should be considered for conservation programs at a global scale.</p>","PeriodicalId":55158,"journal":{"name":"Evolutionary Ecology","volume":"106 1","pages":""},"PeriodicalIF":1.8000,"publicationDate":"2024-08-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Evolutionary Ecology","FirstCategoryId":"93","ListUrlMain":"https://doi.org/10.1007/s10682-024-10312-5","RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"ECOLOGY","Score":null,"Total":0}
引用次数: 0
Abstract
The Southwest Atlantic (SWA) is an important region for the Caretta caretta characterized by unique genetic lineages; however, their demographic evolution is still misunderstood. In this study, we evaluated the demographic patterns of four SWA rookeries using D-loop and microsatellites data looking for expansion and bottlenecks signals. Then, we simulated several colonization scenarios for the SWA using Approximate Bayesian Computation. The best-supported scenario indicated that loggerheads might have colonized the SWA region once by the ancient lineage of ES/k3 that signals a sharing ancestry history, and from it originated the other lineages by divergence and introgression processes, explaining the high admixture levels between their rookeries and genetic clusters. The D-loop recovered population stability in the past. Still, microsatellites identified sharp recent bottleneck events, which the Last Glacial Maximum, El Niño Southern Oscillation, and anthropogenic actions may have triggered. Thus, we provide, for the first time, a complete assessment of the life history and colonization of loggerhead into the SWA, demonstrating differences between markers (matrilinear and biparental) that may bias our understanding of their genetic and demographic patterns, and which should be considered for conservation programs at a global scale.
期刊介绍:
Evolutionary Ecology is a concept-oriented journal of biological research at the interface of ecology and evolution. We publish papers that therefore integrate both fields of research: research that seeks to explain the ecology of organisms in the context of evolution, or patterns of evolution as explained by ecological processes.
The journal publishes original research and discussion concerning the evolutionary ecology of organisms. These may include papers addressing evolutionary aspects of population ecology, organismal interactions and coevolution, behaviour, life histories, communication, morphology, host-parasite interactions and disease ecology, as well as ecological aspects of genetic processes. The objective is to promote the conceptual, theoretical and empirical development of ecology and evolutionary biology; the scope extends to any organism or system.
In additional to Original Research articles, we publish Review articles that survey recent developments in the field of evolutionary ecology; Ideas & Perspectives articles which present new points of view and novel hypotheses; and Comments on articles recently published in Evolutionary Ecology or elsewhere. We also welcome New Tests of Existing Ideas - testing well-established hypotheses but with broader data or more methodologically rigorous approaches; - and shorter Natural History Notes, which aim to present new observations of organismal biology in the wild that may provide inspiration for future research. As of 2018, we now also invite Methods papers, to present or review new theoretical, practical or analytical methods used in evolutionary ecology.
Students & Early Career Researchers: We particularly encourage, and offer incentives for, submission of Reviews, Ideas & Perspectives, and Methods papers by students and early-career researchers (defined as being within one year of award of a PhD degree) – see Students & Early Career Researchers