干旱区生态环境知识资源中心(Arid): Defining relictual biodiversity: Conservation units in speckled dace (Leuciscidae:Rhinichthys osculus) of the Greater Death Valley ecosystem

Arid

DOI	10.1002/ece3.6736
	Defining relictual biodiversity: Conservation units in speckled dace (Leuciscidae:Rhinichthys osculus) of the Greater Death Valley ecosystem
	Mussmann, Steven M.; Douglas, Marlis R.; Oakey, David D.; Douglas, Michael E.
通讯作者	Mussmann, SM
来源期刊	ECOLOGY AND EVOLUTION
ISSN	2045-7758
出版年	2020
卷号	10 期号:19 页码:10798-10817
英文摘要	The tips in the tree of life serve as foci for conservation and management, yet clear delimitations are masked by inherent variance at the species-population interface. Analyses using thousands of nuclear loci can potentially sort inconsistencies, yet standard categories applied to this parsing are themselves potentially conflicting and/or subjective [e.g., DPS (distinct population segments); DUs (Diagnosable Units-Canada); MUs (management units); SSP (subspecies); ESUs (Evolutionarily Significant Units); and UIEUs (uniquely identified evolutionary units)]. One potential solution for consistent categorization is to create a comparative framework by accumulating statistical results from independent studies and evaluating congruence among data sets. Our study illustrates this approach in speckled dace (Leuciscidae:Rhinichthys osculus) endemic to two basins (Owens and Amargosa) in the Death Valley ecosystem. These fish persist in the Mojave Desert as isolated Plio-Pleistocene relicts and are of conservation concern, but lack formal taxonomic descriptions/designations. Double digest RAD (ddRAD) methods identified 14,355 SNP loci across 10 populations (N = 140). Species delimitation analyses [multispecies coalescent (MSC) and unsupervised machine learning (UML)] delineated four putative ESUs.F(ST)outlier loci (N = 106) were juxtaposed to uncover the potential for localized adaptations. We detected one hybrid population that resulted from upstream reconnection of habitat following contemporary pluvial periods, whereas remaining populations represent relics of ancient tectonism within geographically isolated springs and groundwater-fed streams. Our study offers three salient conclusions: a blueprint for a multifaceted delimitation of conservation units; a proposed mechanism by which criteria for intraspecific biodiversity can be potentially standardized; and a strong argument for the proactive management of critically endangered Death Valley ecosystem fishes.
英文关键词	Amargosa Basin ddRAD machine learning Owens Basin phylogenomics selection SNPs
类型	Article
语种	英语
开放获取类型	Green Published, gold, Green Submitted
收录类别	SCI-E
WOS记录号	WOS:000564304700001
WOS关键词	SPECIES DELIMITATION ; INTROGRESSIVE HYBRIDIZATION ; MULTISPECIES COALESCENT ; GENETIC-DIVERGENCE ; FRESH-WATER ; EVOLUTIONARY ; DIVERSITY ; MODEL ; CLASSIFICATION ; TAXONOMY
WOS类目	Ecology ; Evolutionary Biology
WOS研究方向	Environmental Sciences & Ecology ; Evolutionary Biology
来源机构	Arizona State University
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/325903
作者单位	[Mussmann, Steven M.; Douglas, Marlis R.; Douglas, Michael E.] Univ Arkansas, Dept Biol Sci, Fayetteville, AR 72701 USA; [Oakey, David D.] Arizona State Univ, Sch Life Sci, Tempe, AZ USA; [Oakey, David D.] Arizona State Vet Home, Phoenix, AZ USA
推荐引用方式 GB/T 7714	Mussmann, Steven M.,Douglas, Marlis R.,Oakey, David D.,et al. Defining relictual biodiversity: Conservation units in speckled dace (Leuciscidae:Rhinichthys osculus) of the Greater Death Valley ecosystem[J]. Arizona State University,2020,10(19):10798-10817.
APA	Mussmann, Steven M.,Douglas, Marlis R.,Oakey, David D.,&Douglas, Michael E..(2020).Defining relictual biodiversity: Conservation units in speckled dace (Leuciscidae:Rhinichthys osculus) of the Greater Death Valley ecosystem.ECOLOGY AND EVOLUTION,10(19),10798-10817.
MLA	Mussmann, Steven M.,et al."Defining relictual biodiversity: Conservation units in speckled dace (Leuciscidae:Rhinichthys osculus) of the Greater Death Valley ecosystem".ECOLOGY AND EVOLUTION 10.19(2020):10798-10817.