气候变化领域集成服务门户(CCPortal): Genetic predictors of population resilience: A case study of native Brook Trout in headwater streams

CCPortal

DOI	10.1002/nafm.11003
	Genetic predictors of population resilience: A case study of native Brook Trout in headwater streams
	Schwinghamer, Christopher W.; Hartman, Kyle J.; Welsh, Amy B.
发表日期	2024
ISSN	0275-5947
EISSN	1548-8675
英文摘要	ObjectivePopulations of eastern Brook Trout Salvelinus fontinalis face threats from several sources, such as habitat fragmentation, climate change, and competition with introduced salmonids. As a native species, understanding how these populations will respond to disturbances is paramount to their management and effective conservation. A population's ability to respond to disturbance, its resilience, is influenced by several factors. One such group of factors is population genetics.MethodsWe calculated population resilience metrics based on transient dynamics using population projection matrix models. Long-term demographic data from 23 headwater stream Brook Trout populations were used to parameterize models. Genetic data were collected, and genetic indices were calculated. Partial redundancy analysis was then used to evaluate relationships between resilience metrics and genetic indices.ResultInbreeding coefficient, rarefied allelic richness, pairwise genetic differentiation (FST), and effective population size were all found to be important variables in predicting resilience.ConclusionOur results suggest that genetic isolation may increase the demographic resilience in Brook Trout through faster generation times and higher juvenile survival, but this likely comes at the cost of increased extinction risk and truncated size structures. Genetic indices can provide insight into gene flow between populations, thus the relationship between population connectivity and resilience. Given the importance of connectivity to population resilience, restoring and maintaining movement corridors could affect resilience in headwater Brook Trout populations. Understanding the ability of a population to respond to disturbance, its resilience, is incredibly important in ecology and fisheries management. Many factors go into resilience, and this study explores how genetics can affect resilience in eastern Brook Trout populations and why genetics alone might not tell the whole story of a population's resilience.Impact statement
英文关键词	ecology; genetics; life history; population dynamics; riparian and stream
语种	英语
WOS研究方向	Fisheries
WOS类目	Fisheries
WOS记录号	WOS:001210962600001
来源期刊	NORTH AMERICAN JOURNAL OF FISHERIES MANAGEMENT
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/301078
作者单位	West Virginia University; Adams State University
推荐引用方式 GB/T 7714	Schwinghamer, Christopher W.,Hartman, Kyle J.,Welsh, Amy B.. Genetic predictors of population resilience: A case study of native Brook Trout in headwater streams[J],2024.
APA	Schwinghamer, Christopher W.,Hartman, Kyle J.,&Welsh, Amy B..(2024).Genetic predictors of population resilience: A case study of native Brook Trout in headwater streams.NORTH AMERICAN JOURNAL OF FISHERIES MANAGEMENT.
MLA	Schwinghamer, Christopher W.,et al."Genetic predictors of population resilience: A case study of native Brook Trout in headwater streams".NORTH AMERICAN JOURNAL OF FISHERIES MANAGEMENT (2024).