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Table_3.DOCX

Resh, Carlee A. ; Galaska, Matthew P. ; Benesh, Kasey C. ; [et al.]

Frontiers Media SA ; 2021

In: Frontiers in Ecology and Evolution Vol. 9 ( 2021-2-5)

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In: Frontiers in Ecology and Evolution, Frontiers Media SA, Vol. 9 ( 2021-2-5)

Abstract: The introduction and subsequent range expansion of the Northern snakehead ( Channa argus : Channidae, Anabantiformes) is one of a growing number of problematic biological invasions in the United States. This harmful aquatic invasive species is a predatory freshwater fish native to northeastern Asia that, following deliberate introduction, has established itself in multiple water basins in the eastern United States, as well as expanding its range into the Midwest. Previous work assessed the population structure and estimated the long-term effective population sizes of the populations present in the United States, but the source of the initial introduction(s) to the U.S. remains unidentified. Building on earlier work, we used whole genome scans (2b-RAD genomic sequencing) to analyze single nucleotide polymorphisms (SNPs) from C. argus to screen the genomes of these invasive fish from United States waters and from three sites in their native range in China. We recovered 2,822 SNP loci from genomic DNA extracted from 164 fish sampled from the eastern United States and Arkansas (Mississippi River basin), plus 30 fish sampled from three regions of the Yangtze River basin in China ( n = 10 individuals per basin). Our results provide evidence supporting the Yangtze River basin in China, specifically the Bohu and/or Liangzi lakes, is a likely source of the C. argus introductions in multiple regions of the U.S., including the Lower Hudson River basin, Upper Hudson River basin and Philadelphia (Lower Delaware River basin). This information, in conjunction with additional sampling from the native range, will help to determine the source(s) of introduction for the other U.S. populations. Additionally, this work will provide valuable information for management to help prevent and manage future introductions into United States waterways, as well as aid in the development of more targeted strategies to regulate established populations and inhibit further spread.

Type of Medium: Online Resource

ISSN: 2296-701X

URL: Article

DOI: 10.3389/fevo.2021.575599

DOI: 10.3389/fevo.2021.575599.s001

DOI: 10.3389/fevo.2021.575599.s002

DOI: 10.3389/fevo.2021.575599.s003

Language: Unknown

Publisher: Frontiers Media SA

Publication Date: 2021

detail.hit.zdb_id: 2745634-1

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Table S3: Collection information for samples utilized in the current study

Resh, Carlee A. ; Galaska, Matthew P. ; Mahon, Andrew R.

PeerJ ; 2018

In: PeerJ Vol. 6 ( 2018-04-04), p. e4581-

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In: PeerJ, PeerJ, Vol. 6 ( 2018-04-04), p. e4581-

Abstract: The introduction of northern snakehead ( Channa argus ; Anabantiformes: Channidae) and their subsequent expansion is one of many problematic biological invasions in the United States. This harmful aquatic invasive species has become established in various parts of the eastern United States, including the Potomac River basin, and has recently become established in the Mississippi River basin in Arkansas. Effective management of C. argus and prevention of its further spread depends upon knowledge of current population structure in the United States. Methods Novel methods for invasive species using whole genomic scans provide unprecedented levels of data, which are able to investigate fine scale differences between and within populations of organisms. In this study, we utilize 2b-RAD genomic sequencing to recover 1,007 single-nucleotide polymorphism (SNP) loci from genomic DNA extracted from 165 C. argus individuals: 147 individuals sampled along the East Coast of the United States and 18 individuals sampled throughout Arkansas. Results Analysis of those SNP loci help to resolve existing population structure and recover five genetically distinct populations of C. argus in the United States. Additionally, information from the SNP loci enable us to begin to calculate the long-term effective population size ranges of this harmful aquatic invasive species. We estimate long-term N e to be 1,840,000–18,400,000 for the Upper Hudson River basin, 4,537,500–45,375,000 for the Lower Hudson River basin, 3,422,500–34,225,000 for the Potomac River basin, 2,715,000–7,150,000 for Philadelphia, and 2,580,000–25,800,000 for Arkansas populations. Discussion and Conclusions This work provides evidence for the presence of more genetic populations than previously estimated and estimates population size, showing the invasive potential of C. argus in the United States. The valuable information gained from this study will allow effective management of the existing populations to avoid expansion and possibly enable future eradication efforts.

Type of Medium: Online Resource

ISSN: 2167-8359

URL: Article

DOI: 10.7717/peerj.4581

DOI: 10.7717/peerj.4581/fig-1

DOI: 10.7717/peerj.4581/fig-2

DOI: 10.7717/peerj.4581/fig-3

DOI: 10.7717/peerj.4581/fig-4

DOI: 10.7717/peerj.4581/table-1

DOI: 10.7717/peerj.4581/table-2

DOI: 10.7717/peerj.4581/table-3

DOI: 10.7717/peerj.4581/table-4

DOI: 10.7717/peerj.4581/supp-1

DOI: 10.7717/peerj.4581/supp-2

DOI: 10.7717/peerj.4581/supp-3

Language: English

Publisher: PeerJ

Publication Date: 2018

detail.hit.zdb_id: 2703241-3

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