國立虎尾科技大學 |

High Conductivity Contributes to Population Isolation of a Small-Bodied, Benthic, Headwater-Specialist Fish (Percidae).

Record Type:	Language materials, manuscript : Monograph/item
Title/Author:	High Conductivity Contributes to Population Isolation of a Small-Bodied, Benthic, Headwater-Specialist Fish (Percidae)./
Author:	Watson, River A.
Description:	1 online resource (59 pages)
Notes:	Source: Masters Abstracts International, Volume: 85-06.
Contained By:	Masters Abstracts International85-06.
Subject:	Biology. -
Online resource:	click for full text (PQDT)
ISBN:	9798381092042

High Conductivity Contributes to Population Isolation of a Small-Bodied, Benthic, Headwater-Specialist Fish (Percidae).
Watson, River A.

High Conductivity Contributes to Population Isolation of a Small-Bodied, Benthic, Headwater-Specialist Fish (Percidae). - 1 online resource (59 pages)

Source: Masters Abstracts International, Volume: 85-06.

Thesis (M.S.)--Austin Peay State University, 2023.

Includes bibliographical references

Due to the linear and hierarchical distribution of populations in aquatic systems, genetic differentiation is often driven by geographic distance (isolation by distance). Habitat fragmentation often exacerbates this effect by decreasing connectivity, leading to isolation by resistance. We aimed to identify specific landscape factors driving isolation in an imperiled, small-bodied, headwater species, the Kentucky Arrow Darter (Etheostoma spilotum). Stronghold populations of E. spilotum in the South Fork Kentucky River system within the Daniel Boone National Forest were previously found to have high population structure not explained by distance alone. Higher than expected levels of genetic differentiation among proximate populations were hypothesized to be driven by land use change, but this was not previously tested. Here we use riverscape genetics to test for the effects of natural landscape features including slope, elevation, and stream size, and anthropogenically altered habitat features, including specific conductance (conductivity), culverts, and forest cover, on population connectivity and genetic diversity of E. spilotum. We found isolation among all tributary systems and a strong positive relationship between genetic and geographic distance as expected. High conductivity levels due to surface coal mining best explain the population structure observed, suggesting isolation by resistance of increased conductivity best explains patterns of genetic differentiation. We also found signatures of low genetic diversity overall and potential early warning signs that suggest culverts may limit upstream movements of E. spilotum.

Electronic reproduction.
Ann Arbor, Mich. :
ProQuest,
2024

Mode of access: World Wide Web

ISBN: 9798381092042Subjects--Topical Terms:

599573
Biology.
Subjects--Index Terms:

Etheostoma spilotumIndex Terms--Genre/Form:

554714
Electronic books.

High Conductivity Contributes to Population Isolation of a Small-Bodied, Benthic, Headwater-Specialist Fish (Percidae).
LDR:02988ntm a2200373K 4500 001 1141448
005 20240315085543.5
006 m o d
007 cr mn ---uuuuu
008 250605s2023 xx obm 000 0 eng d
020 $a 9798381092042
035 $a (MiAaPQ)AAI30572002
035 $a AAI30572002
040 $a MiAaPQ $b eng $c MiAaPQ $d NTU
100 1 $a Watson, River A. $3 1465221
245 1 0 $a High Conductivity Contributes to Population Isolation of a Small-Bodied, Benthic, Headwater-Specialist Fish (Percidae).
264 0 $c 2023
300 $a 1 online resource (59 pages)
336 $a text $b txt $2 rdacontent
337 $a computer $b c $2 rdamedia
338 $a online resource $b cr $2 rdacarrier
500 $a Source: Masters Abstracts International, Volume: 85-06.
500 $a Advisor: Johansen, Rebecca.
502 $a Thesis (M.S.)--Austin Peay State University, 2023.
504 $a Includes bibliographical references
520 $a Due to the linear and hierarchical distribution of populations in aquatic systems, genetic differentiation is often driven by geographic distance (isolation by distance). Habitat fragmentation often exacerbates this effect by decreasing connectivity, leading to isolation by resistance. We aimed to identify specific landscape factors driving isolation in an imperiled, small-bodied, headwater species, the Kentucky Arrow Darter (Etheostoma spilotum). Stronghold populations of E. spilotum in the South Fork Kentucky River system within the Daniel Boone National Forest were previously found to have high population structure not explained by distance alone. Higher than expected levels of genetic differentiation among proximate populations were hypothesized to be driven by land use change, but this was not previously tested. Here we use riverscape genetics to test for the effects of natural landscape features including slope, elevation, and stream size, and anthropogenically altered habitat features, including specific conductance (conductivity), culverts, and forest cover, on population connectivity and genetic diversity of E. spilotum. We found isolation among all tributary systems and a strong positive relationship between genetic and geographic distance as expected. High conductivity levels due to surface coal mining best explain the population structure observed, suggesting isolation by resistance of increased conductivity best explains patterns of genetic differentiation. We also found signatures of low genetic diversity overall and potential early warning signs that suggest culverts may limit upstream movements of E. spilotum.
533 $a Electronic reproduction. $b Ann Arbor, Mich. : $c ProQuest, $d 2024
538 $a Mode of access: World Wide Web
650 4 $a Biology. $3 599573
650 4 $a Aquatic sciences. $3 1178821
653 $a Etheostoma spilotum
653 $a Percidae
653 $a Isolation
653 $a Hheadwater species
655 7 $a Electronic books. $2 local $3 554714
690 $a 0306
690 $a 0792
710 2 $a ProQuest Information and Learning Co. $3 1178819
710 2 $a Austin Peay State University. $b Biology. $3 1465222
773 0 $t Masters Abstracts International $g 85-06.
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=30572002 $z click for full text (PQDT)