Natal and intergenerational dispersal of riverine smallmouth bass (Micropterus dolomieu)

Simple item page
dc.contributor.authorHumston, Roberten
dc.contributor.authorHallerman, Eric M.en
dc.contributor.authorSmith, Scotten
dc.contributor.authorSorenson, Julien
dc.contributor.authorMuckleroy, Garretten
dc.date.accessioned2021-11-30T15:26:12Zen
dc.date.available2021-11-30T15:26:12Zen
dc.date.issued2021-11en
dc.description.abstractQuantifying the scale of offspring dispersal is essential for understanding demographic connectivity across landscapes and rates of population spread. However, characterizing natal dispersal in fishes is complicated by the difficulties of tracking origins and movement during early life-history stages. We combined direct observation of natal dispersal based on otolith chemistry with indirect estimates of dispersal from population genetics to quantify intergenerational dispersal of smallmouth bass (Micropterus dolomieu) inhabiting a river network. Average parent-offspring dispersal was estimated as 7.7 km from genetic isolation-by-distance and demographic population data. Otolith chemistry indicated that adults were captured an average of 8.3 km from their natal tributary, supporting the genetics-based estimate. Our estimate of intergenerational dispersal is higher than previous estimates for lotic fishes and considerably higher than estimates for smallmouth bass in lake systems. Differences in availability of seasonal habitats for small-mouth bass may account for the contrasting scales of dispersal between lake and river populations. The large intergenerational dispersal distance of riverine smallmouth bass should be considered in conservation of fisheries or efforts to control invasive populations in river networks.en
dc.description.notesThis project was funded in part by grants to Washington and Lee University from the Andrew W. Mellon Foundation and from the Howard HughesMedical Institute through the Precollege and Undergraduate Science Education Program and to R.H. from the Jeffress Memorial Trust (J-1038). The participation of coauthor E.M.H. was supported in part by the Virginia Agricultural Experiment Station under the Hatch Program administered through the US Department of Agriculture National Institute for Food and Agriculture.en
dc.description.sponsorshipAndrew W. Mellon Foundation; Howard Hughes Medical Institute through the Precollege and Undergraduate Science Education Program; Jeffress Memorial Trust [J-1038]; Virginia Agricultural Experiment Station under the Hatch Programen
dc.description.versionPublished versionen
dc.format.mimetypeapplication/pdfen
dc.identifier.doihttps://doi.org/10.1139/cjfas-2020-0322en
dc.identifier.eissn1205-7533en
dc.identifier.issn0706-652Xen
dc.identifier.issue11en
dc.identifier.urihttp://hdl.handle.net/10919/106777en
dc.identifier.volume78en
dc.language.isoenen
dc.rightsCreative Commons Attribution 4.0 Internationalen
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/en
dc.titleNatal and intergenerational dispersal of riverine smallmouth bass (Micropterus dolomieu)en
dc.title.serialCanadian Journal of Fisheries and Aquatic Sciencesen
dc.typeArticle - Refereeden
dc.type.dcmitypetexten

Files

Original bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
cjfas-2020-0322.pdf
Size:
5.25 MB
Format:
Adobe Portable Document Format
Description:
Published version
Download

Collections

Scholarly Works, Fish and Wildlife Conservation