Exploring seascape genetics and kinship in the reef sponge Stylissa carteri in the Red Sea

Handle URI:
http://hdl.handle.net/10754/556183
Title:
Exploring seascape genetics and kinship in the reef sponge Stylissa carteri in the Red Sea
Authors:
Giles, Emily C.; Saenz Agudelo, Pablo; Hussey, Nigel E.; Ravasi, Timothy ( 0000-0002-9950-465X ) ; Berumen, Michael L. ( 0000-0003-2463-2742 )
Abstract:
A main goal of population geneticists is to study patterns of gene flow to gain a better understanding of the population structure in a given organism. To date most efforts have been focused on studying gene flow at either broad scales to identify barriers to gene flow and isolation by distance or at fine spatial scales in order to gain inferences regarding reproduction and local dispersal. Few studies have measured connectivity at multiple spatial scales and have utilized novel tools to test the influence of both environment and geography on shaping gene flow in an organism. Here a seascape genetics approach was used to gain insight regarding geographic and ecological barriers to gene flow of a common reef sponge, Stylissa carteri in the Red Sea. Furthermore, a small-scale (<1 km) analysis was also conducted to infer reproductive potential in this organism. At the broad scale, we found that sponge connectivity is not structured by geography alone, but rather, genetic isolation in the southern Red Sea correlates strongly with environmental heterogeneity. At the scale of a 50-m transect, spatial autocorrelation analyses and estimates of full-siblings revealed that there is no deviation from random mating. However, at slightly larger scales (100–200 m) encompassing multiple transects at a given site, a greater proportion of full-siblings was found within sites versus among sites in a given location suggesting that mating and/or dispersal are constrained to some extent at this spatial scale. This study adds to the growing body of literature suggesting that environmental and ecological variables play a major role in the genetic structure of marine invertebrate populations.
KAUST Department:
Red Sea Research Center (RSRC); Biological and Environmental Sciences and Engineering (BESE) Division
Citation:
Exploring seascape genetics and kinship in the reef sponge Stylissa carteri in the Red Sea 2015:n/a Ecology and Evolution
Journal:
Ecology and Evolution
Issue Date:
1-Jun-2015
DOI:
10.1002/ece3.1511
Type:
Article
ISSN:
20457758
Additional Links:
http://doi.wiley.com/10.1002/ece3.1511
Appears in Collections:
Articles; Red Sea Research Center (RSRC); Biological and Environmental Sciences and Engineering (BESE) Division

Full metadata record

DC FieldValue Language
dc.contributor.authorGiles, Emily C.en
dc.contributor.authorSaenz Agudelo, Pabloen
dc.contributor.authorHussey, Nigel E.en
dc.contributor.authorRavasi, Timothyen
dc.contributor.authorBerumen, Michael L.en
dc.date.accessioned2015-06-03T08:29:05Zen
dc.date.available2015-06-03T08:29:05Zen
dc.date.issued2015-06-01en
dc.identifier.citationExploring seascape genetics and kinship in the reef sponge Stylissa carteri in the Red Sea 2015:n/a Ecology and Evolutionen
dc.identifier.issn20457758en
dc.identifier.doi10.1002/ece3.1511en
dc.identifier.urihttp://hdl.handle.net/10754/556183en
dc.description.abstractA main goal of population geneticists is to study patterns of gene flow to gain a better understanding of the population structure in a given organism. To date most efforts have been focused on studying gene flow at either broad scales to identify barriers to gene flow and isolation by distance or at fine spatial scales in order to gain inferences regarding reproduction and local dispersal. Few studies have measured connectivity at multiple spatial scales and have utilized novel tools to test the influence of both environment and geography on shaping gene flow in an organism. Here a seascape genetics approach was used to gain insight regarding geographic and ecological barriers to gene flow of a common reef sponge, Stylissa carteri in the Red Sea. Furthermore, a small-scale (<1 km) analysis was also conducted to infer reproductive potential in this organism. At the broad scale, we found that sponge connectivity is not structured by geography alone, but rather, genetic isolation in the southern Red Sea correlates strongly with environmental heterogeneity. At the scale of a 50-m transect, spatial autocorrelation analyses and estimates of full-siblings revealed that there is no deviation from random mating. However, at slightly larger scales (100–200 m) encompassing multiple transects at a given site, a greater proportion of full-siblings was found within sites versus among sites in a given location suggesting that mating and/or dispersal are constrained to some extent at this spatial scale. This study adds to the growing body of literature suggesting that environmental and ecological variables play a major role in the genetic structure of marine invertebrate populations.en
dc.relation.urlhttp://doi.wiley.com/10.1002/ece3.1511en
dc.rightsThis is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited. http://creativecommons.org/licenses/by/4.0/en
dc.subjectrelatednessen
dc.subjectseascape geneticsen
dc.subjectporiferaen
dc.subjectisolation by environmenten
dc.subjectisolation by distanceen
dc.subjectEnvironmental gradienten
dc.titleExploring seascape genetics and kinship in the reef sponge Stylissa carteri in the Red Seaen
dc.typeArticleen
dc.contributor.departmentRed Sea Research Center (RSRC)en
dc.contributor.departmentBiological and Environmental Sciences and Engineering (BESE) Divisionen
dc.identifier.journalEcology and Evolutionen
dc.eprint.versionPublisher's Version/PDFen
dc.contributor.institutionGLIER; University of Windsor; Windsor Ontario Canadaen
dc.contributor.institutionInstituto de Ciencias Ambientales y Evolutivas, Universidad Austral de Chile, Valdivia, Chileen
kaust.authorGiles, Emilyen
kaust.authorSaenz Agudelo, Pabloen
kaust.authorRavasi, Timothyen
kaust.authorBerumen, Michael L.en
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