Absence of genetic differentiation in the coral Pocillopora verrucosa along environmental gradients of the Saudi Arabian Red Sea

Handle URI:
http://hdl.handle.net/10754/346675
Title:
Absence of genetic differentiation in the coral Pocillopora verrucosa along environmental gradients of the Saudi Arabian Red Sea
Authors:
Robitzch, Vanessa S.N.; Banguera Hinestroza, Eulalia; Sawall, Yvonne; Al-Sofyani, Abdulmohsin; Voolstra, Christian R. ( 0000-0003-4555-3795 )
Abstract:
The Red Sea is the world's northernmost tropical sea. The 2000 km long, but narrow basin creates distinct environmental conditions along its latitudinal spread. The Red Sea displays a pronounced salinity gradient from 41 to 37 PSU (north to south) with an opposing temperature gradient from 21 to 27°C in the north to 27–33.8°C in the south. The Red Sea further displays a decreasing nutrient gradient from south to north that can also influence underwater light fields due to higher phytoplankton content and turbidity. Despite this strong variation in temperature, salinity, nutrients, and light conditions, the Red Sea supports large and diverse coral reef ecosystems along its nearly entire coastline. Only few studies have targeted whether these prevailing gradients affect genetic connectivity of reef organisms in the Red Sea. In this study, we sampled the abundant reef-building coral Pocillopora verrucosa from 10 reefs along a latitudinal gradient in the Red Sea covering an area of more than 850 km. We used nine Pocillopora microsatellite markers to assess the underlying population genetic structure and effective population size. To assure the exclusion of cryptic species, all analyzed specimens were chosen from a single mitochondrial lineage. Despite large distances between sampled regions covering pronounced, but smooth temperature and salinity gradients, no significant genetic population structure was found. Rather, our data indicate panmixia and considerable gene flow among regions. The absence of population subdivision driven by environmental factors and over large geographic distances suggests efficient larval dispersal and successful settlement of recruits from a wide range of reef sites. It also advocates, broadcast spawning as the main reproductive strategy of Pocillopora verrucosa in the Red Sea as reflected by the absence of clones in sampled colonies. These factors might explain the success of Pocillopora species throughout the Indo-Pacific and Arabian Seas.
KAUST Department:
Red Sea Research Center (RSRC)
Citation:
Absence of genetic differentiation in the coral Pocillopora verrucosa along environmental gradients of the Saudi Arabian Red Sea 2015, 2 Frontiers in Marine Science
Publisher:
Frontiers Media SA
Journal:
Frontiers in Marine Science
Issue Date:
11-Feb-2015
DOI:
10.3389/fmars.2015.00005
Type:
Article
ISSN:
2296-7745
Additional Links:
http://journal.frontiersin.org/Article/10.3389/fmars.2015.00005/abstract
Appears in Collections:
Articles; Red Sea Research Center (RSRC)

Full metadata record

DC FieldValue Language
dc.contributor.authorRobitzch, Vanessa S.N.en
dc.contributor.authorBanguera Hinestroza, Eulaliaen
dc.contributor.authorSawall, Yvonneen
dc.contributor.authorAl-Sofyani, Abdulmohsinen
dc.contributor.authorVoolstra, Christian R.en
dc.date.accessioned2015-03-15T14:03:10Zen
dc.date.available2015-03-15T14:03:10Zen
dc.date.issued2015-02-11en
dc.identifier.citationAbsence of genetic differentiation in the coral Pocillopora verrucosa along environmental gradients of the Saudi Arabian Red Sea 2015, 2 Frontiers in Marine Scienceen
dc.identifier.issn2296-7745en
dc.identifier.doi10.3389/fmars.2015.00005en
dc.identifier.urihttp://hdl.handle.net/10754/346675en
dc.description.abstractThe Red Sea is the world's northernmost tropical sea. The 2000 km long, but narrow basin creates distinct environmental conditions along its latitudinal spread. The Red Sea displays a pronounced salinity gradient from 41 to 37 PSU (north to south) with an opposing temperature gradient from 21 to 27°C in the north to 27–33.8°C in the south. The Red Sea further displays a decreasing nutrient gradient from south to north that can also influence underwater light fields due to higher phytoplankton content and turbidity. Despite this strong variation in temperature, salinity, nutrients, and light conditions, the Red Sea supports large and diverse coral reef ecosystems along its nearly entire coastline. Only few studies have targeted whether these prevailing gradients affect genetic connectivity of reef organisms in the Red Sea. In this study, we sampled the abundant reef-building coral Pocillopora verrucosa from 10 reefs along a latitudinal gradient in the Red Sea covering an area of more than 850 km. We used nine Pocillopora microsatellite markers to assess the underlying population genetic structure and effective population size. To assure the exclusion of cryptic species, all analyzed specimens were chosen from a single mitochondrial lineage. Despite large distances between sampled regions covering pronounced, but smooth temperature and salinity gradients, no significant genetic population structure was found. Rather, our data indicate panmixia and considerable gene flow among regions. The absence of population subdivision driven by environmental factors and over large geographic distances suggests efficient larval dispersal and successful settlement of recruits from a wide range of reef sites. It also advocates, broadcast spawning as the main reproductive strategy of Pocillopora verrucosa in the Red Sea as reflected by the absence of clones in sampled colonies. These factors might explain the success of Pocillopora species throughout the Indo-Pacific and Arabian Seas.en
dc.publisherFrontiers Media SAen
dc.relation.urlhttp://journal.frontiersin.org/Article/10.3389/fmars.2015.00005/abstracten
dc.rightsThis is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.en
dc.titleAbsence of genetic differentiation in the coral Pocillopora verrucosa along environmental gradients of the Saudi Arabian Red Seaen
dc.typeArticleen
dc.contributor.departmentRed Sea Research Center (RSRC)en
dc.identifier.journalFrontiers in Marine Scienceen
dc.eprint.versionPublisher's Version/PDFen
dc.contributor.institutionHelmholtz Center for Ocean Research, GEOMAR, Kiel, Germanyen
dc.contributor.institutionDepartment of Marine Biology, Faculty of Marine Sciences, King Abdulaziz University, Jeddah, Saudi Arabiaen
dc.contributor.affiliationKing Abdullah University of Science and Technology (KAUST)en
kaust.authorRobitzch, Vanessa S.N.en
kaust.authorBanguera Hinestroza, Eulaliaen
kaust.authorVoolstra, Christian R.en
All Items in KAUST are protected by copyright, with all rights reserved, unless otherwise indicated.