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Stable populations in unstable habitats: temporal genetic structure of the introduced ascidian Styela plicata in North Carolina

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dc.contributor Australian Institute Of Marine Science
dc.contributor University Of Barcelona
dc.contributor Csic - Centre D'estudis Avancats De Blanes (ceab)
dc.contributor Univ Miami
dc.contributor Rosenstiel Sch Marine & Atmospher Sci
dc.contributor Dept Anim Biol Invertebrates
dc.contributor Ctr Marine Sci
dc.contributor Ctr Adv Studies Blanes
dc.contributor Ceab
dc.contributor Csic
dc.contributor University Of North Carolina
dc.contributor Dept Biol & Marine Biol
dc.contributor Consejo Superior De Investigaciones Cientificas (csic)
dc.contributor Australian Inst Marine Sci
dc.contributor University Of North Carolina Wilmington
dc.contributor University Of Miami
dc.contributor Univ N Carolina
dc.contributor Univ Barcelona TURON, XAVIER PEREZ-PORTELA, ROCIO LOPEZ-LEGENTIL, SUSANNA CARMEN PINEDA, M. 2017-03-21T01:04:14Z 2016-06-15T00:59:08Z 2016-06-15T00:59:08Z 2019-05-09T01:11:34Z 2017-03-21T01:04:14Z 2016-06-15T00:59:08Z 2016-06-15T00:59:08Z 2019-05-09T01:11:34Z 2016-03-01
dc.identifier.citation Pineda MC, Turon X, Perez-Portela R, Lopez-Legentil S (2016) Stable populations in unstable habitats: temporal genetic structure of the introduced ascidian Styela plicata in North Carolina. Marine Biology 163(3): 59 en_US
dc.identifier.issn 0025-3162
dc.description.abstract The analysis of temporal genetic variability is an essential yet largely neglected tool to unveil and predict the dynamics of introduced species. We here describe the temporal genetic structure and diversity over time of an introduced population of the ascidian Styela plicata (Lesueur, 1823) in Wilmington (North Carolina, USA, 34 08/24"N, 77 5144"W). This population suffers important salinity and temperature changes, and in June every year we observed massive die -offs, leaving free substratum that was recolonized within a month. We sampled 12-14 individuals of S. plicata every 2 months from 2007 to 2009 (N = 196) and analyzed a mitochondrial marker (the gene cytochrome oxidase subunit I, COI) and seven nuclear microsatellites. Population genetic analyses showed similar results for both types of markers and revealed that most of the genetic variation was found within time periods. However, analyses conducted with microsatellite loci also showed weak but significant differences among time periods. Specifically, in the samplings after die-off episodes (August November 2007 and 2008) the genetic diversity increased, the inbreeding coefficient showed prominent drops, and there was a net gain of alleles in the microsatellite loci. Taken together, our results suggest that recruits arriving from neighboring populations quickly occupied the newly available space, bringing new alleles with them. However, other shifts in genetic diversity and allele loss and gain episodes were observed in December January and February March 2008, respectively, and were apparently independent of die-off events. Overall, our results indicate that the investigated population is stable over time and relies on a periodic arrival of larvae from other populations, maintaining high genetic diversity and a complex interplay of allele gains and losses.
dc.description.sponsorship Special thanks are to C. Valero-Jimenez, who designed and optimized the microsatellite primers and collaborated with the genotyping of some samples. This research was supported by a grant from the United States-Israel Binational Science Foundation (BSF), Jerusalem, Israel (number 2014025), the Spanish Government project CTM2013-48163-and the Catalan Government Grant 2014SGR-336 for Consolidated Research Groups.
dc.description.uri en_US
dc.language English
dc.language.iso en en_US
dc.publisher Springer en_US
dc.relation.ispartof Null
dc.subject Sea Squirt
dc.subject Biological Invasions
dc.subject Microsatellite Markers
dc.subject Self-fertilization
dc.subject Species Invasions
dc.subject Marine & Freshwater Biology
dc.subject Botryllus-schlosseri
dc.subject Ciona-intestinalis
dc.subject Larval Development
dc.subject Evolutionary Consequences
dc.subject Marine Invertebrate
dc.title Stable populations in unstable habitats: temporal genetic structure of the introduced ascidian Styela plicata in North Carolina
dc.type journal article en_US
dc.identifier.doi 10.1007/s00227-016-2829-7
dc.identifier.wos WOS:000372302600015

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