Efficient dispersal and substrate acquisition traits in a marine invasive species via transient chimerism and colony mobility

Over the past three decades the colonial ascidian Didemnum vexillum has been expanding its global range, significantly impacting marine habitats and aquaculture facilities. What biological features make D. vexillum so highly invasive? Here, we show that juxtaposed allogeneic D. vexillum colony fragm...
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Gespeichert in:

Autor*in:	Andrew E. Fidler [verfasserIn] Aurelie Bacq-Labreuil [verfasserIn] Elad Rachmilovitz [verfasserIn] Baruch Rinkevich [verfasserIn]

Format:	E-Artikel
Sprache:	Englisch

Erschienen:	2018

Schlagwörter:	Allorecognition Invasive species Biofouling Immunity Substrate acquisition Bioinvasion

Übergeordnetes Werk:	In: PeerJ - PeerJ Inc., 2013, 6, p e5006(2018)
Übergeordnetes Werk:	volume:6, p e5006 ; year:2018

Links:	Link aufrufen Link aufrufen Link aufrufen Link aufrufen Journal toc

DOI / URN:	10.7717/peerj.5006

Katalog-ID:	DOAJ010822496

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520			\|a Over the past three decades the colonial ascidian Didemnum vexillum has been expanding its global range, significantly impacting marine habitats and aquaculture facilities. What biological features make D. vexillum so highly invasive? Here, we show that juxtaposed allogeneic D. vexillum colony fragments (‘ramets’) may, initially, form chimeric entities. Subsequently, zooids of the differing genotypes within such chimeras coordinately retreat away from fusion zones. A few days following such post-fusion retreat movements there is further ramet fission and the formation of zooid-depauperate tunic zones. Using polymorphic microsatellite loci to distinguish between genotypes, we found that they were sectorial at the fusion zones and the subsequent ramet movements resulted in further spatial separation of the paired-genotypes indicating that the fusion events observed did not lead to formation of long-term, stable chimeras. Thus, movements of D. vexillum colony ramets from initial fusion zones lead to progressive segregation of genotypes probably minimizing potential somatic/germ-cell competition/parasitism. We speculate that relatively fast (≤10 mm/day) movement of D. vexillum colonies on substrates along with frequent, and perhaps unrestrained, transient allogeneic fusions play significant roles in this species’ striking invasiveness and capacity to colonize new substrates.
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callnumber-first	Q - Science
author	Andrew E. Fidler
spellingShingle	Andrew E. Fidler misc QH301-705.5 misc Allorecognition misc Invasive species misc Biofouling misc Immunity misc Substrate acquisition misc Bioinvasion misc Medicine misc R misc Biology (General) Efficient dispersal and substrate acquisition traits in a marine invasive species via transient chimerism and colony mobility
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topic_title	QH301-705.5 Efficient dispersal and substrate acquisition traits in a marine invasive species via transient chimerism and colony mobility Allorecognition Invasive species Biofouling Immunity Substrate acquisition Bioinvasion
topic	misc QH301-705.5 misc Allorecognition misc Invasive species misc Biofouling misc Immunity misc Substrate acquisition misc Bioinvasion misc Medicine misc R misc Biology (General)
topic_unstemmed	misc QH301-705.5 misc Allorecognition misc Invasive species misc Biofouling misc Immunity misc Substrate acquisition misc Bioinvasion misc Medicine misc R misc Biology (General)
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title	Efficient dispersal and substrate acquisition traits in a marine invasive species via transient chimerism and colony mobility
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title_full	Efficient dispersal and substrate acquisition traits in a marine invasive species via transient chimerism and colony mobility
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title_sort	efficient dispersal and substrate acquisition traits in a marine invasive species via transient chimerism and colony mobility
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title_auth	Efficient dispersal and substrate acquisition traits in a marine invasive species via transient chimerism and colony mobility
abstract	Over the past three decades the colonial ascidian Didemnum vexillum has been expanding its global range, significantly impacting marine habitats and aquaculture facilities. What biological features make D. vexillum so highly invasive? Here, we show that juxtaposed allogeneic D. vexillum colony fragments (‘ramets’) may, initially, form chimeric entities. Subsequently, zooids of the differing genotypes within such chimeras coordinately retreat away from fusion zones. A few days following such post-fusion retreat movements there is further ramet fission and the formation of zooid-depauperate tunic zones. Using polymorphic microsatellite loci to distinguish between genotypes, we found that they were sectorial at the fusion zones and the subsequent ramet movements resulted in further spatial separation of the paired-genotypes indicating that the fusion events observed did not lead to formation of long-term, stable chimeras. Thus, movements of D. vexillum colony ramets from initial fusion zones lead to progressive segregation of genotypes probably minimizing potential somatic/germ-cell competition/parasitism. We speculate that relatively fast (≤10 mm/day) movement of D. vexillum colonies on substrates along with frequent, and perhaps unrestrained, transient allogeneic fusions play significant roles in this species’ striking invasiveness and capacity to colonize new substrates.
abstractGer	Over the past three decades the colonial ascidian Didemnum vexillum has been expanding its global range, significantly impacting marine habitats and aquaculture facilities. What biological features make D. vexillum so highly invasive? Here, we show that juxtaposed allogeneic D. vexillum colony fragments (‘ramets’) may, initially, form chimeric entities. Subsequently, zooids of the differing genotypes within such chimeras coordinately retreat away from fusion zones. A few days following such post-fusion retreat movements there is further ramet fission and the formation of zooid-depauperate tunic zones. Using polymorphic microsatellite loci to distinguish between genotypes, we found that they were sectorial at the fusion zones and the subsequent ramet movements resulted in further spatial separation of the paired-genotypes indicating that the fusion events observed did not lead to formation of long-term, stable chimeras. Thus, movements of D. vexillum colony ramets from initial fusion zones lead to progressive segregation of genotypes probably minimizing potential somatic/germ-cell competition/parasitism. We speculate that relatively fast (≤10 mm/day) movement of D. vexillum colonies on substrates along with frequent, and perhaps unrestrained, transient allogeneic fusions play significant roles in this species’ striking invasiveness and capacity to colonize new substrates.
abstract_unstemmed	Over the past three decades the colonial ascidian Didemnum vexillum has been expanding its global range, significantly impacting marine habitats and aquaculture facilities. What biological features make D. vexillum so highly invasive? Here, we show that juxtaposed allogeneic D. vexillum colony fragments (‘ramets’) may, initially, form chimeric entities. Subsequently, zooids of the differing genotypes within such chimeras coordinately retreat away from fusion zones. A few days following such post-fusion retreat movements there is further ramet fission and the formation of zooid-depauperate tunic zones. Using polymorphic microsatellite loci to distinguish between genotypes, we found that they were sectorial at the fusion zones and the subsequent ramet movements resulted in further spatial separation of the paired-genotypes indicating that the fusion events observed did not lead to formation of long-term, stable chimeras. Thus, movements of D. vexillum colony ramets from initial fusion zones lead to progressive segregation of genotypes probably minimizing potential somatic/germ-cell competition/parasitism. We speculate that relatively fast (≤10 mm/day) movement of D. vexillum colonies on substrates along with frequent, and perhaps unrestrained, transient allogeneic fusions play significant roles in this species’ striking invasiveness and capacity to colonize new substrates.
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title_short	Efficient dispersal and substrate acquisition traits in a marine invasive species via transient chimerism and colony mobility
url	https://doi.org/10.7717/peerj.5006 https://doaj.org/article/ad1d616aee714c99b8cb3178277bfbf9 https://peerj.com/articles/5006.pdf https://peerj.com/articles/5006/ https://doaj.org/toc/2167-8359
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Efficient dispersal and substrate acquisition traits in a marine invasive species via transient chimerism and colony mobility

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