Zoeken
Zoeken kan via de modus 'eenvoudig zoeken' (één veld) of uitgebreid via 'geavanceerd zoeken' (meerdere velden). Zo kan je bv. zoeken op een combinatie van een auteursnaam (auteur), een jaartal (jaar) en een documenttype.
Boekenmand
Nuttige resultaten kan je aanvinken en toevoegen aan een mandje. De inhoud hiervan kan je exporteren of afdrukken (naar bv. PDF).
RSS
Op de hoogte blijven van nieuw toegevoegde publicaties binnen uw interessegebied? Dit kan door een RSS-feed (?) te maken van jouw zoekopdracht.
nieuwe zoekopdracht
A critical deliberation of the ‘species complex’ status of the globally spread colonial ascidian Botryllus schlosseri
Reem, E.; Douek, J.; Rinkevich, B. (2021). A critical deliberation of the ‘species complex’ status of the globally spread colonial ascidian Botryllus schlosseri. J. Mar. Biol. Ass. U.K. 101(7): 1047-1060. https://dx.doi.org/10.1017/s0025315422000029
In: Journal of the Marine Biological Association of the United Kingdom. Cambridge University Press/Marine Biological Association of the United Kingdom: Cambridge. ISSN 0025-3154; e-ISSN 1469-7769
|   |
| Trefwoorden |
ASSEMBLEPlus Transnational Access
Scientific Publication
Marien/Kust |
| Author keywords |
Allorecognition assays; barcoding gap; genetic markers; network theory; phylogenetic analysis; species delineation; taxonomy |
| Auteurs | | Top |
- Reem, E.
- Douek, J.
- Rinkevich, B.
|
|
|
| Abstract |
The accurate taxonomic identity for the worldwide-distributed invasive ascidian Botryllus schlosseri has not been resolved. Employing molecular tools, primarily mtDNA, previous studies unveiled five divergent clades (A–E), suggesting a complex of five cryptic species. A recent study allocated clades A and E to different species. Here, worldwide B. schlosseri's COI distribution map has been drawn, based on 2927 specimens, elucidating 160 haplotypes (100 singletons). Clade A emerged as the most abundant and globally widespread, while other clades had more limited distributions (primarily B, C). Inter-clade and intra-clade divergences were similar, with no clear barcoding gaps between the clades, illuminating no more than two putative OTUs. Network analyses for the genetic similarities among the clades' haplotypes identified different groups, depending on threshold values and away from the suggested clades' boundaries. Three additional genetic markers (H3, 18S, 28S) disclosed clade A, segregating from other clades and clades D and E strongly integrating. Allorecognition assays between clades resulted in indifference and rejection outcomes, characteristics of the within-species allorecognition repertoire. The question as to whether Botryllus schlosseri is a single species or a species complex is further discussed, leading to the assertion that while it is a widely variable species, there is not enough evidence for its designation as a species complex. |
IMIS is ontwikkeld en wordt gehost door het VLIZ.
