NDLI: Surviving in isolation: genetic variation, bottlenecks and reproductive strategies in the Canarian endemic Limonium macrophyllum (Plumbaginaceae)

Content Provider	Springer Nature Link
Author	Jiménez, Ares Weigelt, Barbara Santos Guerra, Arldo Caujapé Castells, Juli Fernández Palacios, José María Conti, Elena
Copyright Year	2017
Abstract	Oceanic archipelagos are typically rich in endemic taxa, because they offer ideal conditions for diversification and speciation in isolation. One of the most remarkable evolutionary radiations on the Canary Islands comprises the 16 species included in Limonium subsection Nobiles, all of which are subject to diverse threats, and legally protected. Since many of them are single-island endemics limited to one or a few populations, there exists a risk that a loss of genetic variation might limit their long-term survival. In this study, we used eight newly developed microsatellite markers to characterize the levels of genetic variation and inbreeding in L. macrophyllum, a species endemic to the North-east of Tenerife that belongs to Limonium subsection Nobiles. We detected generally low levels of genetic variation over all populations (H T = 0.363), and substantial differentiation among populations (F ST = 0.188; R ST = 0.186) coupled with a negligible degree of inbreeding (F = 0.042). Obligate outcrossing may have maintained L. macrophyllum relatively unaffected by inbreeding despite the species’ limited dispersal ability and the genetic bottlenecks likely caused by a prolonged history of grazing. Although several factors still constitute a risk for the conservation of L. macrophyllum, the lack of inbreeding and the recent positive demographic trends observed in the populations of this species are factors that favour its future persistence.
Starting Page	91
Ending Page	104
Page Count	14
File Format	PDF
ISSN	00166707
Journal	Genetica
Volume Number	145
Issue Number	1
e-ISSN	15736857
Language	English
Publisher	Springer International Publishing
Publisher Date	2017-01-20
Publisher Place	Cham
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Conservation Genetic diversity Islands Macaronesia Microsatellites Sea lavender Animal Genetics and Genomics Plant Genetics & Genomics Evolutionary Biology Human Genetics Microbial Genetics and Genomics
Content Type	Text
Resource Type	Article
Subject	Genetics Plant Science Medicine Animal Science and Zoology Insect Science

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