Population structure and speciation in the dragonfly Sympetrum striolatum/nigrescens (Odonata: Libellulidae): An analysis using AFLP markers

Title:

Population structure and speciation in the dragonfly Sympetrum striolatum/nigrescens (Odonata: Libellulidae): An analysis using AFLP markers

Creator:

Parkes, Katherine A., Amos, William, Moore, Norman W., Hoffman, Joseph I. , and Moore, Janet

Identifier:

https://cdk.lib.cas.cz/client/handle/uuid:f328f468-9f0a-459f-a394-f40b7ff72ab9
uuid:f328f468-9f0a-459f-a394-f40b7ff72ab9

Subject:

Gene flow, STRUCTURE, morphotypes, dragonfly, Odonata, and Sympetrum striolatum/nigrescens

Type:

article, model:article, and TEXT

Description:

There has been a long-standing debate as to whether Sympetrum striolatum (Charpentier, 1840) and the darker northern form, S. nigrescens (Lucas, 1912) should be recognised as separate species of dragonfly. Here we address this question using genetic analysis based on AFLP markers and samples collected from sites across the species' United Kingdom range. The program STRUCTURE finds no support for specific status. Instead, it reveals strong patterns of divergence between populations sampled from Scottish islands and those on the mainland, suggesting that salt water is a major barrier to gene flow. Thus, the dark form is quite likely to reflect a beneficial polymorphism that allows individuals to take advantage of short periods of warmer weather. Our AFLP markers appear to be very rapidly evolving, showing little or no overlap between congeneric species, and hence are ideally suited to answering questions relating to the levels of gene flow among populations within species.

Language:

English

Rights:

http://creativecommons.org/publicdomain/mark/1.0/
policy:public

Source:

European Journal of Entomology | 2009 Volume:106 | Number:2

Harvested from:

CDK

Metadata only:

false