Eur. J. Entomol. 106 (2): 179-184, 2009 | DOI: 10.14411/eje.2009.021
Population structure and speciation in the dragonfly Sympetrum striolatum/nigrescens (Odonata: Libellulidae): An analysis using AFLP markers
- 1 British Dragonfly Society, c/o Natural England (West Midlands), Attingham Park, Shrewsbury, Shropshire, SY4 4TW, UK
- 2 Department of Zoology, University of Cambridge, Downing Street, Cambridge, CB2 3EJ, UK
- 3 Retired
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.
Keywords: Gene flow, STRUCTURE, morphotypes, dragonfly, Odonata, Sympetrum striolatum/nigrescens
Received: March 13, 2009; Accepted: March 31, 2009; Published: May 20, 2009
- AJMONE-MARSAN P., VALENTINI A., CASSANDRO M., VECCHIOTTIANTALDI G., BERTONI G. & KUIPER M. 1997: AFLP markers for DNA fingerprinting in cattle. Anim. Genet. 28: 418-426 Go to original source...
- BROOKS S. 2002: Field Guide to the Dragonflies and Damselflies of Great Britain and Ireland. British Wildlife Publishing, Gillingham, 160 pp
- DASMAHAPATRA K.K., HOFFMAN J.I. & AMOS W. 2009: Pinniped phylogenetic relationships inferred using AFLP markers. Heredity. Doi: 10.1038/hdy.2009.25 Go to original source...
- FALUSH D., STEPHENS M. & PRITCHARD J.K. 2003: Inference of population structure using multilocus genotype data: linked loci and correlated allele frequencies. Genetics 164: 1567-1587
- GARDNER A.E. 1955: A study of the genitalia of the two species Sympetrum nigrescens Lucas and S. nigrifemur (Selys) with notes on their distribution (Odonata: Libellulidae). Entomol. Gaz. 6: 86-108.
- HAMMOND C.O. & MERRITT R. 1985: The Dragonflies of Great Britain and Ireland. Harley Books, Colchester, 116 pp
- MERRITT R. & VICK G.S. 1983: Is Sympetrum nigrescens Lucas a good species? J. Brit. Dragonfly Soc. 1: 7-8
- MERRITT R., MOORE N.W. & EVERSHAM B.C. 1996: Atlas of Dragonflies of Britain and Ireland. The Stationery Office, Norwich, 151 pp
- PILGRIM E.M. & VON DOHLEN C.D. 2007: Molecular and morphological study of species-level questions within the dragonfly genus Sympetrum (Odonata: Lebellulidae). Ann. Entomol. Soc. Am. 100: 688-702 Go to original source...
- PRITCHARD J.K., STEPHENS M. & DONNELLY P. 2000: Inference of population structure using multilocus genotype data. Genetics 155: 945-959
- VON HELVERSEN O., HELLER K.G., MAYER F., NEMETH A., VOLLETH M. & GOMBKOTO P. 2001: Cryptic mammalian species: a new species of whiskered bat (Myotis alcathoe n. sp.) in Europe. Naturwissenschassen 88: 217-223 Go to original source...
- VOS P., HOGERS R., BLEEKER M., REIJANS M., VANDELEE T., HORNES M., FRIJTERS A., POT J., PELEMAN J., KUIPER M. & ZABLEAU M. 1995: AFLP: a new technique for DNA fingerprinting. Nucl. Acids Res. 23: 4407-4414 Go to original source...