Genetic diversity and widespread haplotypes in a migratory dragonfly, the common green darner Anax junius

A - Papers appearing in refereed journals

Freeland, J. R., May, M., Lodge, R. and Conrad, K. F. 2003. Genetic diversity and widespread haplotypes in a migratory dragonfly, the common green darner Anax junius. Ecological Entomology. 28 (4), pp. 413-421. https://doi.org/10.1046/j.1365-2311.2003.00521.x

AuthorsFreeland, J. R., May, M., Lodge, R. and Conrad, K. F.
Abstract

1. Species that undertake regular two-way migration may be expected, through population connectivity, to exhibit some level of genetic similarity over broad spatial scales. Although seldom following two-way migration, highly mobile insect species tend to exhibit either low haplotype diversity and no phylogeographic structuring, or relatively high haplotype diversity and pronounced phylogeographic structuring. 2. This study reveals the first wide-scale genetic characterisation of a migratory dragonfly, the common green darner Anax junius Drury. Unusually for insects, north-south two-way migration is common in this species, although not obligatory. In at least part of its range, some individuals follow an extended developmental period and overwinter in a state of diapause. 3. Mitochondrial sequence data were obtained from 92 A. junius individuals collected from 35 sites across Canada, U.S.A., and Mexico. These revealed 38 haplotypes, some of which were extremely widespread, although the majority (27 haplotypes) was found in only one individual. In contrast to previous studies on mobile insects, the overall pattern was of relatively high haplotype diversity in the absence of phylogeographic structuring. 4. Migrants and non-migrants, which sometimes shared haplotypes, were distributed across multiple genetic lineages. This suggests that, contrary to some earlier assertions, developmental pathways in this species may be plastic. Such plasticity would allow highly mobile species to adapt to a range of environmental conditions, and may be key to the widespread distribution of multiple haplotypes.

KeywordsEntomology
Year of Publication2003
JournalEcological Entomology
Journal citation28 (4), pp. 413-421
Digital Object Identifier (DOI)https://doi.org/10.1046/j.1365-2311.2003.00521.x
Open accessPublished as non-open access
Funder project or code433
510
Project: 4281
PublisherWiley
ISSN0307-6946

Permalink - https://repository.rothamsted.ac.uk/item/890zq/genetic-diversity-and-widespread-haplotypes-in-a-migratory-dragonfly-the-common-green-darner-anax-junius

Restricted files

Publisher's version

Under embargo indefinitely

12 total views
0 total downloads
0 views this month
0 downloads this month