Species Identification in the White-headed Gull Complex Completed
The Challenge: The Federal Aviation Administration has long relied on the expertise provided by the Smithsonian Feather Identification Lab for identification of bird remains recovered from bird-aircraft (birdstrike) collisions. Recently, these identifications are increasingly reliant on data from mitochondrial DNA. While generally successful in delimiting species, mitochondrial DNA is not sufficiently differentiated in certain groups of birds, such as the white-headed gull complex of species, for successful identification. Unfortunately, these gulls (e.g., Herring Gull, Western Gull, Glaucous Gull) are among the main culprits in damaging strikes to aircraft, accounting for about 25% of birdstrikes to civil aircraft.
The Science: Accurately identifying the species of gulls involved in birdstrikes is a critical first step to designing and implementing measures to help prevent damaging strikes. The Federal Aviation Administration has long relied on the expertise provided by the Smithsonian Feather Identification Lab for identification of bird remains recovered from bird-aircraft (birdstrike) collisions. In a collaboration between the USGS and the Smithsonian, a multi-locus database is being developed to enable DNA identification of white-headed gull species involved in birdstrikes, to increase our scientific understanding of the complex relationships within this group of birds, and, more generally, to provide insight into the genetics of recently diverged or hybridizing species like the species complex of white headed gulls.
The Future: A multi-locus database for 18 species of gull, consisting of data from nuclear DNA sequences and microsatellites in addition to mitochondrial sequence data, is now proving successful in identifying species not previously identifiable by genetic data from mitochondrial DNA alone. This in turn will allow the development of species-specific plans for reducing the incidence of birdstrikes. In addition, these data are providing new insight into the speciation and diversification of these gulls during the climatic fluctuations of the Pleistocene epoch.
Below are publications associated with this project.
Recurrent hybridization and recent origin obscure phylogenetic relationships within the ‘white-headed’ gull (Larus sp.) complex
Hybridization among Arctic white-headed gulls (Larus spp.) obscures the genetic legacy of the Pleistocene
Below are partners associated with this project.
- Overview
The Challenge: The Federal Aviation Administration has long relied on the expertise provided by the Smithsonian Feather Identification Lab for identification of bird remains recovered from bird-aircraft (birdstrike) collisions. Recently, these identifications are increasingly reliant on data from mitochondrial DNA. While generally successful in delimiting species, mitochondrial DNA is not sufficiently differentiated in certain groups of birds, such as the white-headed gull complex of species, for successful identification. Unfortunately, these gulls (e.g., Herring Gull, Western Gull, Glaucous Gull) are among the main culprits in damaging strikes to aircraft, accounting for about 25% of birdstrikes to civil aircraft.
The Science: Accurately identifying the species of gulls involved in birdstrikes is a critical first step to designing and implementing measures to help prevent damaging strikes. The Federal Aviation Administration has long relied on the expertise provided by the Smithsonian Feather Identification Lab for identification of bird remains recovered from bird-aircraft (birdstrike) collisions. In a collaboration between the USGS and the Smithsonian, a multi-locus database is being developed to enable DNA identification of white-headed gull species involved in birdstrikes, to increase our scientific understanding of the complex relationships within this group of birds, and, more generally, to provide insight into the genetics of recently diverged or hybridizing species like the species complex of white headed gulls.
The Future: A multi-locus database for 18 species of gull, consisting of data from nuclear DNA sequences and microsatellites in addition to mitochondrial sequence data, is now proving successful in identifying species not previously identifiable by genetic data from mitochondrial DNA alone. This in turn will allow the development of species-specific plans for reducing the incidence of birdstrikes. In addition, these data are providing new insight into the speciation and diversification of these gulls during the climatic fluctuations of the Pleistocene epoch.
- Publications
Below are publications associated with this project.
Recurrent hybridization and recent origin obscure phylogenetic relationships within the ‘white-headed’ gull (Larus sp.) complex
Species complexes that have undergone recent radiations are often characterized by extensive allele sharing due to recent ancestry and (or) introgressive hybridization. This can result in discordant evolutionary histories of genes and heterogeneous genomes, making delineating species limits difficult. Here we examine the phylogenetic relationships among a complex group of birds, the white-headed gAuthorsSarah A. Sonsthagen, Robert E. Wilson, Terry Chesser, Jean-Marc Pons, Pierre-Andre Crochet, Amy Driscoll, Carla DoveHybridization among Arctic white-headed gulls (Larus spp.) obscures the genetic legacy of the Pleistocene
We studied the influence of glacial oscillations on the genetic structure of seven species of white-headed gull that breed at high latitudes (Larus argentatus, L. canus, L. glaucescens, L. glaucoides, L. hyperboreus, L. schistisagus, and L. thayeri). We evaluated localities hypothesized as ice-free areas or glacial refugia in other Arctic vertebrates using molecular data from 11 microsatellite locAuthorsSarah A. Sonsthagen, R. Terry Chesser, Douglas A. Bell, Carla J. Dove - Partners
Below are partners associated with this project.