Appraisal of the consequences of the DDT-induced bottleneck on the level and geographic distribution of neutral genetic variation in Canadian peregrine falcons, Falco peregrinus

BROWN, JOSEPH W.; Groot, Peter J. Van Coeverden de; Birt, Tim P.; Seutin, Gilles; Boag, Peter T.; Friesen, Vicki L.

doi:10.1111/j.1365-294x.2006.03151.x

Cited by 20 publications

(44 citation statements)

References 86 publications

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“…As other studies on endangered and bottlenecked species (e.g., Groombridge et al 2000;Rosenbaum et al 2000;Pertoldi et al 2001;Brown et al 2007), our data prove the importance of museum specimens as a source of genetic information to address questions related to changes in genetic diversity and population structure. Whenever historical samples of endangered populations are available, they provide unique genetic information that cannot be inferred from contemporary samples with the same confidence and reliability.…”

Section: Discussionsupporting

confidence: 62%

“…A direct comparison of these two studies, facilitated by the use of the same microsatellite markers, indicates striking similarities in all indices of DNA diversity between the Canadian and Scandinavian populations, a notion that warrants future investigations. The significant changes in population structure in the North American peregrine populations (Brown et al 2007) may have resulted from gene introgression from the captive populations in Canada and USA. A more extensive sampling of both the historic and contemporary range of the Scandinavian, European, and North American populations would allow for a more complete appraisal of the peregrine bottleneck, which in turn would enable us to fully quantify the genetic effects of the species reintroductions.…”

Section: Discussionmentioning

confidence: 98%

“…Albeit, very little is known about the genetic implications of the admixture of different gene pools and the future adaptive potential for the species. In a comprehensive appraisal of the genetic bottleneck effects on Canadian peregrine falcon populations, Brown et al (2007) recently found that the genetic structure and levels of differentiation between two of the three North American subspecies had changed significantly due to the bottleneck. Similar to the data presented in this study, the levels of allelic diversity and heterozygosity remained unchanged (but low) despite the apparent changes in population structure (Brown et al 2007).…”

Section: Discussionmentioning

confidence: 99%

“…In a comprehensive appraisal of the genetic bottleneck effects on Canadian peregrine falcon populations, Brown et al (2007) recently found that the genetic structure and levels of differentiation between two of the three North American subspecies had changed significantly due to the bottleneck. Similar to the data presented in this study, the levels of allelic diversity and heterozygosity remained unchanged (but low) despite the apparent changes in population structure (Brown et al 2007). A direct comparison of these two studies, facilitated by the use of the same microsatellite markers, indicates striking similarities in all indices of DNA diversity between the Canadian and Scandinavian populations, a notion that warrants future investigations.…”

Section: Discussionmentioning

confidence: 99%

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Significant genetic admixture after reintroduction of peregrine falcon (Falco peregrinus) in Southern Scandinavia

Jacobsen

Nesje²,

Bachmann

et al. 2007

Conserv Genet

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The peregrine falcon (Falco peregrinus) population in southern Scandinavia was almost extinct in the 1970's. A successful reintroduction project was launched in 1974, using captive breeding birds of northern and southern Scandinavian, Finnish and Scottish origin. We examined the genetic structure in the pre-bottleneck population using eleven microsatellite markers and compared the data with the previously genotyped captive breeding population and contemporary wild population. Museum specimens between 53 and 130 years old were analyzed. Despite an apparent loss of historical genetic diversity, the contemporary population shows a relatively high level of genetic variation. Considerable gene introgression from captive breeding stock used to repopulate the former range of southern Scandinavian peregrines may have altered the genetic composition of this population. Both the historical and contemporary northern and southern Scandinavian populations are genetically differentiated. The reintroduction project implemented in the region and the use of nonnative genetic stock likely prevented the southern Scandinavian population from extinction and thus helped maintain the level of genetic diversity and prevent inbreeding depression. The population is rapidly increasing in numbers and range and shows no indication of reduced fitness or adaptive capabilities in the wake of the severe bottleneck and the reintroduction.

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Section: Discussionsupporting

confidence: 62%

Section: Discussionmentioning

confidence: 98%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

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Significant genetic admixture after reintroduction of peregrine falcon (Falco peregrinus) in Southern Scandinavia

Jacobsen

Nesje²,

Bachmann

et al. 2007

Conserv Genet

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“…Increases in population structure due to anthropogenic events have been seen in other species of conservation concern including the Spanish imperial eagle (Aquila adalberti), the Canadian peregrine falcon (Falco peregrinus), the Northeastern beach tiger beetle (Cicindela dorsalis dorsalis) of the United States, and the common hamster (Cricetus cricetus) in the Netherlands (MartinezCruz et al 2007;Brown et al 2007;Goldstein and DeSalle 2003;Smulders et al 2003). In each case, it was concluded that the current spatial structure has no evolutionary significance and that isolated fragments should be managed as a whole.…”

Section: Implications For Conservationmentioning

confidence: 96%

Historic DNA reveals contemporary population structure results from anthropogenic effects, not pre-fragmentation patterns

Tracy

Jamieson

2010

Conserv Genet

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Contemporary patterns of genetic structure among fragmented populations can either result from historic patterns or arise from human-induced fragmentation. Use of historic samples collected prior to fragmentation allows for the origin of genetic structure to be established and appropriate management steps to be determined. In this study, we compare historic and contemporary levels of genetic diversity and structure of an endangered passerine, the New Zealand mohua or yellowhead (Mohoua ochrocephala), using nuclear microsatellites. We found that a significant amount of allelic richness has been lost over the last 100 years. Close to half of this was due to extinction of birds from entire regions, but almost as much was due to loss of genetic diversity within extant populations. We found a pattern of isolation by distance among contemporary populations, which could have resulted from historic structure due to limited gene flow along a latitudinal cline. However, we found that minimal genetic structure existed historically. The pattern of increased structure over time was confirmed by factorial correspondence analysis. We conclude that the genetic structure apparent today resulted from anthropogenic effects of recent fragmentation and isolation. We emphasize the importance of assessing genetic structure of populations prior to their fragmentation, when determining the significance of contemporary patterns. This study highlights the growing importance of museum specimens as a tool in the conservation of threatened and endangered species.

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Falcon genomics in the context of conservation, speciation, and human culture

Wilcox

Boissinot

Idaghdour

2019

Ecology and Evolution

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Here, we review the diversity, evolutionary history, and genomics of falcons in the context of their conservation and interactions with humans, and provide a perspective on how new genomic approaches may be applied to expand our knowledge of these topics. For millennia, humans and falcons (genus Falco) have developed unique relationships through falconry, religious rituals, conservation efforts, and human lifestyle transitions. From an evolutionary perspective, falcons remain an enigma. Having experienced several recent radiations, they have reached an unparalleled and almost global distribution, with an intrageneric species richness that is roughly an order of magnitude higher than typical within their family (Falconidae) and across other birds (Phylum: Aves). This diversity has evolved in the context of unusual genomic architecture that includes unique chromosomal rearrangements, relatively low chromosome counts, extremely low microdeletion rates, and high levels of nuclear mitochondrial DNA segments (NUMTs). These genomic peculiarities combine with high levels of ecological and organismal diversity and a legacy of human interactions to make falcons obvious candidates for evolutionary studies, providing unique research opportunities in common topics, including chromosomal evolution, the mechanics of speciation, local adaptation, domestication, and urban adaptation.

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Appraisal of the consequences of the DDT-induced bottleneck on the level and geographic distribution of neutral genetic variation in Canadian peregrine falcons, Falco peregrinus

Cited by 20 publications

References 86 publications

Significant genetic admixture after reintroduction of peregrine falcon (Falco peregrinus) in Southern Scandinavia

Significant genetic admixture after reintroduction of peregrine falcon (Falco peregrinus) in Southern Scandinavia

Historic DNA reveals contemporary population structure results from anthropogenic effects, not pre-fragmentation patterns

Falcon genomics in the context of conservation, speciation, and human culture

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