Unrepeatable repeatabilities: a common mistake
The correct calculation of repeatability is outlined, a common mistake is pointed out, how the incorrectly calculated value relates to repeatable values is shown, and a method for checking published values and calculating approximate repeatability values from the F ratio is provided.
Preservation of avian blood and tissue samples for DNA analyses
The efficiency of chemical solutions containing high concentrations of salts and detergent at preserving DNA in bird tissue and blood samples stored at ambient temperature for extended periods of time and DNA extracted from samples preserved in these solutions for up to 24 weeks is tested.
THE ORIGIN AND DIVERSIFICATION OF GALAPAGOS MOCKINGBIRDS
- B. Arbogast, S. Drovetski, D. J. Anderson
- Biology, Environmental ScienceEvolution; international journal of organic…
- 1 February 2006
A molecular phylogeny of Galapagos and other mockingbird populations based on mitochondrial sequence data indicated that Nesomimus is nested within the traditional genus Mimus, making the latter paraphyletic, and that the closest living relatives appear to be those currently found in North America, northern South America, and the Caribbean.
Intense Natural Selection in a Population of Darwin's Finches (Geospizinae) in the Gal�pagos
Survival of Darwin's finches through a drought on Daphne Major Island was nonrandom and selection intensities are the highest yet recorded for a vertebrate population.
Ridges and rivers: a test of competing hypotheses of Amazonian diversification using a dart-poison frog (Epipedobates femoralis)
- S. Lougheed, C. Gascon, D. Jones, J. Bogart, P. Boag
- BiologyProceedings of the Royal Society of London…
- 22 September 1999
Mitochondrial DNA cytochrome b sequence data from a dart–poison frog were used to test two hypotheses of Amazonian diversification: the riverine barrier and the ridge hypotheses, and results were consistent with the hypothesis that ancient ridges (arches) have shaped the phylogeographic relationships of Amazonians.
Do female black-capped chickadees prefer high-ranking males as extra-pair partners?
- K. Otter, L. Ratcliffe, Denise Michaud, P. Boag
- BiologyBehavioral Ecology and Sociobiology
- 26 June 1998
High-ranking males had greater realized reproductive success than low- ranking males as a result of extra-pair fertilizations and the implications of female strategies acquiring genetic benefits through extra- Pair copulations are discussed.
Discordant temporal and geographic patterns in maternal lineages of eastern North American frogs, Rana catesbeiana (Ranidae) and Pseudacris crucifer (Hylidae).
Cryptic lineages in a small frog: the post-glacial history of the spring peeper, Pseudacris crucifer (Anura: Hylidae).
Female eavesdropping on male song contests in songbirds.
Eavesdropping on male-male vocal interactions is a means by which females can compare different males' singing behavior directly and make immediate comparisons between them.
Riverine barriers and the geographic distribution of Amazonian species.
- C. Gascon, J. Malcolm, P. Boag
- Environmental ScienceProceedings of the National Academy of Sciences…
- 5 December 2000
Analysis of the phylogeography of frogs and small mammals indicates that a putative riverine barrier (the Juruá River) does not relate to present-day patterns of community similarity and species richness, and implies a significant impact of the Andean orogenic axis and associated thrust-and-fold lowland dynamics in shaping patterns of biotic diversity along the Juruán.