Trends Ecol Evol. Price TD, Khan R. Evolution of Visual Processing in the Human Retina. Chromosomal inversion differences correlate with range overlap in passerine birds.
Nat Ecol Evol. Price TD. Sensory Drive, Color, and Color Vision. Historical limits on species co-occurrence determine variation in clade richness among New World passerine birds. Journal of Biogeography. Unifying latitudinal gradients in range size and richness across marine and terrestrial systems. Early diversification of sperm size in the evolutionary history of the old world leaf warblers Phylloscopidae.
J Evol Biol. Lapiedra O, Price TD. Revisiting Fisher: range size drives the correlation between variability and abundance of British bird eggs. Evolutionary dynamics of Rh2 opsins in birds demonstrate an episode of accelerated evolution in the New World warblers Setophaga.
Rates of karyotypic evolution in Estrildid finches differ between island and continental clades. Sexual Stimulation and Sexual Selection. Price T. The debate on determinants of species richness.
SWS2 visual pigment evolution as a test of historically contingent patterns of plumage color evolution in warblers.
Singh P Price TD. Causes of the latitudinal gradient in birdsong complexity assessed from geographical variation within two Himalayan warbler species. J Hered. Hormonal, behavioral, and life-history traits exhibit correlated shifts in relation to population establishment in a novel environment.
Genomic divergence in a ring species complex. Niche filling slows the diversification of Himalayan songbirds. Harr B, Price T. Climate change: a hybrid zone moves north. Curr Biol. Discovery of a relict lineage and monotypic family of passerine birds.
Biol Lett. Rates of signal evolution are associated with the nature of interspecific communication. Behavioral Ecology. Into and out of the tropics: the generation of the latitudinal gradient among New World passerine birds. A test for community saturation along the Himalayan bird diversity gradient, based on within-species geographical variation.
J Anim Ecol. A complete multilocus species phylogeny of the tits and chickadees Aves: Paridae. Mol Phylogenet Evol. Learning and signal copying facilitate communication among bird species. Evolution of displays within the pair bond. Exploitation in northeast India. Speciation: clash of the genomes. Eaglenest wildlife sanctuary: pressures on biodiversity E. Wilson award address. Ecological limits on diversification of the Himalayan core Corvoidea. Population regulation and character displacement in a seasonal environment.
Anim Behav. PMID: Competition with insectivorous ants as a contributor to low songbird diversity at low elevations in the eastern Himalaya. Ecol Evol. Am Nat. Song playbacks demonstrate slower evolution of song discrimination in birds from Amazonia than from temperate North America. PLoS Biol. Evolution of sexual cooperation from sexual conflict. Common latitudinal gradients in functional richness and functional evenness across marine and terrestrial systems. Proc Biol Sci. The positive effects of early breeding, plus the across-year correlation between parent and offspring cohorts, predict that warmer climates should lead to increases in trait size.
However, trait size has not increased over the past 25 years, even though mean breeding date has advanced. We show that whereas warm springs have positive effects on trait size, warm summers have negative effects due to increased feather wear. Apparent stasis in the size of a sexually selected trait thus masks large, conflicting influences of climate change. Continued climate warming has the potential to affect the honesty of sexual signals, as trait expression and condition become increasingly disassociated.
Sexual imprinting, learning and speciation more. Publication Date: Annual variation in fat storage by a migrant warbler overwintering in the Indian tropics more. Pervasive reinforcement and the role of sexual selection in biological speciation more. Sexual selection has been widely implicated as a driver of speciation. However, allopatric forms are often defined as species based on divergence in sexually selected traits and it is unclear how much such trait differences affect However, allopatric forms are often defined as species based on divergence in sexually selected traits and it is unclear how much such trait differences affect reproductive isolation upon secondary contact, the defining feature of biological species.
We show that in birds, divergence in song and plumage in allopatry corresponds poorly with whether species mate assortatively in hybrid zones and argue that this is because many other factors besides trait divergence affect propensity to hybridize, including rarity of conspecific mates and choice based on territory rather than male traits.
We then present a general model for the establishment of sympatry that assumes a period of differentiation in allopatry followed by secondary contact and often hybridization, with hybridization subsequently reduced by reinforcement of mate preferences.
Reduced territorial responses in dark-eyed juncos following population establishment in a climatically mild environment more. Animal Behaviour and Biological Sciences. The role of phenotypic plasticity in driving genetic more. Models of population divergence and speciation are often based on the assumption that differences between populations are due to genetic factors, and that phenotypic change is due to natural selection.
It is equally plausible that some of It is equally plausible that some of the differences among populations are due to phenotypic plasticity. We use the metaphor of the adaptive landscape to review the role of phenotypic. Genetic and morphological evolution following a founder event in the dark-eyed junco, Junco hyemalis thurberi more. An isolated population of dark-eyed juncos, Junco hyemalis, became established on the campus of the University of California at San Diego UCSD , probably in the early s.
It now numbers about 70 breeding pairs. Populations across the Populations across the entire natural range of the subspecies J. The UCSD population is significantly different from these populations, the closest of which is 70 km away.
Results suggest a moderate bottleneck in the early establishment phase but with more than seven effective founders. Individuals in the UCSD population have shorter wings and tails than those in the nearby mountains and a common garden experiment indicates that the morphological differences are genetically based.
The moderate effective population size is not sufficient for the observed morphological differences to have evolved as a consequence of genetic drift, indicating a major role for selection subsequent to the founding of the UCSD population. Genomic divergence in a ring species complex more. Ring species provide particularly clear demonstrations of how one species can gradually evolve into two, but are rare in nature.
In the greenish warbler Phylloscopus trochiloides species complex, a ring of populations wraps around In the greenish warbler Phylloscopus trochiloides species complex, a ring of populations wraps around Tibet. Two reproductively isolated forms co-exist in central Siberia, with a gradient of genetic and phenotypic characteristics through the southern chain of populations connecting them.
Previous genetic evidence has proven inconclusive, however, regarding whether species divergence took place in the face of continuous gene flow and whether hybridization between the terminal forms of the ring ever occurred. Here we use genome-wide analyses to show that, although spatial patterns of genetic variation are currently mostly as expected of a ring species, historical breaks in gene flow have existed at more than one location around the ring, and the two Siberian forms have occasionally interbred.
Substantial periods of geographical isolation occurred not only in the north but also in the western Himalayas, where there is now an extensive hybrid zone between genetically divergent forms.
Limited asymmetric introgression has occurred directly between the Siberian forms, although it has not caused a blending of those forms, suggesting selection against introgressed genes in the novel genetic background. Levels of reproductive isolation and genetic introgression are consistent with levels of phenotypic divergence around the ring, with phenotypic similarity and extensive interbreeding across the southwestern contact zone and strong phenotypic divergence and nearly complete reproductive isolation across the northern contact zone.
These results cast doubt on the hypothesis that the greenish warbler should be viewed as a rare example of speciation by distance, but demonstrate that the greenish warbler displays a continuum from slightly divergent neighbouring populations to almost fully reproductively isolated species. Publication Date: Publication Name: Nature.
Ring species as bridges between microevolution and speciation more. Publication Date: Publication Name: Genetica. Marine tethysuchian crocodyliform from the? Appreciation to Reviewers for Psychosomatics more.
Evolution of correlated characters more. Biological Sciences and Environmental Sciences. Page 1.
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