Georgy Semenov poster for Evolution 2017.pdf

<p>Both production and evolutionary retention of a precise fit between an organism and its environment are commonly associated with narrowing and canalization of developmental variation. This should, in turn, limit the potential for subsequent adaptations. Yet, organisms are clearly built in such a way as to resolve this tension: intricate adaptations and exceptional diversification routinely coexist in the same traits. A potential resolution of this paradox is when natural selection on a fully grown structure does not modify its developmental elements directly, but instead rearranges and stabilizes them. What evolves under this scenario is a regulatory map that brings together developmental elements. Alternatively, evolution of ontogeny can proceed by accumulating changes in developmental elements themselves, with natural selection accomplishing matching of these changes with locally adaptive configurations. A test of these hypotheses requires direct study of what actually changes when ontogeny of a trait evolves. Recent colonization of Montana by house finches (<i>Haemorhous mexicanus</i>) that was associated with rapid evolution of their beak morphology, provides such opportunity. Here we aim to examine the extent to which extensive population divergence of adult beak morphology corresponded to population divergence in ontogenetic trajectories.</p><div><br></div

Data and Song Files for "Global song divergence in barn swallows (Hirundo rustica): exploring the roles of genetic, geographic, and climatic distance in sympatry and allopatry"

All song files and measurements associated with MR Wilkins, et al. (2018) "Global song divergence in barn swallows (Hirundo rustica): exploring the roles of genetic, geographic, and climatic distance in sympatry and allopatry." Biological Journal of the Linnean Society.<div><br></div><div>Song Recording Descriptions:</div><div>We present 1700 recordings from 19 sites across 6 countries, encompassing 5 of 6 currently described barn swallow subspecies: rustica, erythrogaster, gutturalis, tytleri, and transitiva. We include the downsampled and filtered song files used for analysis in Avisoft. Some of these files have been edited slightly to erase loud sounds in the recordings which threw off measures of peak frequency (see methods). The original, unfiltered 48kHz recordings are also included in a separate ZIP archive.</div><div><br></div><div>Data File Descriptions:</div><div>1) Raw Song Measures_Wilkins et al_BJLS_2018.csv: Song measurements for each song file. Blanks are due to absence of a particular note (e.g. P-note) or inability to measure for a particular song (e.g. due to overlap with another bird).<br></div><div><br></div><div>2) Individual Mean Song Measures_Wilkins et al_BJLS_2018.csv: Average song measures for each individual.</div><div><br></div><div>Abbreviations: </div><div>W.L=Warble Length</div><div>R.L=Rattle Length</div><div>PF.W= Peak Frequency of the Warble</div><div>PF.R= Peak Frequency of the Rattle</div><div>PF.CR= Peak Frequency of the Central Rattle</div><div>W.WE= Warble Weiner Entropy</div><div>CR.FB= Central Rattle Frequency Bandwidth</div><div>R.Tempo= Rattle Tempo</div><div>Zcount= count of omega syllables</div><div>Zprop= proportion of omega syllables</div><div><br></div><div>See main text for description of how these were measured.</div><div><br></div><div><br></div><div><br></div