{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,1,16]],"date-time":"2026-01-16T08:39:31Z","timestamp":1768552771409,"version":"3.49.0"},"reference-count":73,"publisher":"Oxford University Press (OUP)","issue":"1","license":[{"start":{"date-parts":[[2025,8,6]],"date-time":"2025-08-06T00:00:00Z","timestamp":1754438400000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"Australian Government Research Training Program"},{"name":"Australian National University Higher Degree by Research (HDR) program"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":[],"published-print":{"date-parts":[[2026,1,15]]},"abstract":"<jats:title>Abstract<\/jats:title>\n                  <jats:p>Gene tree discordance along a set of aligned genomes presents a challenge for phylogenomic methods to identify the non-recombining regions and reconstruct the phylogenetic tree for each region. To address this problem, many studies used the non-overlapping window approach, often with an arbitrary selection of fixed window sizes that potentially include intra-window recombination events. In this study, we propose an information theoretic approach to select a window size that best reflects the underlying histories of the alignment. First, we simulated chromosome alignments that reflected the key characteristics of an empirical data set and found that the Akaike information criterion (AIC) is a good predictor of window size accuracy in correctly recovering the tree topologies of the alignment. To address the issue of missing data in empirical data sets, we designed a stepwise non-overlapping window approach that compares the AIC of two window sizes at a time, retaining only genomic regions that can be analyzed using both window sizes. We then applied this method to the genomes of Heliconius butterflies and great apes. We found that the best window sizes for the butterflies\u2019 chromosomes ranged from\u00a0\u2264125 to 250 bp, which are much shorter than those used in a previous study even though this difference in window size did not significantly change the most common topologies across the genome. On the other hand, the best window sizes for great apes\u2019 chromosomes ranged from 500 bp to 1 kb with the proportion of the major topology (grouping human and chimpanzee) falling between 60% and 87%, consistent with previous findings. Additionally, we observed a notable impact of gene tree estimation error and concatenation when using small and large windows, respectively. For instance, the proportion of the major topology for great apes was 50% when using 250 bp windows, but reached almost 100% for 64 kb windows. In conclusion, our study highlights the challenges associated with selecting a fixed window size in non-overlapping window analyses and proposes the AIC as a less arbitrary way to select the optimal window size when running the non-overlapping window method on whole genome alignments.<\/jats:p>","DOI":"10.1093\/sysbio\/syaf053","type":"journal-article","created":{"date-parts":[[2025,8,5]],"date-time":"2025-08-05T11:35:01Z","timestamp":1754393701000},"page":"100-114","source":"Crossref","is-referenced-by-count":1,"title":["Selecting a Window Size for Phylogenomic Analyses of Whole Genome Alignments Using AIC"],"prefix":"10.1093","volume":"75","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-4599-0207","authenticated-orcid":false,"given":"Jeremias","family":"Ivan","sequence":"first","affiliation":[{"name":"Australian National University Research School of Biology, , Canberra, ACT 2601 ,","place":["Australia"]}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-4801-7579","authenticated-orcid":false,"given":"Paul","family":"Frandsen","sequence":"additional","affiliation":[{"name":"Brigham Young University Department of Plant and Wildlife Sciences, , Provo, UT 846002 ,","place":["USA"]}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-1140-2596","authenticated-orcid":false,"given":"Robert","family":"Lanfear","sequence":"additional","affiliation":[{"name":"Australian National University Research School of Biology, , Canberra, ACT 2601 ,","place":["Australia"]}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"286","published-online":{"date-parts":[[2025,8,6]]},"reference":[{"issue":"6","key":"2026011509264609900_bib1","doi-asserted-by":"crossref","first-page":"716","DOI":"10.1109\/TAC.1974.1100705","article-title":"A new look at the statistical model identification","volume":"19","author":"Akaike","year":"1974","journal-title":"IEEE Trans. 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