Copy- cat evolution: Divergence and convergence within and between cat and dog breeds

• 成果类型: Article
• 署名作者: Drake, Abby Grace; Revell, Liam J.; Klingenberg, Christian Peter; Lattimer, Jimmy C.; Nelson, Nathan C.; Schmidt, Martin J.; Zwingenberger, Allison L.; Moyer, Joshua K.; Losos, Jonathan B.
• 署名单位: Cornell University; University of Massachusetts System; University of Massachusetts Boston; University of Manchester; University of Missouri System; University of Missouri Columbia; North Carolina State University; Justus Liebig University Giessen; University of California System; University of California Davis; Yale University; Washington University (WUSTL)
• 刊物名称: PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
• ISSN/ISSBN: 0027-12231
• DOI: 10.1073/pnas.2413780122
• 发表日期: 2025-05-06
• 关键词: shape; skull; hybridization; morphology; diversity; selection; patterns

摘要

Many domesticated species exhibit remarkable phenotypic diversity. In nature, selection produces not only divergence but also convergence when organisms experience similar selective pressures. Whether artificial selection during domestication also produces convergence has received little attention. Three-dimensional shape analysis of domestic cat and dog skulls demonstrated convergence at multiple levels. Most broadly, cats and dogs have both diversified greatly: equaling or exceeding the morphological disparity among all modern-day species of their respective families. Moreover, as a result of artificial selection, some breeds of these two phenotypically distinct species, evolutionarily separated for 50 My, have converged to such an extreme extent that they are more similar to each other than they are to many members of their own species or their ancestors, a phenomenon never previously observed in domesticated species. Remarkably, this convergence evolved not only between dogs and cats but also multiple times within each taxon.