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| DOI | 10.1126/science.aba0803 |
| A genetic mechanism for sexual dichromatism in birds | |
| Gazda M.A.; Araújo P.M.; Lopes R.J.; Toomey M.B.; Andrade P.; Afonso S.; Marques C.; Nunes L.; Pereira P.; Trigo S.; Hill G.E.; Corbo J.C.; Carneiro M. | |
| 发表日期 | 2020 |
| ISSN | 0036-8075 |
| 起始页码 | 1270 |
| 结束页码 | 1274 |
| 卷号 | 368期号:6496 |
| 英文摘要 | Sexual dichromatism, a difference in coloration between males and females, may be due to sexual selection for ornamentation and mate choice. Here, we show that carotenoid-based dichromatism in mosaic canaries, a hybrid phenotype that arises in offspring of the sexually dichromatic red siskin and monochromatic canaries, is controlled by the gene that encodes the carotenoid-cleaving enzyme b-carotene oxygenase 2 (BCO2). Dichromatism in mosaic canaries is explained by differential carotenoid degradation in the integument, rather than sex-specific variation in physiological functions such as pigment uptake or transport. Transcriptome analyses suggest that carotenoid degradation in the integument might be a common mechanism contributing to sexual dichromatism across finches. These results suggest that differences in ornamental coloration between sexes can evolve through simple molecular mechanisms controlled by genes of major effect. © 2020 The Authors, some rights reserved; exclusive licensee American Association for the Advancement of Science. No claim to original U.S. Government Works |
| 关键词 | carotenoidcolor morphenzyme activitygenetic analysishybridmolecular analysisornamentationphenotypephysiological responsesexual dimorphismsexual selectionAvesCarduelis cucullataFringillidaecarotenoiddioxygenasetranscriptomeanatomy and histologyanimalevolutionfemalefinchgeneticsmalemetabolismphysiologypigmentationSerinussex factorsexual characteristicsAnimalsBiological EvolutionCanariesCarotenoidsDioxygenasesFemaleFinchesMalePigmentationSex CharacteristicsSex FactorsTranscriptome |
| 语种 | 英语 |
| 来源机构 | Science |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://gcip.llas.ac.cn/handle/2XKMVOVA/133431 |
| 推荐引用方式 GB/T 7714 | Gazda M.A.,Araújo P.M.,Lopes R.J.,et al. A genetic mechanism for sexual dichromatism in birds[J]. Science,2020,368(6496). |
| APA | Gazda M.A..,Araújo P.M..,Lopes R.J..,Toomey M.B..,Andrade P..,...&Carneiro M..(2020).A genetic mechanism for sexual dichromatism in birds.,368(6496). |
| MLA | Gazda M.A.,et al."A genetic mechanism for sexual dichromatism in birds".368.6496(2020). |
| 条目包含的文件 | 条目无相关文件。 | |||||
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