Academic Journal
A morphological basis for path-dependent evolution of visual systems
| العنوان: | A morphological basis for path-dependent evolution of visual systems |
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| المؤلفون: | Varney, Rebecca M., Speiser, Daniel I., Cannon, Johanna T., Aguilar, Morris A., Eernisse, Douglas J., Oakley, Todd H. |
| المصدر: | Science ; volume 383, issue 6686, page 983-987 ; ISSN 0036-8075 1095-9203 |
| بيانات النشر: | American Association for the Advancement of Science (AAAS) |
| سنة النشر: | 2024 |
| الوصف: | Path dependence influences macroevolutionary predictability by constraining potential outcomes after critical evolutionary junctions. Although it has been demonstrated in laboratory experiments, path dependence is difficult to demonstrate in natural systems because of a lack of independent replicates. Here, we show that two types of distributed visual systems recently evolved twice within chitons, demonstrating rapid and path-dependent evolution of a complex trait. The type of visual system that a chiton lineage can evolve is constrained by the number of openings for sensory nerves in its shell plates. Lineages with more openings evolve visual systems with thousands of eyespots, whereas those with fewer openings evolve visual systems with hundreds of shell eyes. These macroevolutionary outcomes shaped by path dependence are both deterministic and stochastic because possibilities are restricted yet not entirely predictable. |
| نوع الوثيقة: | article in journal/newspaper |
| اللغة: | English |
| DOI: | 10.1126/science.adg2689 |
| الاتاحة: | http://dx.doi.org/10.1126/science.adg2689 https://www.science.org/doi/pdf/10.1126/science.adg2689 |
| رقم الانضمام: | edsbas.7DB17B8E |
| قاعدة البيانات: | BASE |
| DOI: | 10.1126/science.adg2689 |
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