| Full text | |
| Author(s): |
Total Authors: 4
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| Affiliation: | [1] Univ Sao Paulo, FFCLRP, Dept Biol, BR-14040900 Sao Paulo - Brazil
[2] Univ Fed Rio de Janeiro, Ctr Nacl Biol Estrutural & Bioimagens, BR-21941902 Rio De Janeiro - Brazil
Total Affiliations: 2
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| Document type: | Journal article |
| Source: | Evolution; v. 75, n. 5 APR 2021. |
| Web of Science Citations: | 0 |
| Abstract | |
The establishment of a given phenotype is only one expression from a range of hidden developmental possibilities. Developmental plasticity at hidden reaction norms might elicit phenotypic diversification under new developmental environments. Current discussion benefits from empirical analyses that integrate multiple environmental stimuli to evaluate how plastic responses may shape phenotypic variation. We raised Megaleporinus macrocephalus fish in different environmental settings to address contributions of developmental plasticity for emergence of new phenotypes and subsequent morphospace diversification. Plastic morphotypes were evaluated at two complementary scales, the M. macrocephalus morphospace and the higher taxonomic level of Anostomidae family. Morphospace analyses demonstrated that developmental plasticity quickly releases distinct head morphotypes that were hidden in the parental monomorphic population. Plastic morphotypes occupied discrete and previously unfilled morphospace regions, a result obtained from comparisons with a control population and in analyses including several Anostomidae species. Plastic responses involved adjustments in shape and relative position of head bonesets, and fish raised under specific environmental combinations rescued phenotypic patterns described for different genera. Therefore, developmental plasticity possibly contributes to adaptive radiation in Anostomidae. Results illustrate how plastic responses enable morphospace diversification and contribute to evolution. (AU) | |
| FAPESP's process: | 15/07650-6 - Ecology, evolution and development (Eco-Evo-Devo) in the Brazilian herpetofauna |
| Grantee: | Tiana Kohlsdorf |
| Support Opportunities: | Research Projects - Thematic Grants |