Repeated eye reduction events reveal multiple pathways to degeneration in a family of marine snails
Eye reduction occurs in many troglobitic, fossorial, and deep-sea animals but there is no clear consensus on its evolutionary mechanism. Given the highly conserved and pleiotropic nature of many genes instrumental to eye development, degeneration might be expected to follow consistent evolutionary trajectories in closely related animals. We tested this in a comparative study of ocular anatomy in solariellid snails from deep and shallow marine habitats using morphological, histological, and tomographic techniques, contextualized phylogenetically. Of 67 species studied, 15 lack retinal pigmentation and at least seven have eyes enveloped by surrounding epithelium.
- Nenhuma restrição
- Biodiversidade Marinha
- Artigo com revisão pelos pares e teses universitárias
- Identificação, Monitoria, Indicadores e Avaliações
- Nenhuma / Não aplicável