
bioRxiv (Cold Spring Harbor Laboratory), Год журнала: 2023, Номер unknown
Опубликована: Июль 19, 2023
Abstract The striking structural variation seen in arthropod visual systems can be explained by the overall quantity and spatio-temporal structure of light within habitats coupled with developmental physiological constraints. However, little is currently known about how fine-scale structures arise across shorter evolutionary ecological scales. In this study, we characterise patterns interspecific (between species), intraspecific sexes) intraindividual eye regions) system four ithomiine butterfly species. These species are part a diverse 26-Myr-old Neotropical radiation where changes mimetic colouration associated shifts ecology, such as microhabitat preference. By using combination selection analyses on opsin sequences, in-vivo ophthalmoscopy, micro-computed tomography (micro-CT), immunohistochemistry, confocal microscopy, neural tracing, quantify describe physiological, anatomical, molecular traits involved processing. Using these data, provide evidence substantial Ithomiini, including: i) relaxed opsins, perhaps mediated habitat preference, ii) physiology anatomy, iii) extensive sexual dimorphism, including complete absence butterfly-specific optic neuropil males some We conclude that considerable exist insect radiations, hinting at lability to rapidly develop specialisations distinct ecologies, acting both perceptual, processing, level. Summary statement Physiological, radiation, evolve environments.
Язык: Английский