Multiple axes of visual system diversity in Ithomiini, an ecologically diverse tribe of mimetic butterflies DOI Creative Commons
J. Benito Wainwright,

Corin Schofield,

Max Conway

и другие.

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

Structure and functional implications of photoreceptive systems in non-marine ostracods: a review DOI Creative Commons

Elena Bellavere,

Renate Matzke‐Karasz, Donato Romano

и другие.

Hydrobiologia, Год журнала: 2024, Номер 851(17), С. 4051 - 4075

Опубликована: Июнь 12, 2024

Abstract Ostracods are small, bivalved crustaceans living in all types of aquatic habitats. All non-marine species belong to the order Podocopida. They usually possess a simple optical system composed three eyecups called naupliar eye. Phylogenetic data and morphological characteristics support homology eyes between ostracods other crustacean groups. The photoreceptive is formed by several specialised cells can be approximated lens-mirror apparatus. In some cases, transparent area calcitic carapace form an additional lens. visual stimuli processed protocerebrum, possibly via monoaminergic neurons. presence or absence one more influence function eyes, and, most likely, their evolution loss associated with adaptation different Podocopid may express long wavelength-sensitive rhabdomeric opsins nonvisual opsins. few ethological experiments so far conducted demonstrate that might capable associative learning when trained light specific wavelengths. This work will provide overview what known remains further investigated about vision how cues affect behaviour ostracods.

Язык: Английский

Процитировано

0
Multiple axes of visual system diversity in Ithomiini, an ecologically diverse tribe of mimetic butterflies DOI Creative Commons
J. Benito Wainwright,

Corin Schofield,

Max Conway

и другие.

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

Процитировано

0