Biological Sunglasses in a Deep-Sea Squid: Pigment Migration in the Retina of Gonatus onyx.
Vision (Basel)
; 8(2)2024 Apr 25.
Article
de En
| MEDLINE
| ID: mdl-38804347
ABSTRACT
The outward migration of ommin pigment granules from the bases to the tips of the photoreceptors in response to light has been reported in the retina of several (mostly coastal) squid species. Following exposure to light and then dark conditions, we collected and processed retinal tissue from juvenile specimens of a deep-sea oegopsid squid, Gonatus onyx. We aimed to determine whether the ommin pigment returns to baseline, and to investigate the presence of glutamate neurotransmitter signaling under both dark and light conditions. We confirmed the presence of ommin granules but observed variability in the return of pigment to the basal layer in dark conditions, as well as changes in glutamate distribution. These findings provide support for the migration of retinal ommin pigment granules as a mechanism for regulating incoming light.
Texte intégral:
1
Collection:
01-internacional
Base de données:
MEDLINE
Langue:
En
Journal:
Vision (Basel)
Année:
2024
Type de document:
Article
Pays d'affiliation:
Nouvelle-Zélande
Pays de publication:
Suisse