Putative photosensitivity in internal light organs (organs of Pesta) of deep-sea sergestid shrimps.

ABSTRACT: Many marine species can regulate the intensity of bioluminescence from their ventral photophores in order to counterilluminate, a camouflage technique whereby animals closely match the intensity of the downwelling illumination blocked by their bodies, thereby hiding their silhouettes. Recent studies on autogenic cuticular photophores in deep-sea shrimps indicate that the photophores themselves are light sensitive. Here, our results suggest photosensitivity in a second type of autogenic photophore, the internal organs of Pesta, found in deep-sea sergestid shrimps. Experiments were conducted onboard ship on live specimens, exposing the animals to bright light, which resulted in ultrastructural changes that matched those seen in crustacean eyes during the photoreceptor membrane turnover, a pr

SUBMITTER: Frank T 

PROVIDER: S-EPMC10522685 | biostudies-literature | 2023 Sep

REPOSITORIES: biostudies-literature