carotenoids
carotenoids on World Data Ocean: a running collection of 3 stories we have gathered and hand-picked because they are worth your time. Every post here touches on carotenoids in some way — the news, the analysis, the deep dives, and the occasional surprise find. A Global Hub for Ocean Intelligence 4 World Data Ocean is a centralized digital platform where researchers, scientists, and ocean enthusiasts converge to explore, analyze, and… New stories are added to this page as we find them, so check back if you want to keep up with what is happening around carotenoids, or subscribe to the RSS feed to get them as soon as they are published. Browse the collection below, or head back to the homepage to see everything World Data Ocean is covering right now.
From a non-biologist: are a sea lion’s eyes meant to be so red? Found on a seal/sea lion insta account
The striking red coloration observed in a sea lion’s eyes, as recently shared online, warrants scientific clarification. While the appearance can be startling, this pigmentation is typically due to a combination of factors including blood vessels and the tapetum lucidum – a reflective layer behind the retina common in marine mammals that enhances vision in low-light conditions. This phenomenon is a validated adaptation, not a sign of distress.
Natural reproductive modulators in aquaculture: endocrine mechanisms, microalgal and plant-derived bioactives, and sustainability perspectives
Modern aquaculture increasingly seeks sustainable alternatives to synthetic hormonal induction for reproductive management. This review critically examines natural reproductive modulators—specifically, bioactives derived from microalgae and plants—assessing their potential to support reproduction through various pathways. Evaluated compounds include LC-PUFAs, carotenoids, and phytoestrogens, with observed impacts on gamete quality, fecundity, and offspring survival. While promising, particularly for broodstock conditioning, current evidence suggests these bioactives function best as complementary tools, rather than direct replacements for hormonal induction.
Green ultrasound-assisted extraction of pigments from Mexican Caribbean Sargassum
The escalating accumulation of *Sargassum* spp. along Caribbean coastlines presents both an environmental and economic challenge. These macroalgae contain valuable pigments—including fucoxanthin—exhibiting antioxidant and anti-inflammatory properties. This study investigates ultrasound-assisted extraction (UAE) utilizing hydroethanolic mixtures as a sustainable alternative to conventional, solvent-intensive methods. Results demonstrate optimized pigment recovery—specifically, 26.64 mg g⁻¹ dw fucoxanthin—achieved with 70% ethanol at 60°C, supporting a scalable strategy for *Sargassum* valorization.