Challenges and opportunities of the exotic invasive macroalga Rugulopteryx okamurae (Phaeophyceae, Heterokontophyta)

Journal of Applied Phycology, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 13, 2025

Abstract The invasion of Rugulopteryx okamurae along the southern European coastline is producing significant ecological and socioeconomic impacts. Its rapid proliferation high adaptability have cause severe ecosystem disruptions, displacing indigenous species altering habitat structures. Various factors, including favorable environmental conditions chemical defenses, contributed to its spread. This situation has prompted urgent interdisciplinary research implementation management strategies. Regulatory frameworks been established address invasive status, aiming control bio-invasion. Valorization strategies could contribute sustainable marine biotechnology advancements. R. presents a wide variety valuable molecules in internal composition, such as alginates, terpenoids or carotenoids, with potential biotechnological applications. Promising results obtained using compost biostimulants, supplements aquafeed part biomaterial develop eco-friendly products. Some like shown anti-inflammatory properties applications nutraceutical industry. However, challenges remain fully understanding biology, impacts, effective measures. Coordinated efforts among scientists, politicians, companies stakeholders are essential mitigate spread explore for resource utilization. economic impacts being studied but there still scarce number studies follow strategy based blue circular economy.

Language: Английский

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Process optimization of the extraction of reducing sugars and total phenolic compounds from the invasive alga Rugulopteryx okamurae by response surface methodology (RSM)

Algal Research, Journal Year: 2024, Volume and Issue: 80, P. 103500 - 103500

Published: April 8, 2024

The brown marine alga Rugulopteryx okamurae (R. okamurae) has quickly spread through the Mediterranean coasts since it was firstly spotted in area 2015. This alien species already colonized a great part of western and displaced local biota, disrupting natural autochthonous ecosystem. Moreover, related 'green' tides also provoke environmental problems ashore that need to be addressed. Comprehending potential this unwanted biomass could vital importance lessen its ecological impact. In study, R. assessed for as raw material extraction reducing sugars polyphenolic compounds with antioxidant capacities. process evaluated optimized using response surface methodology (RSM) combined modified Box-Behnken design. Initially, 2 key operational factors were identified most influential parameters (i.e. drying temperature milling time). However, type solvent use zeolite included design potentially have significant impact on process. analyzed responses yields total phenolic (TPC) (RS). For TPC based ethanol solvent, 60 °C zeolite-assisted time s, reaching maximum yield 15.33 ggallic acid kg−1. RS water 100 zeolite-absence 50s, 10.42 gglucose

Language: Английский

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First Record of the Invasive Alien Species Rugulopteryx okamurae (Phaeophyceae, Dictyotales) along the Eastern Coast of Sicily (Italy, Mediterranean Sea): Is It Ready to Expand into the Ionian Sea?

Diversity, Journal Year: 2024, Volume and Issue: 16(7), P. 424 - 424

Published: July 19, 2024

The Mediterranean Sea is a hotspot for the introduction of non-indigenous species. Among them, invasive alien species can seriously affect areas they colonize, not only by altering marine food webs and community structure, but also harming certain economic activities, such as fishing, tourism, aquaculture infrastructure. Rugulopteryx okamurae brown macroalga considered fourth most harmful among 10 reported in Mediterranean; fact, it has recently been included list Union concern due to its serious impact on biodiversity socioeconomic implications. This was first time 2002 Thau Lagoon (France), introduced Japanese oyster Magallana gigas. Since then, this spread both Atlantic Ocean with strong behavior, particularly along Strait Gibraltar. Italian waters, Gulf Palermo (Sicily). In study, we report record further east, Ionian Sea, where previously recorded, provide possible explanations spreading arrival routes area. rapid expansion R. raising concerns; thus, order safeguard native communities, crucial keep monitoring so that regularly update distribution follow up dynamics basin.

Language: Английский

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Impact of the invasive brown alga Rugulopteryx okamurae on the benthic communities in the Northwestern Mediterranean Sea

Estuarine Coastal and Shelf Science, Journal Year: 2024, Volume and Issue: 310, P. 109010 - 109010

Published: Oct. 31, 2024

Language: Английский

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Rapid invasion and expansion of the invasive macroalgae Rugulopteryx okamurae in the Mediterranean and Atlantic: A 10-year review

Marine Pollution Bulletin, Journal Year: 2024, Volume and Issue: 209, P. 117194 - 117194

Published: Oct. 31, 2024

Language: Английский

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Assessment of the Rugulopteryx okamurae invasion in Northeastern Atlantic and Mediterranean bioregions: colonisation status, propagation hypothesis and temperature tolerance thresholds

Marine Environmental Research, Journal Year: 2025, Volume and Issue: unknown, P. 107093 - 107093

Published: March 1, 2025

Language: Английский

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Spatial Distribution and Potential Impact of Drifted Thalli of the Invasive Alga Rugulopteryx okamurae in Circalittoral and Bathyal Habitats of the Northern Strait of Gibraltar and the Alboran Sea

Diversity, Journal Year: 2023, Volume and Issue: 15(12), P. 1206 - 1206

Published: Dec. 7, 2023

The arrival of a new invasive alga, Rugulopteryx okamurae, in the Strait Gibraltar (SoG) 2015 marked an unprecedented milestone North African and, later, European marine ecosystems. Nowadays, it is colonising vast infralittoral areas and significantly modifying some habitats associated communities southern Iberian Peninsula. In recent expeditions, high amount free drifted thalli this alga has been detected different circalittoral bathyal northern SoG Alboran Sea. present study combines quantitative data obtained with use remotely operated vehicle (ROV) bottom otter trawl. coverage–entanglement level on benthic invertebrates (e.g., not covering, covering only basal part, one-third invertebrate, etc.) was also annotated from picture frames taken locations abundant thalli. underwater images, were mainly bottoms north-western Sea, between 50 to ca. 450 m depth. Nevertheless, trawl samples north-central north-eastern Small organisms encrusting sponges, hydrozoans, generally displayed low levels large sessile colonial complex three-dimensional morphology gorgonians, scleractinians) reached R. okamurae entangled parts their colonies. these suspension feeding may hinder capability long term, resulting habitat deterioration near future.

Language: Английский

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Assessing Golden Tides from Space: Meteorological Drivers in the Accumulation of the Invasive Algae Rugulopteryx okamurae on Coasts

Remote Sensing, Journal Year: 2024, Volume and Issue: 16(15), P. 2689 - 2689

Published: July 23, 2024

Massive accumulations of invasive brown algae Rugulopteryx okamurae are exacerbating environmental and socio-economic issues on the Mediterranean potentially Atlantic coasts. These golden tides, likely intensified by global change processes such as changes in wind direction intensity rising temperatures, pose increasing challenges to coastal management. This study employs Normalized Difference Vegetation Index (NDVI), with values above 0.08 from Level-2 Sentinel-2 imagery, effectively monitor these strandings along coastline Los Lances beach (Tarifa, Spain) Strait Gibraltar Natural Park 2018 2022. is one most affected R. bioinvasion Spain. The analysis reveals that determines spatial distribution biomass accumulated shore. highest average NDVI western patch were observed south-easterly winds, while eastern patch, higher recorded south-westerly, westerly north-westerly winds. maximum coverage correlates elevated temperatures minimal rainfall, peaking between July October. Leveraging insights, we propose a replicable methodology for early detection strategic pre-shore collection biomass, which could facilitate efficient cleanup strategies enhance utility biotechnological applications. approach promises cost-effective adaptability across different geographic areas impacted tides.

Language: Английский

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Assessing Golden Tides from Space: Meteorological Drivers in the Accumulation of the Invasive Algae Rugulopteryx Okamurae on Coasts

Published: Jan. 1, 2024

Language: Английский

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Understanding the invasion of the macroalga Rugulopteryx okamurae (Ochrophyta) in the northern Alboran Sea through the use of biogeographic models

The Science of The Total Environment, Journal Year: 2024, Volume and Issue: 955, P. 176851 - 176851

Published: Oct. 11, 2024

Rugulopteryx okamurae is a brown alga native to the northwestern Pacific and invasive elsewhere. It was first sighted in southern Strait of Gibraltar 2015, expanded northern 2016, had covered most Alboran Sea by 2021. Understanding factors that may explain its different phases colonisation crucial for developing mitigation control measures. We modelled yearly distribution R. from 2016 2021 using favourability function, which produces commensurable biogeographic models despite variations species prevalence across years. This function also allows use fuzzy logic operations combine previous environmental based on explanatory factors, namely biotope, biocoenosis, coastal influence, accessibility through dispersion, oceanographic characteristics. Significant were assembled, their intersection union applied. resulted two final each year, used predict following The exhibited high predictive capacity, as years accurately predicted year or even multiple ahead. Accessibility dispersion characteristics critical during initial establishment, while complete establishment depended all five together. Expansion whole coast explained favourable conditions any except influence saturation invasion. conclude prove valuable understanding contributed spread Sea. approach could help prevent further mitigate ecosystem commercial consequences okamurae's

Language: Английский

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