Patterns of distribution of the invasive alga Asparagopsis armata Harvey: a multi-scaled approach

Martins, Gustavo M.; Cacabelos, Eva; Faria, João; Álvaro, Nuno V.; Prestes, Afonso C. L.; Neto, Ana I.

doi:10.3391/ai.2019.14.4.02

Cited by 19 publications

(16 citation statements)

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“…Although there is evidence that the main effects may be a consequence of the biologicallyactive metabolites present in the A. armata exudate with strong antiherbivore, antifungal and antibiotic activity [16,[64][65][66], especially volatile halocarbons such as bromoform, dibromomethane, 1,2-di-bromoethylene, dibromochloromethane and tribromoethylen [39], there is still a poor understanding on the impact this invasive seaweed may have in the surrounding biota. This is particularly important in the microenvironments within intertidal pools due to the encountered extreme conditions and where major algal blooms may form, especially in late spring/early summer, when the temperature starts to rise [2].…”

Section: Discussionmentioning

confidence: 99%

“…The continuous proliferation of invasive seaweeds has grown a great concern considering their impacts on native marine communities, mainly because they naturally threaten the availability of resources compromising the natural ecosystem functioning [1]. The red marine macroalgae Asparagopsis armata Harvey, 1855 (Bonnemaisoniales, Rhodophyta), native from southern Australia and New Zealand, is identified as an invasive species and widely distributed in the Mediterranean and Atlantic coasts of Europe including Portugal [2,3]. This temperate alga can overcome the ecological barriers and colonise diverse environmental conditions, mainly due to its fast growth rate, lack of predators and its effective spread, both through the tetrasporophyte floating balls and the gametophyte phase that hooks onto floating material [4,5].…”

Section: Introductionmentioning

confidence: 99%

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How Does Mytilus galloprovincialis Respond When Exposed to the Gametophyte Phase of the Invasive Red Macroalga Asparagopsis armata Exudate?

Coelho

Oliveira

Pires

et al. 2021

Water

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Asparagopsis armata is classified as an invasive species in Europe. Through the exudation of secondary metabolites, this macroalga holds a chemical defence against consumers, with potential toxic effects to native rocky shore communities. This study aims to evaluate the potential impact of A. armata (gametophyte) exudate in a native species, the mussel Mytilus galloprovincialis, in terms of biochemical and organismal effects. The 96 h-LC50 was 3.667% and based on it, exudate concentrations (0.25; 0.5; 1; 2%) were determined to further sublethal experiments. These sublethal concentrations caused no oxidative damage in the digestive gland since lipid peroxidation and protein carbonylation were not affected. Nevertheless, there was a significant rise in the electron transport system activity and total glutathione content in muscle, suggesting an increased non-enzymatic antioxidant capacity and consequent energy consumption to cope with potential pro-oxidant compounds. This might have contributed to the observed decline in cellular energy allocation of the exposed mussels. At the organismal level, clearance capacity declined along the concentration gradient. Moreover, the number of functional byssuses decreased with increasing concentrations and a significant reduction in their attachment strength was observed. These findings suggest that the presence of A. armata may compromise M. galloprovincialis integrity in the invaded coastal areas.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

How Does Mytilus galloprovincialis Respond When Exposed to the Gametophyte Phase of the Invasive Red Macroalga Asparagopsis armata Exudate?

Coelho

Oliveira

Pires

et al. 2021

Water

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“…Asparagopsis taxiformis (Delile) Trevisan 1845 ( Figure 5 ) is a red seaweed native from Australia [ 96 ], with a high capability to cope with temperature variations [ 97 ], thus being distributed through tropic and sub-tropical regions [ 98 ]. This species is currently well established in Europe and is considered an invasive seaweed species in the Iberian Peninsula, particularly in Spain and in the Portuguese archipelagos (Azores and Madeira), due to their coverage area and noxious effects on the surrounding fauna and flora [ 74 , 98 , 99 ].…”

Section: Invasive Seaweeds: An Important Feedstock To Food Industrmentioning

confidence: 99%

Invasive Seaweeds in the Iberian Peninsula: A Contribution for Food Supply

et al. 2020

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The introduction of exotic organisms in marine ecosystems can lead to economic and ecological losses. Globally, seaweeds represent a significant part of these non-indigenous species (NIS), with 407 introduced algal species. Furthermore, the presence of NIS seaweeds has been reported as a major concern worldwide since the patterns of their potential invasion mechanisms and vectors are not yet fully understood. Currently, in the Iberian Peninsula, around 50 NIS seaweeds have been recorded. Some of these are also considered invasive due to their overgrowth characteristic and competition with other species. However, invasive seaweeds are suitable for industrial applications due to their high feedstock. Hence, seaweeds’ historical use in daily food diet, allied to research findings, showed that macroalgae are a source of nutrients and bioactive compounds with nutraceutical properties. The main goal of this review is to evaluate the records of NIS seaweeds in the Iberian Peninsula and critically analyze the potential of invasive seaweeds application in the food industry.

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“…A. armata was introduced to the Azores in the early 20th century in the Atlantic and Mediterranean. It is widely distributed in the eastern North Atlantic Ocean, including Canaries and Macaronesia (Dijoux et al 2014), where it is also considered invasive (Martins et al 2019). It shows a tropical-to warm-temperate distribution, presenting biomass peaks in spring and summer (Andreakis et al 2004).…”

Section: Introductionmentioning

confidence: 99%

Macroalgae niche modelling: a two-step approach using remote sensing and in situ observations of a native and an invasive Asparagopsis

et al. 2021

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We are facing a global loss of biodiversity due to climate change. This will lead to unpredictable changes in ecosystems, affecting the goods and services they provide and facilitating the introduction of non-indigenous marine species. This represents one of the major threats to marine biodiversity and therefore, there is a strong need to assess, map and monitor these alien species. The appearance of non-indigenous species is especially dangerous in fragile ecosystems, and it is of great importance to better understand the invasion mechanisms of these invasive species. This is the case for invasive alga Asparagopsis armata, present in the Azores Archipelago. In this study, we propose a methodology to define the realized ecological niche of this invasive alga, alongside the native Asparagopsis taxiformis, to understand better its distribution and potential impact on native communities and ecosystem services. These objectives comply with the EU Biodiversity strategy for 2020 goals and the need to map and assess ecosystems and their services. The lack of reliable high-resolution data makes this a challenging task. Within this scope, we propose a combination of Remote Sensing, Unmanned Aerial Vehicle based imagery together with in-situ field data to build ecological niche modelling approaches as a cost-effective methodology to identify and characterize vulnerable marine ecosystems. Our results show that this combination can help achieve monitoring, leading to a better understanding of ecological niches and the consequences of non-indigenous species invasion in fragile ecosystems, like small islands, when faced with limited data.

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Patterns of distribution of the invasive alga Asparagopsis armata Harvey: a multi-scaled approach

Cited by 19 publications

References 0 publications

How Does Mytilus galloprovincialis Respond When Exposed to the Gametophyte Phase of the Invasive Red Macroalga Asparagopsis armata Exudate?

How Does Mytilus galloprovincialis Respond When Exposed to the Gametophyte Phase of the Invasive Red Macroalga Asparagopsis armata Exudate?

Invasive Seaweeds in the Iberian Peninsula: A Contribution for Food Supply

Macroalgae niche modelling: a two-step approach using remote sensing and in situ observations of a native and an invasive Asparagopsis

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