Article
Ecology
Alexa Mutti, Iris Kubler-Dudgeon, Steve Dudgeon
Summary: The study found that predation can reduce spatial variability in community structure, and as environmental changes accelerate, the variability effects of ecological processes and responses are likely to become increasingly important determinants of community dynamics.
Article
Environmental Sciences
Bryan Thompson, Paul R. Brooks, Veronica Farrugia Drakard, Fiona Kubin, Hannah S. Earp, Ignacio Alvarez-Cienfuegos, Pippa J. Moore, Tasman P. Crowe
Summary: Artificial structures in coastal marine environments have lower biodiversity and smaller population sizes compared to natural rocky shores. This study examines the population structure, reproductive states, and embryo production of Nucella lapillus populations on artificial structures and natural shores in Ireland and Wales. The results show that artificial structures support larger individuals and fewer juveniles compared to natural shores. The difference observed may be due to the lack of microhabitats and subtle variations in structure slope on artificial structures.
MARINE ENVIRONMENTAL RESEARCH
(2023)
Article
Ecology
Nadja Meister, Tom J. Langbehn, Oystein Varpe, Christian Jorgensen
Summary: This study investigates the decline of blue mussels in western Norway and proposes the hypothesis that crawling predators that cannot reach floating structures may be driving their decline. The research found that blue mussels thrive on floating structures but have significantly decreased in numbers on rocky shores. Exclusion of crawling predators like dogwhelks confirmed that blue mussels can continue to grow and thrive when out of reach of predators.
MARINE ECOLOGY PROGRESS SERIES
(2023)
Article
Fisheries
Heloise Gendre, Yosra Ben Cheikh, Frank Le Foll, Alain Geffard, Melissa Palos Ladeiro
Summary: This study compared the sensitivity of cellular immunomarkers to chemical stressors combined with bacterial challenge in two mussel species from different environments. The results showed that the two mussel species had different basal levels and responded differently to chemical exposure and bacterial challenge. This work highlights the species-specific sensitivity of mussel immunomarkers to contaminants and the necessity of considering the presence of non-pathogenic microorganisms in future in situ applications.
FISH & SHELLFISH IMMUNOLOGY
(2023)
Article
Engineering, Marine
Matthew N. George, Michael J. O'Donnell, Michael Concodello, Emily Carrington
Summary: The study found that although ocean acidification does not prevent adult bivalves from repairing their shells, it may elicit stress responses that impose energetic constraints on their physiology.
JOURNAL OF MARINE SCIENCE AND ENGINEERING
(2022)
Article
Behavioral Sciences
Michael J. Sheriff, Isabella Mancini, Olivia K. Aguiar, Eleanor R. Dinuzzo, Sophia Maloney-Buckley, Sam Sonnega, Sarah C. Donelan, Ulrika Candolin
Summary: This study found that food availability influences prey's response to nonlethal predation risk. The results showed that when food was available, prey had higher risk-aversion behavior and slower growth. However, when food was not available, predation risk had no effect on prey growth.
BEHAVIORAL ECOLOGY
(2023)
Review
Ecology
Ricardo A. Scrosati
Summary: Predators can influence prey demography not only through consumption but also through triggering behavioral changes in prey. Recent research using intertidal invertebrates as prey and dogwhelks as predators showed that the presence of predators can affect recruitment and reproductive output of prey species by inducing avoidance behavior. This study provides evidence of nonconsumptive effects of predators on prey demography in coastal marine systems.
FRONTIERS IN ECOLOGY AND EVOLUTION
(2021)
Article
Multidisciplinary Sciences
Maria Skazina, Nelly Odintsova, Maria Maiorova, Angelina Ivanova, Risto Vainola, Petr Strelkov
Summary: The study identified two lineages of bivalve transmissible neoplasia (BTN), BTN1 and BTN2, in blue mussels Mytilus, with BTN2 being reported for the first time in its original host species M. trossulus in the Sea of Japan. The presence of BTN2 in M. trossulus suggests a common origin of BTN2 diversity in populations of M. trossulus outside the Northeast Pacific, possibly in the Northwest Pacific.
SCIENTIFIC REPORTS
(2021)
Article
Engineering, Marine
Valentina Vladimirovna Slobodskova, Victor Pavlovich Chelomin, Sergey Petrovich Kukla, Andrey Alexandrovich Mazur
Summary: The pollution of coastal water areas by heavy metals is an increasing problem. This study focused on investigating the impact of copper (Cu2+) accumulation and tissue depuration on genome integrity and DNA repair ability in the gill cells of Mytilus trossulus. While the biochemical detoxification system was functional, destructive processes such as the accumulation of lipid peroxidation products (MDA) and DNA damage were observed. However, in the process of depuration from Cu2+, the levels of DNA damage and MDA content were significantly reduced, albeit at a slower rate.
JOURNAL OF MARINE SCIENCE AND ENGINEERING
(2022)
Article
Environmental Sciences
Rihab Jaouani, Coraline Roman, Justine Decaix, Fabienne Lagarde, Amelie Chatel
Summary: The effects of aging microplastics (MPs) made of polyethylene (PE) were investigated in the marine mussel Mytilus edulis, which is commonly used as a bioindicator, through in vitro and in vivo experiments. Gene expression levels related to detoxification, immune system, cytoskeleton, and cell cycle control were evaluated using quantitative RT-qPCR. The study found differential expression levels depending on the state of plastic degradation (aged vs non-aged) and method of exposure (in vitro vs in vivo). The study highlights the usefulness of molecular biomarkers based on gene expression analysis in an ecotoxicological context, providing indication of relative slight changes compared to other biochemical approaches. In addition, in vitro analysis can generate a large amount of data on the toxicological effects of MPs.
MARINE POLLUTION BULLETIN
(2023)
Article
Fisheries
Efflam Guillou, Carole Cyr, Nicolas Toupoint, Rejean Tremblay
Summary: Bivalve aquaculture in nearshore sites has expanded worldwide. Mussel farming productivity is commonly assumed to depend on survival and growth performance, which can be highly variable among spat stocks originating from different sites, even at a microgeographical scale. Offshore conditions clearly enhanced overall growth performance independently of stock origin, as shown by the higher condition indexes, higher energy lipids (triacylglycerol), and generally higher glycogen content in mussels at the end of the production cycle. The observed survival (+23%) and growth (+27%) trends support the hypothesis that offshore cultivation represents a valuable strategy for mussel aquaculture development.
AQUACULTURE REPORTS
(2023)
Article
Environmental Sciences
Melody S. Clark, Lloyd S. Peck, Jakob Thyrring
Summary: The Arctic is warming rapidly, allowing invasive species to survive. Some marine species can tolerate high temperatures, but the Mytilus edulis is usually unable to survive in extreme heat. Research indicates that M. edulis has a wide acclimation ability, enabling it to withstand Arctic warming and temperature variations.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Food Science & Technology
Matthew Bennion, Liam Morrison, Roseanne Shelley, Conor Graham
Summary: The global reliance on seafood as a source of animal protein is increasing, with a shift towards farmed produce over wild caught due to various factors. Despite rising production, factors like disease outbreaks, toxic algae blooms, pollution, and food fraud continue to pose risks to the market, highlighting the need for accurate traceability tools for regulators to ensure consumer safety and trust. Techniques like trace element fingerprinting show promise in identifying the location and date of harvest of bivalve shellfish, providing a reliable scientific-based tool for seafood regulators to maintain food safety standards.
Article
Environmental Sciences
Solomia M. Bushell, Bruce A. Wright, Jacqueline Knue, Patrick L. Tomco
Summary: Paralytic shellfish poisoning is a global issue that requires additional screening methods and rapid testing capacities. This study used 1H NMR spectroscopy-based metabolomics to identify biomarkers of Paralytic Shellfish Toxin (PST) exposure in Alaskan mussels. The research found that high levels of PST contamination in mussels led to alterations in energy and amino acid metabolism, as well as disturbances in osmoregulation. This study demonstrates the effectiveness of 1H NMR-based metabolomics in understanding the biological effects of PST on mussel populations and identifying PST contamination in Mytilus trossulus.
MARINE POLLUTION BULLETIN
(2022)
Article
Chemistry, Medicinal
Alina P. P. Filshtein, Irina V. V. Chikalovets, Tatyana O. O. Mizgina, Pavel A. A. Lukyanov, Kuo-Feng Hua, Oleg V. V. Chernikov
Summary: Most proteins can form homooligomeric protein complexes through self-association. Molecular modeling methods are widely used to study biologically active molecules. In this study, computer simulation was used to describe the spatial organization of a lectin from M. trossulus, revealing that its dimerization provides six ligand binding sites that may contribute to its biological properties. The ability of MTL to form dimeric and oligomeric structures was confirmed by dynamic light scattering and SDS-PAGE methods.
Editorial Material
Ecology
Ricardo A. Scrosati
FRONTIERS IN ECOLOGY AND THE ENVIRONMENT
(2021)
Review
Ecology
Ricardo A. Scrosati
Summary: Predators can influence prey demography not only through consumption but also through triggering behavioral changes in prey. Recent research using intertidal invertebrates as prey and dogwhelks as predators showed that the presence of predators can affect recruitment and reproductive output of prey species by inducing avoidance behavior. This study provides evidence of nonconsumptive effects of predators on prey demography in coastal marine systems.
FRONTIERS IN ECOLOGY AND EVOLUTION
(2021)
Article
Plant Sciences
Ricardo A. Scrosati, Alexis M. Catalan, Nelson Valdivia
Summary: Fucoid macroalgal canopies significantly reduce beta diversity in intertidal communities, indicating a limitation on the changes in species composition. This suggests that these foundation species can have opposing effects on alpha and beta diversity.
Article
Environmental Sciences
Sonja M. Ehlers, Julius A. Ellrich, Jochen H. E. Koop
Summary: Microplastics were found in rocky intertidal organisms across locations, wave exposure and years, with snails serving as useful bioindicators for microplastic loads. The majority of the microplastics consisted of paint chips likely derived from ships. This study provides a comprehensive baseline for examining historic and future microplastic dynamics in rocky intertidal systems.
ENVIRONMENTAL POLLUTION
(2022)
Article
Environmental Sciences
Ricardo A. Scrosati
FRONTIERS IN MARINE SCIENCE
(2022)
Article
Environmental Sciences
Ricardo A. Scrosati, Janelle K. Holt
FRONTIERS IN MARINE SCIENCE
(2021)
Article
Environmental Sciences
Barbara Riedemann-Saldivia, Joseline A. Buchner-Miranda, Luis P. Salas-Yanquin, Nelson Valdivia, Alexis M. Catalan, Ricardo A. Scrosati, Oscar R. Chaparro
Summary: This study evaluated the non-consumptive effects of a predatory snail on a dominant mussel species. The results showed that predator cues triggered behavioral changes and physiological consequences in the prey, potentially impacting ecosystem processes and community structure indirectly.
MARINE ENVIRONMENTAL RESEARCH
(2022)
Article
Ecology
Barbara van Genne, Ricardo A. Scrosati
Summary: The abundance-occupancy relationship (AOR) is a commonly observed pattern in species assemblages that can be used to infer the relationship between species abundance and occupancy. While this pattern has been extensively studied in terrestrial systems, its applicability in aquatic systems needs to be evaluated. This study found that the AOR holds in rocky intertidal communities, expanding its applicability to marine benthic systems.
MARINE BIOLOGY RESEARCH
(2022)
Article
Environmental Sciences
Ricardo A. Scrosati, Matthew J. Freeman, Julius A. Ellrich, Willy Petzold
Summary: This study documents the biogeographic variation at mid-to-high intertidal elevations in wave-exposed rocky habitats on the Atlantic coast of Nova Scotia. It found that northern locations are severely disturbed by ice scour, while southern locations exhibit higher species richness and abundance. Temperature and pelagic food supply were found to be the main factors influencing the biogeographic patterns.
FRONTIERS IN MARINE SCIENCE
(2022)
Editorial Material
Ecology
Abigael M. Manning, Ricardo A. Scrosati
FRONTIERS IN ECOLOGY AND THE ENVIRONMENT
(2023)
Article
Ecology
Alexis M. Catalan, Daniela N. Lopez, Eliseo Fica-Rojas, Bernardo R. Broitman, Nelson Valdivia, Ricardo A. Scrosati
Summary: This study investigated the effect of canopy-forming alga on spatial environmental heterogeneity and beta diversity in intertidal communities. Canopy cover was found to reduce the spatial variation of temperature and desiccation, resulting in lower beta diversity for sessile species but not for mobile species.
Article
Biodiversity Conservation
Ricardo A. Scrosati, Nicole M. Cameron
Summary: Contemporary climate change has led to an increase in extreme weather events, such as heat waves. This study provides visual evidence of mass bleaching in intertidal seaweeds caused by an unusually severe cold snap in Atlantic Canada. The bleaching was observed in two canopy-forming algae species, Chondrus crispus and Corallina officinalis, following several hours of extreme low temperatures. The loss of these foundation species may have negative effects on intertidal biodiversity.
Editorial Material
Ecology
Nicole M. Cameron, Ricardo A. Scrosati
Article
Ecology
Nicole M. Cameron, Ricardo A. Scrosati, Nelson Valdivia
Summary: This study found that the structural and functional properties of foundation species can predict the functional aspects of associated communities. This has important implications for developing effective restoration strategies after the loss of foundation species.
Article
Biodiversity Conservation
Ricardo A. Scrosati
Summary: Intertidal mussel stands play a crucial role in biodiversity conservation on temperate rocky seashores, but their integrity is increasingly threatened by successive environmental extremes.