Mangrove-associated Pacific oysters (Magallana gigas) influence estuarine biodiversity

NeoBiota, Journal Year: 2025, Volume and Issue: 98, P. 1 - 26

Published: March 7, 2025

Estuarine ecosystems are often characterised by endemic foundation organisms which facilitate ecosystem interactions and processes established over millennia. Introduction of non-native species can significantly alter ecological communities functions. Here, we assessed the effects introduced, reef-forming Pacific oyster Magallana gigas , within a temperate Australian mangrove-dominated estuary. Specifically, investigated whether mangrove-attached M. reefs influenced intertidal fish invertebrate communities, foraging behaviour. We measured contrasted benthic structure faunal fringing bare sediment, Avicennia marina mangrove reef habitats using combination quadrats, fyke nets remote unbaited video (RUV) surveys. showed no impacts on pneumatophore density or morphology, but were positively associated with higher seedling densities. Furthermore, community metrics (e.g. richness, biomass, length) typically in compared to other habitats. However, several mobile, predominantly detected reefs, including exotic gobies European shore crabs Carcinus maenas declared marine pest. Overall, found that forests biodiverse fisheries-targeted species, also facilitated species. These outcomes highlight some pros cons complexity managing estuaries globally where oysters increasingly co-occur habitat-forming

Language: Английский

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Genetic improvement of oysters: Current status, challenges, and prospects

Reviews in Aquaculture, Journal Year: 2023, Volume and Issue: 16(2), P. 796 - 817

Published: Oct. 30, 2023

Abstract Oysters are one of the most commercially important shellfish species and have been cultured for thousands years. Oyster aquaculture supports major industries in many countries. Over last few decades, oyster breeding developed rapidly to meet continually growing demand. Many researchers made significant efforts toward genetic improvement traits oysters. Some strains with fast‐growing, disease‐resistant, stable shell‐colours through selective breeding. hybrid varieties by crossing different geographical populations or cultivated strains. Several hybrids exhibit considerable variation improved productive performance. Additionally, polyploid induction technologies applied industry, which provides a useful tool performance containment stocks. At present, development molecular also great opportunity improvement. These advances quality oysters, brought economic benefits, conducive sustainability production. Nonetheless, there still some limitations obstacles breeding, such as infectious diseases, summer mortality, conservation germplasm resources, environmental contamination, climate change. The present review an overview current status, challenges, prospects

Language: Английский

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Characterization of three plastic forms: Plasticoncrete, plastimetal and plastisessiles

The Science of The Total Environment, Journal Year: 2023, Volume and Issue: 895, P. 165073 - 165073

Published: June 22, 2023

Plastic forms, including plastiglomerate, pyroplastic, plasticrusts, anthropoquinas, plastistone and plastitar, were recorded worldwide. These plastic forms derive from geochemical or geophysical interactions such as heat-induced fusion with rock in campfires, incomplete combustion, water motion-driven abrasion the rocky intertidal zone, deposition hardened sediments bonding tar. Thereby, these can profoundly influence fate of plastics environment. This study characterized three novel (plasticoncrete, plastimetal plastisessiles) discovered on Helgoland island (North Sea). Plasticoncrete consisted common polyethylene (PE) polypropylene (PP) fibers concrete. Plastimetal included PE rusted metal. Plastisessiles attached to benthic substrates by sessile invertebrates (oysters polychaetes). are first composed two man-made materials. show that not only result human- environment-mediated but also biological between plastic. All (bulk density ≥ 1.4 g/cm3) sunk during floating tests hardly changed their positions a 13-day field experiment 153- 306-day monitorings, indicating local formation, limited mobility longevity. Still, experimentally detached floated, confirming formation influences Furthermore, showed plasticoncrete got deposited beach sand under wavy windy conditions, coastal waves onshore winds drive sediments. We provide records Mallorca (Mediterranean Sea) Hikoshima (Sea Japan), respectively, which no phenomena. our contributes growing fundamental knowledge is essential understand role pollutants habitats

Language: Английский

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Growth, survival and gonad development of diploids, triploids and tetraploids of ‘Haida No. 3’ line of the Pacific oyster Crassostrea gigas

Aquaculture, Journal Year: 2023, Volume and Issue: 571, P. 739472 - 739472

Published: March 12, 2023

Language: Английский

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A Global Analysis of Climate Change and the Impacts on Oyster Diseases

Sustainability, Journal Year: 2023, Volume and Issue: 15(17), P. 12775 - 12775

Published: Aug. 23, 2023

Recently, global demand for seafood such oysters is increasing as consumers seek healthy and nutritive alternatives to a diet dominated by animal protein. This trend attributed the growing interest in sustainable strategies surge customer demand. Despite being one of most promising seafoods, oyster industry faces various challenges, increased infectious diseases promoted climate change, pollution, environmental burdens. Hence, industry’s current challenges must be addressed ensure long-term viability. One production (in response change) mortality or poor product quality from microbial infection. review reveals that change fosters pathogen development, significantly impacting disease spread, host susceptibility, survival rates oysters. Rising temperatures, driven climate, create favourable conditions bacteria viruses multiply spread quickly, making more susceptible ultimately adversely affecting industry. Climate-induced changes oyster-associated microbes pathogens, coupled with disruptions biochemical pathways physiological functions, can lead outbreaks reduced industry, profitability. These adverse effects could result decreased supply, potentially markets prices, necessitate additional investments management strategies. identifies highlights how aquatic pathogens will affect on scale. also presents an in-depth assessment change’s impacts relative their exposure possible future directions.

Language: Английский

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What Do We Know About Non-Native, Invasive, and Transplanted Aquatic Mollusks in South America?

Biology, Journal Year: 2025, Volume and Issue: 14(2), P. 151 - 151

Published: Feb. 1, 2025

Global awareness of introduced species as one the primary drivers biodiversity change—causing environmental impacts, and economic social effects—emphasizes need to enhance our understanding these species. Developing a comprehensive database will enable policymakers identify global bioinvasion patterns strengthen their capacity manage them effectively. Aquatic mollusks play crucial role in ecosystems they inhabit, influencing food webs nutrient cycling, habitat formation modification. They are also dominant group aquaculture, contributing significantly economy while causing losses through macrofouling posing health risks. Despite importance, information on introduction, establishment, dispersal mollusk South America remains scarce is often confined grey literature. With aim organizing, increasing, strengthening knowledge non-native transplanted general aquatic particular, 29 specialists America, from seven countries, have been working collaboratively since 2016. Each member contributes expertise, data, bibliographic resources build status provide critical prevent future introductions transplants. In environments, 41 18 identified. Among them, bivalve Limnoperna fortunei stands out with greatest effect, gastropods Lymnaeidae Thiaridae represent significant concerns. Although this research represents major step forward, it highlights challenges such scarcity taxonomic studies limited investigation vast areas America. The compiled review serves resource for researchers, policymakers, public when addressing bioinvasions

Language: Английский

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The Regulation of γ-Aminobutyric Acid on Antioxidative Defense Response of Pacific Oyster upon High-Temperature Stress

Antioxidants, Journal Year: 2025, Volume and Issue: 14(2), P. 222 - 222

Published: Feb. 15, 2025

Recent studies have found that high temperatures cause oxidative stress and even mass mortality in Pacific oysters (Crassostrea gigas). The role of γ-aminobutyric acid (GABA) improving antioxidative defense aquatic animals is increasingly interest. In the present study, to high-temperature was examined, regulation GABA on further investigated. Following 6 h exposure 28 °C seawater, a significant increase mRNA expression levels nuclear factor-E2-related factor 2 (Nrf2), superoxide dismutase (SOD), catalase (CAT), as well activities SOD CAT, observed gill, compared those at 0 h. An glutamate decarboxylase (GAD), receptor (GABAAR-α GABABR-B) levels, contents were also detected after Furthermore, CAT significantly upregulated treatment, while decreased either GAD inhibitor or treatment under stress. Meanwhile, enhanced effects antioxidant enzyme reduced when Nrf2 inhibited by ML385, accompanied an MDA content. After stress, with group, GSK-3β treatment. elevation attenuated AKT Collectively, first activated receptors then increased content AKT/GSK-3β pathways protect against damage upon results offer new insights for understanding mechanisms neuroendocrine system molluscs.

Language: Английский

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Nuanced influences of subtidal artificial shellfish structures on nekton communities in urbanised estuaries

Marine and Freshwater Research, Journal Year: 2025, Volume and Issue: 76(6)

Published: April 9, 2025

Context Reef installation is increasingly considered for urbanised estuaries to enhance and restore ecological functions. Restoration structures are expected provide nekton habitat benefits, but early outcomes poorly understood. Aims This study assessed assemblage variation associated with an oyster reef restoration site, situated within the anthropogenically modified Port River–Barker Inlet estuary. Methods Nekton communities environmental variables were measured 6 weeks before, 14 months following restoration, at a control site. Modelling was used assess spatio-temporal variation. Key results Video monitoring detected 34 species, harvestable comprising 60.3% of total abundances. assemblages strongly influenced by interannual effects, few being directly related activities. supported non-native gobies during study. Conclusions These suggest that small-scale can have little detectable impact on fish in stages estuarine restoration. distinct seasonal Implications In urban characterised pre-existing artificial structures, small trial reefs may be functionally redundant as habitats until sufficient spatial-scale functional changes achieved.

Language: Английский

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Oxidative Stress and Response of the Antioxidant Complex of Pacific Oyster Tissues Magallana gigas (Thunberg, 1793) to Shell Damage by the Boring Sponge Pione vastifica (Hancock, 1849)

Russian Journal of Biological Invasions, Journal Year: 2025, Volume and Issue: 16(1), P. 43 - 52

Published: March 1, 2025

Language: Английский

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Effects of temperature and salinity on the larval early development, growth, and settlement of the diploid, triploid, and tetraploid Pacific oyster “Haida No. 2” strain

Aquaculture International, Journal Year: 2024, Volume and Issue: 32(5), P. 6097 - 6113

Published: March 6, 2024

Language: Английский

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