Transcriptional responses of Mediterranean mussels (Mytilus galloprovincialis) under the 2022 Marine Heatwave: a trade-off of physiological regulation between metabolism, stress response, and shell biomineralization in a mixed exposure scenario

Environmental Pollution, Journal Year: 2025, Volume and Issue: unknown, P. 126328 - 126328

Published: April 1, 2025

There has been a notable increase in occurrence and intensity of marine heatwaves (MHW) over the past decades, with consequent remarkable risk to vulnerable species as bivalves. This study examines responses farmed Mytilus galloprovincialis 2022 MHW that impacted Northwestern (NW) Adriatic Sea. Expression key transcripts involved functions digestive glands mantles were investigated explore putative acclimatory processes contributing mussel fitness. The was characterized by persistent sea temperature anomalies, elevated salinity, dramatically low chlorophyll-a levels. Despite temporal trends pH extreme seawater temperatures reached July August, carbonate system never undersaturation state, being favourable for bivalve biomineralization. Transcriptional profiles displayed 2-step response. In glands, metabolism lysosomal response functional categories showed an initial decrease (late May), recovery late August. Antioxidant cytoprotective related gene products February August increased expression, strong up-regulations mantles, shell biomineralization prompted stage MHW, likely withstand abrupt changes parameters maintain growth. At high intensities, energy diverted towards stress activation relative mRNA levels transcripts. Results trade-off between core physiological may contribute mussels cope adverse conditions NW

Language: Английский

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Elucidating responses of the intertidal clam Ruditapes philippinarum to compound extreme oceanic events

Marine Pollution Bulletin, Journal Year: 2024, Volume and Issue: 204, P. 116523 - 116523

Published: May 29, 2024

Language: Английский

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Bivalves under extreme weather events: A comparative study of five economically important species in the South China Sea during marine heatwaves

Marine Environmental Research, Journal Year: 2024, Volume and Issue: 202, P. 106716 - 106716

Published: Aug. 28, 2024

Language: Английский

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Short-term effects of an unprecedented heatwave on intertidal bivalve populations: fisheries management surveys provide an incomplete picture

Frontiers in Marine Science, Journal Year: 2024, Volume and Issue: 11

Published: Aug. 6, 2024

Introduction Coastal marine ecosystems, are particularly susceptible to climate change. One such threat is atmospheric heatwaves, which predicted increase in frequency, duration, and intensity. Many intertidal organisms already live at the edge of their thermal tolerance limits heatwaves can outstretch an organism’s ability compensate short term. In June 2021 Pacific Northwest region North America, including Salish Sea, experienced a significant heatwave during some lowest tides year. This was followed by numerous reports dead dying region-wide. A semi-quantitative rapid assessment found range both species- location-specific effects but generally recorded widespread negative impacts shellfish species across Sea. Methods Following these results, we opportunistically analyzed data collected bivalve resource managers from region. These datasets allowed us examine regional density size for clam oyster populations before after our quantitative understanding effects. Results We responses positive on density. While small changes size, site-species combinations displayed large shifts frequency. analyses did not indicate even moderate statistical support, with mean, driven part high variability data. Time intervals between surveys, ranging 2 over 25 months, had little effect observed indicating that any heatwave-induced may be masked inherent population ecology and/or survey methodology. Discussion analysis has highlighted need managers, greater research community, consider alternative approaches designed constrain order detect acute or extreme events. With change become more intense, targeted needed implications events continue effective management bivalves Sea worldwide.

Language: Английский

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Development and validation of a 66K SNP array for the hard clam (Mercenaria mercenaria)

BMC Genomics, Journal Year: 2024, Volume and Issue: 25(1)

Published: Sept. 9, 2024

Language: Английский

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Physiological energetics of selectively bred oysters (Crassostrea hongkongensis) under marine heatwaves

Marine Environmental Research, Journal Year: 2024, Volume and Issue: 204, P. 106871 - 106871

Published: Nov. 26, 2024

Language: Английский

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