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 DOI Creative Commons
Letizia Iuffrida, Silvia Franzellitti

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

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 DOI Creative Commons
Letizia Iuffrida, Silvia Franzellitti

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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