Cardiac performance mirrors the passive thermal tolerance range in the oyster, Ostrea edulis DOI Creative Commons
Sandra Götze, Carl J. Reddin,

Isabel Ketelsen

et al.

Journal of Experimental Biology, Journal Year: 2024, Volume and Issue: unknown

Published: Dec. 24, 2024

Increasing frequencies of heatwaves threaten marine ectotherm species but not all alike. In exposed habitats, some rely on a higher capacity for passive tolerance at temperatures, thereby extending time-dependent survival limits. Here we assess how the involvement cardiovascular system in extended margins thermal performance curve is dependent warming rate. We study organismal and heart tissue cellular responses European oyster, Ostrea edulis, challenged by rapid (+2°C/h) gradual (+2°C/24h). Starting 22°C, cardiac activity was monitored as temperature increased, tracking curves. Hearts were collected discrete temperatures to determine cardiomyocyte metabolic profiles. Heart rate peaked lower ABT 30.5°C under than 33.9°C warming. However, oysters survived warming, with half dying (LT50) 36.9°C versus 34.8°C, respectively. As passed 30°C, rates fell profiles suddenly changed switched anaerobic metabolism survival. By 36°C, severe fluctuations Krebs-cycle-related metabolites accompanied failure. contrast, made gradual, extensive adjustments intracellular pathways, prolonging aerobic temperatures. This duration ABT, beyond which decreased sharply ceased. Our results emphasize forces tradeoff between maxima duration, via cellular-level impacts. possess adaptations that enable intertidal populations.

Language: Английский

Multi-tissue metabolomic profiling reveals the crucial metabolites and pathways associated with scallop growth DOI Creative Commons
Yihan Zhang, Huizhen Wang, Shiqi Liu

et al.

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

Published: Nov. 15, 2024

Bivalves represent a vital economic resource in aquaculture for their high productivity and extensive market demand. Growth is one of the most important desired traits bivalves, regulated by multiple levels, notably intricate metabolic processes. However, understanding profiles that influence bivalve growth limited, particularly from multi-tissue perspective. In this study, tissues Chlamys farreri with different performance were systematically investigated ultraperformance liquid chromatography quadrupole time-of-flight mass spectrometry (UPLC-Q-TOF-MS). Through comparing variation between fast-growing (FG) scallops slow-growing (SG) scallops, 613, 509, 105, 192 significantly metabolites (SDMs) identified mantle, gill, adductor muscle, digestive gland, respectively. Growth-related pathways including sphingolipid metabolism, fatty acid biosynthesis, ABC transporter pathway, along 11 SDMs associated all four tissues, implying they involved scallops. Tissue-specific profiling indicated sulfur-containing amino metabolism mantle potentially contributed to shell growth, while gill synergistically participated through various processes, such as tyrosine glycine, serine, threonine melanogenesis; energy was crucial muscle growth; nutrients digestion absorption gland linked scallop growth. Our results first comprehensive analysis C. farreri, offering valuable insights future production.

Language: Английский

Citations

1
Ocean Acidification and Sea Temperature Rise Affect the Queen Scallop Aequipecten opercularis (Linnaeus, 1758) in Captivity DOI Creative Commons
Ines Kovačić, Petra Burić, Neven Iveša

et al.

Applied Sciences, Journal Year: 2024, Volume and Issue: 14(22), P. 10660 - 10660

Published: Nov. 18, 2024

Climate change poses risks to bivalves; thus, searching for resilient alternative species is crucial sustainable fisheries. This study examines the impact of reduced pH and elevated temperature their combined effects on queen scallop Aequipecten opercularis in captivity. The results indicated that a low its growth rates both weight (0.03 ± 0.05 g/day) length (0.06 0.16 mm/day), as well leading decreases meat yield (20.75 2.75%) condition index (44.21 7.19%). Conversely, resulted an increased (0.07 0.23 g/day), (21.57 4.82%), (45.42 7.35%). Combined stressors initially promoted but ultimately produced unsustainable outcomes, resulting (18.28 2.60%) (38.92 8.23%), along with peak mortality rate 27%. These findings indicate while A. can withstand individual stressors, exposure simultaneous may compromise long-term viability aquaculture systems.

Language: Английский

Citations

0
13C-enrichment NMR spectroscopy: a tool to identify trophic markers and linkages DOI Creative Commons
Christian Bock,

Tianyi Zhao,

Sandra Götze

et al.

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

Published: Nov. 25, 2024

Current climate change, particularly ocean warming, will induce shifts in marine species distribution and composition, affecting the food web and, thus, trophic interactions. Analyses of stable isotopes 13 C 15 N are commonly used to detect markers for analyses. With current standard methods ecology, it is still challenging identify potential changes uptake utilization markers. In this work, we present a C-enrichment analysis by NMR spectroscopy track dietary carbon simple laboratory experiment primary producer its consumer (algae bivalve). particular, tested hypothesis temperature-dependent use tracing incorporation C-atoms. Unicellular phytoplankton, Phaeodactilum tricornutum , was reared medium containing C-labeled bicarbonate. The accompanying C-NMR spectra labeled P. showed specific profile compounds, including typical such as polyunsaturated omega-3 fatty acid eicosapentaenoic (EPA). Afterwards, fed King scallops, Pecten maximus kept at two different temperatures (15°C 20°C). Tissue-specific revealed elevated signals, EPA digestive gland, which not evident muscle tissue. comparison between indicated change At higher temperature, less unsaturated acids were detected digested but increased C-labels sugars adductor muscle. This might indicate marker due shift energy conversion from favored beta-oxidation colder carbohydrates warmth. Our approach indicates that besides accumulation markers, their additional important factors reliable interpretation linkages under change.

Language: Английский

Citations

0
Cardiac performance mirrors the passive thermal tolerance range in the oyster, Ostrea edulis DOI Creative Commons
Sandra Götze, Carl J. Reddin,

Isabel Ketelsen

et al.

Journal of Experimental Biology, Journal Year: 2024, Volume and Issue: unknown

Published: Dec. 24, 2024

Increasing frequencies of heatwaves threaten marine ectotherm species but not all alike. In exposed habitats, some rely on a higher capacity for passive tolerance at temperatures, thereby extending time-dependent survival limits. Here we assess how the involvement cardiovascular system in extended margins thermal performance curve is dependent warming rate. We study organismal and heart tissue cellular responses European oyster, Ostrea edulis, challenged by rapid (+2°C/h) gradual (+2°C/24h). Starting 22°C, cardiac activity was monitored as temperature increased, tracking curves. Hearts were collected discrete temperatures to determine cardiomyocyte metabolic profiles. Heart rate peaked lower ABT 30.5°C under than 33.9°C warming. However, oysters survived warming, with half dying (LT50) 36.9°C versus 34.8°C, respectively. As passed 30°C, rates fell profiles suddenly changed switched anaerobic metabolism survival. By 36°C, severe fluctuations Krebs-cycle-related metabolites accompanied failure. contrast, made gradual, extensive adjustments intracellular pathways, prolonging aerobic temperatures. This duration ABT, beyond which decreased sharply ceased. Our results emphasize forces tradeoff between maxima duration, via cellular-level impacts. possess adaptations that enable intertidal populations.

Language: Английский

Citations

0