scholarly journals Temperature but not ocean acidification affects energy metabolism and enzyme activities in the blue mussel, Mytilus edulis

2021 ◽  
Author(s):  
Omera B. Matoo ◽  
Gisela Lannig ◽  
Christian Bock ◽  
Inna M. Sokolova
Keyword(s):  
Energy Metabolism ◽  
Ocean Acidification ◽  
Mytilus Edulis ◽  
Enzyme Activities ◽  
Blue Mussel

scholarly journals Temperature but not ocean acidification affects energy metabolism and enzyme activities in the blue mussel, Mytilus edulis

2020 ◽  
Author(s):  
Omera B. Matoo ◽  
Gisela Lannig ◽  
Christian Bock ◽  
Inna M. Sokolova
Keyword(s):  
Ocean Acidification ◽  
Mytilus Edulis ◽  
Enzyme Activities ◽  
Elevated Temperatures ◽  
Gulf Of Maine ◽  
Blue Mussel ◽  
Hot Spot ◽  
List Type ◽  
Intertidal Zones ◽  
Marine Habitats

SUMMARYIn mosaic marine habitats such as intertidal zones ocean acidification (OA) is exacerbated by high variability of pH, temperature, and biological CO2 production. The non-linear interactions among these drivers can be context-specific and their effect on organisms in these habitats remains largely unknown, warranting further investigation.We were particularly interested in Mytilus edulis (the blue mussel) from intertidal zones of Gulf of Maine (GOM), USA for this study. GOM is a hot spot of global climate change (average SST increasing by > 0.2 °C y-1) with > 60% decline in mussel population over the past 40 years.Here, we utilize bioenergetic underpinnings to identify limits of stress tolerance in M. edulis from GOM exposed to warming and OA. We have measured whole-organism oxygen consumption rates and metabolic biomarkers in mussels exposed to control and elevated temperatures (10 vs. 15 °C) and moderate PCO2 levels (~ 400 vs. 800 μatm).Our study demonstrates that adult M. edulis from GOM are metabolically resilient to the moderate OA scenario but responsive to warming as seen in changes in metabolic rate, energy reserves, metabolite profiles and enzyme activities.Our results are in agreement with recent literature that OA scenarios for the next 100-300 years do not affect this species, possibly as a consequence of maintaining its in vivo acid-base balance.

scholarly journals Ocean acidification alters the material properties of Mytilus edulis shells

2015 ◽  
Vol 12 (103) ◽  
pp. 20141227 ◽  
Author(s):  
Susan C. Fitzer ◽  
Wenzhong Zhu ◽  
K. Elizabeth Tanner ◽  
Vernon R. Phoenix ◽  
Nicholas A. Kamenos ◽  
...  
Keyword(s):  
Ocean Acidification ◽  
Mytilus Edulis ◽  
Material Properties ◽  
Blue Mussel ◽  
Global Ocean ◽  
Mussel Shell ◽  
Multiple Stressor ◽  
Mussel Shells ◽  
Increasing Temperature ◽  
The Impact

Ocean acidification (OA) and the resultant changing carbonate saturation states is threatening the formation of calcium carbonate shells and exoskeletons of marine organisms. The production of biominerals in such organisms relies on the availability of carbonate and the ability of the organism to biomineralize in changing environments. To understand how biomineralizers will respond to OA the common blue mussel, Mytilus edulis , was cultured at projected levels of p CO 2 (380, 550, 750, 1000 µatm) and increased temperatures (ambient, ambient plus 2°C). Nanoindentation (a single mussel shell) and microhardness testing were used to assess the material properties of the shells. Young's modulus ( E ), hardness ( H ) and toughness ( K IC ) were measured in mussel shells grown in multiple stressor conditions. OA caused mussels to produce shell calcite that is stiffer (higher modulus of elasticity) and harder than shells grown in control conditions. The outer shell (calcite) is more brittle in OA conditions while the inner shell (aragonite) is softer and less stiff in shells grown under OA conditions. Combining increasing ocean p CO 2 and temperatures as projected for future global ocean appears to reduce the impact of increasing p CO 2 on the material properties of the mussel shell. OA may cause changes in shell material properties that could prove problematic under predation scenarios for the mussels; however, this may be partially mitigated by increasing temperature.

scholarly journals Effects of ocean acidification on the immune response of the blue mussel Mytilus edulis

2008 ◽  
Vol 2 ◽  
pp. 67-74 ◽  
Author(s):  
R Bibby ◽  
S Widdicombe ◽  
H Parry ◽  
J Spicer ◽  
R Pipe
Keyword(s):  
Immune Response ◽  
Ocean Acidification ◽  
Mytilus Edulis ◽  
Blue Mussel

Hypoxia aggravates the effects of ocean acidification on the physiological energetics of the blue mussel Mytilus edulis

2019 ◽  
Vol 149 ◽  
pp. 110538 ◽  
Author(s):  
Huaxin Gu ◽  
Yueyong Shang ◽  
Jeff Clements ◽  
Sam Dupont ◽  
Ting Wang ◽  
...  
Keyword(s):  
Ocean Acidification ◽  
Mytilus Edulis ◽  
Blue Mussel ◽  
Physiological Energetics

Impact of ocean acidification on antimicrobial activity in gills of the blue mussel (Mytilus edulis)

2016 ◽  
Vol 55 ◽  
pp. 452-459 ◽  
Author(s):  
B. Hernroth ◽  
S. Baden ◽  
H. Tassidis ◽  
K. Hörnaeus ◽  
J. Guillemant ◽  
...  
Keyword(s):  
Antimicrobial Activity ◽  
Ocean Acidification ◽  
Mytilus Edulis ◽  
Blue Mussel

scholarly journals Effect of ocean acidification on the early life stages of the blue mussel (<I>Mytilus edulis</I>)

2010 ◽  
Vol 7 (2) ◽  
pp. 2927-2947 ◽  
Author(s):  
F. Gazeau ◽  
J.-P. Gattuso ◽  
C. Dawber ◽  
A. E. Pronker ◽  
F. Peene ◽  
...  
Keyword(s):  
Ocean Acidification ◽  
Mytilus Edulis ◽  
Early Life ◽  
Blue Mussel ◽  
Negative Impact ◽  
Shell Growth ◽  
Life Stages ◽  
Early Life Stages ◽  
Environmental Disturbances ◽  
Hatching Rates

Abstract. Several experiments have shown a decrease of growth and calcification of organisms at decreased pH levels but relatively few studies have focused on early life stages which are believed to be more sensitive to environmental disturbances such as hypercapnia. Here, we present experimental data demonstrating that the growth of planktonic mussel (Mytilus edulis) larvae is significantly affected by a decrease of pH to a level expected for the end of the century. Even though there was no significant effect of a 0.25–0.34 pH unit decrease on hatching and mortality rates during the first 2 days of development nor during the following 13-day period prior to settlement, final shells were, respectively, 4.5±1.3 and 6.0±2.3% smaller at pHNBS~7.8 than at a control pHNBS of ~8.1. Moreover, a decrease of 12.0±5.4% of shell thickness was observed. More severe impacts were found with a decrease of ~0.5 pHNBS unit during the first 2 days of development which could be attributed to a decrease of calcification due toslight undersaturation of seawater with respect to aragonite. Indeed, important effects on both hatching and D-veliger shell growth were found. Hatching rates were 24±4% lower while D-veliger shells were 12.7±0.9% smaller at pHNBS~7.6 than at a control pHNBS of ~8.1. Although these results show that blue mussel larvae are still able to develop a shell in seawater undersaturated with respect to aragonite, decreases of hatching rates and shell growth suggest a negative impact of ocean acidification on the future survival of bivalve populations potentially leading to significant ecological and economical losses.

scholarly journals The impact of ocean acidification on the byssal threads of the blue mussel (Mytilus edulis)

PLoS ONE ◽  
2018 ◽  
Vol 13 (10) ◽  
pp. e0205908 ◽  
Author(s):  
Grant Dickey ◽  
Brian M. Preziosi ◽  
Charles T. Clark ◽  
Timothy J. Bowden
Keyword(s):  
Ocean Acidification ◽  
Mytilus Edulis ◽  
Blue Mussel ◽  
The Impact

scholarly journals Differential Segregation Patterns of Sperm Mitochondria in Embryos of the Blue Mussel (Mytilus edulis)

Genetics ◽  
2004 ◽  
Vol 166 (2) ◽  
pp. 883-894
Author(s):  
Liqin Cao ◽  
Ellen Kenchington ◽  
Eleftherios Zouros
Keyword(s):  
Mitochondrial Dna ◽  
Mytilus Edulis ◽  
Blue Mussel ◽  
Uniparental Inheritance ◽  
Male Gonad ◽  
Doubly Uniparental Inheritance ◽  
Organelle Genomes ◽  
Somatic Tissues ◽  
Tight Linkage ◽  
Mitotracker Green

Abstract In Mytilus, females carry predominantly maternal mitochondrial DNA (mtDNA) but males carry maternal mtDNA in their somatic tissues and paternal mtDNA in their gonads. This phenomenon, known as doubly uniparental inheritance (DUI) of mtDNA, presents a major departure from the uniparental transmission of organelle genomes. Eggs of Mytilus edulis from females that produce exclusively daughters and from females that produce mostly sons were fertilized with sperm stained with MitoTracker Green FM, allowing observation of sperm mitochondria in the embryo by epifluorescent and confocal microscopy. In embryos from females that produce only daughters, sperm mitochondria are randomly dispersed among blastomeres. In embryos from females that produce mostly sons, sperm mitochondria tend to aggregate and end up in one blastomere in the two- and four-cell stages. We postulate that the aggregate eventually ends up in the first germ cells, thus accounting for the presence of paternal mtDNA in the male gonad. This is the first evidence for different behaviors of sperm mitochondria in developing embryos that may explain the tight linkage between gender and inheritance of paternal mitochondrial DNA in species with DUI.

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