Assessing the impact of atmospheric heatwaves on intertidal clams

The Science of The Total Environment, Journal Year: 2022, Volume and Issue: 841, P. 156744 - 156744

Published: June 15, 2022

Language: Английский

---

Transcriptomic responses reveal impaired physiological performance of the pearl oyster following repeated exposure to marine heatwaves

The Science of The Total Environment, Journal Year: 2022, Volume and Issue: 854, P. 158726 - 158726

Published: Sept. 13, 2022

Language: Английский

---

Repeated exposure to simulated marine heatwaves enhances the thermal tolerance in pearl oysters

Aquatic Toxicology, Journal Year: 2021, Volume and Issue: 239, P. 105959 - 105959

Published: Sept. 4, 2021

Language: Английский

---

Optimizing hatchery practices for genetic improvement of marine bivalves

Reviews in Aquaculture, Journal Year: 2021, Volume and Issue: 13(4), P. 2289 - 2304

Published: May 7, 2021

Abstract Aquaculture currently accounts for approximately half of all seafood produced and is the fastest growing farmed food sector globally. Marine bivalve aquaculture, farming oysters, mussels clams, represents a highly sustainable component this industry has major potential global expansion via increased efficiency, numbers of, production systems. Artificial spat propagation (i.e. settled juveniles) in hatcheries selective breeding have to offer rapid widespread gains molluscan aquaculture industry. However, bivalves unique life‐histories, genetic genomic characteristics, which present significant challenges achieving such improvement. Selection pressures experienced by larvae wild contribute drive population structure animal fitness. Similarly, domestication selection likely act on hatchery‐produced spat, full implications not been fully explored. In review, we outline key features these taxa practices applied affect phenotypic variability hatchery‐propagated stock. Alongside, compare artificial natural processes investigate possible consequences hatchery stock production. addition, identify areas investigation that need be prioritized continue advancement improvement breeding. The accessibility next‐generation sequencing technology high‐powered computational capabilities facilitate implementation novel tools programmes aquatic species. These emerging techniques represent an exciting opportunity sustainably expanding sector.

Language: Английский

---

Climate change alters the haemolymph microbiome of oysters

Marine Pollution Bulletin, Journal Year: 2021, Volume and Issue: 164, P. 111991 - 111991

Published: Jan. 20, 2021

Language: Английский

---

Transgenerational effects of intertidal environment on physiological phenotypes and DNA methylation in Pacific oysters

The Science of The Total Environment, Journal Year: 2023, Volume and Issue: 871, P. 162112 - 162112

Published: Feb. 9, 2023

Language: Английский

---

Impaired reproduction, energy reserves and dysbiosis: The overlooked consequences of heatwaves in a bivalve mollusc

Marine Pollution Bulletin, Journal Year: 2023, Volume and Issue: 193, P. 115192 - 115192

Published: June 24, 2023

Extreme events like Marine Heatwaves (MHWs) are becoming more intense, severe, and frequent, threatening benthic communities, specifically bivalves. However, the consequences of non-lethal MHWs on animals still poorly understood. Here, we exposed Manila clam Ruditapes philippinarum to MHW for 30 days provided an integrative view its effects. Our result indicated that albeit non-lethal, reduced clam's energy reserves (by reducing their hepato-somatic index), triggered antioxidant defenses (particularly in males), impaired reproduction (via production smaller oocytes females), dysbiosis digestive gland microbiota altered animals' behaviour impacting burying capacity) filtration rate. Such effects were seen also at RNA-seq (i.e. many down-regulated genes belonged reproduction) metabolome level. Interestingly, negative pronounced males than females. results show influence animal physiology multiple levels, likely fitness ecosystem services.

Language: Английский

---

Increased abundance of potentially pathogenic Vibrio and a marine heatwave co-occur with a Pacific Oyster summer mortality event

Aquaculture, Journal Year: 2024, Volume and Issue: 583, P. 740618 - 740618

Published: Jan. 25, 2024

Language: Английский

---

Differential responses of selectively bred mussels (Perna canaliculus) to heat stress—survival, immunology, gene expression and microbiome diversity

Frontiers in Physiology, Journal Year: 2024, Volume and Issue: 14

Published: Feb. 15, 2024

New Zealand’s green-lipped mussel ( Perna canaliculus ) is an ecologically and economically important species. Marine heatwaves are increasing in frequency around NZ’s coastline, these events correlated with increased stress mortality of some aquaculture This study aimed to identify general biomarkers heat P. assess whether responses differed between genetically distinct selectively bred mussels. We exposed three families mussels (families A, B C) seawater temperature regimes the laboratory: 1) a “control” treatment (ambient 12°C), 2) 26°C challenge subsequent recovery period, 3) sustained no recovery. investigated survival, immune response (hemocyte concentration viability, oxidative total antioxidant capacity), hemocyte gene expression gill microbiome during challenges. In heat-stress treatment, family A had highest survival rate (42% compared 25% 5% for C B, respectively). Gene levels significantly shifted thermal families, more dissimilar than C. Family substantially genes impacted by timepoint other while very little genes/pathways that responded stress. Genes related shock proteins (e.g., AIF1, CTSC, TOLL8, CASP9, FNTA, AHCY, CRYAB, PPIF) were upregulated all Microbiome species-richness before heat-stress, having distinctly different flora families. Microbial diversity changed similarly prolonged species Vibrio Campylobacter Our highlights use non-lethal sampling hemocytes as diagnostic tool explore mussels, predict their ocean warming. approach can potential thermotolerant candidates further selective breeding, which may increase resilience industry warming ocean.

Language: Английский

---

Extreme heatwave drives topography‐dependent patterns of mortality in a bed‐forming intertidal barnacle, with implications for associated community structure

Global Change Biology, Journal Year: 2022, Volume and Issue: 29(1), P. 165 - 178

Published: Aug. 17, 2022

Abstract Heatwave frequency and intensity will increase as climate change progresses. Intertidal sessile invertebrates, which often form thermally benign microhabitats for associated species, are vulnerable to thermal stress because they have minimal ability behaviourally thermoregulate. Understanding what factors influence the mortality of biogenic species how heatwaves might impact their provide habitat is critical. Here, we characterize community with thatched barnacle, Semibalanus cariosus (Pallass, 1788), in British Columbia (BC), Canada. Then, investigate site‐level plot‐level environmental explained variations barnacle resulting from an unprecedented regional heatwave BC, Furthermore, used a manipulative shading experiment deployed prior examine effect on survival recruitment barnacle‐associated community. We identified 50 taxa inhabiting S. beds, composition between sites. Site‐scale variables algal canopy cover did not predict mortality, but patch‐scale variation substratum orientation did, more direct solar irradiance corresponding higher mortality. The demonstrated that survival, recruitment, invertebrate diversity were under shades where temperatures lower. Associated also differed shaded non‐shaded plots, suggesting was able fully buffer acute its While provisioning by intertidal foundation important source biodiversity, these alone may be enough prevent substantial shifts following extreme heatwaves. As become frequent severe, further reduce via loss habitat, spatial impacts substantial.

Language: Английский

---