Ocean acidification induces distinct transcriptomic responses across life history stages of the sea urchin Heliocidaris erythrogramma

Molecular Ecology, Journal Year: 2020, Volume and Issue: 29(23), P. 4618 - 4636

Published: Oct. 1, 2020

Ocean acidification (OA) from seawater uptake of rising carbon dioxide emissions impairs development in marine invertebrates, particularly calcifying species. Plasticity gene expression is thought to mediate many these physiological effects, but how responses change across life history stages remains unclear. The abbreviated lecithotrophic the sea urchin Heliocidaris erythrogramma provides a valuable opportunity analyse wide range stages, including benthic, post-metamorphic juvenile. We measured transcriptional response OA H. at three cycle (embryo, larva, and juvenile) controlled breeding design. results reveal broad strikingly stage-specific impacts on transcription, changes number identity affected genes; magnitude, sign, variance their response; developmental trajectory expression. impact transcription was notably modest relation during unperturbed much smaller than genetic contributions parentage. latter result suggests that natural populations may provide an extensive reservoir resilience OA. Taken together, highlight complexity molecular OA, its substantial stage specificity, importance contextualizing pH stress light normal standing variation better understand capacity for invertebrates adapt

Language: Английский

---

Shipping live sea urchins: Effects of temperature and exposure time on survival

Aquaculture, Journal Year: 2024, Volume and Issue: 586, P. 740785 - 740785

Published: March 7, 2024

Sea urchin aquaculture could offset declines in wild fisheries. The economic feasibility of sea may depend on farmers receiving premium prices for product transported live internationally to markets or processing facilities. Research into cost-effective methods transporting urchins out water is scarce. In this study, get a baseline the temperatures experienced by air Indo-Pacific region, temperature loggers recorded 'cooler boxes' containing urchin, Tripneustes gratilla, packed and shipped seawater dry. We then examined effect time kept (6, 12, 24, 48 h) (chilled ~4 °C, cooled ~12 ambient ~27 °C) mortality, change wet weight, fitness (as measured using righting behaviour) two urchins, T. gratilla Heliocidaris erythrogramma. For both species mortality (15 days after treatment) was low (0–20%) when held up 24 h at 12 but 100% died within 15 4 °C 27 °C. Mortality increased (~60%) remained ~20% H. erythrogramma same treatment. Righting times were faster exposed than mass (fluid) lost key predictor with losing higher percentage their during longer exposure periods temperatures. frequently spawned being water. To test packing strategies that influence health, 28.6 sealed open containers drained off excreted fluid retained around urchins. None these treatments had an impact days, amount lost, activity. Our results indicate producers be able transport dry little as long are maintained Additional research limiting loss while improve survival shipping periods.

Language: Английский

---

Non-indigenous species and their realized niche in tidepools along the South-East Pacific coast

Marine Environmental Research, Journal Year: 2024, Volume and Issue: 199, P. 106541 - 106541

Published: May 7, 2024

Language: Английский

---

An intertidal life: Combined effects of acidification and winter heatwaves on a coralline alga (Ellisolandia elongata) and its associated invertebrate community

Marine Environmental Research, Journal Year: 2021, Volume and Issue: 169, P. 105342 - 105342

Published: April 20, 2021

Language: Английский

---

Ocean Acidification Amplifies the Olfactory Response to 2-Phenylethylamine: Altered Cue Reception as a Mechanistic Pathway?

Journal of Chemical Ecology, Journal Year: 2021, Volume and Issue: 47(10-11), P. 859 - 876

Published: May 20, 2021

With carbon dioxide (CO2) levels rising dramatically, climate change threatens marine environments. Due to increasing CO2 concentrations in the ocean, pH are expected drop by 0.4 units end of century. There is an urgent need understand impact ocean acidification on chemical-ecological processes. To date, extent and mechanisms which decreasing influences chemical communication unclear. Combining behaviour assays with computational chemistry, we explore function predator related cue 2-phenylethylamine (PEA) for hermit crabs (Pagurus bernhardus) current end-of-the-century oceanic pH. Living intertidal environments, face large fluctuations their habitat addition climate-change acidification. We demonstrate that dietary PEA mammals sea lampreys attractant crabs, potency levels. In order explain this increased potency, assess changes PEA's conformational charge-related properties as one potential mechanistic pathway. Using quantum calculations validated NMR spectroscopy, characterise different protonation states water. show how could affect receptor-ligand binding, using a possible model receptor (human TAAR1). Investigating pH-dependent effects olfactory perception respective behavioural response, our study advances understanding interferes sense smell thereby might essential ecological interactions ecosystems.

Language: Английский

---

Behavioural Stress Propagation in Benthic Invertebrates Caused by Acute pH Drop-Induced Metabolites

Frontiers in Marine Science, Journal Year: 2021, Volume and Issue: 8

Published: Nov. 30, 2021

Studies on pH stress in marine animals typically focus direct or species-specific aspects. We here test the hypothesis that a drop to = 7.6 indirectly affects intra- and interspecific interactions of benthic invertebrates by means chemical communication. recorded fitness-relevant behaviours small hermit crabs Diogenes pugilator , green shore Carcinus maenas harbour ragworms Hediste diversicolor response short-term drop, putative metabolites released conspecifics gilt-head sea bream Sparus aurata during 30 min acute drop. Not only did itself impair time find food cue burrowing ragworms, but similar effects were observed under exposure drop-induced metabolites. Stress from S. not its regular control metabolites, also induced avoidance responses all recipient species. Here, we confirm abrupt an abiotic stressor, has capacity trigger release which induce behavioural conspecific heterospecific individuals, can be interpreted as cost. Our findings propagated through communication warrant further research effect size impairments caused characterise their nature.

Language: Английский

---

Small-scale geographic differences in multiple-driver environmental variability can modulate contrasting phenotypic plasticity despite high levels of gene flow

The Science of The Total Environment, Journal Year: 2024, Volume and Issue: 954, P. 176772 - 176772

Published: Oct. 6, 2024

Language: Английский

---

Abiotic factors that prompt major ecological transitions: Are fish on land to escape an intolerable aquatic environment?

Functional Ecology, Journal Year: 2024, Volume and Issue: 38(12), P. 2648 - 2664

Published: Oct. 18, 2024

Abstract Colonisation of novel habitats are important events in evolution, but the factors that initially prompt such ecological transitions often unknown. The invasion land by fish is an extreme habitat transition offers opportunity to empirically investigate causes major transitions. intertidal ecotone—and rock pools particular—have been staging ground for onto land. Classic hypotheses focus on adverse abiotic conditions at low tide as instigator voluntarily stranding themselves out water, which can then lead evolution amphibious lifestyle. To test these hypotheses, we studied 54 island Guam where there various species aquatic, and terrestrial blenny fishes. We found little support expected deterioration standing (salinity, pH oxygen), were not seen be excluded from those exhibit poor (temperature, salinity pH). Hypoxia was only factor might account absence blennies certain pools. Next, experimentally measured oxygen depletion mildly highly a simulated rockpool infer proportion outside tolerable range blennies. Rock have levels within requirements most other marine fishes reported literature. conclude environment alone unlikely instigated behaviour blennies, least Guam. Instead, broad experienced suggests could primed better endure Any ecotone typified fluctuations or gradients likely key transitional and, such, location adaptive diversification. Read free Plain Language Summary this article Journal blog.

Language: Английский

---

Spatiotemporal variability of pH in coastal waters of New Brunswick (Canada) and potential consequences for oyster aquaculture

Anthropocene Coasts, Journal Year: 2023, Volume and Issue: 6(1)

Published: Aug. 25, 2023

Abstract There is a void in the knowledge of acidification status Eastern Canada's coastal waters. This crucial to evaluating threats posed marine life, particularly oyster farming, flagship New Brunswick seafood production. In this study, we measured temporal variability pH and related environmental parameters three bays Northeastern Brunswick. We also evaluated potential impact observed levels on ( Crassostrea virginica Gmelin, 1791), based available literature species’ sensitivity acidification. investigated presence inherent cycles with Fourier transform spectral filtering technique. Our results show that highly variable studied area, values ranging from 7.31 8.90. A seasonal effect was apparent, as fluctuations were set at lowest level winter when cover ice snow bay present. The analysis revealed clear semidiurnal tidal pattern pH, being inversely water summer directly it winter. subtraction all components allowed detection circadian rhythm not pace alternation between day night but rather slowly drifted so troughs occurred during full moon period. Short periodicities circa 8 6 h existed two bays. Based current C. ’s acidification, recruitment, growth, survival are unlikely be impacted by present area. However, further might overcome resilience , especially larvae produced commercial hatcheries.

Language: Английский

---

Developing in the intertidal: effects of salinity and temperature on development to the pentameral juvenile seastar, Parvulastra exigua

Marine Biology, Journal Year: 2021, Volume and Issue: 168(7)

Published: June 19, 2021

Language: Английский

---