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

Balogh, Regina; Byrne, Maria

doi:10.1007/s00227-021-03902-2

Cited by 8 publications

(7 citation statements)

References 47 publications

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“…In recent years, the impact of changes in salinity on marine organisms has attracted more and more attention. There have been studies about the effects of changes in salinity on the growth, development, life activities, physiological processes and metabolic physiology of marine organisms (Balogh & Byrne, 2021; Zhang, Hou, et al, 2020; Garçon et al, 2021; Tanner et al, 2019; Sun et al, 2021).…”

Section: Introductionmentioning

confidence: 99%

Immune and antioxidant responses of pearl oysterPinctada maximaexposed to acute salinity stress

Wei

Chen

Deng

et al. 2022

Aquaculture Research

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Salinity change is a frequently occurring abiotic stress that dramatically affects the physiological and biochemical factors of marine bivalve molluscs. In this study, a total of 140 individuals of Pinctada maxima were collected from Weizhou Island (Beihai, China) for 48‐h acute salinity stress. Immune enzymes (phenoloxidase [POX], lysozyme [LZM] and alkaline phosphatase [ALP]), antioxidant enzymes and substances (superoxide dismutase [SOD] and reduced glutathione [GSH]) were measured at different times after acute low‐salinity (salinity 20) and high‐salinity (salinity 40) stress with a salinity of 30 as the control group to assess the effects of acute salinity stress on immune and antioxidant responses of P. maxima. The results showed that the total protein (TP), GSH, SOD, POX, LZM and ALP of silver‐lipped pearl oyster P. maxima were significantly influenced by the different salinity gradients and duration of salinity stress (p < 0.05). The TP, SOD, LZM and GSH of P. maxima recovered to the same level of the control group at 48 h after acute high‐salinity stress (salinity 40, p > 0.05), while only TP and LZM in the low‐salinity group (salinity 20) recovered to the same level of the control group at 48 h (p > 0.05), indicating that P. maxima has a stronger tolerance to high salinity (40) than low salinity (20). The study provides references for exploring the antioxidant and immune response mechanism to salinity stress in P. maxima and its cultivation.

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Section: Introductionmentioning

confidence: 99%

Immune and antioxidant responses of pearl oysterPinctada maximaexposed to acute salinity stress

Wei

Chen

Deng

et al. 2022

Aquaculture Research

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“…Predation and sublethal injury can be high (Deaker et al, 2021; Keesing et al, 2018; Keesing & Halford, 1992a, 1992b; Wilmes et al, 2019), they may succumb to disease (Zann et al, 1987), and their CCA food may decline in warm conditions (Lang et al, 2023; Short et al, 2015). These threats may be exacerbated by heatwaves in conjunction with other climate change stressors as seen for the early juvenile stages of other species (Balogh & Byrne, 2021; Wolfe et al, 2013). A recent study shows that COTS‐eating predatory crabs occur in coral rubble and in the laboratory consumed five juveniles a day (Desbiens et al, 2023).…”

Section: Discussionmentioning

confidence: 99%

“…Among many factors such as predation (Desbiens et al, 2023) and reduced cover of crustose coralline algae (CCA) due to bleaching (Lang et al, 2023), juvenile survival would depend on their resistance to heatwave anomalies, which are projected to increase in incidence and duration. Many studies of adult and juvenile benthic marine invertebrates show tolerance to warm conditions for short pulses of heat stress (days/weeks), but deleterious effects and mortality occur the longer (weeks/months) warm conditions remain (Balogh & Byrne, 2021;Byrne, 2011;Hughes et al, 2017Hughes et al, , 2018Wolfe et al, 2013). We tested the response of herbivorous juvenile stage of COTS to habitat warming in two experiments.…”

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confidence: 99%

Juvenile waiting stage crown‐of‐thorns sea stars are resilient in heatwave conditions that bleach and kill corals

Byrne,

Deaker,

Gibbs

et al. 2023

Global Change Biology

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The juveniles of predatory sea stars can remain in their recruitment–nursery habitat for some time before their ontogenetic shift to the adult habitat and diet. These small juveniles are vulnerable to a range of factors with their sensitivity amplified by climate change‐driven ocean warming. We investigate the thermal tolerance of the waiting stage herbivorous juveniles of the keystone coral predator, the crown‐of‐thorns sea star (COTS, Acanthaster sp.), in context with the degree heating weeks (DHW) model that predicts coral bleaching and mass mortality. In temperature treatments ranging from +1 to 3°C in prolonged heatwave acclimation conditions, the juveniles exhibited ~100% survival in DHW scenarios that trigger coral bleaching (4 DHW), resulting in mass mortality of corals (8 DHW) and extreme conditions well beyond those that kill corals (12 DHW). This indicates that herbivorous juvenile COTS are far more resistant to heatwave conditions than the coral prey of the adults. The juveniles exhibited higher activity (righting) and metabolic rate after weeks in increased temperature. In separate acute temperature experiments, the upper thermal limit of the juveniles was 34–36°C. In a warming world, juvenile COTS residing in their coral rubble nursery habitat will benefit from an increase in the extent of this habitat due to coral mortality. The juveniles have potential for long‐term persistence as herbivores as they wait for live coral to recover before becoming coral predators, thereby serving as a proximate source of COTS outbreaks on reefs already in a tenuous state due to climate change.

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“…For the past few years, more and more attention has been paid to the effects of salinity changes on marine organisms. Many studies have shown that salinity changes have a great influence on the life activities, physiological processes, growth and development, molecular response, and metabolic physiology of shellfish (Ertl et al, 2019;Tanner et al, 2019;Zhang H. et al, 2020;Balogh and Byrne, 2021;Garcon et al, 2021;Li et al, 2021;Ni et al, 2021;Sun et al, 2021).…”

Section: Introductionmentioning

confidence: 99%

Transcriptomic Signatures of Pearl Oyster Pinctada Maxima in Response to Acute Salinity Stress

et al. 2022

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Acute salinity stress can impact many physiological processes of marine shellfish. The responses of Pinctada maxima to salinity stress, especially the osmotic pressure regulation and immune response, are of great significance to health. To investigate the molecular changes in response to acute salinity stress, the pearl oysters were transferred from 30 ppt (C) to 40 ppt (HS) and 20 ppt (LS) for 12 h, and the transcriptome analysis was conducted on the gills. Compared to the control, there were 6613 (3253 up-regulated and 3360 down-regulated) differentially expressed genes (DEGs), 4395 (2180 up-regulated and 2215 down-regulated) DEGs observed in HS and LS, respectively. The related molecular biological processes and potential functions were explored from enrichment analysis. A total of 332 KEGG pathways (including 1514 genes) and 308 KEGG pathways (including 731 genes) were enriched in C vs. HS and C vs. LS, respectively. In addition, there are 1559 DEGs shared by C vs. HS group and C vs. LS group, and the results of the KEGG function annotation showed that 7 DEGs were involved in membrane transport, and 34 DEGs were involved in the immune system. The correlation network for expression of genes shows that the expression of 3 genes was significantly correlated with each other in membrane transport, and there were significant correlations between the expression of 27 genes in immune response. The results of this study will be of great value in understanding the molecular basis of salinity stress adaptation in the pearl oyster P. maxima.

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

Cited by 8 publications

References 47 publications

Immune and antioxidant responses of pearl oysterPinctada maximaexposed to acute salinity stress

Immune and antioxidant responses of pearl oysterPinctada maximaexposed to acute salinity stress

Juvenile waiting stage crown‐of‐thorns sea stars are resilient in heatwave conditions that bleach and kill corals

Transcriptomic Signatures of Pearl Oyster Pinctada Maxima in Response to Acute Salinity Stress

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