Mortality, condition index and cellular responses of Anadara trapezia to combined salinity and temperature stress

    Research output: Contribution to journalArticle

    3 Citations (Scopus)

    Abstract

    As a consequence of accelerated global warming, estuarine and marine bay temperature and salinity regimes will change, influencing the survival, reproduction and development of marine organisms, especially bivalve species. In order to understand their response to temperature and salinity variations the bivalve mollusc Anadara trapezia, was exposed for 56 days to twelve combinations of temperature and salinity (10 °C–20 °C–30 °C/15 ppt–20 ppt–25 ppt–30 ppt) in laboratory controlled conditions. Mortality was assessed daily over the course of the exposure. After 56 days, a suite of responses were measured in surviving organisms, including biomarkers at the molecular and cellular level; total antioxidant capacity, lipid peroxidation and lysosomal membrane destabilisation and at the whole organism level as condition index. Greater mortality occurred at temperature extremes (10 °C and 30 °C) and the lowest salinity treatment (15 ppt). Total antioxidant capacity was not significantly different but lower TOAC occurred at temperature extremes. Lipid peroxidation was also significantly higher at temperature extremes while salinity had no effect. Lysosomal membrane destabilisation was influenced by temperature and salinity with lysosomal membrane destabilisation increasing at temperature extremes and as salinity decreased. As TOAC decreased, the trends were for lipid peroxidation and lysosomal membrane destabilisation to increase and condition index and survival to decrease. The results demonstrate that A. trapezia can tolerate changes in either salinity or temperature but deleterious biochemical changes, high mortality and reduced condition occur when these vary in unison at temperature extremes and low salinity.

    Original languageEnglish
    Pages (from-to)172-179
    Number of pages8
    JournalJournal of Experimental Marine Biology and Ecology
    Volume497
    DOIs
    Publication statusPublished - Dec 2017

    Fingerprint

    Anadara
    salinity
    mortality
    temperature
    membrane
    lipid peroxidation
    lipid
    antioxidant
    bivalve
    Bivalvia
    organisms
    index
    antioxidants
    mollusc
    global warming
    biomarker
    biomarkers

    Cite this

    @article{d375fcec50f94064a46048f2d9efdde7,
    title = "Mortality, condition index and cellular responses of Anadara trapezia to combined salinity and temperature stress",
    abstract = "As a consequence of accelerated global warming, estuarine and marine bay temperature and salinity regimes will change, influencing the survival, reproduction and development of marine organisms, especially bivalve species. In order to understand their response to temperature and salinity variations the bivalve mollusc Anadara trapezia, was exposed for 56 days to twelve combinations of temperature and salinity (10 °C–20 °C–30 °C/15 ppt–20 ppt–25 ppt–30 ppt) in laboratory controlled conditions. Mortality was assessed daily over the course of the exposure. After 56 days, a suite of responses were measured in surviving organisms, including biomarkers at the molecular and cellular level; total antioxidant capacity, lipid peroxidation and lysosomal membrane destabilisation and at the whole organism level as condition index. Greater mortality occurred at temperature extremes (10 °C and 30 °C) and the lowest salinity treatment (15 ppt). Total antioxidant capacity was not significantly different but lower TOAC occurred at temperature extremes. Lipid peroxidation was also significantly higher at temperature extremes while salinity had no effect. Lysosomal membrane destabilisation was influenced by temperature and salinity with lysosomal membrane destabilisation increasing at temperature extremes and as salinity decreased. As TOAC decreased, the trends were for lipid peroxidation and lysosomal membrane destabilisation to increase and condition index and survival to decrease. The results demonstrate that A. trapezia can tolerate changes in either salinity or temperature but deleterious biochemical changes, high mortality and reduced condition occur when these vary in unison at temperature extremes and low salinity.",
    keywords = "Anadara trapezia, Antioxidant capacity, Lipid peroxidation, Lysosomal membrane destabilisation, Sydney cockles",
    author = "A.M. Taylor and W.A. Maher and R.P. Ubrihien",
    note = "cited By 0",
    year = "2017",
    month = "12",
    doi = "10.1016/j.jembe.2017.09.023",
    language = "English",
    volume = "497",
    pages = "172--179",
    journal = "Journal of Experimental Marine Biology and Ecology",
    issn = "0022-0981",
    publisher = "Elsevier",

    }

    TY - JOUR

    T1 - Mortality, condition index and cellular responses of Anadara trapezia to combined salinity and temperature stress

    AU - Taylor, A.M.

    AU - Maher, W.A.

    AU - Ubrihien, R.P.

    N1 - cited By 0

    PY - 2017/12

    Y1 - 2017/12

    N2 - As a consequence of accelerated global warming, estuarine and marine bay temperature and salinity regimes will change, influencing the survival, reproduction and development of marine organisms, especially bivalve species. In order to understand their response to temperature and salinity variations the bivalve mollusc Anadara trapezia, was exposed for 56 days to twelve combinations of temperature and salinity (10 °C–20 °C–30 °C/15 ppt–20 ppt–25 ppt–30 ppt) in laboratory controlled conditions. Mortality was assessed daily over the course of the exposure. After 56 days, a suite of responses were measured in surviving organisms, including biomarkers at the molecular and cellular level; total antioxidant capacity, lipid peroxidation and lysosomal membrane destabilisation and at the whole organism level as condition index. Greater mortality occurred at temperature extremes (10 °C and 30 °C) and the lowest salinity treatment (15 ppt). Total antioxidant capacity was not significantly different but lower TOAC occurred at temperature extremes. Lipid peroxidation was also significantly higher at temperature extremes while salinity had no effect. Lysosomal membrane destabilisation was influenced by temperature and salinity with lysosomal membrane destabilisation increasing at temperature extremes and as salinity decreased. As TOAC decreased, the trends were for lipid peroxidation and lysosomal membrane destabilisation to increase and condition index and survival to decrease. The results demonstrate that A. trapezia can tolerate changes in either salinity or temperature but deleterious biochemical changes, high mortality and reduced condition occur when these vary in unison at temperature extremes and low salinity.

    AB - As a consequence of accelerated global warming, estuarine and marine bay temperature and salinity regimes will change, influencing the survival, reproduction and development of marine organisms, especially bivalve species. In order to understand their response to temperature and salinity variations the bivalve mollusc Anadara trapezia, was exposed for 56 days to twelve combinations of temperature and salinity (10 °C–20 °C–30 °C/15 ppt–20 ppt–25 ppt–30 ppt) in laboratory controlled conditions. Mortality was assessed daily over the course of the exposure. After 56 days, a suite of responses were measured in surviving organisms, including biomarkers at the molecular and cellular level; total antioxidant capacity, lipid peroxidation and lysosomal membrane destabilisation and at the whole organism level as condition index. Greater mortality occurred at temperature extremes (10 °C and 30 °C) and the lowest salinity treatment (15 ppt). Total antioxidant capacity was not significantly different but lower TOAC occurred at temperature extremes. Lipid peroxidation was also significantly higher at temperature extremes while salinity had no effect. Lysosomal membrane destabilisation was influenced by temperature and salinity with lysosomal membrane destabilisation increasing at temperature extremes and as salinity decreased. As TOAC decreased, the trends were for lipid peroxidation and lysosomal membrane destabilisation to increase and condition index and survival to decrease. The results demonstrate that A. trapezia can tolerate changes in either salinity or temperature but deleterious biochemical changes, high mortality and reduced condition occur when these vary in unison at temperature extremes and low salinity.

    KW - Anadara trapezia

    KW - Antioxidant capacity

    KW - Lipid peroxidation

    KW - Lysosomal membrane destabilisation

    KW - Sydney cockles

    UR - http://www.scopus.com/inward/record.url?scp=85030708125&partnerID=8YFLogxK

    UR - http://www.mendeley.com/research/mortality-condition-index-cellular-responses-anadara-trapezia-combined-salinity-temperature-stress

    U2 - 10.1016/j.jembe.2017.09.023

    DO - 10.1016/j.jembe.2017.09.023

    M3 - Article

    VL - 497

    SP - 172

    EP - 179

    JO - Journal of Experimental Marine Biology and Ecology

    JF - Journal of Experimental Marine Biology and Ecology

    SN - 0022-0981

    ER -