Effects of different ionic compositions on survival and growth of Physa acuta

Liliana Zalizniak, Ben Kefford, Dayanthi Nugegoda

    Research output: Contribution to journalArticle

    24 Citations (Scopus)

    Abstract

    Most inland saline waters in southern Australia predominantly contain Na+ and Cl– as major ions. The proportions of Ca2+, Mg2+, SO42–, HCO3 – and CO3 2– in these waters somewhat vary and might influence salinity tolerance of freshwater organisms. Here the salinity stress of five ionic compositions to the freshwater snail Physa acuta Draparnaud (Gastropoda: Physidae) was compared: commercial sea salt Ocean Nature (ON), synthetic Ocean Nature (ONS) and three saline water types that are common in southern Australia (ONS but without [1]: SO4 2–, HCO3 – and CO3 2–, [2]: Ca2+, HCO3 – and CO3 2–, [3]: Ca2+, Mg2+), Milli-Q water was used as a negative control. The 96-h LC50 values for all treatments did not differ. However in prolonged sub-lethal exposures, results varied depending on the ionic composition. Growth was negative and shell strength reduced in treatments lacking Ca. Though the content of major cationic elements (Ca, Mg, Na and K) did not differ per unit dry weight of snail across the treatments, the total load of these elements per individual snail varied among treatments. Furthermore, at the sub-lethal salinities tested, 1 and 5 mS cm–1, ionic compositions had more effect on the snail’s growth than salinity. The long-term effects on freshwater animals, especially taxa with calciumbased exoskeletons, from exposure to common saline water types with low calcium concentrations will likely be greater than from exposure to saline waters with an ionic composition similar to seawater.
    Original languageEnglish
    Pages (from-to)145-156
    Number of pages12
    JournalAquatic Ecology
    Volume43
    DOIs
    Publication statusPublished - 2009

    Fingerprint

    Physa
    ionic composition
    saline water
    snails
    snail
    calcium
    salinity
    Physidae
    oceans
    water
    exoskeleton
    shell (molluscs)
    salinity tolerance
    lethal concentration 50
    salt stress
    long term effects
    Gastropoda
    sea salt
    ocean
    seawater

    Cite this

    Zalizniak, Liliana ; Kefford, Ben ; Nugegoda, Dayanthi. / Effects of different ionic compositions on survival and growth of Physa acuta. In: Aquatic Ecology. 2009 ; Vol. 43. pp. 145-156.
    @article{86d65fc7e862413bbd8fca4e4039f11f,
    title = "Effects of different ionic compositions on survival and growth of Physa acuta",
    abstract = "Most inland saline waters in southern Australia predominantly contain Na+ and Cl– as major ions. The proportions of Ca2+, Mg2+, SO42–, HCO3 – and CO3 2– in these waters somewhat vary and might influence salinity tolerance of freshwater organisms. Here the salinity stress of five ionic compositions to the freshwater snail Physa acuta Draparnaud (Gastropoda: Physidae) was compared: commercial sea salt Ocean Nature (ON), synthetic Ocean Nature (ONS) and three saline water types that are common in southern Australia (ONS but without [1]: SO4 2–, HCO3 – and CO3 2–, [2]: Ca2+, HCO3 – and CO3 2–, [3]: Ca2+, Mg2+), Milli-Q water was used as a negative control. The 96-h LC50 values for all treatments did not differ. However in prolonged sub-lethal exposures, results varied depending on the ionic composition. Growth was negative and shell strength reduced in treatments lacking Ca. Though the content of major cationic elements (Ca, Mg, Na and K) did not differ per unit dry weight of snail across the treatments, the total load of these elements per individual snail varied among treatments. Furthermore, at the sub-lethal salinities tested, 1 and 5 mS cm–1, ionic compositions had more effect on the snail’s growth than salinity. The long-term effects on freshwater animals, especially taxa with calciumbased exoskeletons, from exposure to common saline water types with low calcium concentrations will likely be greater than from exposure to saline waters with an ionic composition similar to seawater.",
    keywords = "Freshwater invertebrates, Salinity stress, Shell strength, Calcium, Cation content.",
    author = "Liliana Zalizniak and Ben Kefford and Dayanthi Nugegoda",
    year = "2009",
    doi = "10.1007/s10452-007-9144-9",
    language = "English",
    volume = "43",
    pages = "145--156",
    journal = "HYDROBIOL. BULL.",
    issn = "1380-8427",
    publisher = "Springer",

    }

    Effects of different ionic compositions on survival and growth of Physa acuta. / Zalizniak, Liliana; Kefford, Ben; Nugegoda, Dayanthi.

    In: Aquatic Ecology, Vol. 43, 2009, p. 145-156.

    Research output: Contribution to journalArticle

    TY - JOUR

    T1 - Effects of different ionic compositions on survival and growth of Physa acuta

    AU - Zalizniak, Liliana

    AU - Kefford, Ben

    AU - Nugegoda, Dayanthi

    PY - 2009

    Y1 - 2009

    N2 - Most inland saline waters in southern Australia predominantly contain Na+ and Cl– as major ions. The proportions of Ca2+, Mg2+, SO42–, HCO3 – and CO3 2– in these waters somewhat vary and might influence salinity tolerance of freshwater organisms. Here the salinity stress of five ionic compositions to the freshwater snail Physa acuta Draparnaud (Gastropoda: Physidae) was compared: commercial sea salt Ocean Nature (ON), synthetic Ocean Nature (ONS) and three saline water types that are common in southern Australia (ONS but without [1]: SO4 2–, HCO3 – and CO3 2–, [2]: Ca2+, HCO3 – and CO3 2–, [3]: Ca2+, Mg2+), Milli-Q water was used as a negative control. The 96-h LC50 values for all treatments did not differ. However in prolonged sub-lethal exposures, results varied depending on the ionic composition. Growth was negative and shell strength reduced in treatments lacking Ca. Though the content of major cationic elements (Ca, Mg, Na and K) did not differ per unit dry weight of snail across the treatments, the total load of these elements per individual snail varied among treatments. Furthermore, at the sub-lethal salinities tested, 1 and 5 mS cm–1, ionic compositions had more effect on the snail’s growth than salinity. The long-term effects on freshwater animals, especially taxa with calciumbased exoskeletons, from exposure to common saline water types with low calcium concentrations will likely be greater than from exposure to saline waters with an ionic composition similar to seawater.

    AB - Most inland saline waters in southern Australia predominantly contain Na+ and Cl– as major ions. The proportions of Ca2+, Mg2+, SO42–, HCO3 – and CO3 2– in these waters somewhat vary and might influence salinity tolerance of freshwater organisms. Here the salinity stress of five ionic compositions to the freshwater snail Physa acuta Draparnaud (Gastropoda: Physidae) was compared: commercial sea salt Ocean Nature (ON), synthetic Ocean Nature (ONS) and three saline water types that are common in southern Australia (ONS but without [1]: SO4 2–, HCO3 – and CO3 2–, [2]: Ca2+, HCO3 – and CO3 2–, [3]: Ca2+, Mg2+), Milli-Q water was used as a negative control. The 96-h LC50 values for all treatments did not differ. However in prolonged sub-lethal exposures, results varied depending on the ionic composition. Growth was negative and shell strength reduced in treatments lacking Ca. Though the content of major cationic elements (Ca, Mg, Na and K) did not differ per unit dry weight of snail across the treatments, the total load of these elements per individual snail varied among treatments. Furthermore, at the sub-lethal salinities tested, 1 and 5 mS cm–1, ionic compositions had more effect on the snail’s growth than salinity. The long-term effects on freshwater animals, especially taxa with calciumbased exoskeletons, from exposure to common saline water types with low calcium concentrations will likely be greater than from exposure to saline waters with an ionic composition similar to seawater.

    KW - Freshwater invertebrates

    KW - Salinity stress

    KW - Shell strength

    KW - Calcium

    KW - Cation content.

    U2 - 10.1007/s10452-007-9144-9

    DO - 10.1007/s10452-007-9144-9

    M3 - Article

    VL - 43

    SP - 145

    EP - 156

    JO - HYDROBIOL. BULL.

    JF - HYDROBIOL. BULL.

    SN - 1380-8427

    ER -