Effects of osmotic and thermal shock on the invasive aquatic mudsnail Potamopyrgus antipodarum: mortality and physiology under stressful conditions

Paolucci, Esteban Marcelo; Thuesen, Erik V.

doi:10.3897/neobiota.54.39465

Cited by 13 publications

(5 citation statements)

References 42 publications

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“…Presumably, as salts become more readily available in the more saline waters, less energy is expended to osmoregulate. This trend is commensurate with studies in Gammarus Fabricius, 1775 (Sutcliffe, 1984), snails (McMahon and Russell-Hunter, 1978;Paolucci and Thuesen, 2020), cutthroat trout (Oncorhynchus clarkii Richardson, 1836) (Morgan and Iwama, 1999), and common carp (Cyprinus carpio Linnaeus, 1758) (de Boeck et al, 2000). However, decreasing energetic costs with increasing salinity was not observed in naiads reared in 5,020 and 9,921 μS cm −1 waters.…”

Section: Discussionsupporting

confidence: 87%

Physiological and life history responses in a mayfly (Callibaetis floridanus) inhabiting ponds with saltwater intrusion

2023

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Freshwater salinity varies in natural systems and plays a role in species distribution. Anthropogenic alterations to freshwater salinity regimes include sea level rise and subsequent intrusion of saline waters to inland habitats. While mayflies are generalized to be sensitive to increasing salinity, we still know remarkably little about the physiological processes (and their plasticity) that determine the performance of species in a changing world. Here, we explored life-history outcomes and physiological plasticity in a population of Callibaetis floridanus (Ephemeroptera: Baetidae) from a coastal pond that routinely experiences saltwater intrusion. We reared naiads from egg hatch to adulthood across a gradient of increasing salinities (113, 5,020, 9,921 μS/cm). Radiotracer flux studies (22Na, 35SO4, and 45Ca) were conducted in naiads reared at each salinity, revealing a positive association between ionic concentration and uptake rates. However, the influence of rearing history on ionic influx rates was apparent when naiads were transferred from their respective rearing water to the other experimental conditions. For example, we observed that naiads reared in the low salinity treatment (113 μS/cm) had 10.8-fold higher Na uptake rates than naiads reared at 9,921 μS/cm and transferred to 113 μS/cm. Additionally, naiads acclimated to the higher salinity water exhibited reduced uptake in ion-rich water relative to those reared in more dilute conditions (e.g., in 9,921 μS/cm water, 113 and 5,020 μS/cm acclimated naiads had 1.5- and 1.1-fold higher Na uptake rates than 9,921 μS/cm acclimated naiads, respectively). We found no significant changes in survival (80 ± 4.4%, mean ± s.e.m.) or naiad development time (24 ± 0.3 days, mean ± s.e.m.) across these treatments but did observe a 27% decrease in subimago female body weight in the most dilute condition. This reduction in female weight was associated with higher oxygen consumption rates in naiads relative to the other rearing conditions. Collectively, these data suggests that saline adapted C. floridanus may be more energetically challenged in dilute conditions, which differs from previous observations in other mayfly species.

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Section: Discussionsupporting

confidence: 87%

Physiological and life history responses in a mayfly (Callibaetis floridanus) inhabiting ponds with saltwater intrusion

2023

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“…Therefore, animals previously exposed to high conductivity started the exposure to cadmium with a behavioral disorder, which may be indicative of its physiological impairment. This is supported by the study by Paolucci and Thuesen ( 2020 ), who found a low metabolic rate and a decline in enzymatic activities related to aerobic and anaerobic metabolism in individuals of P. antipodarum exposed to a high salinity. This may help explain the high mortality found in control and cadmium-treated stressed animals during cadmium exposure.…”

Section: Discussionsupporting

confidence: 62%

“…In fact, declines of energy reserves and behavioral impartments are indicators of salinity stress in bivalves (Bertrand et al 2017 ). The exposure of P. antipodarum to osmotic stress caused a decline of metabolic rates, enzymatic activities, and a reduction in the percentage of active snails; finally, at high salinities, this species undergoes a suppression of aerobic metabolism (Paolucci and Thuesen 2020 ). In the present study, in the absence of cadmium (control groups), individuals of P. antipodarum exposed to high salinity needed longer time to start activity than control non-stressed animals.…”

Section: Discussionmentioning

confidence: 99%

Previous stress causes a contrasting response to cadmium toxicity in the aquatic snail Potamopyrgus antipodarum: lethal and behavioral endpoints

Alonso

2023

Environ Sci Pollut Res

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In aquatic ecosystems, animals are often exposed to a combination of stressors, including both natural and anthropogenic factors. Combined stressors may have additive or interactive effects on animals, either magnifying or reducing the effects caused by each stressor alone. Therefore, standardized bioassays can lead to overestimations or underestimations of the risk of toxicants if natural stressors are not bear in mind. The inclusion of natural stress in laboratory bioassays may help to extrapolate the laboratory results to ecosystems. This study assesses the effects of successive exposure to two sources of stress (high water conductivity and cadmium toxicity) on the behavior and survival of the aquatic snail Potamopyrgus antipodarum (Tateidae, Mollusca). I conducted a bioassay consisting on exposure to high conductivity (5000 mg NaCl/L, 7 days), followed by exposure to cadmium (0.03, 0.125, and 0.25 mg Cd/L for 7 days) and by a post-exposure period (7 days). Mortality, inactivity, and the time to start activity of active animals were monitored in each animal. In general, cadmium lethality was higher in animals previously undergoing high conductivity than in non-stressed ones. Previously stressed animals showed longer time to start activity, with a noticeable effect at the two highest cadmium concentrations. Animals submitted to the two highest cadmium concentration both, stressed and non-stressed, showed a moderate recovery during the post-exposure period. It is concluded that previous stress caused a worsening of the cadmium toxicity on the aquatic snail Potamopyrgus antipodarum, which is especially noticeable for mortality. However, there was no interactive effect between cadmium and conductivity on snail activity, which may be indicative of recovery after cadmium exposure regardless the previous stress suffered by the snails.

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“…However, these ideas have also been challenged by studies demonstrating that very successful invasive species can have high environmental tolerances and low genetic and phenotypic diversity (Levri et al . 2014; Paolucci & Thuesen 2020; Rabushko et al . 2020).…”

Section: Introductionmentioning

confidence: 99%

“…In particular, wide thermal and physiological responses allow invasive bivalves to compensate and tolerate environmental changes (Fanslow et al 2001;Tyner et al 2015). However, these ideas have also been challenged by studies demonstrating that very successful invasive species can have high environmental tolerances and low genetic and phenotypic diversity (Levri et al 2014;Paolucci & Thuesen 2020;Rabushko et al 2020).…”

Section: Introductionmentioning

confidence: 99%

Metabolic response to increasing environmental temperature in the invasive mussel Limnoperna fortunei

2022

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Plasticity and variability of morphological and physiological traits are common characteristics that allow invasive species to survive, establish and spread to new environments. In order to study the metabolic response of the invasive mussel Limnoperna fortunei (Dunker) (Mytilidae), which has spread through South America and Asia, oxygen consumption was measured under three different acclimation temperatures (18, 22 and 27°C). After an acclimation period of at least 7 days, oxygen consumption was measured and analysed as functions of length and mass. Biochemical composition was also investigated on specimens collected under natural conditions. Environmental scanning electron microscopy determined that the elemental composition and crystalline structure of the shells were normal as described for L. fortunei previously. Average oxygen consumption per mussel was 1.63 ± 0.12 μmol O2 h−1 for an average ash‐free dry weight (AFDW) of 58.7 ± 3.0 mg. The average standard metabolic rate (SMR) per mussel was 14.94 ± 1.30, 30.04 ± 3.38, and 47.10 ± 3.54 μmol O2 gAFDW−1 h−1, at 18, 22 and 27°C, respectively. Significant higher SMR values were recorded at 27°C than at lower temperatures. This metabolic response allows L. fortunei to survive, reproduce and spread across a wide range of habitats, including tropical and subtropical environments in South America.

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Effects of osmotic and thermal shock on the invasive aquatic mudsnail Potamopyrgus antipodarum: mortality and physiology under stressful conditions

Cited by 13 publications

References 42 publications

Physiological and life history responses in a mayfly (Callibaetis floridanus) inhabiting ponds with saltwater intrusion

Physiological and life history responses in a mayfly (Callibaetis floridanus) inhabiting ponds with saltwater intrusion

Previous stress causes a contrasting response to cadmium toxicity in the aquatic snail Potamopyrgus antipodarum: lethal and behavioral endpoints

Metabolic response to increasing environmental temperature in the invasive mussel Limnoperna fortunei

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