Offspring sensitivity to ocean acidification changes seasonally in a coastal marine fish

Murray, Christopher S.; Malvezzi, Alex; Gobler, Christopher J.; Baumann, Hannes

doi:10.3354/meps10791

Cited by 123 publications

(110 citation statements)

References 60 publications

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“…Trait are abbreviated as embryo survival (ES), hatch length (HL), larval survival (LS), and growth rate (GR). Strip-spawning protocols maximized fertilization success, while enabling random distribution of embryos across replicates [61,63]. For each experiment, eggs from 12+ running-ripe females were gently mixed into shallow plastic dishes lined with 1-mm plastic window screening.…”

Section: Introductionmentioning

confidence: 99%

You Better Repeat It: Complex CO2 × Temperature Effects in Atlantic Silverside Offspring Revealed by Serial Experimentation

Murray

Baumann

2018

Diversity

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Concurrent ocean warming and acidification demand experimental approaches that assess biological sensitivities to combined effects of these potential stressors. Here, we summarize five CO 2 × temperature experiments on wild Atlantic silverside, Menidia menidia, offspring that were reared under factorial combinations of CO 2 (nominal: 400, 2200, 4000, and 6000 µatm) and temperature (17,20,24, and 28 • C) to quantify the temperature-dependence of CO 2 effects in early life growth and survival. Across experiments and temperature treatments, we found few significant CO 2 effects on response traits. Survival effects were limited to a single experiment, where elevated CO 2 exposure reduced embryo survival at 17 and 24 • C. Hatch length displayed CO 2 × temperature interactions due largely to reduced hatch size at 24 • C in one experiment but increased length at 28 • C in another. We found no overall influence of CO 2 on larval growth or survival to 9, 10, 15 and 13-22 days post-hatch, at 28, 24, 20, and 17 • C, respectively. Importantly, exposure to cooler (17 • C) and warmer (28 • C) than optimal rearing temperatures (24 • C) in this species did not appear to increase CO 2 sensitivity. Repeated experimentation documented substantial inter-and intra-experiment variability, highlighting the need for experimental replication to more robustly constrain inherently variable responses. Taken together, these results demonstrate that the early life stages of this ecologically important forage fish appear largely tolerate to even extreme levels of CO 2 across a broad thermal regime.

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Section: Introductionmentioning

confidence: 99%

You Better Repeat It: Complex CO2 × Temperature Effects in Atlantic Silverside Offspring Revealed by Serial Experimentation

Murray

Baumann

2018

Diversity

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“…In addition to elevated sea surface temperature (SST), a growing body of literature has focused on the impacts ocean acidification will have on marine teleosts; however, the majority of these studies have focused primarily on tropical or temperate species (Melzner et al, 2009;Munday et al, 2009a;Munday et al, 2009b;Munday et al, 2010;Munday et al, 2011;Esbaugh et al, 2012;Heuer et al, 2012;Nowicki et al, 2012;Bignami et al, 2013;Chivers et al, 2014;Munday et al, 2014;Murray et al, 2014;Pope et al, 2014). Despite projections that indicate changes in SST and partial pressure of CO 2 (Ṗ CO2 ) in seawater will impact higher latitudes faster and to a greater Is warmer better?…”

Section: Introductionmentioning

confidence: 99%

Is warmer better? Decreased oxidative damage in notothenioid fish after long-term acclimation to multiple stressors

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2014

Journal of Experimental Biology

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Antarctic fish of the suborder Notothenioidei have evolved several unique adaptations to deal with subzero temperatures. However, these adaptations may come with physiological trade-offs, such as an increased susceptibility to oxidative damage. As such, the expected environmental perturbations brought on by global climate change have the potential to significantly increase the level of oxidative stress and cellular damage in these endemic fish. Previous single stressor studies of the notothenioids have shown they possess the capacity to acclimate to increased temperatures, but the cellularlevel effects remain largely unknown. Additionally, there is little information on the ability of Antarctic fish to respond to ecologically relevant environmental changes where multiple variables change concomitantly. We have examined the potential synergistic effects that increased temperature and Ṗ CO2 have on the level of protein damage in Trematomus bernacchii, Pagothenia borchgrevinki and Trematomus newnesi, and combined these measurements with changes in total enzymatic activity of catalase (CAT) and superoxide dismutase (SOD) in order to gauge tissue-specific changes in antioxidant capacity. Our findings indicate that total SOD and CAT activity levels displayed only small changes across treatments and tissues. Short-term acclimation to decreased seawater pH and increased temperature resulted in significant increases in oxidative damage. Surprisingly, despite no significant change in antioxidant capacity, cellular damage returned to near-basal levels, and significantly decreased in T. bernacchii, after long-term acclimation. Overall, these data suggest that notothenioid fish currently maintain the antioxidant capacity necessary to offset predicted future ocean conditions, but it remains unclear whether this capacity comes with physiological trade-offs.

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“…Some report improved growth and survival in offspring (Miller et al, 2012;Murray et al, 2014), while others report no or limited capacity for transgenerational acclimation of olfactory responses or predator escape (Allan et al, 2014;Welch et al, 2014). This led to speculation that metabolic traits may have greater potential than behavioural traits for transgenerational acclimation to elevated CO 2 (Welch et al, 2014).…”

Section: Implications: Will the "Bio" In "Biophysical Larval Dispersamentioning

confidence: 99%

Paradigm Lost: Ocean Acidification Will Overturn the Concept of Larval-Fish Biophysical Dispersal

J.M

2018

Front. Mar. Sci.

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Most marine ecologists have in the past 25 years changed from supporting a passive-dispersal paradigm for larval marine fishes to supporting a biophysical-dispersal paradigm wherein the behaviour of larvae plays a central role. Research shows larvae of demersal perciform fishes have considerable swimming and orientation abilities over a major portion of their pelagic larval duration. These abilities depend on sensory function, and some recent research has indicated anthropogenic acidification of the oceans will by the end of the century result in sensory dysfunction. This could strongly alter the ability of fish larvae to orientate in the pelagic environment, to locate suitable settlement habitat, to bet-hedge, and to colonize new locations. This paper evaluates the available publications on the effects of acidification on senses and behaviours relevant to dispersal of fish early life-history stages. A large majority of studies tested CO 2 values predicted for the middle to end of the century. Larvae of fourteen families-all but two perciform-were studied. However, half of studies used Damselfishes (Pomacentridae), and except for swimming, most studies used settlement-stage larvae or later stages. In spite of these taxonomic and ontogenetic restrictions, all but two studies on sensory function (chemosensation, hearing, vision, detection of estuarine cues) found deleterious effects from acidification. The four studies on lateralization and settlement timing all found deleterious effects from acidification. No clear effect of acidification on swimming ability was found. If fish larvae cannot orientate due to sensory dysfunction, their dispersal will, in effect, conform to the passive dispersal paradigm. Modelling incorporating larval behaviour derived from empirical studies indicates that relative to active larvae, passive larvae will have less self-recruitment, higher median and mean dispersal distances, and lower settlement rates: further, bet hedging and colonization of new locations will decrease. The biophysical dispersal paradigm will be lost in theory and in fact, which is predicted to result in lower recruitment and less bet hedging for demersal, perciform fishes. More research is required to determine if the larvae of other Orders will be effected in the same way, or if warm-and cold-water fish faunas will be similarly effected.

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Offspring sensitivity to ocean acidification changes seasonally in a coastal marine fish

Abstract: Novel experiments on wild Atlantic silversides Menidia menidia suggest that parents are capable of pre-conditioning their offspring to the naturally occurring, seasonal acidification in their spawning habitat (shape depicts the annual pattern of pH mean, minimum and maximum).

Cited by 123 publications

References 60 publications

You Better Repeat It: Complex CO2 × Temperature Effects in Atlantic Silverside Offspring Revealed by Serial Experimentation

You Better Repeat It: Complex CO2 × Temperature Effects in Atlantic Silverside Offspring Revealed by Serial Experimentation

Is warmer better? Decreased oxidative damage in notothenioid fish after long-term acclimation to multiple stressors

Paradigm Lost: Ocean Acidification Will Overturn the Concept of Larval-Fish Biophysical Dispersal

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