Differences in heat tolerance plasticity between supratidal and intertidal snails indicate complex responses to microhabitat temperature variation

Brahim, Amalina; Marshall, David J.

doi:10.1016/j.jtherbio.2020.102620

Cited by 16 publications

(1 citation statement)

References 37 publications

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“…Another fundamental shortcoming of thermal tolerance studies that focus strictly on LT 50 or CT max values stems from the fact that the thermal tolerance one obtains in laboratory studies is influenced by many factors in addition to genetically based adaptive differences in tolerance among species or populations. Factors influencing LT 50 and CT max include: ( i ) acclimatization or acclimation state, including prior exposure to heating conditions that may have promoted heat‐hardening (Wallis, 1975; Brahim & Marshall, 2020; Moyen et al ., 2020 b ; Moyen, Somero & Denny, 2020 c ); ( ii ) rate of heating during the tolerance measurement (Nguyen et al ., 2011; Moyen, Somero & Denny, 2019; Cereja, 2020); ( iii ) whether the thermal tolerance studies were performed in sea water or in air (Bjelde & Todgham, 2013; Dowd & Somero, 2013; Huang et al ., 2015); ( iv ) the humidity of the atmosphere in aerial experiments (Miller, Harley & Denny, 2009); ( v ) the duration of the exposure to high temperatures; ( vi ) the length of the post‐heat‐shock recovery period over which survival is monitored (Dowd & Somero, 2013); and, ( vii ) the specific criteria for defining CT max (Dowd & Somero, 2013). Variation in these and other factors in experimental protocols often precludes meaningful cross‐study comparisons (see Bates & Morley, 2020).…”

Section: Adaptive Variation In Thermal Responses Of Intertidal Mollus...mentioning

confidence: 99%

An integrated, multi‐level analysis of thermal effects on intertidal molluscs for understanding species distribution patterns

et al. 2021

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Elucidating the physiological mechanisms that underlie thermal stress and discovering how species differ in capacities for phenotypic acclimatization and evolutionary adaptation to this stress is critical for understanding current latitudinal and vertical distribution patterns of species and for predicting their future state in a warming world. Such mechanistic analyses require careful choice of study systems (species and temperature‐sensitive traits) and design of laboratory experiments that reflect the complexities of in situ conditions. Here, we critically review a wide range of studies of intertidal molluscs that provide mechanistic accounts of thermal effects across all levels of biological organization – behavioural, organismal, organ level, cellular, molecular, and genomic – and show how temperature‐sensitive traits govern distribution patterns and capacities for coping with thermal stress. Comparisons of congeners from different thermal habitats are especially effective means for identifying adaptive variation. We employ these mechanistic analyses to illustrate how species differ in the severity of threats posed by rising temperature. Counterintuitively, we show that some of the most heat‐tolerant species may be most threatened by increases in temperatures because of their small thermal safety margins and minimal abilities to acclimatize to higher temperatures. We discuss recent molecular biological and genomic studies that provide critical foundations for understanding the types of evolutionary changes in protein structure, RNA secondary structure, genome content, and gene expression capacities that underlie adaptation to temperature. Duplication of stress‐related genes, as found in heat‐tolerant molluscs, may provide enhanced capacity for coping with higher temperatures. We propose that the anatomical, behavioural, physiological, and genomic diversity found among intertidal molluscs, which commonly are of critical importance and high abundance in these ecosystems, makes this group of animals a highly appropriate study system for addressing questions about the mechanistic determinants of current and future distribution patterns of intertidal organisms.

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Section: Adaptive Variation In Thermal Responses Of Intertidal Mollus...mentioning

confidence: 99%

An integrated, multi‐level analysis of thermal effects on intertidal molluscs for understanding species distribution patterns

et al. 2021

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Differential survival of Ilyanassa obsoleta to water temperature and association with the non-native red alga Gracilaria vermiculophylla

Lee,

Fowler,

Largen

et al. 2024

Hydrobiologia

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Along the U.S. east coast, the widespread non-native red alga Gracilaria vermiculophylla provides habitat for an array of macroinvertebrates, including the eastern mudsnail Ilyanassa obsoleta. Though I. obsoleta tolerates a wide temperature range, increases in summer water temperatures may enhance mortality; furthermore, the presence of non-native algae in rising seawater temperatures could exacerbate harmful conditions. We tested how the presence or absence of G. vermiculophylla influenced snail mortality across a range of summer temperatures over a 3-week period. We found that I. obsoleta survived the longest in the lowest temperature (27 °C), followed by the medium (32 °C), and lastly the highest (36 °C) where all snails died within 2 days. Mortality was also higher and faster for snails in the presence versus absence of G. vermiculophylla. We suspected dissolved oxygen became very low at the higher temperatures with G. vermiculophylla; thus we conducted a laboratory-based dissolved oxygen experiment. We found that G. vermiculophylla degraded and oxygen declined faster at the highest temperature treatment, thereby creating anoxic conditions. Altogether, our results demonstrate that G. vermiculophylla could enhance anoxic conditions at high summer temperatures, potentially leading to enhanced faunal mortality.

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“A comparison of thermal stress response between Drosophila melanogaster and Drosophila pseudoobscura reveals differences between species and sexes”

Rivera-Rincón,

Altindag,

Amin

et al. 2024

Journal of Insect Physiology

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Differences in heat tolerance plasticity between supratidal and intertidal snails indicate complex responses to microhabitat temperature variation

Cited by 16 publications

References 37 publications

An integrated, multi‐level analysis of thermal effects on intertidal molluscs for understanding species distribution patterns

An integrated, multi‐level analysis of thermal effects on intertidal molluscs for understanding species distribution patterns

Differential survival of Ilyanassa obsoleta to water temperature and association with the non-native red alga Gracilaria vermiculophylla

“A comparison of thermal stress response between Drosophila melanogaster and Drosophila pseudoobscura reveals differences between species and sexes”

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