Cyclic thermal fluctuations can be burden or relief for an ectotherm depending on fluctuations’ average and amplitude

Vajedsamiei, Jahangir; Melzner, Frank; Raatz, Michael; Lugo, Sonia C. Morón; Pansch, Christian

doi:10.1111/1365-2435.13889

Cited by 25 publications

(32 citation statements)

References 88 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…However, Roast et al (1999) did not measure feeding in their study, and therefore the direct link between respiration and feeding rates in N. integer remains unclear. In studies using the blue mussel Mytilus, it was shown that respiration and feeding are two different functional traits, which at times are decoupled from each other, suggesting that they should be compared with caution (Vajedsamiei et al, 2021).…”

Section: Sex-specific Ingestion Rates Under Constant Temperaturesmentioning

confidence: 99%

“…For instance, population growth rates of a green alga under fluctuating temperatures could be sufficiently predicted by non-linear averaging using a TPC measured at constant temperatures (Bernhardt et al, 2018). Another study on the bivalve Mytilus, combining two experiments at different time scales, could predict long-term performance at fluctuating temperatures on the basis of short-term functioning (feeding) measured at constant temperatures using nonlinear averaging (Vajedsamiei et al, 2021). These studies also confirm the theory based on Jensen's Inequality that performance is smaller in fluctuating compared to constant temperatures (of the same mean) when fluctuations range in the concave part of the generally non-linear, unimodal TPC (Supplementary Box 1; Jensen, 1906).…”

Section: Introductionmentioning

confidence: 99%

“…Therefore, there is a need to incorporate effects of fluctuations when studying species' functioning and performance in a changing world with variability (Vasseur et al, 2014). Fluctuating temperature showed substantial effects on the performance of marine organisms (Bernhardt et al, 2018;Vajedsamiei et al, 2021), which can differ between species depending on the shape of the TPC and whether the thermal mean is on the convex, concave or linear part of the TPC. For instance, Moroń Lugo et al (2020) observed decreased feeding of the sea star Asterias rubens under warming and an additional increased stress response under thermal fluctuation.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Thermal Fluctuations Yield Sex-Specific Differences of Ingestion Rates of the Littoral Mysid Neomysis integer

et al. 2022

View full text Add to dashboard Cite

Shallow aquatic environments are characterized by strong environmental variability. For ectotherms, temperature is the main driver of metabolic activity, thus also shaping performance. Ingestion rates in mysids are fast responses, influenced by metabolic and behavioral activity. We examined ingestion rates of the mysid Neomysis integer, collected in the Baltic Sea, after one-week exposure to different constant and fluctuating temperature regimes (5, 10, 15, 20°C and 9 ± 5, 14 ± 5°C, respectively). To investigate possible differences between sexes, thermal performance curves (TPCs) were established for female and male mysids based on ingestion rates measured at constant temperatures. TPCs of ingestion rates at constant temperatures differed between sexes, with female mysids showing a higher total ingestion rate as well as a higher thermal optimum compared to male mysids. Females showed reduced ingestion rates when exposed to fluctuating temperatures around their thermal optimum, whereas ingestion of male mysids was not reduced when exposed to fluctuating temperatures. The observed sex-specific differences might be related to potentially higher lipid and energy demands of the females. We suggest future studies should investigate males and females to improve our understanding about impacts of environmental variability on natural populations.

show abstract

Section: Sex-specific Ingestion Rates Under Constant Temperaturesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Thermal Fluctuations Yield Sex-Specific Differences of Ingestion Rates of the Littoral Mysid Neomysis integer

et al. 2022

View full text Add to dashboard Cite

show abstract

“…The conjunction of atmospheric and oceanographic processes caused marine heatwaves, which defined as long-term high surface temperature of ocean (Hobday et al, 2016;He et al, 2021). Ongoing ocean climate warming imposed more challenges of shallow-water ectotherms, such as shellfish, being exposed to beyond-optimal growth temperatures (Vajedsamiei et al, 2021). Lassoued et al (2021) pointed out that the impact of temperature on the metabolism and growth of marine organisms is an important driving stressor for their adaptation and warming of ocean would affect all their physiological activities to a large extent (Lassoued et al, 2021).…”

Section: Introductionmentioning

confidence: 99%

Sex-specific digestive performance of mussels exposed to warming and starvation

et al. 2022

View full text Add to dashboard Cite

As global climate change has dramatically impacted the ocean, severe temperature elevation and a decline in primary productivity has frequently occurred, which has affected the structure of coastal biomes. In this study, the sex-specific responses to temperature change and food availability in mussels were determined in terms of digestive performance. The thick-shelled mussels Mytilus coruscus (male and female) were exposed to different temperature and nutritional conditions for 30 days. The results showed that the digestive enzymes of mussels were significantly affected by temperature, food, sex, and their interactions. High temperature (30°C) and starvation significantly decreased amylase, lysozyme, and pepsase activities of female mussels, while trypsin and trehalase did not change significantly at the experimental end. The activity of amylase, trypsin, and trehalase was significantly reduced in males at high temperature (30°C) under starvation treatment, but high temperature (30°C) elevated pepsase. Unsurprisingly, starvation caused the reduction of lysozyme and pepsase under 25°C in males. Amylase, lipase, and trehalase were higher in female mussels compared with males, while the enzymatic activities of lysozyme, pepsase, and trypsin were higher in male mussels than females. Principal component analysis showed that different enzyme activity indexes were separated in male and female mussels, indicating that male and female mussels exhibited significantly different digestive abilities under temperature and food condition change. The study clarified sex-specific response difference in mussel digestive enzymes under warming and starvation and provided guidance for the development of mussel aquaculture (high temperature management and feeding strategy) under changing marine environments.

show abstract

“…Alternatively, some fluctuations and cycles can mimic the mean conditions expected due to ongoing ocean warming or acidification, which can precondition resident taxa to greater tolerance (Pansch et al, 2014;Vargas et al, 2017). In all cases, environmental variability can lead to periods where environmental conditions are favorable (Cornwall et al, 2014;Wahl et al, 2018;Vajedsamiei et al, 2021), and variability has therefore been proposed to also provide temporal refugia in a future ocean.…”

mentioning

confidence: 99%

Editorial: Influence of environmental variability on climate change impacts in marine ecosystems

et al. 2022

Self Cite

View full text Add to dashboard Cite

Editorial on the Research Topic Influence of environmental variability on climate change impacts in marine ecosystemsPhenotypic responses and selection in populations that lead to ecosystem shifts are often driven by environmental variability and extremes (Grant et al., 2017;Al-Janabi et al., 2019). Marine environments, particularly coastal and shallow-water habitats, Frontiers in Marine Science frontiersin.org 01

show abstract

Cyclic thermal fluctuations can be burden or relief for an ectotherm depending on fluctuations’ average and amplitude

Abstract: This is an open access article under the terms of the Creat ive Commo ns Attri bution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.

Cited by 25 publications

References 88 publications

Thermal Fluctuations Yield Sex-Specific Differences of Ingestion Rates of the Littoral Mysid Neomysis integer

Thermal Fluctuations Yield Sex-Specific Differences of Ingestion Rates of the Littoral Mysid Neomysis integer

Sex-specific digestive performance of mussels exposed to warming and starvation

Editorial: Influence of environmental variability on climate change impacts in marine ecosystems

Contact Info

Product

Resources

About