Interactive effects of intrinsic and extrinsic factors on metabolic rate

Philosophical Transactions of the Royal Society B Biological Sciences, Journal Year: 2024, Volume and Issue: 379(1896)

Published: Jan. 8, 2024

Metabolism energizes all biological processes, and its tempo may importantly influence the ecological success evolutionary fitness of organisms. Therefore, understanding broad variation in metabolic rate that exists across living world is a fundamental challenge biology. To further development more reliable holistic picture causes this variation, we review several examples how various intrinsic (biological) extrinsic (environmental) factors (including body size, cell activity level, temperature, predation other diverse genetic, cellular, morphological, physiological, behavioural influences) can interactively affect synergistic or antagonistic ways. Most interactive effects have been documented involve temperature both, but future research reveal additional ‘hub factors’. Our highlights complex, intimate inter-relationships between physiology ecology, knowledge which shed light on problems both disciplines, including physiological adaptations, life histories, niches organism-environment interactions ecosystems. We also discuss theoretical practical implications provide suggestions for research, system analyses at hierarchical levels organization focus proximate (functional) ultimate (evolutionary) causal networks. This article part theme issue ‘The significance rates’.

Language: Английский

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The seasonal response of metabolic rate to projected climate change scenarios in aquatic amphipods

Journal of Thermal Biology, Journal Year: 2024, Volume and Issue: 124, P. 103941 - 103941

Published: Aug. 1, 2024

The responses of organisms to climate change are mediated primarily by its impact on their metabolic rates, which, in turn, drive various biological and ecological processes. Although there have been numerous seminal studies the sensitivity rate temperature, little is empirically known about how this responds seasonal temperature ranges beyond under conservative IPCC scenarios. Here, we measured SMR aquatic amphipod, Gammarus insensibilis, which served as our subject species, with body masses ranging from 0.20 7.74 mg ash free weight. We assessed response across nine levels 12 30.2 °C. These temperatures match norms, an incremental increase 0.6-1.2 °C above each baseline, projected for years 2040 2100 modest Overall, findings showed that effect varies mass, indicated a negative size-temperature interaction, larger conspecifics exhibiting less changes than smaller ones. From cold warm season, increased average 14%

Language: Английский

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The relative importance of metabolic rate and body size to space use behavior in aquatic invertebrates

Ecology and Evolution, Journal Year: 2024, Volume and Issue: 14(5)

Published: May 1, 2024

Elucidating the underlying mechanisms behind variations of animal space and resource use is crucial to pinpoint relevant ecological phenomena. Organism's traits related its energy requirements might be central in explaining behavioral variation, as ultimate goal a forager fulfill requirements. However, it has remained poorly understood how patterns are functionally connected. Here we aimed assess body mass standard metabolic rate (SMR) influence terms cumulative time spent an experimental patchy environment, both within species among individuals irrespective identity. We measured SMR two invertebrate species, that is, amphipod

Language: Английский

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Metabolic rate and foraging behaviour: a mechanistic link across body size and temperature gradients

Oikos, Journal Year: 2024, Volume and Issue: unknown

Published: Oct. 16, 2024

The mechanistic link between metabolic rate and foraging behaviour is a crucial aspect of several energy‐based ecological theories. Despite its importance to ecology however, it remains unclear whether how energy requirements behavioural patterns are mechanistically connected. Here we aimed assess modes behaviour, including cumulative space use, patch selection time spent in an experimental resource‐patchy environment, related forager's standard (SMR) main determinants, i.e. body mass temperature. We tested the individual rates model organism, amphipod Gammarus insensibilis , across range masses temperatures. demonstrated quantitatively that temperature exert major influence on decisions use via their effects marginal value energy. Individual was found scale allometrically with exponentially temperature, giving‐up falling as increased. In response warmer temperatures, specimens adaptively intensified effort explored larger spaces offset elevated SMR. Our results showed SMR explained more variation than combined, had greater predictive power for patterns. Furthermore, regarding choice partitioning were strongly mass‐and‐temperature‐adjusted (residual), which component phenotype. Individuals higher M–T adjusted initially preferred most profitable and, progressed, abandoned earlier others. These demonstrate intimately associated variations rate, phenotypic or due size combined. This, turn, sheds light higher‐order processes.

Language: Английский

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The combined negative effect of temperature, UV radiation and salinity on eDNA detection: A global meta-analysis on aquatic ecosystems

Ecological Indicators, Journal Year: 2025, Volume and Issue: 176, P. 113669 - 113669

Published: June 2, 2025

Language: Английский

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Metabolic rate and foraging behaviour: A mechanistic link across body size and temperature gradients

bioRxiv (Cold Spring Harbor Laboratory), Journal Year: 2024, Volume and Issue: unknown

Published: March 6, 2024

Abstract The mechanistic link between metabolic rate and foraging behaviour is a crucial aspect of several energy-based ecological theories. Despite its importance to ecology however, it remains unclear whether how energy requirements behavioural patterns are mechanistically connected. Here we aimed assess modes behaviour, in terms cumulative space use, patch selection time spent an experimental resource patchy environment, influenced by the foragers’ (SMR) main determinants i.e. body mass temperature. We tested individual rates model organism, amphipod Gammarus insensibilis , across range masses temperatures. demonstrated that temperature exert major influence on decisions use via their effects rates. Individual was found scale allometrically with exponentially temperature, giving-up falling as increased. Moreover, SMR had greater predictive power for patterns, explaining variation beyond accounted combined. Our results showed scaled positively Mass- and-Temperature-independent (residual). Furthermore, regarding choice partitioning were strongly related M-T independent SMR; individuals higher initially preferred most profitable and, progressed, abandoned earlier compared others. findings relationship shed light higher-order processes, implications face climate change.

Language: Английский

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Life-History Traits and Acclimation Ability of a Copepod Species from the Dripping Waters of the Corchia Cave (Apuan Alps, Tuscany, Italy)

Water, Journal Year: 2023, Volume and Issue: 15(7), P. 1356 - 1356

Published: April 1, 2023

Copepods are the dominant crustacean group in groundwater, where they perform valuable ecosystem services related to carbon recycling. The life-history traits of stygobitic (groundwater-obligate dweller) copepods, however, have only been casually studied past. In addition, next nothing is known about responses copepods climate change. this study, we investigated and respiratory metabolism a species harpacticoid Moraria sp., endemic Corchia Cave Apuan Alps (Italy). We collected specimens sp. from dripping waters cave observed their development, survival, reproduction rates laboratory for one year. also evaluated acclimation ability adult females by measuring oxygen consumption temperature range 8 °C (average annual water Stalactites Gallery Cave) 12.5 (maximum expected according change scenarios 2100). Our results indicate that Is stenothermal showing remarkable (long life span, low metabolic rates). noted significantly affected small (+1.5 °C) thermal changes. showed no compensation occurring over two weeks exposure temperatures higher than °C. outcomes study suggest May not be able tolerate changes brought on

Language: Английский

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Metabolic Rate of Goldfish (Carassius auratus) in the Face of Common Aquaculture Challenges

Biology, Journal Year: 2024, Volume and Issue: 13(10), P. 804 - 804

Published: Oct. 9, 2024

This study examined the metabolic rate (MO2, oxygen consumption) of goldfish (Carassius auratus) under normal management conditions in aquaculture. Using an intermittent respirometry system, we assessed daily variations and effects feeding, handling, temperature increase, anesthetics. MO2 exhibited a rhythm, with higher values during day. Feeding to satiety produced 35% increase compared fasted animals, maximum peak after 3 h returning baseline 7 h. Handling stress (5 min) 140% (from 180 252 mg O2 kg−1 h−1), routine 2.5 An water (+0.1 °C min−1) up 30 caused at 200% from start increase. The use common anesthetics aquaculture (MS-222, 2-phenoxyethanol clove oil deep anesthesia concentration) affects first few minutes anesthetic recovery, but also following 4 It can be concluded that is good indicator goldfish’s response practices involving energy expenditure stress. Thus, valuable non-invasive tool for understanding improving fish welfare

Language: Английский

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Swimming at Increasing Speeds in Steady and Unsteady Flows of Atlantic Salmon Salmo salar: Oxygen Consumption, Locomotory Behaviour and Overall Dynamic Body Acceleration

Biology, Journal Year: 2024, Volume and Issue: 13(6), P. 393 - 393

Published: May 29, 2024

The swimming performance of cultured finfish species is typically studied under steady flow conditions. However, conditions are mostly unsteady, for instance, as experienced in sea pens exposed areas. Using a Loligo swim tunnel, we investigated the effects and unsteady flows at increasing speeds on post-smolt Atlantic salmon. Oxygen consumption (MO2), locomotory behaviour, overall dynamic body acceleration (ODBA), determined with implanted acoustic sensor tags, were compared between both Results obtained mean 0.2 to 0.8 m.s−1 Sensor tags that abdominal cavity had no significant MO2 parameters. fish was significantly higher (15–53%) than when (p < 0.05). Significant interaction ODBA speed found. strongly positively correlated (R2 = 0.94 R2 0.93, respectively) 0.91 0.82, respectively). predicts well over range In an condition, increased twice fast From these results, can conclude (1) energetically more costly salmon flow, indicated by MO2, (2) be used estimate oxygen tunnels.

Language: Английский

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Standard metabolic rate variation among New Zealand Orthoptera

Current Research in Insect Science, Journal Year: 2024, Volume and Issue: 6, P. 100092 - 100092

Published: Jan. 1, 2024

Standard metabolic rates (SMR) of ectotherms reflect the energetic cost self-maintenance and thus provide important information about life-history strategies organisms. We examined variation in SMR among fifteen species New Zealand orthopteran. These represent a heterogeneous group with wide geographic distribution, differing morphologies life histories. Gathering original data on morphological physiological traits individual is first step towards understanding existing variability. Individual are one to respond climate change. Baseline datasets valuable for modeling current distributions their responses changing climate. At higher latitudes, average environmental temperature decreases. The pattern that cold-adapted display at colder temperatures greater thermal sensitivity compensate lower shorter growing reproductive seasons predicted from cold adaptation (MCA) hypothesis. predict orthopteran found latitudes. further compared index Q

Language: Английский

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