Does global warming intensify cost of antipredator reaction? A case study of freshwater amphipods

Jermacz, Łukasz; Kletkiewicz, Hanna; Krzyżyńska, Katarzyna; Klimiuk, Maciej; Kobak, Jarosław

doi:10.1016/j.scitotenv.2020.140474

Cited by 14 publications

(5 citation statements)

References 43 publications

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“…Several studies have investigated the link between individual energy requirements and foraging behaviour, often focusing on one of the main determinants of metabolic rate, e.g. individual body mass (Brose, 2010; Cozzoli et al, 2019, 2022; Petchey et al, 2008) or, more recently, temperature (Abram et al 2017, Cloyed et al 2019, Jermacz et al 2020). However, despite the key importance of body size and temperature per se in predicting behavioural patterns (Brose 2010, Cozzoli et al 2022), they are not sufficient to crystalize the mechanism behind them (Brandl et al 2022).…”

Section: Introductionmentioning

confidence: 99%

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

Shokri,

Cozzoli,

Basset

2024

Preprint

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

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Section: Introductionmentioning

confidence: 99%

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

Shokri,

Cozzoli,

Basset

2024

Preprint

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“…The experiment was carried out on aquatic invertebrate species, amphipod Gammarus insensibilis , and isopod Lekanesphaera monodi across a wide range of body masses. Concerning macroinvertebrates, currently little is known about their space and resource use behavior (but see Jermacz et al., 2015 , 2020 , Mancinelli, 2010 ). Using the full body mass range of the two species and tracking their individual behavioral patterns and SMR allowed us to disentangle the links of SMR and body mass (M) to the descriptors of time and space use behavior.…”

Section: Introductionmentioning

confidence: 99%

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

Shokri,

Marrocco,

Cozzoli

et al. 2024

Ecology and Evolution

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Elucidating the underlying mechanisms behind variations of animal space and resource use is crucial to pinpoint relevant ecological phenomena. Organism's traits related to its energy requirements might be central in explaining behavioral variation, as the ultimate goal of a forager is to fulfill its energy requirements. However, it has remained poorly understood how energy requirements and behavioral patterns are functionally connected. Here we aimed to assess how body mass and standard metabolic rate (SMR) influence behavioral patterns in terms of cumulative space use and time spent in an experimental patchy environment, both within species and among individuals irrespective of species identity. We measured the behavioral patterns and SMR of two invertebrate species, that is, amphipod Gammarus insensibilis, and isopod Lekanesphaera monodi, individually across a range of body masses. We found that species of G. insensibilis have higher SMR level, in addition to cumulatively exploring a larger space than L. monodi. Cumulative space use scaled allometrically with body mass, and it scaled isometrically with SMR in both species. While time spent similarly in both species was characterized by negative body mass and SMR dependence, it was observed that L. monodi individuals tended to stay longer in resource patches compared to G. insensibilis individuals. Our results further showed that within species, body mass and metabolic rate explained a similar amount of variation in behavior modes. However, among individuals, regardless of species identity, SMR had stronger predictive power for behavioral modes compared to body mass. This suggests that SMR might offer a more generalized and holistic description of behavioral patterns that extend beyond species identity. Our study on the metabolic and body mass scaling of space and resource use behavior sheds light on higher‐order ecological processes such as species' competitive coexistence along the spatial and trophic dimensions.

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“…While previous studies have investigated how amphipods perform under a range of different environment conditions (e.g. Jermacz et al, 2020; Kenna et al, 2016; Truhlar et al, 2014) few studies have accounted for amphipod survival (but see Maazouzi et al, 2011). For example, any between‐species per‐capita difference in detrital shredding rate could either be exacerbated or negated through climate driven differences in survival rates.…”

Section: Introductionmentioning

confidence: 99%

Interactive effects of resource quality and temperature drive differences in detritivory among native and invasive freshwater amphipods

et al. 2023

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Invasive non‐native species and climate change are two of the greatest pressures facing freshwater communities; however, how they interact to impact ecosystem function remains poorly understood despite the potential for impacts on key functional behaviours, such as detritivory, which could have wide‐reaching impacts. We quantified the rates of detrital processing and survival of one U.K. native (Gammarus pulex) and two invasive non‐native (Dikerogammarus villosus and Dikerogammarus haemobaphes) freshwater amphipod species, across three temperatures (8°C, 14°C, and 20°C), and three leaf diets of varying resource quality (oak, sycamore, and alder) in laboratory microcosms. We also compared amphipod survival across the different temperature and diet treatments. Rates of detrital processing varied between the native and invasive non‐native amphipod species, with native G. pulex having a faster processing rate than both invasive non‐native species at the lower temperatures. However, as the temperature treatments increased, between‐species differences decreased, while the effects of leaf diets became more apparent. Although the survival probability did not vary with amphipod species, amphipod survival was higher at lower temperatures and in treatments containing higher quality leaf diets. We propose that the invasive non‐native Dikerogammarus species will affect native communities through lower rates of detrital processing; however, this impact may change under predicted climatic warming and be increasingly similar to native amphipod species.

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Does global warming intensify cost of antipredator reaction? A case study of freshwater amphipods

Cited by 14 publications

References 43 publications

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

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

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

Interactive effects of resource quality and temperature drive differences in detritivory among native and invasive freshwater amphipods

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