Do invasive species live faster? Mass‐specific metabolic rate depends on growth form and invasion status

Lagos, Marcelo E.; White, Craig R.; Marshall, Dustin J.

doi:10.1111/1365-2435.12913

Cited by 35 publications

(27 citation statements)

References 43 publications

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“…The mass-specific standard metabolic rate (mass-specific SMR) at the individual level, defined as the resting energy expenditure per unit body mass per day, was computed here with individual body mass expressed as individual dry weight (Wilhelm et al, 2006;Glazier et al, 2011;Lagos et al, 2017), in accordance with the following formula:…”

Section: Discussionmentioning

confidence: 99%

Components of standard metabolic rate variability in three species of gammarids

et al. 2019

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Abstract. Standard metabolic rate is a major functional trait with large inter-individual variability in many groups of aquatic species. Here we present results of an experimental study to address variation in standard metabolic rates, over different scales of organisation and environments, within a specific group of aquatic macro-invertebrates (i.e. gammarid amphipods) that represent the primary consumers in detritus food webs. The study was carried out using flow-through microrespirometric techniques on male specimens of three gammarid species from freshwater, transitional water and marine ecosystems. We examined individual metabolic rate variations at three scales: (1) at the individual level, during an 8 h period of daylight; (2) at the within-population level, along body-size and body-condition gradients; (3) at the interspecific level, across species occurring in the field in the three different categories of aquatic ecosystems, from freshwater to marine. We show that standard metabolic rates vary significantly at all three scales examined, with the highest variation observed at the within-population level. Variation in individual standard metabolic rates during the daylight hours was generally low (coefficient of variation, CV<10 %) and unrelated to time. The average within-population CV ranged between 30.0 % and 35.0 %, with body size representing a significant source of overall inter-individual variation in the three species and individual body condition exerting only a marginal influence. In all species, the allometric equations were not as steep as would be expected from the 3∕4 power law, with significant variation in mass-specific metabolic rates among populations. The population from the transitional water ecosystem had the highest mass-specific metabolic rates and the lowest within-population variation. In the gammarid species studied here, body-size-independent variations in standard individual metabolic rates were higher than those explained by allometric body size scaling, and the costs of adaptation to short-term periodic variations in water salinity in the studied ecosystems also seemed to represent a major source of variation.

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Section: Discussionmentioning

confidence: 99%

Components of standard metabolic rate variability in three species of gammarids

et al. 2019

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“…As well as being related to impact, FRs and MRs might be related to invasion success (Lagos et al 2017), although less strongly and in variable directions. High resource consumption rates, sometimes measured explicitly as FRs, are associated with success of alien species at various stages of the invasion process (Catford et al 2009;Xu et al 2016;McKnight et al 2017).…”

Section: Pacifastacus Leniusculusmentioning

confidence: 99%

Predatory impacts of alien decapod Crustacea are predicted by functional responses and explained by differences in metabolic rate

Taylor

Dunn

2018

Biol Invasions

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Alien predators can have large impacts on prey. It is important that we understand, and ideally predict, these impacts. Here, we compare predatory impacts of size-matched decapod crustaceans-invasive alien Eriocheir sinensis and Pacifastacus leniusculus, and native European Austropotamobius pallipes-and use this case study to inform methods for impact prediction. We quantify functional responses (FRs) on three macroinvertebrate prey species, examine switching behaviour, and measure metabolic rates as a possible mechanistic explanation for differences in predation. FRs show a consistent pattern: attack coefficients and maximum feeding rates are ordered E. sinensis≥P. leniusculus≥A. pallipes for all prey species. Attack coefficients of E. sinensis are up to 6.7 times greater than those of size-matched crayfish and maximum feeding rates up to 3.0 times greater. FR parameters also differ between the invasive and native crayfish, but only up to 2.6 times. We find no evidence of switching behaviour in crayfish but suggestions of negative switching in E. sinensis. Differences in FR parameters are mirrored by differences in routine, but not standard, metabolic rate. Overall, our data predict strong predatory impacts of E. sinensis, even relative to alien P. leniusculus. Strong impacts of P. leniusculus relative to A. pallipes may be driven more by body size or abundance than per capita effect. FRs vary between prey types in line with existing knowledge of impacts, supporting the use of FRs in quantitative, prey-specific impact predictions. MRs could offer a general mechanistic explanation for differences in predatory behaviour and impacts.

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“…niche, growth rate, reproductive capacity or tolerance to disturbance), which are underpinned by physiological characteristics (Van Kleunen et al, 2010;Kelley, 2014;Lennox et al, 2015). Characteristics of metabolic ratethe rate at which an organism expends energy, commonly measured using oxygen consumption rate ( _ M O 2 )are increasingly recognized as a potential determinant of invasion success (González-Ortegón et al, 2010;Maazouzi et al, 2011;Lejeusne et al, 2014;Lagos et al, 2017). Relatively few studies have examined their relevance to invasive fish, however, which is surprising given the number and impact of invasive fish species worldwide (but see Marras et al, 2015;McCallum et al, 2017;Behrens et al, 2017;Srean et al, 2017;Nati et al, 2018;Tessier et al, 2018).…”

Section: Introductionmentioning

confidence: 99%

An appetite for invasion: digestive physiology, thermal performance, and food intake in lionfish (Pterois spp.)

Steell

Leeuwen

Brownscombe

et al. 2019

Journal of Experimental Biology

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Species invasions threaten global biodiversity, and physiological characteristics may determine their impact. Specific dynamic action (SDA; the increase in metabolic rate associated with feeding and digestion) is one such characteristic, strongly influencing an animal's energy budget and feeding ecology. We investigated the relationship between SDA, scope for activity, metabolic phenotype, temperature and feeding frequency in lionfish (Pterois spp.), which are invasive to western Atlantic marine ecosystems. Intermittent-flow respirometry was used to determine SDA, scope for activity and metabolic phenotype at 26°C and 32°C. Maximum metabolic rate occurred during digestion, as opposed to exhaustive exercise, as in more athletic species. SDA and its duration (SDA dur) were 30% and 45% lower at 32°C than at 26°C, respectively, and lionfish ate 42% more at 32°C. Despite a 32% decline in scope for activity from 26°C to 32°C, aerobic scope may have increased by 24%, as there was a higher range between standard metabolic rate (SMR) and peak SDA (SDA peak ; the maximum postprandial metabolic rate). Individuals with high SMR and low scope for activity phenotypes had a less costly SDA and shorter SDA dur but a higher SDA peak. Feeding frequently had a lower and more consistent cost than consuming a single meal, but increased SDA peak. These findings demonstrate that: (1) lionfish are robust physiological performers in terms of SDA and possibly aerobic scope at temperatures approaching their thermal maximum, (2) lionfish may consume more prey as oceans warm with climate change, and (3) metabolic phenotype and feeding frequency may be important mediators of feeding ecology in fish.

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Do invasive species live faster? Mass‐specific metabolic rate depends on growth form and invasion status

Cited by 35 publications

References 43 publications

Components of standard metabolic rate variability in three species of gammarids

Components of standard metabolic rate variability in three species of gammarids

Predatory impacts of alien decapod Crustacea are predicted by functional responses and explained by differences in metabolic rate

An appetite for invasion: digestive physiology, thermal performance, and food intake in lionfish (Pterois spp.)

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