Stoichiometric Traits Vary Widely Within Species: A Meta-Analysis of Common Garden Experiments

Lemmen, Kimberley D.; Butler, Orpheus M.; Koffel, Thomas; Rudman, Seth M.; Symons, Celia C.

doi:10.3389/fevo.2019.00339

Cited by 23 publications

(20 citation statements)

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“…But analyses focused on particular phylogenetic groups would enable such more detailed treatments. Finally, on top of their effect on interspecific variation, habitat, diet and body mass are further likely to impact intraspecific variation in body elemental composition, as it has been recurrently evidenced in previous studies on specific taxonomic groups (Table S1, Lemmen et al, 2019). Our global database currently contains too few intraspecific repetitions to handle a meaningful global analysis on intraspecific variation in heterotrophs.…”

Section: Discussionmentioning

confidence: 77%

“…Autotrophic life forms generally harbor a substantial plasticity in terms of elemental composition that greatly varies in response to nutrient and light modification of their environment (Aerts & Chapin, 1999; Duarte, 1992). In contrast, heterotrophic organisms generally present much less plastic variation in their elemental composition (Lemmen et al, 2019), a phenomenon called stoichiometric homeostasis. Although the idea of a strict homeostasis of heterotrophs has been recurrently falsified (Persson et al, 2010), it constitutes a convenient approximation, at least for metazoans.…”

Section: Introductionmentioning

confidence: 99%

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Body stoichiometry of heterotrophs: assessing drivers of interspecific variations in elemental composition

Andrieux

Signor

Guillou

et al. 2020

Preprint

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AimTo document how body stoichiometry of heterotrophs varies globally and to assess phylogenetic, trophic, habitat and body mass drivers of this interspecific variation in elemental composition, focusing on carbon (C), nitrogen (N) and phosphorus (P).LocationWorldwide.Time period1930 – 2018.Major taxa studiedAmphibians, fishes (Euteleosteomorpha and Otomorpha), invertebrates, mammals, microbes and sauropsids (birds and reptiles).MethodsWe compiled from the scientific literature a global database of body elemental composition of heterotrophs in marine, freshwater and terrestrial realms. We used model selection and ANCOVA analyses to investigate the proportion of variance in elemental composition explained by taxonomic groups, diet, habitat and body mass. We assessed the phylogenetic signal in body stoichiometry using Blomberg’s K and Pagel’s λ statistics. We assessed the phylogenetic structure of interspecific variation in body stoichiometry using mixed models with nested taxonomic levels as random factors. We finally assessed the co-variation in elemental composition using linear models.ResultsOur database currently gathers 17848 independent observations on 1491 species. Body elemental composition was found to be widely variable among species with the four assessed drivers significantly contributing to this variation. Taxonomic group is the strongest contributor to interspecific variance for the stoichiometric traits studied, followed by habitat, diet and body mass. More precisely, stoichiometric traits are generally variable at the three taxonomic levels studied (class, order and family), resulting in a significant but relatively modest phylogenetic signal. Finally, we found significant co-variation among the three body elemental contents, resulting in taxonomic group-specific C:N:P spectrums.Main conclusionsOur global synthesis of body stoichiometry of heterotrophs reveals a strong interspecific variability that is only modestly explained by the species attributes investigated: body mass, habitat and diet. It further reveals that this taxonomically structured residual variation in body stoichiometry seems to be constrained along taxonomic group-specific elemental spectrums.

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Section: Discussionmentioning

confidence: 77%

Section: Introductionmentioning

confidence: 99%

Body stoichiometry of heterotrophs: assessing drivers of interspecific variations in elemental composition

Andrieux

Signor

Guillou

et al. 2020

Preprint

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“…The organismal stoichiometry, stoichiometric niche 15,52 and nutritional limitation of individuals shape populations and communities of organisms via resource competition 2 . Unfortunately, intraspecific variability in elemental stoichiometry is not well documented, and most stoichiometrically explicit models treat populations www.nature.com/scientificreports/ as uniform pools of elements, although recent studies have attempted to address this issue [53][54][55][56] . This large-scale approach ignores the complexity of the population structure, thereby underestimating the variability among individuals and leading to an oversimplification of the conclusions about resource limitation.…”

Section: Discussionmentioning

confidence: 99%

Stoichiometric niche, nutrient partitioning and resource allocation in a solitary bee are sex-specific and phosphorous is allocated mainly to the cocoon

Filipiak

Woyciechowski

Czarnołęski

2021

Sci Rep

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Life histories of species may be shaped by nutritional limitations posed on populations. Yet, populations contain individuals that differ according to sex and life stage, each of which having different nutritional demands and experiencing specific limitations. We studied patterns of resource assimilation, allocation and excretion during the growth of the solitary bee Osmia bicornis (two sexes) under natural conditions. Adopting an ecological perspective, we assert that organisms ingest mutable organic molecules that are transformed during physiological processes and that the immutable atoms of the chemical elements composing these molecules may be allocated to specific functions, thereby influencing organismal fitness and life history. Therefore, using the framework of ecological stoichiometry, we investigated the multielemental (C, N, S, P, K, Na, Ca, Mg, Fe, Zn, Mn, Cu) compositions of six components of the bee elemental budget: food (pollen), eggs, pupae, adults, cocoons and excreta. The sexes differed fundamentally in the assimilation and allocation of acquired atoms, elemental phenotypes, and stoichiometric niches for all six components. Phosphorus, which supports larval growth, was allocated mainly (55–75%) to the cocoon after larval development was complete. Additionally, the majority (60–99%) of the Mn, Ca, Mg and Zn acquired during larval development was allocated to the cocoon, probably influencing bee fitness by conferring protection. We conclude that for holometabolous insects, considering only the chemical composition of the adult body within the context of nutritional ecology does not provide a complete picture. Low ratios of C to other nutrients, low N:P and high Na concentrations in excreta and cocoons may be important for local-scale nutrient cycling. Limited access to specific nutritional elements may hinder bee development in a sex-dependent manner, and N and P limitations, commonly considered elsewhere, may not play important roles in O. bicornis. Sexual dimorphism in nutritional limitations due to nutrient scarcity during the larval stage may influence bee population function and should be considered in bee conservation efforts.

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“…Stoichiometric niches induce resource competition, resulting in nutritional limitation that in turn shapes populations and communities of organisms [7]. However, most stoichiometrically explicit models do not consider population and community structure, where intraspecific variability in elemental stoichiometry exists [43,[47][48][49]. Concurrently, organismal fitness may be influenced by trade-offs originating from the conflict between the sexes in reaching sex-specific nutritional optima [22,23,50].…”

Section: Discussionmentioning

confidence: 99%

Sexual Dimorphism in the Multielemental Stoichiometric Phenotypes and Stoichiometric Niches of Spiders

Sobczyk

Filipiak

Czarnołęski

2020

Insects

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Nutritional limitations may shape populations and communities of organisms. This phenomenon is often studied by treating populations and communities as pools of homogenous individuals with average nutritional optima and experiencing average constraints and trade-offs that influence their fitness in a standardized way. However, populations and communities consist of individuals belonging to different sexes, each with specific nutritional demands and limitations. Taking this into account, we used the ecological stoichiometry framework to study sexual differences in the stoichiometric phenotypes, reflecting stoichiometric niches, of four spider taxa differing in the hunting mode. The species and sexes differed fundamentally in their elemental phenotypes, including elements beyond those most commonly studied (C, N and P). Both species and sexes were distinguished by the C:N ratio and concentrations of Cu, K and Zn. Species additionally differed in concentrations of Na, Mg and Mn. Phosphorous was not involved in this differentiation. Sexual dimorphism in spiders’ elemental phenotypes, related to differences in their stoichiometric niches, suggests different nutritional optima and differences in nutritional limitation experienced by different sexes and species. This may influence the structure and functioning of spider populations and communities.

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Stoichiometric Traits Vary Widely Within Species: A Meta-Analysis of Common Garden Experiments

Cited by 23 publications

References 95 publications

Body stoichiometry of heterotrophs: assessing drivers of interspecific variations in elemental composition

Body stoichiometry of heterotrophs: assessing drivers of interspecific variations in elemental composition

Stoichiometric niche, nutrient partitioning and resource allocation in a solitary bee are sex-specific and phosphorous is allocated mainly to the cocoon

Sexual Dimorphism in the Multielemental Stoichiometric Phenotypes and Stoichiometric Niches of Spiders

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