Divergence in Bergmann’s clines: elevational variation and heritability of body size in a leaf-cutting ant

Sandoval-Arango, Stephania; Henao, Heiber Cárdenas; Lerma, James Montoya

doi:10.1007/s00040-020-00771-8

Cited by 6 publications

(2 citation statements)

References 55 publications

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“…By summarizing the relevant literature ( Table 1 ), we found that most of the investigations into Hymenoptera were focused on ants, bees, and other larger wasps. The geographical trends vary among species and different morphological parts, and some ant species even showed a nonlinear trend with elevation [ 19 ]. Relevant research on miniature taxa only involved Encyrtidae [ 20 ] and Mymaridae [ 21 ], and only conducted a simple comparison of body-size differences, so the knowledge of small-sized taxa is still limited.…”

Section: Introductionmentioning

confidence: 99%

Environmental Factors Drive Chalcid Body Size Increases with Altitudinal Gradients for Two Hyper-Diverse Taxa

Kang

Huang

et al. 2023

Insects

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Body size is the most essential feature that significantly correlates with insects’ longevity, fecundity, metabolic rate, and sex ratio. Numerous biogeographical rules have been proposed to illustrate the correlation between the body sizes of different taxa and corresponding geographical or environmental factors. Whether the minute and multifarious chalcids exhibit a similar geographical pattern is still little known. In this research, we analyzed morphological data from 2953 specimens worldwide, including the two most abundant and diverse taxa (Pteromalidae and Eulophidae), which are both composed of field-collected and BOLD system specimens. We examined forewing length as a surrogate of body size and analyzed the average size separately for males and females using two methods (species and assemblage-based method). To verify Bergmann’s rule, we included temperature, precipitation, wind speed and solar radiation as explanatory variables in a generalized linear model to analyze the causes of the size variation. We found that there was an increasing trend in the body size of Pteromalidae and Eulophidae with altitude. The optimal Akaike information criterion (AIC) models showed that larger sizes are significantly negatively correlated with temperature and positively correlated with precipitation, and the possible reasons for this variation are discussed and analyzed.

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Section: Introductionmentioning

confidence: 99%

Environmental Factors Drive Chalcid Body Size Increases with Altitudinal Gradients for Two Hyper-Diverse Taxa

Kang

Huang

et al. 2023

Insects

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“…More complex, non‐linear ecogeographic clines also exist, including (1) saw‐tooth clines (sharp changes in size trends); (2) bowl‐shaped clines (trough in size at mid‐latitudes/altitudes; Jin & Liao, 2015; Johansson, 2003; Kaustuv & Martien, 2001); and (3) dome‐shaped clines (mid‐latitudinal/altitudinal peak in size; Blanckenhorn & Demont, 2004; Elmes et al, 1999; Laugen et al, 2005; Sandoval‐Arango et al, 2020). Non‐linear clines are understudied despite a review that found they may be more common than previously thought, especially for ectotherms (Shelomi, 2012).…”

Section: Introductionmentioning

confidence: 99%

Water temperature and season length interact to explain a rare non‐linear ecogeographic cline in body size

Barry,

Smith,

Heres

et al. 2023

Journal of Biogeography

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AimAdult body size often exhibits patterns across large‐scale environmental gradients, creating ecogeographic clines. However, the form of body size clines varies across taxonomic groups, with linear and non‐linear patterns in body size observed in nature. Non‐linear body size clines have received less study, and questions remain about how environmental gradients interact to produce non‐linear clines. We examined the body size of the American horseshoe crab (Limulus polyphemus), a widely distributed marine arthropod, and evaluated the hypothesis that temperature and active season length can interact multiplicatively to result in a dome‐shaped distribution.LocationFourteen states in the United States of America and three Mexican states, representing the entire geographic range of the species.MethodsWe compiled environmental data and body size measurements from more than 49,000 individual horseshoe crabs. For each location, we extracted from the literature or calculated from raw data the mean male prosoma width and the mean female prosoma width. We applied a general additive modelling (GAM) approach to characterize the body size cline, test a hypothesis regarding temperature and season length, and explore evidence for the influence of additional environmental factors.ResultsModel results indicate temperature and season length could act multiplicatively to produce dome‐shaped clines, and these findings align with and quantify previous anecdotal reports of a strong dome‐shaped body size cline across latitude for horseshoe crabs.Main ConclusionsActive season length appears to become relatively more influential on horseshoe crab body size in the northern part of their range, while temperature effects per se appear to dominate in southern latitudes. For horseshoe crabs, the pattern of size variation is consistent with the predictions of Optimal Resource Allocation models, but more study is needed to elucidate mechanistic underpinnings. Considering climate change projections, results from our study suggest future shifts in horseshoe crab body sizes.

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Altitude is correlated with body size differences among Cotesia flavipes (Hymenoptera: Braconidae) wasps collected in two mountain ranges

Lozano-Morales,

Gutiérrez-García,

Salamanca

et al. 2024

Zoology

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Divergence in Bergmann’s clines: elevational variation and heritability of body size in a leaf-cutting ant

Cited by 6 publications

References 55 publications

Environmental Factors Drive Chalcid Body Size Increases with Altitudinal Gradients for Two Hyper-Diverse Taxa

Environmental Factors Drive Chalcid Body Size Increases with Altitudinal Gradients for Two Hyper-Diverse Taxa

Water temperature and season length interact to explain a rare non‐linear ecogeographic cline in body size

Altitude is correlated with body size differences among Cotesia flavipes (Hymenoptera: Braconidae) wasps collected in two mountain ranges

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