Natural Selection on Adults Has Trait-Dependent Consequences for Juvenile Evolution in Dragonflies

Moore, Michael P.; Martin, Ryan A.

doi:10.1086/714048

Cited by 8 publications

(10 citation statements)

References 72 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…light [41], temperature [16] and predation [15]) or even on juveniles (e.g. via resource trade-offs over tyrosine with immune defense or cuticle integrity [12,13,42,43]; via other physiological costs of melanin production [14]). Undoubtedly, more research should be devoted to studying how juvenile and adult habitats interactively shape ornament evolution, as well as why patterns manifest across the major lineages but not within them [44].…”

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

“…Unlike body size, wing ornamentation begins to develop prior to metamorphosis but continues throughout adulthood [12][13][14]. Such adult traits may have more options to circumvent any early-life limits on their development, perhaps including increased reliance on adult resources and developmental processes [3,7,8,42]. Intriguingly, however, lentic dragonflies are somewhat more likely to possess male ornamentation-though this pattern across the major lineages was not recapitulated within them (electronic supplementary material, table S4).…”

Section: Macrommentioning

confidence: 99%

See 2 more Smart Citations

Larval habitats impose trait-dependent limits on the direction and rate of adult evolution in dragonflies

Moore¹

2021

Biol. Lett.

Self Cite

View full text Add to dashboard Cite

Natural selection on juveniles is often invoked as a constraint on adult evolution, but it remains unclear when such restrictions will have their greatest impact. Selection on juveniles could, for example, mainly limit the evolution of adult traits that mostly develop prior to maturity. Alternatively, selection on juveniles might primarily constrain the evolution of adult traits that experience weak or context-dependent selection in the adult stage. Using a comparative study of dragonflies, I tested these hypotheses by examining how a species’ larval habitat was related to the evolution of two adult traits that differ in development and exposure to selection: adult size and male ornamentation. Whereas adult size is fixed at metamorphosis and experiences consistent positive selection in the adult stage, ornaments develop throughout adulthood and provide context-dependent fitness benefits. My results show that species that develop in less stable larval habitats have smaller adult sizes and slower rates of adult size evolution. However, these risky larval habitats do not limit ornament expression or rates of ornament evolution. Selection on juveniles may therefore primarily affect the evolution of adult traits that mostly develop prior to maturity.

show abstract

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Macrommentioning

confidence: 99%

See 1 more Smart Citation

Larval habitats impose trait-dependent limits on the direction and rate of adult evolution in dragonflies

Moore¹

2021

Biol. Lett.

Self Cite

View full text Add to dashboard Cite

show abstract

“…Trueman, 2019; but see McMahon & Hayward, 2016, who find a few, rare, examples). As with salamanders vs frogs, hemimetabolous insects may be more likely to draw on, but perhaps also be more constrained by, their ontogenetic trajectories than holometabolous ones, but the net evolutionary consequences have not been assessed (see Moore & Martin, 2021;Galis, 2022). Also unknown is whether clades differ in their ability to change scaling relationships and thus ontogenetic allometries (e.g.…”

Section: Ontogenetic Allometry or Multiphase Life Cyclesmentioning

confidence: 99%

Evolvability and Macroevolution: Overview and Synthesis

Jablonski

2022

Evol Biol

View full text Add to dashboard Cite

Evolvability is best addressed from a multi-level, macroevolutionary perspective through a comparative approach that tests for among-clade differences in phenotypic diversification in response to an opportunity, such as encountered after a mass extinction, entering a new adaptive zone, or entering a new geographic area. Analyzing the dynamics of clades under similar environmental conditions can (partially) factor out shared external drivers to recognize intrinsic differences in evolvability, aiming for a macroevolutionary analog of a common-garden experiment. Analyses will be most powerful when integrating neontological and paleontological data: determining differences among extant populations that can be hypothesized to generate large-scale, long-term contrasts in evolvability among clades; or observing large-scale differences among clade histories that can by hypothesized to reflect contrasts in genetics and development observed directly in extant populations. However, many comparative analyses can be informative on their own, as explored in this overview. Differences in clade-level evolvability can be visualized in diversity-disparity plots, which can quantify positive and negative departures of phenotypic productivity from stochastic expectations scaled to taxonomic diversification. Factors that evidently can promote evolvability include modularity—when selection aligns with modular structure or with morphological integration patterns; pronounced ontogenetic changes in morphology, as in allometry or multiphase life cycles; genome size; and a variety of evolutionary novelties, which can also be evaluated using macroevolutionary lags between the acquisition of a trait and phenotypic diversification, and dead-clade-walking patterns that may signal a loss of evolvability when extrinsic factors can be excluded. High speciation rates may indirectly foster phenotypic evolvability, and vice versa. Mechanisms are controversial, but clade evolvability may be higher in the Cambrian, and possibly early in the history of clades at other times; in the tropics; and, for marine organisms, in shallow-water disturbed habitats.

show abstract

“…Currently, it remains unclear whether all life‐history stages have been studied equally or if emphases on particular stages exist. For example, an informal reading of literature implies that correlations between the larval and juvenile stages are of particular interest in studies of marine invertebrates (Mendt & Gosselin, 2021 ; Phillips, 2002 ), insects (Carter & Sheldon, 2020 ; Moore, 2021 ; Moore and Martin, 2021 ), frogs (Green & Bailey, 2015 ; van Allen et al, 2010 ), and fish (Araki et al, 2009 ; Dingeldein & White, 2016 ). However, by focusing on a few stages, we may be missing key correlations that could regulate populations—for example, the egg stage may determine adult phenotypes and densities, and the effect of this correlation can last for several generations (Downes et al, 2021 ; Plaistow et al, 2006 ).…”

Section: Introductionmentioning

confidence: 99%

Mapping the correlations and gaps in studies of complex life histories

Richardson

Marshall

2023

Ecology and Evolution

View full text Add to dashboard Cite

For species with complex life histories, phenotypic correlations between life‐history stages constrain both ecological and evolutionary trajectories. Studies that seek to understand correlations across the life history differ greatly in their experimental approach: some follow individuals (“individual longitudinal”), while others follow cohorts (“cohort longitudinal”). Cohort longitudinal studies risk confounding results through Simpson's Paradox, where correlations observed at the cohort level do not match that of the individual level. Individual longitudinal studies are laborious in comparison, but provide a more reliable test of correlations across life‐history stages. Our understanding of the prevalence, strength, and direction of phenotypic correlations depends on the approaches that we use, but the relative representation of different approaches remains unknown. Using marine invertebrates as a model group, we used a formal, systematic literature map to screen 17,000+ papers studying complex life histories, and characterized the study type (i.e., cohort longitudinal, individual longitudinal, or single stage), as well as other factors. For 3315 experiments from 1716 articles, 67% focused on a single stage, 31% were cohort longitudinal and just 1.7% used an individual longitudinal approach. While life‐history stages have been studied extensively, we suggest that the field prioritize individual longitudinal studies to understand the phenotypic correlations among stages.

show abstract

Natural Selection on Adults Has Trait-Dependent Consequences for Juvenile Evolution in Dragonflies

Cited by 8 publications

References 72 publications

Larval habitats impose trait-dependent limits on the direction and rate of adult evolution in dragonflies

Larval habitats impose trait-dependent limits on the direction and rate of adult evolution in dragonflies

Evolvability and Macroevolution: Overview and Synthesis

Mapping the correlations and gaps in studies of complex life histories

Contact Info

Product

Resources

About