Tightly congruent bursts of lineage and phenotypic diversification identified in a continental ant radiation

Price, Shauna L.; Etienne, Rampal S.; Powell, Scott

doi:10.1111/evo.12894

Cited by 46 publications

(72 citation statements)

References 67 publications

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“…; Price et al. ). However, to date, relatively little work has integrated phylogenetic and eco‐morphogical data to address trait‐based diversification and evolutionary processes in ants, especially on a broad, family‐wide scale.…”

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confidence: 97%

Defensive traits exhibit an evolutionary trade‐off and drive diversification in ants

Blanchard

Moreau

2016

Evolution

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Evolutionary biologists have long predicted that evolutionary trade-offs among traits should constrain morphological divergence and species diversification. However, this prediction has yet to be tested in a broad evolutionary context in many diverse clades, including ants. Here, we reconstruct an expanded ant phylogeny representing 82% of ant genera, compile a new family-wide trait database, and conduct various trait-based analyses to show that defensive traits in ants do exhibit an evolutionary trade-off. In particular, the use of a functional sting negatively correlates with a suite of other defensive traits including spines, large eye size, and large colony size. Furthermore, we find that several of the defensive traits that trade off with a sting are also positively correlated with each other and drive increased diversification, further suggesting that these traits form a defensive suite. Our results support the hypothesis that trade-offs in defensive traits significantly constrain trait evolution and influence species diversification in ants.

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confidence: 97%

Defensive traits exhibit an evolutionary trade‐off and drive diversification in ants

Blanchard

Moreau

2016

Evolution

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“…; Price et al. ; Puttick ), they are far from common and an analysis of 44 extant clades, including some of the most iconic examples of adaptive radiation, revealed a dearth of support for early‐burst dynamics in both size and shape data (Harmon et al. ).…”

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Hierarchy in adaptive radiation: A case study using the Carnivora (Mammalia)

2019

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Simpson's “early burst” model of adaptive radiation was intended to explain the early proliferation of morphological and functional variation in diversifying clades. Yet, despite much empirical testing, questions remain regarding its frequency across the tree of life. Here, we evaluate the support for an early burst model of adaptive radiation in 14 ecomorphological traits plus body mass for the extant mammalian order Carnivora and its constituent families. We find strong support for early bursts of dental evolution, suggesting a classic Simpsonian adaptive radiation along dietary resource axes. However, the signal of this early burst is not consistently recovered in analyses at the family level, where support for a variety of different models emerges. Furthermore, we find no evidence for early burst–like dynamics in size–related traits, and Bayesian analyses of evolutionary correlations corroborate a decoupling of size and dental evolution, driven in part by dietary specialization. Our results are consistent with the perspective that trait diversification unfolds hierarchically, with early bursts restricted to traits associated with higher level niches, such as macrohabitat use or dietary strategy, and thus with the origins of higher taxa. The lack of support for early burst adaptive radiation in previous phylogenetic studies may be a consequence of focusing on low‐level niche traits (i.e., those associated with microhabitat use) in clades at shallow phylogenetic levels. A richer understanding of early burst adaptive radiation will require a renewed focus on functional traits and their evolution over higher level clades.

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“…Alternatively, rates of speciation and phenotypic evolution can be decoupled in "cryptic" species complexes or nonadaptive radiations (Gittenberger 1991;Kozak et al 2006;Rundell and Price 2009). Previous macroevolutionary studies have found that rates of phenotypic evolution and speciation are correlated in some clades or traits (Rabosky and Adams 2012;Rabosky et al 2013;Puttick et al 2015;Price et al 2016;Ramírez-Barahona et al 2016) and uncorrelated in others (Adams et al 2009;Venditti et al 2012;Burbrink et al 2012;Bapst et al 2012;Zelditch et al 2015;Lee et al 2016), suggesting that both of these patterns may be widespread in nature.…”

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Song evolution, speciation, and vocal learning in passerine birds

et al. 2017

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Phenotypic divergence can promote reproductive isolation and speciation, suggesting a possible link between rates of phenotypic evolution and the tempo of speciation at multiple evolutionary scales. To date, most macroevolutionary studies of diversification have focused on morphological traits, whereas behavioral traitsincluding vocal signalsare rarely considered. Thus, although behavioral traits often mediate mate choice and gene flow, we have a limited understanding of how behavioral evolution contributes to diversification. Furthermore, the developmental mode by which behavioral traits are acquired may affect the rates of behavioral evolution, although this hypothesis is seldom This article is protected by copyright. All rights reserved. 2 tested in a phylogenetic framework. Here, we examine evidence for rate shifts in vocal evolution and speciation across two major radiations of codistributed passerines: one oscine clade with learned songs (Thraupidae) and one suboscine clade with innate songs (Furnariidae). We find that evolutionary bursts in rates of speciation and song evolution are coincident in both thraupids and furnariids. Further, overall rates of vocal evolution are higher among taxa with learned rather than innate songs. Taken together, these findings suggest an association between macroevolutionary bursts in speciation and vocal evolution, and that the tempo of behavioral evolution can be influenced by variation in developmental modes among lineages.

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Tightly congruent bursts of lineage and phenotypic diversification identified in a continental ant radiation

Cited by 46 publications

References 67 publications

Defensive traits exhibit an evolutionary trade‐off and drive diversification in ants

Defensive traits exhibit an evolutionary trade‐off and drive diversification in ants

Hierarchy in adaptive radiation: A case study using the Carnivora (Mammalia)

Song evolution, speciation, and vocal learning in passerine birds

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