Evolutionary consequences of ecological release in CaribbeanAnolislizards

Losos, Jonathan B.

doi:10.1006/bijl.1997.0137

Cited by 9 publications

(4 citation statements)

References 30 publications

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“…The SSD was measured as the ratio of maximum female size to maximum male size. Distribution data were taken from Schwartz & Henderson (1991) and Losos & de Queiroz (1997).…”

Section: (A) Datamentioning

confidence: 99%

“…Communities of Anolis are structured by intrageneric competition (Collette 1961;Losos 1994), clades display convergence in morphologies and habitat use across Caribbean islands ( Williams 1972;Losos et al 1998), and species may occur in isolation or coexist with up to 11 sympatric congeners ( Williams 1983;Losos et al 2003). Schoener (1969a) demonstrated that solitary Anolis species in the Caribbean display nonrandom patterns of size and SSD, and Losos & de Queiroz (1997) found that many solitary species were not generalists but rather fit the specialized 'trunk-crown' ecomorph.…”

Section: Introductionmentioning

confidence: 99%

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Convergent exaptation and adaptation in solitary island lizards

2007

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Independent evolutionary lineages often display similar characteristics in comparable environments. Three kinds of historical hypotheses could explain this convergence. The first is adaptive and evolutionary: nonrandom patterns may result from analogous evolutionary responses to shared conditions. The second explanation is exaptive and ecological: species may be filtered by their suitability for a particular type of environment. The third potential explanation is a null hypothesis of random colonization from a historically nonrandom source pool. Here we demonstrate that both exaptation and adaptation have produced convergent similarity in different size-related characters of solitary island lizards. Large sexual size dimorphism results from adaptive response to solitary existence; uniform, intermediate size results from ecological filtering of potential colonizers. These results demonstrate the existence of deterministic exaptive convergence and suggest that convergent phenomena may require historical explanations that are ecological as well as evolutionary.

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“…The SSD was measured as the ratio of maximum female size to maximum male size. Distribution data were taken from Schwartz & Henderson (1991) and Losos & de Queiroz (1997).…”

Section: (A) Datamentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Convergent exaptation and adaptation in solitary island lizards

2007

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“…Selection is also predicted to play a major role in these changes based on previous work (Losos et al 1997; Kolbe et al 2012;Winchell et al 2016). The observed shifts in relative limb length may be ecologically signi cant as it has been well-established that limb length is positively correlated with perch diameter and sprint speed in anoles.…”

Section: Evolution Vs Plasticitymentioning

confidence: 84%

“…Animals were euthanized using MS-222 (Conroy et al 2009) and preserved using formalin and stored in 70% ethanol. Due to concerns over shrinkage in formalin-preserved specimens (Irschick et al 1997;Losos et al 1997;Vervust et al 2009), live specimens collected in 2018 were measured in 2020, two years after formalin-preservation. To minimize measurement error, all measurements of both museum and eldsampled (then preserved) specimens were collected by a single investigator (JGP).…”

Section: Methodsmentioning

confidence: 99%

Rapid morphological shifts in a co-invaded assemblage of lizards

Phillips

Hagey

Hagemann

et al. 2022

Preprint

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Phenotypic change plays diverse and crucial roles in biotic invasion, but most studies of invasions focus on individual species. To compare ecomorphological changes among co-invading species with overlapping native niches, we examined three lizards on the island of O‘ahu: (Anolis carolinensis, A. sagrei, Phelsuma laticauda). Using specimens from three decades of unfolding invasions obtained from museum collections and the field, we quantified temporal shifts in three ecologically relevant traits: snout vent length (SVL), forelimb-, and hindlimb-length (limb lengths relative to SVL). We found unique patterns of phenotypic change in each species as well as sex-specific changes within species: 1) both anole species increased in SVL since the 1980s, 2) forelimb length increased in Phelsuma females and in both sexes in A. carolinensis, and 3) relative hindlimb length increased in Phelsuma (both sexes) and decreased in A. sagrei (both sexes). The observed changes involve ecomorphological traits that are feasibly consequential to invasion dynamics. Our study illustrates how museum- and field-based research can be integrated to document nuanced temporal patterns in the phenotypes of co-invading species that share similar niches in their native ranges; it also raises important questions about the underlying process(es) driving species- and sex-specific change in co-invaded systems.

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Analysis of Morphological Change during a Co-invading Assemblage of Lizards in the Hawaiian Islands

Phillips,

Hagey,

Hagemann

et al. 2024

Evol Biol

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Phenotypic change plays diverse roles in species’ colonization, but most invasion studies target single species. To compare ecomorphological changes among co-invading species with overlapping niches, we examined three lizards on the island of O‘ahu (Anolis carolinensis, A. sagrei, Phelsuma laticauda). Using specimens from three decades of unfolding invasions obtained through museum collections and contemporary field work, we quantified shifts in three traits: snout vent length (SVL), forelimb-, and hindlimb-length (limb lengths relative to SVL). We hypothesized that competition among these three species has led to ecological shifts that will be detectable through morphological change. Overall, we found that unique patterns of phenotypic change were both species-specific and sex-specific within species: (1) male A. sagrei, female A. carolinensis, and male P. laticauda increased in SVL and (2) relative hindlimb length increased in female A. carolinensis since the 1980s. The observed changes involve traits that may be consequential to invasion dynamics. This study illustrates how museum- and field-based research can be integrated to document nuanced temporal patterns in the phenotypes of co-invading species that share similar niches in native ranges, raising questions about the underlying process(es) driving species- and sex-specific change in co-invaded systems.

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Evolutionary consequences of ecological release in CaribbeanAnolislizards

Cited by 9 publications

References 30 publications

Convergent exaptation and adaptation in solitary island lizards

Convergent exaptation and adaptation in solitary island lizards

Rapid morphological shifts in a co-invaded assemblage of lizards

Analysis of Morphological Change during a Co-invading Assemblage of Lizards in the Hawaiian Islands

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