A New Green Salamander in the Southern Appalachians: Evolutionary History of Aneides aeneus and Implications for Management and Conservation with the Description of a Cryptic Microendemic Species

Patton, Austin H.; Apodaca, Joseph J.; Corser, Jeffrey D.; Wilson, Christopher R.; Williams, Lori A.; Cameron, Alan; Wake, David B.

doi:10.1643/ch-18-052

Cited by 11 publications

(30 citation statements)

References 105 publications

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“…A similar study analyzing types of selection in both males and females would be valuable to understand the evolution of derived monomorphism. Future work that includes the recently described species of Aneides ( Patton et al. 2019 ; Reilly and Wake 2019 ) and examines how to treat sexually dimorphic and derived monomorphic traits on phylogenies would also be worthwhile.…”

Section: Discussionmentioning

confidence: 99%

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The Evolution of Derived Monomorphism From Sexual Dimorphism: A Case Study on Salamanders

Staub

2020

Integrative Organismal Biology

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While sexual dimorphism has long received special attention from biologists, derived monomorphism, the condition in which both males and females express similar derived features, has been less well studied. Historically, the appearance of “male-like” features in females has been explained by the genetic correlation between the sexes. Recent work emphasizes the importance of studying the independent selective forces on both females and males to understand sexual dimorphism. Sexual dimorphism and derived monomorphism in the genus Aneides are examined in light of predictions of social selection. Aneides hardii shows the greatest degree of sexual dimorphism in snout-vent length and head width, with the other species of Aneides less sexually dimorphic. This reduced dimorphism, however, is not a return to an ancestral monomorphic state, but rather exemplifies derived monomorphism because females express traits that were limited in expression to males of ancestral species. Instead of calling these “male-typical” traits in females, I suggest the term “derived monomorphic” traits, as these traits are typical in these females and “derived monomorphic” can apply to both sexes. Increased attention to studying the patterns and ecological significance of derived monomorphism will shed light on the underlying selective forces, including sexual selection, on both females and males.

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Section: Discussionmentioning

confidence: 99%

“…Tree is adapted from Vieites et al. (2007) , Shen et al (2016) , Patton et al. (2019) , Reilly and Wake (2019) , and Jackman (1998) ; branch lengths are not representative of evolutionary change or time.…”

Section: Introductionmentioning

confidence: 99%

The Evolution of Derived Monomorphism From Sexual Dimorphism: A Case Study on Salamanders

Staub

2020

Integrative Organismal Biology

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“…Numerous outcrop-specialized plant species have been found to exhibit both low levels of genetic diversity and population size across portions of the Appalachian Mountain region of North America (Godt et al 1996), while outcrop-specialized vertebrate taxa from the same region have been recognized as harboring cryptic, microendemic diversity (Patton et al 2019).…”

Section: Introductionmentioning

confidence: 99%

Light Detection and Ranging (LiDAR)-Assisted Detection of Rock Outcrops in Appalachian Hardwood Forests

Smith

Mullins

2021

Journal of Fish and Wildlife Management

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The identification of small habitat features embedded within forest ecosystems is a challenge for many wildlife inventory and monitoring programs, especially for those involving rock outcrop specialist taxa. Rock outcrops are often difficult to remotely detect in dense Appalachian hardwood forests, as most outcrops remain hidden under the forest canopy and therefore invisible when relying on aerial orthoimagery to pinpoint habitat features. We investigated the ability for light detection and ranging (LiDAR) point cloud data to identify small rock outcrops during the environmental assessment phase of a proposed management project on the Jefferson National Forest in Virginia, USA. We specifically compared this approach to the visual identification of rock outcrops across the same area using aerial orthoimagery. Our LiDAR-based approach identified three times as many rock outcrop sites as aerial orthoimagery, resulting in the field-verification of four times as many previously-unknown populations of green salamanders Aneides aeneus, a rock outcrop specialist amphibian of high conservation concern, than would have been possible if relying on aerial orthoimagery alone to guide surveys. Our results indicate that LiDAR-based methods may provide an effective, efficient, and low-error approach that can remotely identify below-canopy rock outcrops embedded within Appalachian forests, especially when researchers lack pre-existing knowledge of local terrain and the location of habitat features.

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“…As a consequence of this frequent morphological and ecological conservatism, many species have come to be described on the basis of molecular differentiation (e.g. [39][40][41][42][43][44] ). Many salamander groups have diversified through primarily non-ecological means of speciation (i.e.…”

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confidence: 99%

Hybridizing salamanders experience accelerated diversification

Patton

Margres

Epstein

et al. 2020

Sci Rep

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Whether hybridization generates or erodes species diversity has long been debated, but to date most studies have been conducted at small taxonomic scales. Salamanders (order Caudata) represent a taxonomic order in which hybridization plays a prevalent ecological and evolutionary role. We employed a recently developed model of trait-dependent diversification to test the hypothesis that hybridization impacts the diversification dynamics of species that are currently hybridizing. We find strong evidence supporting this hypothesis, showing that hybridizing salamander lineages have significantly greater net-diversification rates than non-hybridizing lineages. This pattern is driven by concurrently increased speciation rates and decreased extinction rates in hybridizing lineages. Our results support the hypothesis that hybridization can act as a generative force in macroevolutionary diversification.

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A New Green Salamander in the Southern Appalachians: Evolutionary History of Aneides aeneus and Implications for Management and Conservation with the Description of a Cryptic Microendemic Species

Cited by 11 publications

References 105 publications

The Evolution of Derived Monomorphism From Sexual Dimorphism: A Case Study on Salamanders

The Evolution of Derived Monomorphism From Sexual Dimorphism: A Case Study on Salamanders

Light Detection and Ranging (LiDAR)-Assisted Detection of Rock Outcrops in Appalachian Hardwood Forests

Hybridizing salamanders experience accelerated diversification

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