Carl R. Hutter

Carl R. Hutter
Louisiana State University | LSU · Department of Biological Sciences

Doctor of Philosophy

About

47
Publications
26,166
Reads
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1,017
Citations
Additional affiliations
August 2011 - December 2012
Stony Brook University
Position
  • Master's Student

Publications

Publications (47)
Article
Full-text available
The Tropical Andes are an important global biodiversity hotspot, harbouring extraordinarily high richness and endemism. Although elevational richness and speciation have been studied independently in some Andean groups, the evolutionary and ecological processes that explain elevational richness patterns in the Andes have not been analysed together....
Article
Full-text available
abstract: The Tropical Andes make up Earth’s most species-rich biodiversity hotspot for both animals and plants. Nevertheless, the ecological and evolutionary processes underlying this extraordinary richness remain uncertain. Here, we examine the processes that gen- erate high richness in the Tropical Andes relative to other regions in South Americ...
Article
We investigate the molecular phylogeny of Boophis, a group of arboreal frogs from the Malagasy-Comoroan family Mantellidae. Based on newly acquired DNA sequences of five mitochondrial and five nuclear markers (7444 base pairs), we infer a phylogeny of Boophis with complete species-level taxon sampling. We reconstruct the phylogeny using Bayesian in...
Article
Full-text available
Despite the prevalence of high‐throughput sequencing in phylogenetics, many relationships remain difficult to resolve because of conflicting signal among genomic regions. Selection of different types of molecular markers from different genomic regions is required to overcome these challenges. For evolutionary studies in frogs, we introduce the publ...
Article
Full-text available
The subgenus Laurentomantis in the genus Gephyromantis contains some of the least known amphibian species of Madagascar. The six currently valid nominal species are rainforest frogs known from few individuals, hampering a full understanding of the species diversity of the clade. We assembled data on specimens collected during field surveys over the...
Article
Full-text available
The Red-fingered Bright-eyed Frog Boophis erythrodactylus is an endemic, range-restricted arboreal frog found only in the eastern rainforests of Madagascar. We report new localities for this species, along with locality records for its sister species B. tasymena, including localities where they occur in sympatry, which has never been reported befor...
Article
Full-text available
We describe a fantastic new species of forest frog (Mantellidae: Gephyromantis : subgenus: Laurentomantis ) from moderately high elevations in the vicinity of Andasibe, Madagascar. This region has been surveyed extensively and has a remarkably high anuran diversity with many undocumented species still being discovered. Surprisingly, by exploring ar...
Article
Adaptive radiation is a key topic at the intersection of ecology and evolutionary biology. Yet the definition and identification of adaptive radiation both remain contentious. Here, we introduce a new approach for identifying adaptive radiations which combines key aspects of two widely used definitions. Our approach compares evolutionary rates in m...
Article
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In cryptic amphibian complexes, there is a growing trend to equate high levels of genetic structure with hidden cryptic species diversity. Typically, phylogenetic structure and distance-based approaches are used to demonstrate the distinctness of clades and justify the recognition of new cryptic species. However, this approach does not account for...
Preprint
Full-text available
Species are the fundamental units of life and their recognition is essential for science and society. DNA barcoding, the use of a single and often mitochondrial gene, has been increasingly employed as a universal approach for the identification of animal species. However, this approach faces several challenges. Here, we demonstrate with empirical d...
Article
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Genome-scale data have greatly facilitated the resolution of recalcitrant nodes that Sanger-based datasets have been unable to resolve. However, phylogenomic studies continue to use traditional methods such as boot-strapping to estimate branch support; and high bootstrap values are still interpreted as providing strong support for the correct topol...
Article
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Most new cryptic species are described using conventional tree‐ and distance‐based species delimitation methods (SDMs), which rely on phylogenetic arrangements and measures of genetic divergence. However, although numerous factors such as population structure and gene flow are known to confound phylogenetic and species delimitation inferences, the...
Article
Full-text available
Glassfrogs (family: Centrolenidae) represent a fantastic radiation (~150 described species) of Neotropical anurans that originated in South America and dispersed into Central America. In this study, we review the systematics of Ecuadorian glassfrogs, providing species accounts of all 60 species, including three new species described herein. For all...
Article
Using FrogCap, a recently-developed sequence-capture protocol, we obtained more than 12,000 highly informative exons, introns, and Ultraconserved elements (UCEs), which we used to illustrate variation in evolutionary histories of these classes of markers, and to resolve long-standing systematic problems in Southeast Asian Golden-backed frogs of the...
Article
Full-text available
The subgenus Mantidactylus is a group of frogs endemic to Madagascar, including the largest anuran species on the island. Although these frogs are common and widely distributed, their taxonomy remains unclear. Two species are currently recognised, M. grandidieri and M. guttulatus, with another available name, Rana pigra, considered to be a synonym...
Article
Madagascar's biota is characterized by a high degree of microendemism at different taxonomic levels, but how colonization and in-situ speciation contribute to the assembly of local species communities has rarely been studied in this island. Here we analyze the phylogenetic relationships of riparian frogs of the Mantidactylus ambreensis species comp...
Article
Full-text available
Tissue sample databases housed in biodiversity archives represent a vast trove of genetic resources, and these tissues are often destructively subsampled and provided to researchers for DNA extractions and subsequent sequencing. While obtaining a sufficient quantity of DNA for downstream applications is vital for these researchers, it is also impor...
Preprint
Full-text available
As molecular methods continue to elucidate genetic structure at increasingly finer resolutions, delimiting species in the grey zone of the speciation continuum is becoming more relevant in biodiversity research, especially in under-studied biodiversity hotspots such as Southeast Asia where new species are being described at an unprecedented rate. O...
Preprint
Full-text available
Despite the increasing use of high-throughput sequencing in phylogenetics, many phylogenetic relationships remain difficult to resolve because of conflict between gene trees and species trees. Selection of different types of markers (i.e. protein-coding exons, non-coding introns, ultra-conserved elements) is becoming important to alleviate these ph...
Preprint
The manuscript titled “Exons, Introns, and UCEs Reveal Conflicting Phylogenomic Signals in a Rapid Radiation of Frogs (Ranidae: Hylarana )” has been withdrawn from BioRxiv temporarily. The manuscript has been withdrawn because it utilizes a new protocol for data collection, which has yet not been published. Once the paper describing the new method...
Article
Full-text available
Taxonomy is the cornerstone of extinction risk assessments. Currently, the IUCN Red List treats species complexes either under a single overarching species name—resulting in an unhelpfully broad circumscription and underestimated threat assessment that does not apply to any one species lineage—or omits them altogether—resulting in the omission of s...
Preprint
Tissue sample databases housed in biodiversity archives represent a vast trove of genetic resources, and these tissues are frequently destructively subsampled and provided to researchers for DNA extractions and subsequent sequencing. While obtaining a sufficient quantity of DNA for downstream applications is vital for these researchers, it is also...
Preprint
Full-text available
Tissue sample databases housed in biodiversity archives represent a vast trove of genetic resources, and these tissues are frequently destructively subsampled and provided to researchers for DNA extractions and subsequent sequencing. While obtaining a sufficient quantity of DNA for downstream applications is vital for these researchers, it is also...
Article
Full-text available
Miniaturised frogs form a fascinating but poorly understood amphibian ecomorph and have been exceptionally prone to taxonomic underestimation. The subfamily Cophylinae (family Microhylidae), endemic to Madagascar, has a particularly large diversity of miniaturised species which have historically been attributed to the single genus Stumpffia largely...
Data
GenBank accession numbers for 3’ 16S rRNA sequences used in this study to calculate uncorrected pairwise distances. Numbers in red are those newly produced in this study. (XLSX)
Article
Full-text available
Reserva Las Gralarias is one of the best-studied localities of the Ecuadorian Andes in terms of its batrachofauna. However, as expected in any community, some species are rare and, therefore, their discovery and description are problematic. Herein, based on a single specimen, we describe Pristimantis gralarias sp nov. Even though we are aware of th...
Article
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Basic ecological data are missing from the majority of Madagascar's snakes. We here report seven dietary records from two species of the genus Compsophis and one record from Alluaudina bellyi. Among these are the first records of reptile predation by the former genus, suggesting they are not as strictly anurophagous as heretofore thought. We also r...
Article
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On a recent expedition to eastern Madagascar, we discovered a distinct new species of the genus Calumma that we describe here using an integrative approach combining morphology, coloration, osteology and molecular genetics. Calummaroalokosp. n. has a dermal rostral appendage and occipital lobes, and belongs to the C.boettgeri complex, within the Ma...
Article
Full-text available
We describe a new species from the cophyline microhylid genus Rhombophryne, a group of fossorial and terrestrial frogs endemic to Madagascar. Found during herpetofaunal surveys of moist montane forest in the remote north of Ranomafana National Park, Rhombophryne nilevina sp. n. exemplifies two difficulties that hinder taxonomic progress in Malagasy...
Article
Full-text available
Geographic barriers and elevational gradients have long been recognized as important in species diversification. Here, we illustrate an example where both mechanisms have shaped the genetic structure of the Neotropical rainfrog, Pristimantis ornatissimus, which has also resulted in speciation. This species was thought to be a single evolutionary li...
Data
Results of the MMRR analysis. The analysis uses species’ genetic distances and tests whether geographic and environmental dissimilarity influence genetic differentiation among populations. This alternative analysis uses the raw climatic variables rather than the axes from a PCA analysis. We assessed the 19 bioclimatic variables for multicolinearity...
Data
Bayesian and maximum likelihood phylogenies of Pristimantis. Support values are presented as bootstraps and posterior probabilities. (TIFF)
Data
The loadings from the three PC axes used for the MMRR analysis. (DOCX)
Data
List of species and corresponding GenBank numbers used to infer the Pristimantis phylogeny. (DOCX)
Article
Full-text available
Natural history and behavioral information for species of the genus Pristimantis is scarce. We conducted an extensive study of Pristimantis eremitus, a vulnerable species for which there is scant biological information. We monitored 17 individuals for movements and intraspecific interactions for 13 mo. We describe the species’ variation in dorsal c...
Article
Full-text available
We present a new molecular phylogeny of the stream treefrog genus Hyloscirtus, with an improved taxon sampling in the Hyloscirtus bogotensis group. The tree supports the existence of three clades within the genus (Hyloscirtus armatus group, H. bogotensis group and Hyloscirtus larinopygion group) in congruence with previous studies, and suggests the...
Article
Full-text available
Two new species of frogs previously confused with Pristimantis calcarulatus are identified using molecular phylogenet-ics and described using an integrative taxonomic approach. The species are distributed in montane cloud forests of the northwestern Ecuadorian Andes. Pristimantis pahuma n. sp. and Pristimantis cedros n. sp. differ from their closes...
Article
Full-text available
A new species of bright-eyed treefrog (Mantellidae) from Madagascar, with comments on call evolution and patterns of syntopy in the Boophis ankaratra complex Abstract We describe a new species of Boophis treefrog from Ranomafana National Park in the southern central east of Madagascar. This region has remarkably high anuran diversity, and along wit...
Article
Full-text available
We describe a new frog, Pristimantis mutabilis sp. nov., from the Andes of Ecuador. Individuals of the new species are remarkable for their ability to change skin texture from tuberculate to almost smooth in a few minutes, being the first documented amphibian species to show such dramatic phenotypic plasticity. The new taxon is assigned to the P. m...
Article
Full-text available
In many frog species, males defend a territory through direct male-to-male inter-actions and/or aggressive calling behaviour. We describe the site fidelity, vocal-izations, aggressive interactions, and male combat behaviour of the glassfrog Nymphargus grandisonae. We show high specificity of males' calling and mating sites. We then describe the tem...
Article
Full-text available
Squamate reptiles (lizards and snakes) are one of the most diverse groups of terrestrial vertebrates. Recent molecular analyses have suggested a very different squamate phylogeny relative to morphological hypotheses, but many aspects remain uncertain from molecular data. Here, we analyse higher-level squamate phylogeny with a molecular dataset of u...
Article
Full-text available
We review the systematics of frogs of the Hyloscirtus larinopygion group. A new phylogenetic tree inferred from mitochondrial DNA (partial sequences of 12S rRNA, valine-tRNA, and 16S rRNA genes; ∼2.3 kb) of eleven species of the H. larinopygion group is provided, based on maximum parsimony, maximum likelihood, and Bayesian analyses. Our phylogeny c...
Article
Full-text available
We describe a new species of Nymphargus from Reserva Las Gralarias, in the montane forests of the Pacific versant of the Andes of Ecuador. The new species, Nymphargus lasgralarias sp. nov., is nearly morphologically identical to sym-patric Nymphargus griffithsi (Goin 1961), with the exception of the following characters: (i) a gold colored iris wit...

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Cited By

Projects

Projects (3)
Project
Conservation of Malagasy amphibians through the initiatives of the Sahonagasy Action Plan http://www.amphibians.org/news/nsap2016-2020/
Project
A step-by-step (paper-by-paper) project to resolve the taxonomy and systematics of Madagascar's cophyline microhylid frogs. Our current work is focussing on the genera Rhombophryne, Plethodontohyla, and Stumpffia.