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Christopher Blair

Christopher Blair
New York City College of Technology (CUNY) · Biological Sciences

PhD

About

40
Publications
19,132
Reads
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1,834
Citations
Citations since 2016
9 Research Items
1491 Citations
2016201720182019202020212022050100150200
2016201720182019202020212022050100150200
2016201720182019202020212022050100150200
2016201720182019202020212022050100150200
Additional affiliations
December 2015 - present
CUNY Graduate Center
Position
  • Professor (Assistant)
August 2014 - present
New York City College of Technology
Position
  • Professor (Assistant)
Description
  • General Biology and Bioinformatics
August 2012 - present
Duke University
Position
  • PostDoc Position
Education
September 2007 - June 2012
University of Toronto
Field of study
  • Ecology & Evolutionary Biology

Publications

Publications (40)
Preprint
Full-text available
The southern US and northern Mexico serve as an ideal region to test alternative hypotheses regarding biotic diversification. Genomic data can now be combined with sophisticated computational models to quantify the impacts of paleoclimate change, geographic features, and habitat heterogeneity on spatial patterns of genetic diversity. In this study...
Article
Full-text available
The southwestern and central US serve as an ideal region to test alternative hypotheses regarding biotic diversification. Genomic data can now be combined with sophisticated computational models to quantify the impacts of paleoclimate change, geographic features, and habitat heterogeneity on spatial patterns of genetic diversity. In this study we c...
Article
Genomic data continue to advance our understanding of species limits and biogeographic patterns. However, there is still no consensus regarding appropriate methods of phylogenomic analysis that make the best use of these heterogeneous data sets. In this study, we used thousands of ultraconserved element (UCE) loci from alligator lizards in the genu...
Article
The Pacific chorus frogs are a complex of three wide-ranging species (i.e. Hyliola hypochondriaca, Hyliola regilla, Hyliola sierra) whose current taxonomy remains unresolved. We conducted species delimitation analyses of these taxa using fragments of the cytochrome b and 12S–16S mtDNA genes to assess the species diversity. Importantly, we included...
Article
Full-text available
The Brown Vine Snake, Oxybelis aeneus, was until recently considered a single species, distributed from southern Arizona through the Neotropics into southeastern Brazil. However, newly conducted research restructured the species with a substantial taxonomic revision , recognizing five additional taxa (i.e. O. koehleri, O. microphthalmus, O. potosie...
Article
The Pacific chorus frogs are a complex of three wide-ranging species (i.e. Hyliola hypochondriaca, Hyliola regilla, Hyliola sierra) whose current taxonomy remains unresolved. We conducted species delimitation analyses of these taxa using fragments of the cytochrome b and 12S-16S mtDNA genes to assess the species diversity. Importantly, we included...
Article
Full-text available
With the continued adoption of genome‐scale data in evolutionary biology comes the challenge of adequately harnessing the information to make accurate phylogenetic inferences. Coalescent‐based methods of species tree inference have become common, and concatenation has been shown in simulation to perform well, particularly when levels of incomplete...
Article
Biodiversity reduction and loss continues to progress at an alarming rate, and thus there is widespread interest in utilizing rapid and efficient methods for quantifying and delimiting taxonomic diversity. Single-locus species-delimitation methods have become popular, in part due to the adoption of the DNA barcoding paradigm. These techniques can b...
Article
Disentangling the origin of putatively introduced/invasive species is of increasing priority in conservation biology. The presence of a previously undocumented species may be due to an undetected recent population or range expansion associated with environmental change, or due to an introduction by humans. We used molecular tools to address the ori...
Article
DNA quantity can be a hindrance in ecological and evolutionary research programs due to a range of factors including endangered status of target organisms, available tissue type, and the impact of field conditions on preservation methods. A potential solution to low quantity DNA lies in whole genome amplification (WGA) techniques that can substanti...
Article
Full-text available
Although numerous studies have attempted to find single unifying mechanisms for generating Madagascar's unique flora and fauna, little consensus has been reached regarding the relative importance of climatic, geologic, and ecological processes as catalysts of diversification of the region's unique biota. Rather, recent work has shown that both biol...
Article
Methods and approaches for accurate species delimitation continue to be a highly controversial subject in the systematics community. Inaccurate assessment of species' limits precludes accurate inference of historical evolutionary processes. Recent evidence suggests that multilocus coalescent methods show promise in delimiting species in cryptic cla...
Article
Full-text available
Disentangling the relative influence of histori-cal versus contemporary processes shaping the spatial distribution of genetic variation is critical if we are to effectively mitigate key biodiversity issues. We utilize a comprehensive approach based on different molecular marker types and analytical methods to understand the demographic consequences...
Article
Full-text available
Debate continues as to whether allopatric speciation or peripatric speciation through a founder effect is the predominant force driving evolution in vertebrates. The mouse lemurs of Madagascar are a system in which evolution has generated a large number of species over a relatively recent time frame. Here, we examine speciation patterns in a pair o...
Article
Full-text available
Habitat fragmentation due to both natural and anthropogenic forces continues to threaten the evolution and maintenance of biological diversity. This is of particular concern in tropical regions that are experiencing elevated rates of habitat loss. Although less well-studied than tropical rain forests, tropical dry forests (TDF) contain an enormous...
Data
Multiple regression on distance matrices (MRM) results showing the relationship between pairwise genetic distance (linearized Dest) and least-cost path cost distances incorporating landscape heterogeneity. Candidate models tested were based on a priori hypotheses and to minimize collinearity among predictors. Optimal cost values used to parameteriz...
Data
a) Structure results illustrating changes in ln Pr(X|K) under the aspatial model. b) Structure results based on the second order rate of change (ΔK method) under the aspatial model. For each K, 10 independent simulations were performed. (TIF)
Data
Genetic diversity statistics per locus and population for Phyllodactylus tuberculosus sampled throughout the Alamos, Sonora region. (DOCX)
Data
a) Structure results illustrating changes in ln Pr(X|K) under the spatial model. b) Structure results based on the second order rate of change (ΔK method) under the spatial model. For each K, 10 independent simulations were performed. (TIF)
Data
Multiple regression on distance matrices (MRM) results showing the relationship between pairwise genetic distance (linearized Dest) and resistance distances incorporating landscape heterogeneity. Candidate models tested were based on a priori hypotheses. Optimal cost values used to parameterize resistance surfaces prior to calculating resistance di...
Article
Full-text available
Background: Pliocene uplifting of the Qinghai-Tibetan Plateau (QTP) and Quaternary glaciation may have impacted the Asian biota more than any other events. Little is documented with respect to how the geological and climatological events influenced speciation as well as spatial and genetic structuring, especially in vertebrate endotherms. Macaca m...
Data
A maximum parsimony tree for wild Chinese rhesus macaques, Macaca mulatta, derived from 214 D-loop haplotypes. Four outgroup haplotypes were used to root the tree. Bootstrap support from maximum parsimony (1000 replicates) (≥50% retained) were shown at the nodes. (TIF)
Data
The distribution of 214 D-loop haplotypes in each sampling location of wild Chinese rhesus macaques, Macaca mulatta. The first 92 haplotypes were sequenced in this study and the last 122 haplotypes were downloaded from GenBank. The 67 haplotypes colored in red were selected for concatenation with other mtDNA genes. (XLS)
Data
Statistics of genetic diversity, neutrality test and the mismatch distribution analysis. These analyses were performed for main populations of Macaca mulatta in China. SSD = Sum of Squares Deviations. (DOCX)
Data
The STR data for the wild Chinese rhesus macaque, Macaca mulatta. (XLSX)
Article
Relatively little is known about spatial patterns of cryptic diversity in tropical species and the processes that generate them. Few studies examine the geographic distribution of genetic lineages in Southeast Asia, an area hypothesized to harbor substantial cryptic diversity. We investigated the evolutionary history of Asian tree frogs of the Poly...
Article
Full-text available
We use a combination of 454 shotgun pyrosequencing and traditional molecular cloning to isolate microsatellite loci for the Mexican yellow-bellied leaf-toed gecko (Phyllodactulus tuberculosus). A pyrosequencing run on a 454 GS Junior yields 62 Mbp of data composed of 150 k fragments with an average length of 412 bp. Among the fragments, 18 144 (12...
Article
Full-text available
Different analytical techniques used on the same data set may lead to different conclusions about the existence and strength of genetic structure. Therefore, reliable interpretation of the results from different methods depends on the efficacy and reliability of different statistical methods. In this paper, we evaluated the performance of multiple...
Article
Full-text available
The acquisition of large multilocus sequence data is providing researchers with an unprecedented amount of information to resolve difficult phylogenetic problems. With these large quantities of data comes the increasing challenge regarding the best methods of analysis. We review the current trends in molecular phylogenetic analysis, focusing specif...
Article
Full-text available
Although Ameiva exsul is among the most common species of lizard found throughout the Puerto Rican Bank, studies examining the thermal ecology of the taxon remain scarce. In order to better understand the daily activity cycle and thermoregulatory behavior of A. exsul, daily activity and microhabitat data were analyzed along with thermal data includ...
Article
Full-text available
We examined patterns of community structure and microhabitat requirements of Pristimantis frogs at sites of high geographic proximity in the Tambopata region of southeastern Peru. Herpetofaunal surveys were conducted at five sites encompassing approximately 131 square km of Tambopata Province, including EcoAmazonia (EA), Reserva Amazonica (RA), Exp...
Article
Full-text available
A new, miniaturized species of Phyllodactylus Gray from Guerrero, Mexico is described. The species appears to be the smallest American species of leaf-toed gecko. The diploid karyotype consists of a graded series of 36 acrocentric and 2 subtelocentric chromosomes; the telocentric pair is the second largest. The new form is morphologically very simi...
Article
Full-text available
Herein we assess the phylogenetic relationships and taxonomy of geckos of the genus Phyllodactylus inhabiting the peninsula of Baja California, Mexico using five mitochondrial and two nuclear genes. Phylogenetic analysis using maximum parsimony (MP) and Bayesian inference (BI) recovered three distinct peninsular clades with high statistical support...
Article
Full-text available
Previous examination of morphological characters for Goniurosaurus hainanensis yielded incomplete results due to a relatively small sample size (n = 4). Therefore, we re-examined previously used scale counts for the spe-cies utilizing a significantly larger sample size of 24 individuals in addition to analyzing morphometric data for the species. Ou...
Article
Abstract – Although many researchers have compared herpetofaunal assemblages over large geographical regions, comparisons on a microgeographic scale have been scarce. Thus, the goal of this study was to compare species diversity of Eleutherodactylus on a smaller geographic scale and to determine what variables contributed to frog diversity for each...

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