J. R. Jaeger

Publications39
h-index15
Citations1,372
Highly Influential Citations147
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Cryptic vicariance in the historical assembly of a Baja California peninsular desert biota.
TLDR
The Peninsular Desert can no longer be considered a subset of the Sonoran Desert-it is a separate regional desert with its own unique evolutionary history, ecological arena, and conservation value.
MITOCHONDRIAL INTROGRESSION AND INCOMPLETE LINEAGE SORTING THROUGH SPACE AND TIME: PHYLOGENETICS OF CROTAPHYTID LIZARDS
TLDR
It is shown with ecological niche modeling that the predicted geographical ranges of C. collaris, C. bicinctores, and C. reticulatus during glacial maxima could have provided enhanced opportunities for past hybridization, and proposed an “introgression conveyor” model to explain this unique pattern of mitochondrial variation in this region.
Cryptic Neogene vicariance and Quaternary dispersal of the red‐spotted toad (Bufo punctatus): insights on the evolution of North American warm desert biotas
TLDR
Evaluation of nucleotide and haplotype diversity and interpretations from NCA reveal that populations on the Colorado Plateau resulted from a recent, likely post‐Pleistocene, range expansion from the Chihuahuan Desert.
ELUCIDATION OF CRYPTIC DIVERSITY IN A WIDESPREAD NEARCTIC TREEFROG REVEALS EPISODES OF MITOCHONDRIAL GENE CAPTURE AS FROGS DIVERSIFIED ACROSS A DYNAMIC LANDSCAPE
TLDR
Investigation of the evolutionary history of the wide‐ranging Nearctic treefrog Hyla arenicolor through the integration of extensive range‐wide sampling, phylogenetic analyses of multilocus genetic data, and divergence dating suggests that introgressive hybridization events, both ancient and contemporary, coupled with late Neogene vicariance and Pleistocene climate‐driven range shifts, have all played a role in the historical diversification of H. werenicolor.
Desert Tortoise (Gopherus agassizii) Survival at Two Eastern Mojave Desert Sites: Death by Short-Term Drought?
TLDR
Survival of adult Desert Tortoises (Gopherus agassizii) appears related to site-specific variation in precipitation and productivity of annual plants, which may be an important factor determining tortoise population densities.
Rediscovering Rana onca: Evidence for Phylogenetically Distinct Leopard Frogs from the Border Region of Nevada, Utah, and Arizona
TLDR
Parallel patterns of divergence observed in the mtDNA, RAPD, and morphological analyses indicate that leopard frogs from the Virgin River drainage and adjacent portions of the Colorado River are phylogenetically distinct.
Pleistocene Impacts on the Phylogeography of the Desert Pocket Mouse (Chaetodipus penicillatus)
TLDR
Developing ecological niche models (EMNs) for the major lineages of C. penicillatus and project these models onto reconstructions of climatic conditions during the latest glacial maximum (LGM) and identifying 2 major monophyletic mtDNA lineages (clades) roughly centered in the Mojave and Sonoran deserts indicate differences in predicted current geographic distributions as well as distributions during the LGM.
HABITAT PATCH OCCUPANCY BY TOADS (BUFO PUNCTATUS) IN A NATURALLY FRAGMENTED DESERT LANDSCAPE
Amphibians are often thought to have a metapopulation structure, which may render them vulnerable to habitat fragmentation. The red-spotted toad (Bufo punctatus )i n the southwestern United States…
Cryptic diversity of a widespread global pathogen reveals expanded threats to amphibian conservation
TLDR
This study uses a custom method for genotyping degraded Bd DNA samples, such as those nondestructively collected from live animal or museum specimen skin swabs, and presents the discovery of a divergent lineage of Bd—BdASIA3, that appears to be widespread in Southeast Asia.
POPULATION STATUS AND DISTRIBUTION OF A DECIMATED AMPHIBIAN, THE RELICT LEOPARD FROG (RANA ONCA)
TLDR
The relict leopard frog was once thought to be extinct, but has recently been shown to comprise a valid taxon with extant populations, and the minimum historical range of the species is delineated and the extinction of 2 of 7 populations extant in the 1990s reported.
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