A5010103670- Evolution and Paleontology Studies
- Bat Biology and Ecology Studies
- Animal Ecology and Behavior Studies
- Wildlife Ecology and Conservation
- Genetic diversity and population structure
- Genomics and Phylogenetic Studies
- Pleistocene-Era Hominins and Archaeology
- Species Distribution and Climate Change
- Amphibian and Reptile Biology
- Venomous Animal Envenomation and Studies
- Yersinia bacterium, plague, ectoparasites research
- Primate Behavior and Ecology
- Fish biology, ecology, and behavior
- Morphological variations and asymmetry
- Evolutionary Game Theory and Cooperation
- Genetic and phenotypic traits in livestock
- Rabies epidemiology and control
- Evolution and Genetic Dynamics
- Conservation, Ecology, Wildlife Education
- Animal and Plant Science Education
- Chromosomal and Genetic Variations
- Cell Adhesion Molecules Research
- Identification and Quantification in Food
- Cellular transport and secretion
- T-cell and B-cell Immunology
University of Minnesota
2014-2023
Science Museum of Minnesota
2008-2022
Ecologie & Evolution
2005-2021
American Museum of Natural History
2006-2020
University of the Philippines Diliman
2016
City University of New York
2006
City College of New York
2006
University of Minnesota System
2003
Museo de Historia Natural
2003
Smithsonian Institution
2002
This report summarizes a decade of morphological and molecular research on the phylogenetic relationships didelphid marsupials (opossums), substantially intact radiation New World metatherian mammals. We review comparative morphology Recent opossums, emphasizing those anatomical systems from which taxonomically useful information is available for majority living genera species, namely integument, cranium, dentition. Morphological similarities differences among didelphids other plesiomorphic...
The 22 genera and 64 species of rodents (Muridae: Murinae) distributed in the Philippine Islands provide a unique opportunity to study patterns processes diversification island systems. Over 90% these rodent are endemic archipelago, but relative importance dispersal from mainland, within situ differentiation as explanations this diversity remains unclear, no phylogenetic hypothesis for relevant mainland forms is currently available. Here we report results analyses murines wide sampling...
In order to test the results of a previous study didelphid marsupial phylogeny based on IRBP nuclear gene sequences (Jansa and Voss, 2000. Phylogenetic studies marsupials I. Introduction preliminary from sequences. Journal Mammalian Evolution 7: 43–77), we surveyed external, cranial, dental, karyotypic characters among more densely taxon-sampled didelphine ingroup. Separate maximum-parsimony analyses these nonmolecular data new (taxon-dense) matrix yielded superficially dissimilar...
Models of species ecological niches and geographic distributions now represent a widely used tool in ecology, evolution, biogeography. However, the very common situation with few available occurrence localities presents major challenges for such modeling techniques, particular regarding model complexity evaluation. Here, we summarize state field these issues provide worked example using technique Maxent small mammal endemic to Madagascar (the nesomyine rodent Eliurus majori ). Two relevant...
The geological record of South American mammals is spatially biased because productive fossil sites are concentrated at high latitudes. As a result, the history mammalian diversification in Amazonia and other tropical biomes largely unknown. Here we report analyses based on time-calibrated molecular phylogeny opossums (Didelphidae), species-rich clade mostly marsupials descended from Late Oligocene common ancestor. Optimizations habitat geography this suggest that (1) basal didelphid...
In this report, the second of a revisionary series on mouse opossums (Marmosa), we analyze cytochrome b sequence data from 166 specimens subgenus Micoureus and delimit putative species using multirate Poisson Tree Processes (mPTP) method. That analysis identifies 21 species, many which can be matched with available names, including alstoni, constantiae, demerarae, limae, germana, meridae, paraguayana, parda, perplexa, phaea, rapposa, rutteri. However, some these nominal taxa are not...
The current literature on marsupial phylogenetics includes numerous studies based analyses of morphological data with limited sampling Recent and fossil taxa, many molecular dense but few have combined both types. Another dichotomy in the phylogenetic is between focused New World taxa those Sahulian taxa. To date, there has been no attempt to assess relationships global fauna morphology sequences for a For this report, we compiled from an unprecedented number marsupials. Our consist 180...
Natural history museums are vital repositories of specimens, samples and data that inform about the natural world; this Formal Comment revisits a Perspective advocated for adoption compassionate collection practices, querying whether it will ever be possible to completely do away with whole animal specimen collection.
The rapid evolution of venom toxin genes is often explained as the result a biochemical arms race between venomous animals and their prey. However, it not clear that an analogy appropriate in this context because there no published evidence for might confer resistance among routinely envenomed species. Here we report such from unusual predator-prey relationship opossums (Marsupialia: Didelphidae) pitvipers (Serpentes: Crotalinae). In particular, found high ratios replacement to silent...
This report is the third in our monographic series on mammalian diversity and Matses ethnomammalogy Yavarí-Ucayali interfluvial region of northeastern Peru. Based taxonomic analysis specimens collected region, we document occurrence 19 species marsupials genera Caluromys, Glironia, Hyladelphys, Marmosa, Monodelphis, Metachirus, Chironectes, Didelphis, Philander, Gracilinanus, Marmosops. Our principal results include following: (1) provide a phylogenetic previously unpublished mitochondrial...
To resolve phylogenetic relationships among species of Marmosa we analyzed DNA sequences from one mitochondrial and three nuclear genes for every member the nominotypical subgenus four Micoureus. As reported in previous studies, was found to be paraphyletic, whereas Micoureus recovered as a robustly supported clade. Species currently referred form strongly morphologically diagnosable groups. Based on these results recognize total five subgenera: Gray, 1821 (for macrotarsus, murina,...
This is the first installment of a revision didelphid marsupial genus Philander, commonly known as gray four-eyed opossums. Although abundant and widespread in lowland tropical forests from southern Mexico to northern Argentina, species Philander are not well understood taxonomically, current literature includes many examples conflicting definitions nomenclatural usage. Our based on coalescent analyses mitochondrial gene sequences, phylogenetic nuclear genes, morphometric analyses, firsthand...
Several species in the rodent genus Mus are used as model research organisms, but comparative studies of these mice have been hampered by lack a well-supported phylogeny. We DNA sequences from six genes representing paternally, maternally, and biparentally inherited regions genome to infer phylogenetic relationships among 10 commonly laboratory research. Our sample included seven subgenus Mus; one each subgenera Pyromys, Coelomys, Nannomys; representatives three additional murine genera,...
Five nominal species of small didelphid marsupials previously referred to Gracilinanus differ conspicuously from the type (G. microtarsus) and all other valid taxa that we recognize as members genus aceramarcae, G. agilis, dryas, emiliae, marica). These anomalous forms can be distinguished morphologically (in strict sense just defined) by lacking maxillary palatal vacuities, a secondary foramen ovale, rostral process premaxillae; in addition, P3 is taller than P2, accessory cusps are often...
Complete nucleotide sequences from the mitochondrial cytochrome b gene (1143 bp) were used to investigate phylogenetic relationships among native rodents of Madagascar. Specifically, this study examines whether nine genera nesomyines form a monophyletic group relative other Old World murids. All nesomyine genera, including multiple individuals 15 21 described species, included in analysis, and their monophyly was assessed murid subfamilies Mystromyinae, Petromyscinae, Dendromurinae,...
Species of the didelphid marsupial genus Thylamys, commonly known as fat-tailed mouse opossums, are broadly distributed in open habitats central and southern South America. In this report we examine species limits infer phylogenetic relationships among Thylamys using both molecular morphological methods. We assessed a broad geographic sample DNA sequences from mitochondrial gene cytochrome b conjunction with character analysis, inferred cytochrome-b dataset addition to genes c oxidase...
The genus Marmosa contains 15 currently recognized species, of which nine are referred to the subgenus Marmosa, and six Micoureus. Recent revisionary research based on morphological data, however, suggests that is more diverse than accepted taxonomy indicates. Herein we report phylogenetic analyses sequence data from mitochondrial cytochrome-b gene representing 12 14 morphologically defined taxa recently treated as valid species (Marmosa) in aforementioned work. These provide a basis for...
Phylogenetic analyses of cytochrome-b sequence data from 13 the 15 currently recognized species New World porcupines were used to test competing taxonomic hypotheses and explore scenarios morphological evolution biogeography. Consistent with previous studies, monophyly Erethizontidae (Chaetomys Erethizon Coendou) Erethizontinae (Erethizon both strongly supported. However, cytochrome- b provide no support for reciprocal Coendou, "Echinoprocta," "Sphiggurus" as those taxa previously by...