A5067260571- Venomous Animal Envenomation and Studies
- Spider Taxonomy and Behavior Studies
- Amphibian and Reptile Biology
- Identification and Quantification in Food
- Control Systems and Identification
- Genetic diversity and population structure
- Ion channel regulation and function
- Iterative Learning Control Systems
- Subterranean biodiversity and taxonomy
- Study of Mite Species
- Yersinia bacterium, plague, ectoparasites research
- Species Distribution and Climate Change
- Stability and Control of Uncertain Systems
- Urban and Freight Transport Logistics
- Advanced Control Systems Optimization
- Genomics and Phylogenetic Studies
- Urban Transport and Accessibility
- Antimicrobial Peptides and Activities
- Marine Invertebrate Physiology and Ecology
- Rabies epidemiology and control
- Tribology and Lubrication Engineering
- Transportation and Mobility Innovations
- Matrix Theory and Algorithms
- Fault Detection and Control Systems
- Urban, Neighborhood, and Segregation Studies
Eastern Connecticut State University
2016-2025
California Institute of Technology
2024
Paraguayan Center for Population Studies
2020
Central University of Venezuela
2020
University of Nevada, Las Vegas
2007-2014
University of California, San Diego
2005-2010
Marshall University
2006-2007
University of California System
2007
Saint Louis University
2006
University of California, Berkeley
2006
The age of lineages has become a fundamental datum in studies exploring the interaction between geological transformation and biotic diversification. However, phylogeographical are often biased towards that younger than features landscapes they inhabit. A temporally deeper historical biogeography framework may be required to address episodes diversification associated with geologically older landscape changes. Signatures such associations retained genomes ecologically specialized...
Aim To test how Pleistocene climatic changes affected diversification of the Crotalus intermedius species complex. Location Highlands Mexico and south-western United States (Arizona). Methods We synthesize matrilineal genealogy based on 2406 base pairs mitochondrial DNA sequences, fossil-calibrated molecular dating, reconstruction ancestral geographic ranges, climate-based modelling distributions to evaluate history female dispersion. Results The presently fragmented distribution C. group is...
Abstract Background The genus Solanum is a diverse group of flowering plants with significant economic importance. Within this genus, the subgenus Leptostemonum , comprising spiny solanums, particularly noteworthy due to its high species diversity and endemism. ensifolium member subgenus, critically endangered endemic Puerto Rico known locally as erubia. survives in greenhouses botanical gardens thought be extinct wild, but reintroduction efforts progress. Despite conservation status,...
Abstract Aim As data accumulate, a multi‐taxon biogeographical synthesis of the M ojave D esert is beginning to emerge. The initial synthesis, which we call ‘ A ssembly odel’, was predominantly based on comparisons phylogeographical patterns from vertebrate taxa. We tested predictions this model by examining history H adrurus arizonensis , large scorpion and S onoran deserts. Location Mojave deserts, U nited tates exico. Methods sequenced mitochondrial cytochrome c oxidase subunit I ( COI )...
Abstract Aim Phylogeographical studies in the Mojave and Sonoran deserts often find genetic discontinuities that pre‐date Pleistocene. A recent synthesis of phylogeographical data, called Assembly Model, provides a hypothesis for historical assembly these desert biotas but does not adequately capture complexity pre‐Pleistocene vicariance events. We tested this model assessed divergences by exploring phylogeography Aphonopelma mojave group, which is composed turret‐building tarantula species...
A widespread Mesobuthus caucasicus complex, which includes some of the most common scorpions found from Caucasus to China, is revised for first time based on new extensive collections Central Asia, using both morphological and DNA marker data. (Nordmann, 1840), s.str. restricted Mts. Four taxa are elevated species rank: M. fuscus (Birula, 1897) (Tajikistan), intermedius kaznakovi 1904) (Tajikistan, Uzbekistan), parthorum (Pocock, 1889) (Afghanistan, Iran, Turkmenistan). Six described: brutus...
Scorpions are ancient and historically renowned for their potent venom. Traditionally, the systematics of this group arthropods was supported by morphological characters, until recent phylogenomic analyses (using RNAseq data) revealed most higher-level taxa to be non-monophyletic. While these hypotheses stable almost all lineages, some nodes have been hard resolve due minimal taxonomic sampling (e.g. family Chactidae). In same line, it has shown that in Arachnid Tree Life show disagreement...
Advanced sequencing technologies have expedited resolution of higher-level arthropod relationships. Yet, dark branches persist, principally among groups occurring in cryptic habitats. Among chelicerates, Solifugae ("camel spiders") is the last order lacking a phylogeny and thus been historically characterized as "neglected [arachnid] cousins". Though renowned for aggression, remarkable running speed, xeric adaptation, inferring solifuge relationships has hindered by inaccessibility...
Two new scorpion species, Vaejovis cashi sp. nov. and V. feti are described placed in the “mexicanus” group of genus Vaejovis. These small scorpions were collected at high-elevations from sky island archipelago southern Arizona New Mexico. Both species similar to vorhiesi Stahnke, a mesic Huachuca Santa Catalina Mountains. The original description consists single uninformative paragraph holotype was never designated. This paper provides redescription lectotype designation for describes two...
Abstract Although only distantly related, Anomalobuthus and Liobuthus are monotypic sympatric scorpion genera with psammophilic phenotypes well-suited to the dune communities of Karakum Kyzylkum deserts Central Asia. We predicted that this unique combination phenotypic convergence sympatry should have resulted in shared phylogeographic histories. tested hypothesis by using mitochondrial DNA data molecular dating techniques reconstruct matrilineal genealogies A. rickmersi L. kessleri. also...
Abstract Aim To review the histories of Colorado River and North American monsoon system to ascertain their effects on genetic divergence desert‐adapted animals. Location Lower region, including Mojave Sonoran deserts, United States. Methods We synthesized recent geological literature summarize initiation phases lower evolution, discrepancies, potential for post‐vicariance dispersal animals across river. simulated data under models performed a meta‐analysis published unpublished population...
In this paper, we consider the iterative learning control (ILC) framework to design a reference signal that directly cancels periodic disturbances in feedback measurement. Cancellation of is useful reducing undesirable repeatable tracking errors applications such as two-stage servo track writing process for disk drives. A general problem description given linear discrete-time system and convergence results are derived. filter designed with use finite-impulse response model approximation...
Multivariate analyses of morphological characters provide strong evidence that a highland Vaejovis from the Sierra de los Ajos, Madrean 'sky island' in northern Sonora, Mexico, represents distinct new species V. vorhiesi group. This is described and compared to other geographically adjacent group, named bandido, brief notes on ecology are provided. Results this study multivariate analysis powerful tool delimit small otherwise cryptic scorpion species.
Montane species endemic to the "sky islands" of North American southwest were significantly impacted by changing climates during Pleistocene. We combined mitochondrial and genomic data with distribution modelling determine whether Aphonopelma marxi, a large tarantula from nearby Colorado Plateau, was similarly glacial climates. Genetic analyses revealed that comprises three main clades diverged in A clade distributed along Mogollon Rim appears have persisted place conditions, whereas other...
Venom from Amazonian scorpions of the genus Tityus contains components capable eliciting a distinct clinical, mostly neurological, syndrome. This contrasts with mainly autonomic manifestations produced after envenomation by congeneric southern and northern South American species. Herein, we summarize Pan-Amazonian scorpionism synthesizing available toxinological, molecular data gathered all affected areas in Amazonia, including Brazil, Ecuador, Colombia, Peru, Venezuela, French Guiana. We...
A new species of montane scorpion is described from the Sierra Madre Occidental Mexico. The morphologically similar to scorpions distributed throughout “sky island” region southwestern United States and northwestern Mexico a member “vorhiesi” subgroup Vaejovis “mexicanus” group. morphology compared that taxa, biogeographic hypotheses about diversification this group are provided.
The Anatolian fauna of the genus Euscorpius (Scorpiones: Euscorpiidae) is in process reassessment. Twelve species this are currently recognized for Anatolia, which seven have been recently described on basis morphology. We demonstrate additional cryptic diversity by applying molecular markers (mitochondrial COI and 16S rDNA genes) from 14 populations, 13 were morphologically characterized “em=3,” a phenotypic marker pedipalp patella. All studied forms strongly supported as single clade...
The original description of the Arizona scorpion species Vaejovis lapidicola Stahnke, 1940 consists a single paragraph. Furthermore, holotype for this was never designated. To remedy this, two syntypes V. were obtained study. A male syntype is redescribed and designated lectotype, female assigned as paralectotype. taxonomic status also confirmed.