Article
Ecology
Hannes Wolfgramm, Jochen Martens, Till Toepfer, Melita Vamberger, Abhinaya Pathak, Heiko Stuckas, Martin Paeckert
Summary: A population genetic analysis was conducted for the coal tit hybrid zone in Nepal, revealing genetic admixture of western and eastern mitochondrial lineages restricted to a narrow zone of phenotypically intermediate populations. Allelic introgression of microsatellite loci was asymmetrical from eastern into far western populations, leading to a wider microsatellite cline than the mitochondrial one.
ECOLOGY AND EVOLUTION
(2021)
Article
Computer Science, Artificial Intelligence
Erol Egrioglu, Eren Bas
Summary: A new hybrid recurrent artificial neural network is proposed for nonlinear time series forecasting in this study. The network combines simple exponential smoothing and a single multiplicative neuron model to solve the insufficiency of classical forecasting methods in forecasting nonlinear and complex time series structures. The proposed method outperforms other artificial neural networks in terms of performance.
NEURAL COMPUTING & APPLICATIONS
(2023)
Article
Acoustics
Hongyu Yan, Suchao Xie, Zhen Li, Zhejun Feng, Kunkun Jing, Fengyi Zhang
Summary: A stepped-type multi-cavity combined sound absorber (SMCSA) was developed to enhance the low and mid-frequency sound absorption capabilities of micro-perforated panels. The sound absorption characteristics of the SMCSA were thoroughly studied using experimental methods, theoretical calculations, and numerical simulations. The SMCSA parameters were optimized using the particle swarm optimization algorithm. The results showed that the board thickness, hole size, and cavity depth had significant effects on the sound absorption properties of the SMCSA. When the hole size ranged from 0.4-0.6 mm, the SMCSA achieved a sound absorption coefficient of 0.9 and resonance frequency of 600-800 Hz. After optimization using the hybrid particle swarm algorithm, the maximum sound absorption coefficients at the resonance frequency for the two-step, four-step, and eight-step structures were all 0.99.
JOURNAL OF VIBRATION AND CONTROL
(2023)
Article
Computer Science, Information Systems
Tzyy-Chyang Lu, Shyh-Leh Chen
Summary: The study utilizes particle swarm optimization to find the optimal corner path and speed, and converts axis constraints into polynomial inequalities for handling. A look-up table is established for real-time operation.
Article
Zoology
Uwe Fritz, L. Lee Grismer, Marika Asztalos
Summary: This study investigated whether coloration and pattern can reliably differentiate between Natrix natrix and N. helvetica. The results showed that these two species can be distinguished based on certain diagnostic traits. The distributions of morphologically identified N. natrix and N. helvetica matched their genetically confirmed ranges.
VERTEBRATE ZOOLOGY
(2023)
Article
Computer Science, Artificial Intelligence
Zhuoxuan Li, Jinde Cao, Xinli Shi, Wei Huang
Summary: Accurate assessment of road conditions can effectively alleviate traffic congestion and guide people's travel plans, traffic control decisions of transportation departments, and formulation of traffic-related laws and regulations.
Article
Automation & Control Systems
Gregor Klancar, Marija Seder, Saso Blazic, Igor Skrjanc, Ivan Petrovic
Summary: The HE* algorithm is a hybrid path-planning algorithm that combines grid search and continuous curve elements to produce drivable paths with completeness guarantee. In experiments, HE* algorithm performs well and achieves good results even at coarse resolutions.
IEEE TRANSACTIONS ON SYSTEMS MAN CYBERNETICS-SYSTEMS
(2021)
Article
Energy & Fuels
Bharti Dongre, Rajesh Kumar Pateriya
Summary: The study aims to develop site-specific power curves for wind turbines to estimate their output power. Various statistical methods were implemented, with results showing that the smoothing splines regression model outperforms other techniques.
Correction
Ornithology
Tyler S. Imfeld, F. Keith Barker, Robb T. Brumfield
Correction
Ornithology
Carlos Daniel Cadena, Andres M. Cuervo, Laura N. Cespedes, Gustavo A. Bravo, Niels Krabbe, Thomas S. Schulenberg, Graham E. Derryberry, Luis Fabio Silveira, Elizabeth P. Derryberry, Robb T. Brumfield, Jon Fjeldsa
Article
Biodiversity Conservation
Cameron D. Siler, Elyse S. Freitas, Tamaki Yuri, Lara Souza, Jessa L. Watters
Summary: This study describes the development and testing of qPCR assays for detecting four species of amphibians and reptiles in the South Central United States using environmental DNA samples. The assays demonstrated high specificity and sensitivity, with positive detections of some target species in field surveys, providing a practical tool for genetic monitoring of conservation concern species.
CONSERVATION GENETICS RESOURCES
(2021)
Article
Ecology
Glaucia Del-Rio, Marco A. Rego, Bret M. Whitney, Fabio Schunck, Luis F. Silveira, Brant C. Faircloth, Robb T. Brumfield
Summary: The study investigates the formation of hybrid zones between two obligate army-ant-followers, the White-breasted Antbird and the Harlequin Antbird, in the Amazon Basin. Major geographic displacement between mitochondrial and nuclear clines was observed, with potential causes including sampling error, genetic drift, and asymmetric cytonuclear incompatibilities. Data indicates expansion and unidirectional introgression of one species into the distribution of the other.
Article
Ecology
Nelson Buainain, Mateus Ferreira, Jorge E. Avendano, Carlos D. Cadena, Brant C. Faircloth, Robb T. Brumfield, Joel Cracraft, Camila C. Ribas
Summary: This study compares the diversification dynamics of montane and lowland populations of a songbird genus in the Neotropics and finds overall similarities in their evolutionary processes. The current taxonomic arrangement may underestimate species diversity within the genus.
JOURNAL OF BIOGEOGRAPHY
(2022)
Article
Multidisciplinary Sciences
Lukas J. Musher, Melina Giakoumis, James Albert, Glaucia Del-Rio, Marco Rego, Gregory Thom, Alexandre Aleixo, Camila C. Ribas, Robb T. Brumfield, Brian Tilston Smith, Joel Cracraft
Summary: The rearrangements of Amazonian river networks play an important role in promoting speciation and diversification of species. They facilitate divergence and secondary contact among populations, leading to the formation of micro-endemic and unrecognized taxa.
Article
Biochemistry & Molecular Biology
Andre E. Moncrieff, Brant C. Faircloth, Robb T. Brumfield
Summary: Recent molecular phylogenetic analysis of Lepidothrix manakins has helped clarify their evolutionary relationships, particularly the placement of L. coronata and the relationships within the L. nattereri + L. vilasboasi + L. iris clade. By using RADcap data, we established the subspecies-level phylogeny of Lepidothrix, confirming the monophyly of L. coronata and the presence of two biological species separated by the Andes. The relationships within the L. nattereri + L. vilasboasi + L. iris clade remained unresolved, indicating extensive allele sharing among these taxa. Additionally, we documented a rare hybridization event between L. coronata and L. suavissima.
MOLECULAR PHYLOGENETICS AND EVOLUTION
(2022)
Article
Evolutionary Biology
Brian Tilston Smith, Jon Merwin, Kaiya L. Provost, Gregory Thom, Robb T. Brumfield, Mateus Ferreira, William M. Mauck, Robert G. Moyle, Timothy Wright, Leo Joseph
Summary: This study investigates the factors influencing gene tree discordance in the parrots. The researchers found that the most common occurrence of discordance in tree topologies was at nodes dating between the late Miocene and Pliocene, often at the taxonomic level of the genus. By quantifying the information content in each tip, they were able to identify instances of topological conflict and nonmonophyletic genera in the species tree. The results also showed that noise played a more important role in supporting alternative topologies when signal favored one of the topologies.
SYSTEMATIC BIOLOGY
(2023)
Article
Biochemistry & Molecular Biology
Jessie F. Salter, Peter A. Hosner, Whitney L. E. Tsai, John E. McCormack, Edward L. Braun, Rebecca T. Kimball, Robb T. Brumfield, Brant C. Faircloth
Summary: Phylogenomics with historical specimen-driven analysis is becoming increasingly important in filling gaps in evolutionary history of diverse groups. Analyzing subclades can help distinguish artifactual causes of discordance introduced by historical samples.
MOLECULAR PHYLOGENETICS AND EVOLUTION
(2022)
Article
Evolutionary Biology
Min Zhao, Sarah M. Kurtis, Noor D. White, Andre E. Moncrieff, Rafael N. Leite, Robb T. Brumfield, Edward L. Braun, Rebecca T. Kimball
Summary: This study focuses on the phylogenetic relationships between Antilophia and Chiroxiphia genera in manakins. By analyzing more than 11,000 loci from whole genomes and applying different analytical methods, the study reveals the importance of identifying factors that can affect phylogenetic signal when dealing with complex phylogenetic problems.
SYSTEMATIC BIOLOGY
(2023)
Article
Biochemistry & Molecular Biology
Oscar Johnson, Camila C. C. Ribas, Alexandre Aleixo, Luciano N. N. Naka, Michael G. G. Harvey, Robb T. T. Brumfield
Summary: Understanding the factors that influence genetic structure across species is essential for studying speciation and population genetics. This study examined population genetic data from bird species specialized in different Amazonian habitat types. The results showed that habitat type significantly affects population genetic structure, with species in more dynamic habitats having higher levels of gene flow. These differences in genetic variation across taxa specialized in distinct habitats could lead to divergent responses to environmental change and habitat-specific diversification dynamics over time.
Article
Biochemistry & Molecular Biology
Jessie F. F. Salter, Robb T. T. Brumfield, Brant C. C. Faircloth
Summary: Humans have significantly affected the distribution of plant and animal species, mainly through the translocation of individuals and the introduction of species to new habitats. This has made it challenging to understand the evolutionary history of populations and their biogeographical patterns. Studies combining genetic data with archaeological, linguistic, and historical evidence have confirmed prehistoric examples of human-mediated dispersal, but it remains uncertain whether these methods can distinguish recent dispersal events.
Article
Ecology
Andre E. Moncrieff, Brant C. Faircloth, Rosalind C. Remsen, Anna E. Hiller, Cristhian Felix, Angelo P. Capparella, Alexandre Aleixo, Thomas Valqui, Robb T. Brumfield
Summary: Rivers often serve as geographic boundaries and genetic barriers for species in the Amazon Basin, but these boundaries can break down in narrower headwater regions. A study on the Blue-capped Manakin in the western Amazon Basin found that rivers, especially the Amazon and Ucayali, act as dispersal barriers for the species. However, headwater regions show increased genetic connectivity, suggesting the importance of headwater gene flow in the diversification of the Amazon rainforest. The Ucayali River headwater region stood out as an exception, with non-admixed populations of the species on opposite sides of a narrow river channel, possibly due to additional prezygotic barriers limiting gene flow.
Review
Ornithology
Eamon C. Corbett, Robb T. Brumfield, Brant C. Faircloth
Summary: This article summarizes the causes of avian eye colour variation at three levels: mechanistic, genetic, and evolutionary. Mechanistically, avian iris pigments include melanin and carotenoids. Genetically, potential eye colour genes have been identified through breeding studies and genomic research. Evolutionarily, several hypotheses have been proposed to explain the adaptive significance of eye colour variation.
Article
Genetics & Heredity
Elisa C. Elizondo, Brant C. Faircloth, Robb T. Brumfield, Subir B. Shakya, Vincenzo A. Ellis, Carl J. Schmidt, Adrienne Kovach, W. Gregory Shriver
Summary: This article introduces a secretive marsh bird species called the clapper rail, which is adapted to high salinity habitats. The clapper rail and its closely related species, the king rail, have similar appearances but different habitat preferences. The author assembled the clapper rail's genome to investigate the mechanisms behind its salt tolerance and the maintenance of the species boundary between the two rail species.
G3-GENES GENOMES GENETICS
(2023)