Article
Multidisciplinary Sciences
Zimai Li, Bhoomika Bhat, Erik T. Frank, Thalita Oliveira-Honorato, Fumika Azuma, Valerie Bachmann, Darren J. Parker, Thomas Schmitt, Evan P. Economo, Yuko Ulrich
Summary: Individual behavior variations contribute to the different infection risks in social groups, and infections can affect the social organization and division of labor within a colony.
NATURE COMMUNICATIONS
(2023)
Article
Behavioral Sciences
Anshuman Swain, Sara D. Williams, Louisa J. Di Felice, Elizabeth A. Hobson
Summary: In animal societies, individuals take on different roles to meet their own needs and the needs of their group. Ant colonies exhibit high levels of organizational complexity, with individual ants fulfilling various roles over time. This study explores the relationship between interaction networks, task allocation, and task switching in ant colonies, shedding light on the impact of information flow on task allocation.
Article
Ecology
Barbara Casillas-Perez, Christopher D. Pull, Filip Naiser, Elisabeth Naderlinger, Jiri Matas, Sylvia Cremer
Summary: Infections early in life can have lasting effects on an organism's development and immunity, including social insect colonies. High brood rearing efforts can interfere with the queen's immune system, while early-life pathogen exposure can improve the immunocompetence of her worker offspring. Transgenerational transfer of the queen's pathogen experience can reduce the disease susceptibility of the entire superorganism.
Article
Energy & Fuels
Solomon Netsanet, Zheng Dehua, Zhang Wei, Girmaw Teshager
Summary: In this paper, a new method is proposed to forecast the output power of a PV system by integrating Artificial Neural Network (ANN) with data processing, input variable selection, and external optimization techniques. The original data is decomposed into stable components using Variational mode decomposition (VMD), and the input variable selection is accomplished through mutual information (MI). The weights and biases of the ANN are optimized through Ant colony optimization (ACO). The empirical analysis shows that this method can predict the PV power more accurately.
Article
Business, Finance
I-Hsuan Ethan Chiang, Chris Kirby, Ziye Zoe Nie
Summary: High-turnover stocks are more liquid compared to low-turnover stocks and their returns are more reflective of news-driven trading activity. Short-term reversals mainly stem from short-term liquidity demands, while news-driven returns tend to continue. Turnover acts as a proxy for liquidity and news-driven trading activity.
JOURNAL OF BANKING & FINANCE
(2021)
Article
Ecology
Rodolfo Bizarria Jr, Tatiane de Castro Pietrobon, Andre Rodrigues
Summary: Yeast diversity in attine ant environments was assessed by sampling fungus gardens across different fungiculture systems. Taxonomically unique and diverse yeast communities were found in the fungus gardens of all ants examined. Different ant colonies and fungiculture systems harbored distinct yeast communities. Killer yeasts were also identified, exhibiting a classical inhibition pattern. These findings highlight the importance of studying yeast diversity and ecology in attine ant fungus gardens.
Article
Multidisciplinary Sciences
Asaf Gal, Daniel J. C. Kronauer
Summary: This study reveals the collective sensory response threshold of ant colonies and uncovers the mechanism behind it, which is regulated by social feedback between ants. By building a network model, researchers demonstrate that the balance between short-range excitatory and long-range inhibitory interactions is responsible for the emergence of the collective response threshold and its size dependency.
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2022)
Review
Biology
Biplabendu Das, Deborah M. Gordon
Summary: Task allocation in ant colonies is regulated by social interactions and synchronized to daily temporal patterns. An ant's biological clock is influenced by gene expression patterns and can shift in response to social cues, contributing to task switching. Daily rhythms in individual ant behavior adjust the collective behavior of colonies. Further research is needed to understand the molecular mechanisms behind task switching and how ecological factors influence temporal patterns in task allocation.
CURRENT OPINION IN INSECT SCIENCE
(2023)
Article
Multidisciplinary Sciences
Jessica M. Kendall-Bar, Terrie M. Williams, Ritika Mukherji, Daniel A. Lozano, Julie K. Pitman, Rachel R. Holser, Theresa Keates, Roxanne S. Beltran, Patrick W. Robinson, Daniel E. Crocker, Taiki Adachi, Oleg I. Lyamin, Alexei L. Vyssotski, Daniel P. Costa
Summary: Marine mammals, such as the northern elephant seals, have very short sleep durations while at sea, with an average of only 2 hours per day for 7 months, which is comparable to the sleep record of African elephants.
Article
Multidisciplinary Sciences
Caleb Anderson, Guillermo Goldsztein, Alberto Fernandez-Nieves
Summary: This article explores solitary waves in dense two-dimensional columns of Solenopsis invicta, fire ants, and reveals the importance of local activity, density, and alignment in wave propagation. The findings suggest that intrinsically switchable activity can be a productive framework to understand and trigger a broad range of wave-like behaviors.
Article
Urban Studies
Paloma Taltavull de La Paz, Eloisa Norman Mora, Zhenyu Su, Raul Perez Sanchez, Francisco Juarez Tarraga
Summary: This paper presents new evidence on the short-term rental market's prices and transactions in 39 European cities from 2015 to 2020, using daily time-series data from Airbnb. The study establishes time-series cycles of total bookings, rental units supply, and asking rent for each city, revealing the periods of high short-term rental activity and the variations in rents across Europe. The findings suggest a long-term relationship among city variables, supporting the notion that the short-term rental market operates according to housing market principles. The study also provides causal evidence of co-movements among rents, rental contracts, and property supply and demand across the 39 cities.
Article
Ecology
Terry J. Ord
Summary: Maintaining a central refuge such as a nest or burrow can provide protection but limit the ability to disperse. Long-lived ant colonies that build large nests are susceptible to changing environmental conditions. The Australian meat ant population exhibited a surge in nest production during drought, allowing colonies to relocate to more favorable areas. This strategy may be important for central place foragers to track preferred conditions in the face of climate change.
FUNCTIONAL ECOLOGY
(2023)
Article
Computer Science, Artificial Intelligence
Nicolas Rojas-Morales, Maria-Cristina Riff, Elizabeth Montero
Summary: A collaborative framework called Multiple Opposite Synergic Strategy for Ants (MOSSA) is proposed in this paper to improve the search process of ant-based algorithms using multiple Opposition-Inspired Learning strategies. By collaborating different strategies, the ants algorithm shows better performance in solving Constraint Satisfaction Problems.
KNOWLEDGE-BASED SYSTEMS
(2021)
Article
Construction & Building Technology
Milad Shakiba, Amirhossein Hajmoosa, Mussa Mahmoudi, Milad Bazli, Mohsen Ebrahimzadeh
Summary: GFRP stirrups are a promising alternative to steel stirrups due to their non-corrosive nature. This study evaluates their tensile strength under wet-dry and freeze-thaw cycles in seawater.
CONSTRUCTION AND BUILDING MATERIALS
(2023)
Review
Anesthesiology
Lou Cathenaut, Remy Schlichter, Sylvain Hugel
Summary: Somatosensory information is efficiently processed in the spinal cord by frequency-tuned synapses, which display activity-dependent forms of short-term plasticity. These properties allow for powerful gain control in neuronal networks and contribute to the integration of nociceptive messages and the effectiveness of nonpharmacological analgesic procedures.
Review
Multidisciplinary Sciences
Sebastian Stockmaier, Nathalie Stroeymeyt, Eric C. Shattuck, Dana M. Hawley, Lauren Ancel Meyers, Daniel I. Bolnick
Summary: The spread of contagious pathogens is influenced by social interactions, with changes in behavior affecting disease transmission. Both humans and nonhuman animals exhibit pathogen-induced alterations in social behavior, highlighting the importance of understanding these effects for evolution and epidemiology.
Article
Biochemical Research Methods
Judith A. Bouman, Julien Riou, Sebastian Bonhoeffer, Roland R. Regoes
Summary: The presence of SARS-CoV-2 specific antibodies is essential for determining the extent of an infection, and a new method has been introduced to more reliably estimate cumulative incidence and infer specific types of cases, addressing the shortcomings of serological tests.
PLOS COMPUTATIONAL BIOLOGY
(2021)
Article
Biology
Peter Ashcroft, Sonja Lehtinen, Daniel C. Angst, Nicola Low, Sebastian Bonhoeffer
Summary: This study quantifies the impact of quarantine duration on the transmission of SARS-CoV-2 by considering factors such as incubation period, infectivity, and generation time. The findings suggest that quarantine strategies based on a test-and-release protocol perform almost as well as a 10-day quarantine in terms of epidemiological effectiveness, with fewer person-days spent in quarantine.
Article
Biology
Thomas O. Richardson, Andrea Coti, Nathalie Stroeymeyt, Laurent Keller
Summary: The relationship between task performance and teamwork in ant colonies is investigated. The study reveals that leadership, specifically the consistency of leaders, influences tandem performance, but 'followership' does not.
COMMUNICATIONS BIOLOGY
(2021)
Article
Infectious Diseases
Joao Pires, Jana S. Huisman, Sebastian Bonhoeffer, Thomas P. Van Boeckel
Summary: This study inferred the global resistance trends in Escherichia coli in food animals using genomes from public databases. The results showed that multidrug resistance increased by 1.6 times between 1980 and 2018, with the highest resistance levels observed for tetracyclines, penicillins, and streptomycin. The resistance trends remained consistent after accounting for selection bias. Additionally, the estimated resistance prevalence inferred from genomes in the public domain was in good agreement with reports from systematic phenotypic surveillance.
JOURNAL OF ANTIMICROBIAL CHEMOTHERAPY
(2022)
Article
Biology
Claudia Igler, Jana S. Huisman, Berit Siedentop, Sebastian Bonhoeffer, Sonja Lehtinen
Summary: This article reviews the biological processes and mathematical models of plasmid co-infection, and discusses potential pitfalls in modeling. Research shows that co-infection plays an important role in frequency-dependent selection of plasmid variants.
PHILOSOPHICAL TRANSACTIONS OF THE ROYAL SOCIETY B-BIOLOGICAL SCIENCES
(2022)
Article
Infectious Diseases
Judith A. Bouman, Sarah Kadelka, Silvia Stringhini, Francesco Pennacchio, Benjamin Meyer, Sabine Yerly, Laurent Kaiser, Idris Guessous, Andrew S. Azman, Sebastian Bonhoeffer, Roland R. Regoes
Summary: This study applied mixture model methods to analyze SARS-CoV-2 serosurvey data, providing insights into the total cumulative incidence and an indirect indicator of disease severity among different age groups. The results demonstrate that mixture model methods can provide additional information from serosurvey data.
Article
Biochemical Research Methods
Helene Chabas, Viktor Mueller, Sebastian Bonhoeffer, Roland R. R. Regoes
Summary: Bacteria have adaptive immunity against phages through CRISPR-Cas immune systems. Different types of CRISPR-Cas systems have molecular differences that affect the outcome of phage infection and the evolutionary pressure. The probability of acquiring resistance spacer plays a crucial role in phage extinction. Type III CRISPR-Cas systems exhibit a rapid phage extinction driven by spacer acquisition, while type I/II systems have a threshold-like behavior. Autoimmunity affects the acquisition rates. In a biologically relevant parameter range, type III systems can outcompete type I/II systems with a slightly higher acquisition probability.
PLOS COMPUTATIONAL BIOLOGY
(2022)
Article
Biology
Jana S. Huisman, Jeremie Scire, Daniel C. Angst, Jinzhou Li, Richard A. Neher, Marloes H. Maathuis, Sebastian Bonhoeffer, Tanja Stadler, Miles P. Davenport
Summary: This study presents a method for timely estimation of the effective reproductive number (Re) in the COVID-19 epidemic, and evaluates it on a global scale. The results show that in most countries, the estimated Re dropped below 1 only after the introduction of major non-pharmaceutical interventions. For Europe, the implementation of these interventions was associated with reductions in the estimated Re. However, the effects of relaxing non-pharmaceutical interventions on subsequent Re estimates varied globally.
Article
Ecology
Joanito Liberti, Tomas Kay, Andrew Quinn, Lucie Kesner, Erik T. Frank, Amelie Cabirol, Thomas O. Richardson, Philipp Engel, Laurent Keller
Summary: This study reveals that the gut microbiota affects the social behavior of honeybees. Microbiota colonization increases the rate and specialization of head-to-head interactions between bees, and is associated with higher abundances of metabolites in the brain that play roles in social interactions. Microbiota colonization also affects brain transcriptional processes and epigenetic modifications related to amino acid metabolism and sensory perception in honeybees.
NATURE ECOLOGY & EVOLUTION
(2022)
Article
Multidisciplinary Sciences
Thomas O. Richardson, Nathalie Stroeymeyt, Alessandro Crespi, Laurent Keller
Summary: Ant and honeybee workers use context-dependent rules to navigate inside the nest and avoid straying into the wrong zone.
NATURE COMMUNICATIONS
(2022)
Article
Multidisciplinary Sciences
Nobuaki Mizumoto, Yasunari Tanaka, Gabriele Valentini, Thomas O. Richardson, Sumana Annagiri, Stephen C. Pratt, Hiroyuki Shimoji
Summary: This study used network and information-theoretic analysis to quantify the differences in tandem recruitment behavior between two ant genera, Temnothorax and Diacamma. It was found that Temnothorax uses tandem running to recruit additional recruiters, while Diacamma primarily uses it to move the passive majority of their colony. Furthermore, the information-theoretical analysis revealed that Diacamma tandem runs lack bidirectional information transfer, unlike Temnothorax which exhibits route learning.
Article
Multidisciplinary Sciences
Peter Ashcroft, Sebastian Bonhoeffer
Summary: The divisional load of cells and the hierarchical structure of tissue have significant impact on reducing cancer incidence. It is found that minimizing the number of cell divisions and increasing stem cell turnover can decrease mutational risk and divisional load.
JOURNAL OF THE ROYAL SOCIETY INTERFACE
(2022)