Results 31 to 40 of about 1,330,011 (333)

Geographic variation in walking activity in the red flour beetle Tribolium castaneum

Population Ecology, EarlyView.
This study examined whether there is geographic variation in field populations, focusing on the moving activity in the red flour beetle Tribolium castaneum. Results showed significant differences in moving activity among field populations but no correlation with latitude or meteorological factors.
Kentarou Matsumura
wiley   +1 more source

Proceedings of the 30th National Conference of the Italian Group for the Study of Neuromorphology “Gruppo Italiano per lo Studio della Neuromorfologia” G.I.S.N. Torino, November 12-14, 2020

European Journal of Histochemistry, 2020
Proceedings of the 30th National Conference of the Italian Group for the Study of Neuromorphology “Gruppo Italiano per lo Studio della Neuromorfologia” G.I.S.N., November 12-14, 2020, University of Torino, Torino (Virtual Event) - Italy.
Conference Chair: Giancarlo Panzica
doaj   +1 more source

Logical Methods in Computer Science – Erfahrungsbericht über die Gründung einer internationalen Open-Access-Zeitschrift

Library Ideas, 2023
Logical Methods in Computer Science ist eine wissenschaftsgesteuerte Diamond-Open-Access-Zeitschrift im Gebiet der Theoretischen Informatik. Wir berichten über die Entwicklung der Zeitschrift seit ihrer Gründung in 2004 und stellen Herausforderung und ...
Wolfgang Thomas, Stefan Milius
doaj   +1 more source

occumb: An R package for site occupancy modeling of eDNA metabarcoding data

Population Ecology, EarlyView.
This study introduces a new R package, occumb, for the convenient application of site occupancy modeling using environmental DNA (eDNA) metabarcoding data. We outline a data analysis workflow, including data setup, model fitting, model assessment, and comparison of potential study settings based on model predictions, all of which can be performed using
Keiichi Fukaya, Yuta Hasebe
wiley   +1 more source

Proceedings of the National Academy of Sciences

Science, 1914
The structure of hyaluronic acid has been elucidated largely by the work of Meyer and collaborators,1' 2, I who have shown it to be a linear polymer of alternating units of N-acetyl-D-glucosamine and D-glucuronic acid.
Fred L. Whipple
semanticscholar   +1 more source

Between Droughts and Floods: The Seasonal Response of Freshwater Snails in Artificial Reservoirs in the Brazilian Semiarid Region

Population Ecology, EarlyView.
We investigate the seasonal dynamics of two freshwater snails, Biomphalaria straminea and Melanoides tuberculata, in artificial reservoirs of the Brazilian semiarid region. Despite regulated hydrology, B. straminea exhibited strong seasonal fluctuations associated with dry periods, while M. tuberculata maintained stable populations throughout the year,
Lucas Henrique Sousa da Silva, João Hemerson de Sousa, Adriana Josefa da Rocha, Manuella Feitosa Leal, Lucas Ariel de Sousa Aguiar, Tamaris Gimenez Pinheiro, Edson Lourenço da Silva   +6 more
wiley   +1 more source

PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES.

Science
Vitamins of the B12 (cyanocobalamin) group apparently participate in several metabolic processes.1 For example, Helleiner and Woods2 reported that a cellfree extract of an Escherichia coli mutant, which requires either methionine or vitamin B12 for ...
V. Gates, .. M. L. Ludwig, J. A. Hartsuck, T. A. Steitz, H. Muirhead, J. C. Coppola, G. N. Reeke, W. N. Lipscomb, Michael G Rossmann, Barbara A. Jeffery, Peter Main, Stephen Warren, F. Quiocho, William H. Bishop, Frederic M. Richards   +14 more
semanticscholar   +1 more source

Moving in the Dark: Enlightening the Spatial Population Ecology of European Cave Salamanders

Population Ecology, EarlyView.
We assessed individual interactions, movement ecology and activity patterns of a subterranean population of Speleomantes strinatii, applying spatial capture–recapture modeling to a photographic dataset of 104 individuals. ABSTRACT Space use and movement are fundamental aspects of organisms' ecology, mirroring individual fitness, behavior, and life ...
Giacomo Rosa, Andrea Costa, Sebastiano Salvidio   +2 more
wiley   +1 more source

Infection Models for Pine Wilt Disease on the Basis of Vector Behaviors

Population Ecology, EarlyView.
Infection models for pine wilt disease without vector density were built to estimate the transmission coefficient of the pathogenic nematode. The models successfully simulated the annual change in the density of infected trees for four pine stands. ABSTRACT Pine wilt disease is caused by the pinewood nematode (Bursaphelenchus xylophilus Steiner et ...
Katsumi Togashi
wiley   +1 more source

Speciation Through the Lens of Population Dynamics: A Theoretical Primer on How Small and Large Populations Diverge

Population Ecology, EarlyView.
Population size and dynamics fundamentally shape speciation by influencing genetic drift, founder events, and adaptive potential. Small populations may speciate rapidly due to stronger drift, whereas large populations harbor more genetic diversity, which can alter divergence trajectories. We highlight theoretical models that incorporate population size
Ryo Yamaguchi, Hidaka Kubo, Tokuya Ogawa, Hayate Omura   +3 more
wiley   +1 more source