The hemlock woolly adelgid, Annand, is an invasive insect that threatens hemlock species in eastern North America. Several species from the genus are predators of in its native areas of Asia and the western United States. Two species have been released as biological control agents: Fender, and Montgomery and Shiyake. LeConte is an adelgid predator native to the Eastern United States, where it can feed and complete development on opportunistically. Laboratory assays were conducted to assess the cold hardiness of these three species, including two distinct populations of , by measuring the supercooling points of each species from November 2016 through March 2017. This information may be useful for choosing the best-suited biological control agent for a particular region to control . There was a significant difference between the overall mean supercooling point of compared to the other spp. There were also significant differences of supercooling points between and both strains of in January, and significant differences between and all other strains in February. appear better adapted to cold extremes in the eastern U.S. than imported spp.
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http://dx.doi.org/10.3390/insects10120426 | DOI Listing |
Materials (Basel)
January 2025
School of Energy and Automotive Engineering, Shunde Polytechnic, Foshan 528300, China.
A novel organic-inorganic eutectic phase change material (PCM) based on sodium acetate trihydrate (SAT) and polyethylene glycol (PEG) was developed to meet the needs of heat recovery and building heating. Three kinds of PEG with different molecular weights were selected to form organic-inorganic eutectic PCM with SAT. The thermal properties of three series of SAT-PEG eutectic PCM were compared based on DSC results, focusing on the impact of PEG addition on the phase change temperature and enthalpy of SAT, as well as the melting uniformity.
View Article and Find Full Text PDFJ Phys Chem B
January 2025
Research Center for Advanced Science and Technology, The University of Tokyo, 4-6-1 Komaba, Meguro-ku, Tokyo 153-8904, Japan.
As a liquid is supercooled toward the glass transition point, its dynamics slow significantly, provided that crystallization is avoided. With increased supercooling, the particle dynamics become more spatially heterogeneous, a phenomenon known as dynamic heterogeneity. Since its discovery, this characteristic of metastable supercooled liquids has garnered considerable attention in glass science.
View Article and Find Full Text PDFHistia rhodope (Cramer) (Lepidoptera: Zygaenidae) is one of the most destructive defoliating pests of the landscape tree Bischofia polycarpa (Levl.) S in China and other Southeast Asian regions, posing a critical threat to urban landscapes and their ecological benefits. This pest has shown a trend of northward range shift in recent years in China, making it urgent to understand its potential distribution.
View Article and Find Full Text PDFInsect Sci
November 2024
Department of Zoology, University of Seville, Seville, Spain.
Species distributed across wide elevational gradients are likely to experience local thermal adaptation and exhibit high thermal plasticity, as these gradients are characterised by steep environmental changes over short geographic distances (i.e., strong selection differentials).
View Article and Find Full Text PDFProc Natl Acad Sci U S A
November 2024
Dipartimento di Fisica, Universitá degli Studi di Trieste, Trieste 34127, Italy.
The distinctive characteristics of water, evident in its thermodynamic anomalies, have implications across disciplines from biology to geophysics. Considered a valid hypothesis to rationalize its unique properties, a liquid-liquid phase transition in water below the freezing point, in the so-called supercooled regime, has nowadays been observed in several molecular dynamics simulations and is being actively researched experimentally. The hypothesis of ferroelectric phase transition in supercooled water can be traced back to 1977, due to Stillinger.
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