Article
Behavioral Sciences
Abbigail M. Turner, Alexander J. Di Giovanni, Nicholas D. Antonson, Hannah M. Scharf, Mikus Abolins-Abols, Mark E. Hauber
Summary: Avian obligate brood parasites rely on other species to raise their offspring. In turn, many brood parasite hosts have evolved defensive behaviors to reduce the costs of brood parasitism, yet the proximate bases underlying these defenses remain poorly understood. Recent studies suggest that corticosterone may play a key role in mediating anti-parasitic defenses in birds, as elevated levels of this hormone are associated with increased rejection of foreign eggs. Future research is needed to further investigate the sensory and cognitive effects of corticosterone and other hormones on defense behaviors against avian brood parasitism.
HORMONES AND BEHAVIOR
(2022)
Article
Zoology
Alfredo Attisano, Nozomu J. Sato, Keita D. Tanaka, Yuji Okahisa, Keisuke Ueda, Roman Gula, Jorn Theuerkauf
Summary: Nestling rejection is a rare host defense strategy compared to egg rejection. The fan-tailed gerygone accepts nonmimetic eggs of its parasite but ejects mimetic parasite nestlings. Discrimination is based on egg size and auditory/visual cues, with rejection frequency increasing during the breeding season.
Article
Plant Sciences
Chunli Li, Yonghui Li, Xinwei Li, Li Ma, Yuanming Xiao, Chunhui Zhang
Summary: The study found that nitrogen (N) addition significantly promoted plant aboveground biomass in alpine grassland ecosystems, with a stronger response in restored grasslands compared to natural grasslands. In addition, the results suggested that climate warming could enhance plant biomass allocation to belowground under ongoing N deposition and highlighted the importance of precipitation for plant growth and aboveground biomass accumulation in restored alpine grasslands.
FRONTIERS IN PLANT SCIENCE
(2021)
Article
Behavioral Sciences
Abbigail M. Turner, Victoria N. Sluis, Emily J. Williams, Thomas J. Benson, Michael P. Ward, Mark E. Hauber
Summary: American robins are one of the few hosts that frequently reject foreign eggs from their nests. We used radio transmitters inside 3D-printed eggshells to study egg rejection behavior in female robins. Our results showed that female identity and model egg color had a significant effect on egg ejection, but did not predict ejection distance or direction. Understanding the egg ejection process will help us better understand host-parasite interactions.
Article
Environmental Sciences
Md Lokman Hossain, Jianfeng Li, Yangchen Lai, Carl Beierkuhnlein
Summary: Grassland ecosystems in northern China show varying levels of resistance and resilience to extreme climate events, such as droughts. Alpine and steppe grasslands exhibit higher resistance and lower resilience after extreme wet conditions, while lower resistance and higher resilience after extreme dry conditions. Hay meadows show stable resistance and resilience under climatic perturbations. Increasing trends of greenness were observed in alpine grassland, grass-dominated steppe, and hay meadow, while no significant changes were observed in arid and semi-arid steppes.
ENVIRONMENTAL MONITORING AND ASSESSMENT
(2023)
Article
Biodiversity Conservation
Brandi L. Van Roo
Summary: The Warbling Vireo, the smallest bird species in North America, has been found to eject Brown-headed Cowbird eggs from their nests. The geographic differences in behavior may be related to the distribution of two subspecies, and there is currently a lack of experimental studies on egg ejection in eastern populations.
NORTHEASTERN NATURALIST
(2021)
Article
Biology
Krystof Horak, Lukas Bobek, Marie Adamkova, Ondrej Kauzal, Tereza Kauzalova, Judith Pouadjeu Manialeu, Telesphore Benoit Nguelefack, Eric Djomo Nana, Knud Andreas Jonsson, Pavel Munclinger, David Horak, Ondrej Sedlacek, Oldrich Tomasek, Tomas Albrecht
Summary: Tropical bird species have slower feather growth rates and higher occurrence of stress-induced fault bars compared to their temperate zone counterparts. However, latitudinal migrants across the Sahara Desert exhibit similar feather growth patterns to temperate zone residents rather than tropical species at their breeding latitude.
PROCEEDINGS OF THE ROYAL SOCIETY B-BIOLOGICAL SCIENCES
(2022)
Article
Engineering, Biomedical
Yingrui Deng, Xiaoting Zhang, Rui Li, Zhuo Li, Boguang Yang, Peng Shi, Honglu Zhang, Chunming Wang, Chunyi Wen, Gang Li, Liming Bian
Summary: This study investigates the efficacy of biofunctionalizing a hyaluronic acid hydrogel with a synthetic Wnt5a mimetic ligand (Foxy5 peptide) to promote the chondrogenesis of human mesenchymal stem cells (hMSCs). The conjugation of Foxy5 peptide in the hydrogels activates non-canonical Wnt signaling, leading to enhanced expression of chondrogenic markers and metabolic activities of encapsulated hMSCs. Furthermore, Foxy5 peptide inhibits hypertrophy of chondrogenically induced hMSCs through multiple signaling pathways. These findings provide valuable insights for the rational design of bio-inductive scaffolds in regenerative medicine.
Article
Chemistry, Analytical
Juntae Kim, Dennis Semyalo, Tae-Gyun Rho, Hyungjin Bae, Byoung-Kwan Cho
Summary: This study aimed to detect internal egg abnormalities using visible and near-infrared spectrometry and optimize the measurement system parameters. The study found that the types of light sources and configuration design affect the accuracy of abnormal egg detection.
Article
Zoology
Nehafta Bibi, Faiq Jan, Munawar Saleem Ahmad, Haitao Wang
Summary: The majority of avian species are diurnal and adapt to variations in light intensities associated with daily, seasonal, or lunar cycles. A study comparing light intensity thresholds of activity in secondary cavity and non-cavity nesting passerines found that the former have lower activity thresholds than the latter. This sheds light on the potential impact of luminance on the visual performance of these two groups of birds.
PAKISTAN JOURNAL OF ZOOLOGY
(2021)
Article
Environmental Sciences
Ciara Tyrrell, Thi Thuy Do, Robert J. Leigh, Catherine M. Burgess, Fiona P. Brennan, Fiona Walsh
Summary: Land spreading of animal manure is a crucial process in agriculture, but the potential of grass phyllosphere as a reservoir of antimicrobial resistance (AMR) remains unknown. A field study was conducted to assess the impact of bovine, swine, and poultry manure application on the grass phyllosphere and soil microbiome and resistome. The results showed that manure treatment introduced clinically important antimicrobial resistance genes into grass and soil, and the temporal analysis indicated similar patterns across different manure types. The study highlights the role of grass phyllosphere as an understudied sink of AMR.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Environmental Sciences
Robin Lasters, Thimo Groffen, Lieven Bervoets, Marcel Eens
Summary: There are differences in egg PFAA profiles and concentrations between great tits and blue tits, likely reflecting differences in diet, foraging habits, and egg protein composition.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Multidisciplinary Sciences
Leonardo Fiusa de Morais, Ana Clara Rodrigues Cavalcante, Deodato do Nascimento Aquino, Felipe Herminio Meireles Nogueira, Magno Jose Duarte Candido
Summary: This study utilized remote sensing to analyze spectral responses and land cover change in fragments of Caatinga biome, showing higher SRB in infrared band and lower SRB in red and blue bands in Ouricuri. The classification model had high accuracy in detecting land cover changes in Ouricuri and Taua, indicating its effectiveness in identifying areas most affected by degradation and generating political support for conservation efforts in the Caatinga Biome.
SCIENTIFIC REPORTS
(2021)
Article
Chemistry, Multidisciplinary
Qian Shi, Yuanyuan Wu, Yunyun Xu, Min Bao, Xiao Chen, Kui Huang, Qiulan Yang, Yang Yang
Summary: We constructed a soccer-ball shaped virus-inspired DNA origami (ViDO) as a programmable non-LNP gene carrier. The ViDO with clustered five aptamers showed the highest transfection efficiency and induced competitive RNA silencing effect. Our results provided insights into the effects of aptamer distribution patterns on endocytosis and transfection, offering a programmable platform for optimizing the gene delivery system.
Article
Engineering, Multidisciplinary
Sertac Erman, Ali Demir, Ebru Ozbilge
Summary: The purpose of this research is to construct a numerical solution to the inverse problem of determining the right-hand side function of a non-linear fractional differential equation using Chelyshkov wavelets and over-measured data. The novelty lies in the use of Chelyshkov wavelets for this type of inverse problem. The problem is reduced to a system of algebraic equations with an unknown right-hand side using the orthonormal base of Chelyshkov wavelets, and by choosing suitable nodes, the system is transformed into a homogenous system. The numerical solution obtained by this method is remarkably close to the exact solution, as demonstrated by the examples.
ALEXANDRIA ENGINEERING JOURNAL
(2023)