In dequeened honeybee colonies ovarian activation occurs in some workers, and the pheromonal bouquets of these laying workers become more queen-like. In the Asiatic honeybee, Apis cerana, we compared the amount of 9-keto-2(E)-decenoic acid (9-ODA), a mandibular gland pheromone component, between non-laying workers from queenright colonies and laying workers from queenless colonies, and further, applied synthetic 9-ODA to workers to determine whether they discriminate workers with activated ovaries based on the level of this compound. Levels of 9-ODA were higher in laying workers from dequeened colonies than in non-laying workers from queenright colonies. In both queenright and queenless colonies, workers attacked more workers treated with 9-ODA than control-treated workers. These results suggest that detection of pseudoqueens in A. cerana is mediated by changes in 9-ODA.
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http://dx.doi.org/10.1007/s10886-010-9833-z | DOI Listing |
J Adv Nurs
January 2025
Key Laboratory of Birth Defects and Related Diseases of Women and Children (Sichuan University), Ministry of Education, Chengdu, China.
Aim: To identify the barriers and enablers in the implementation of evidence-based physical activity (PA) programmes for the improvement of health outcomes among pregnant women with gestational diabetes mellitus (GDM), and to develop strategies for implementing this evidence in clinical practice.
Methods: A convergent mixed-methods study was conducted, integrating a descriptive qualitative research design with a cross-sectional survey. In-depth interview was used to collect the views and cognitions about physical activity from medical staff, leaders and pregnant women.
Protoplasma
January 2025
Departamento de Biologia Geral, Universidade Federal de Viçosa, Viçosa, MG, 36570-900, Brazil.
Insect antennae play a crucial role in communication, acting as receptors for both chemical and physical cues. This sensory reception is facilitated by specialized cuticular structures known as sensilla, which exhibit diverse morphologies and functions. In ants, caste polymorphism and sexual dimorphism manifest in antennal structure.
View Article and Find Full Text PDFMPOX is an orthopoxvirus whose infection has been declared a Public Health Emergency of International Concern in 2022 and 2024. It proved to be a virus with markedly heterogeneous and varied clinical presentation. We performed a systematic PubMed review of articles reporting cases of different clinical manifestations of MPOX until October 2024.
View Article and Find Full Text PDFInt J Health Plann Manage
January 2025
Emma Children's Hospital, Amsterdam UMC, Vrije Universiteit, Amsterdam, The Netherlands.
Introduction: Sub-Saharan Africa is facing a severe crisis in human resources for health. Primary healthcare is the most affected. This problem is aggravated by absenteeism, implying that healthcare workers are absent on duty during scheduled working hours.
View Article and Find Full Text PDFTrop Med Health
January 2025
LaoLuxLab/Vaccine Preventable Diseases Laboratory, Institut Pasteur du Laos, Vientiane, Laos.
Background: Individuals with latent tuberculosis infection (LTBI) have a high risk of active infection, morbidity and mortality. Healthcare workers are a group who have increased risk of infection and onward transmission to their patients and other susceptible individuals; however, LTBI is often undiagnosed, and individuals are asymptomatic. Interferon gamma release assays (IGRA) can detect evidence of TB infection in otherwise asymptomatic individuals and are a good indication of LTBI.
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