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Corticosterone predicts double-brooding in female savannah sparrows (Passerculus sandwichensis).
Horm Behav
January 2025
Department of Integrative Biology, University of Guelph, 50 Stone Road, E, Guelph, Ontario N1G 2W1, Canada.
Given that double-brooding (rearing two broods within a season) can increase annual fecundity, it is unclear why some females in multi-brooded populations rear only one brood per season. The Quality Hypothesis proposes that double-brooded females are high quality and, thus, have sufficient energetic resources available to bear the costs of rearing two broods per season. Glucocorticoids - endocrine hormones that have a critical role in energy regulation - could reflect female quality, and, therefore, also have the potential to indicate whether a female will rear a second brood.
View Article and Find Full Text PDFPhysiological impact of secondary nanoplastics on aquatic inhabitants in special reference to immunotoxicity.
Environ Monit Assess
January 2025
Department of Animal Sciences, School of Life Sciences, Central University of Himachal Pradesh, Kangra, 176206, India.
Nanoplastic (NP) pollution poses serious health hazards to aquatic ecosystems, impacting various physiological systems of aquatic organisms. This review examines the complex interplay between NPs and different physiological systems. In the digestive system, NPs downregulate the hsp70-like gene in Mytilus galloprovincialis, leading to decreased metabolic processes and impaired digestion.
View Article and Find Full Text PDFEfficacy of Army Combat Fitness Test 12-Week Exercise Program Among Females.
Mil Med
January 2025
University of North Carolina Wilmington, Wilmington, NC 28403, USA.
Introduction: The dearth of research investigating the efficacy of virtual Army Combat Fitness Test (ACFT) training programs among female populations necessitates further exploration. This study aims to evaluate the effectiveness of a 12-week ACFT virtual exercise program among female participants.
Materials And Methods: Nine female participants (age = 19.
Assessing the threat of harboring a multi-resistant IncC plasmid and the efficacy of an antibiotic targeting LpxC.
Antimicrob Agents Chemother
January 2025
Univ. of Lille, CNRS, Inserm, CHU Lille, Institut Pasteur de Lille, U1019-UMR 9017-CIIL-Center for Infection and Immunity of Lille, Lille, France.
Self-transmissible IncC plasmids rapidly spread multidrug resistance in many medically important pathogens worldwide. A large plasmid of this type (pIP1202, ~80 Kb) has been isolated in a clinical isolate of , the agent of plague. Here, we report that pIP1202 was highly stable in infected mice and fleas and did not reduce virulence in these animals.
View Article and Find Full Text PDFParsing reward sensitivity reveals distinct relationships with energy intake, metabolic markers, physical activity and fitness.
Acta Neuropsychiatr
January 2025
Division of Neuropsychopharmacology, Department of Chemistry, University of Tartu, Tartu, Tartumaa, Estonia.
Rewards are rewarding owing to their hedonic or metabolic value. Individual differences in sensitivity to rewards are predictive of mental health problems but may reflect variation in metabolic types. We have assessed the association of two distinguishable aspects of reward sensitivity, openness to rewards (the striving towards multiple rewards) and insatiability by reward (the strong pursuit and fixation to a particular reward), with measures of metabolism and activity in a longitudinal study of representative birth cohort samples.
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