Great Tit () Nestlings Have Longer Telomeres in Old-Growth Forests Than in Young Forests.

Modification and deterioration of old-growth forests by industrial forestry have seriously threatened species diversity worldwide. The loss of natural habitats increases the concentration of circulating glucocorticoids and incurs chronic stress in animals, influencing the immune system, growth, survival, and lifespan of animals inhabiting such areas. In this study, we tested whether great tit () nestlings grown in old-growth unmanaged coniferous forests have longer telomeres than great tit nestlings developing in young managed coniferous forests.

Corrigendum: Development under predation risk increases serotonin-signaling, variability of turning behavior and survival in adult fruit flies .

[This corrects the article DOI: 10.3389/fnbeh.2023.

A diabetes-like biochemical and behavioural phenotype of induced by predator stress.

Predation can have both lethal and non-lethal effects on prey. The non-lethal effects of predation can instil changes in prey life history, behaviour, morphology and physiology, causing adaptive evolution. The chronic stress caused by sustained predation on prey is comparable to chronic stress conditions in humans.

Development under predation risk increases serotonin-signaling, variability of turning behavior and survival in adult fruit flies .

The development of high-throughput behavioral assays, where numerous individual animals can be analyzed in various experimental conditions, has facilitated the study of animal personality. Previous research showed that isogenic flies exhibit striking individual non-heritable locomotor handedness. The variability of this trait, i.

Physiological stress and higher reproductive success in bumblebees are both associated with intensive agriculture.

Free-living organisms face multiple stressors in their habitats, and habitat quality often affects development and life history traits. Increasing pressures of agricultural intensification have been shown to influence diversity and abundance of insect pollinators, and it may affect their elemental composition as well. We compared reproductive success, body concentration of carbon (C) and nitrogen (N), and C/N ratio, each considered as indicators of stress, in the buff-tailed bumblebee ().

Dominance of Fructose-Associated in the Gut Microbiome of Bumblebees () Inhabiting Natural Forest Meadows.

Bumblebees are key pollinators in agricultural landscapes. However, little is known about how gut microbial communities respond to anthropogenic changes. We used commercially produced colonies of buff-tailed bumblebees () placed in three habitats.

Ecological Stoichiometry of Bumblebee Castes, Sexes, and Age Groups.

Ecological stoichiometry is important for revealing how the composition of chemical elements of organisms is influenced by their physiological functions and ecology. In this study, we investigated the elemental body composition of queens, workers, and males of the bumblebee , an important pollinator throughout Eurasia, North America, and northern Africa. Our results showed that body elemental content differs among castes.

Serotoninergic Modulation of Phototactic Variability Underpins a Bet-Hedging Strategy in .

When organisms' environmental conditions vary unpredictably in time, it can be advantageous for individuals to hedge their phenotypic bets. It has been shown that a bet-hedging strategy possibly underlies the high inter-individual diversity of phototactic choice in . This study shows that fruit flies from a population living in a boreal and relatively unpredictable climate have more variable variable phototactic biases than fruit flies from a more stable tropical climate, consistent with bet-hedging theory.

Analysis of cardiac and pulmonary complication probabilities after radiation therapy for patients with early-stage breast cancer.

Objective: The purpose of this study was to evaluate the radiobiological implications of clinical use of respiratory-gated techniques for postoperative radiation therapy of early-stage left-sided breast cancer after breast-conserving surgery.

Material And Methods: Radiation therapy treatment plans of 80 patients with early-stage breast cancer (stage I-II), receiving whole breast irradiation after breast-conserving therapy, were analyzed. The control group consisting of 47 patients received standard radiation therapy, and the respiratory-gated group consisting of 33 patients received deep inspiration-gated radiation therapy.