Search results for "Behavior"

No uniform associations between parasite prevalence and environmental nutrients

2014

The resource quality of the host has been shown to affect parasite transmission success, prevalence, and virulence. Seasonal availability of environmental nutrients alters density and stoichiometric quality (carbon–nutrient ratios) of both producers and consumers, suggesting that nutrient availability may drive fluctuations in parasite prevalence patterns observed in nature. We examined the interactions between the population dynamics of a keystone herbivore, Daphnia, and its parasites, and their associations with water nutrient concentrations, resource quantity and quality, and other environmental variables (temperature, pH, oxygen concentration) in a small lake, using general linear model…

Genetic diversity in the wild : cyclic population dynamics and population isolation

2013

Item Response Trees: a recommended method for analyzing categorical data in behavioral studies

2015

Behavioral data are notable for presenting challenges to their statistical analysis, often due to the difficulties in measuring behavior on a quantitative scale. Instead, a range of qualitative alternative responses is recorded. These can often be understood as the outcome of a sequence of binary decisions. For example, faced by a predator, an individual may decide to flee or stay. If it stays, it may decide to freeze or display a threat and if it displays a threat, it may choose from several alternative forms of display. Here we argue that instead of being analyzed using traditional nonparametric statistics or a series of separate analyses split by response categories, this kind of data ca…

Kognitiivis-behavioraalisen esiintymisvalmennuskurssin vaikutus jännityksen hallintaan

1997

Chemical characterization of Anthemis parlatoreana fresh and dried aerial parts by GC and LC chromatographic techniques and evaluation of the antioxi…

2022

Anthemis parlatoreana was collected in the north west coast of Sicily. Fresh and dried aerial parts were subjected to distillation procedure for the extraction and isolation of essential oils. In both fresh and dried samples, the most abundant chemical classes were ketones and esters, represented to a greater extent by β-thujone and β-artemisia acetate, respectively. In dried vegetable material, a high content of α-pinene and δ3-carene was also registered. Aqueous, methanol and ethyl acetate extracts of aerial parts were also investigated in terms of polyphenolic content and antioxidant potential. All the extracts tested showed a quite different quali-quantitative profile and in terms of ch…

Transcriptional Rewiring, Adaptation, and the Role of Gene Duplication in the Metabolism of Ethanol of Saccharomyces cerevisiae

2020

Ethanol is the main by-product of yeast sugar fermentation that affects microbial growth parameters, being considered a dual molecule, a nutrient and a stressor. Previous works demonstrated that the budding yeast arose after an ancient hybridization process resulted in a tier of duplicated genes within its genome, many of them with implications in this ethanol “produce-accumulate-consume” strategy. The evolutionary link between ethanol production, consumption, and tolerance versus ploidy and stability of the hybrids is an ongoing debatable issue. The implication of ancestral duplicates in this metabolic rewiring, and how these duplicates differ transcriptionally, remains unsolved. Here, we …

Ethical culture and moral identity: how they interact and influence unethical behavior in organizations

2021

La ética es un pilar fundamental en el funcionamiento de cualquier organización. Sin embargo, hemos tenido conocimiento de prácticas poco éticas en diferentes empresas alrededor del mundo, y esto ha sacudido nuestra confianza en las empresas y los que las dirigen. Por ejemplo, el Índice de Percepción de la Corrupción 2019 presentado por Transparencia Internacional cada año revela que casi el 70% de los países evaluados obtuvieron calificaciones por debajo de 50, con una calificación promedio de 43 en una escala de cero a 100, donde cero significa alto nivel de corrupción (Transparencia Internacional, 2020). Además, ese comportamiento poco ético tiene costes para las propias empresas. Así, p…

Ethical Culture and Management

2022

An unfortunate marker of the current times is the scale of unethical behavior and corporate corruption committed by business leaders. A powerful antecedent of unethical behavior is organizational culture. This chapter discusses what constitutes and drives an ethical culture. It defines the concept of ethical culture and reviews different approaches that have been used to measure ethical culture in organizations. The Corporate Ethical Virtues model is reviewed in more detail as one example of a reliable and valid way to operationalize ethical organizational cultures. Finally, specific management strategies to maintain and minimize potential threats to an ethical culture are also provided. pe…

Ethically minded consumer behavior, retailers’ commitment to sustainable development, and store equity in hypermarkets

2020

The present paper analyzed the influence of ethically minded consumer behavior on retailer&rsquo

Sesquiterpene lactones from Anthemis wiedemanniana

2005

Asteraceae; Anthemis wiedemanniana; sesquiterpene lactones; germacranolides; eudesmanolide