Search results for "Meles"

Identification and characterization of circadian clock genes in the pea aphid Acyrthosiphon pisum

2010

The molecular basis of circadian clocks is highly evolutionarily conserved and has been best characterized in Drosophila and mouse. Analysis of the Acyrthosiphon pisum genome revealed the presence of orthologs of the following genes constituting the core of the circadian clock in Drosophila: period (per), timeless (tim), Clock, cycle, vrille, and Pdp1. However, the presence in A. pisum of orthologs of a mammal-type in addition to a Drosophila-type cryptochrome places the putative aphid clockwork closer to the ancestral insect system than to the Drosophila one. Most notably, five of these putative aphid core clock genes are highly divergent and exhibit accelerated rates of change (especially…

Estimation de la densité du Blaireau (Meles meles) en Côte d’Or au regard du risque de transmission de la tuberculose bovine

2012

Rapport de Stage de Master 2 EA MERS CT3; Master

2018

Abstract To function properly, organisms must adjust their physiology, behavior and metabolism in response to a suite of varying environmental conditions. One of the central regulators of these changes is organisms’ internal circadian clock, and recent evidence has suggested that the clock genes are also important in the regulation of seasonal adjustments. In particular, thermosensitive splicing of the core clock gene timeless in a cosmopolitan fly, Drosophila melanogaster, has implicated this gene to be involved in thermal adaptation. To further investigate this link we examined the splicing of timeless in a northern malt fly species, Drosophila montana, which can withstand much colder cli…

Reproductive Biology Including Evidence for Superfetation in the European Badger Meles meles (Carnivora: Mustelidae)

2015

The reproductive biology of the European badger (Meles meles) is of wide interest because it is one of the few mammal species that show delayed implantation and one of only five which are suggested to show superfetation as a reproductive strategy. This study aimed to describe the reproductive biology of female Irish badgers with a view to increasing our understanding of the process of delayed implantation and superfetation. We carried out a detailed histological examination of the reproductive tract of 264 female badgers taken from sites across 20 of the 26 counties in the Republic of Ireland. The key results show evidence of multiple blastocysts at different stages of development present s…

Working with People Experiencing Homelessness in Europe

2022

In Europe, the widespread transition from the Traditional Staircase (TS) model to the Housing First (HF) model is transforming the way social service providers work with people experiencing homelessness. This study examined social service providers’ perspectives in both models regarding factors that facilitate or hinder their work. Data were collected through 17 photovoice projects involving 81 social service providers from eight European countries. The results show factors affecting social service providers’ work at three levels: systemic, organizational, and individual. Professionals in TS and HF identified similar topics; however, TS providers discussed more obstacles to work. Implicatio…

Poïetic adriftness in Ailbhe Ni Bhriain's video art: dissolved points

2016

International audience

Health behaviours and mental and physical health status in older adults with a history of homelessness:a cross-sectional population-based study in En…

2019

Objectives: This study compared (1) levels of engagement in lifestyle risk behaviours and (2) mental and physical health status in individuals who have previously been homeless to those of individuals who have not. Design: Cross-sectional. Participants: Data were from participants (n=6931) of the English Longitudinal Study of Ageing. Measures: Participants reported whether they had ever been homeless. We used regression models to analyse associations between homelessness and (1) cigarette smoking, daily alcohol consumption and physical inactivity, adjusting for sociodemographic covariates (age, sex, ethnicity, highest level of education, marital status and household non-pension wealth) and …

Mapping and quantification of cryptochrome expression in the brain of the pea aphid Acyrthosiphon pisum.

2021

Aphids are paradigmatic photoperiodic animals often used to study the role of the circadian clock in the seasonal response. Previously, we described some elements of the circadian clock core (genes period and timeless) and output (melatonin, AANATs and PTTH) that could have a role in the regulation of the aphid seasonal response. More recently we identified two opsins (C-ops and SWO4) as candidate input photoperiodic receptors. In the present report, we focus on the study of cryptochromes (cry) as photoreceptors of the circadian clock and discuss their involvement in the seasonal response. We analyze the expression of cry1 and cry2 genes in a circadian and seasonal context, and map their ex…

Spatio-temporal pattern of cells expressing the clock genes period and timeless and the lineages of period expressing neurons in the embryonic CNS of…

2010

The initial steps towards the generation of cell diversity in the central nervous system of the fruitfly Drosophila melanogaster take place during early phases of embryonic development when a stereotypic population of neural progenitor cells (neuroblasts and midline precursors) is formed in a precise spatial and temporal pattern, and subsequently expresses a particular sequence of genes. The clarification of the positional, temporal and molecular features of the individual progenitor cells in the nerve cord and brain as well as of their specific types of neuronal and/or glial progeny cells forms an essential basis to understand the mechanisms controlling their development. The present study…

Psychometric properties of the measure of achieved capabilities in homeless services

2023

Background Purposeful participation in personally meaningful life tasks, enjoyment of positive reciprocal relationships, and opportunities to realize one’s potential are growth-related aspects of a meaningful life that should be  considered important dimensions of recovery from homelessness. The extent to which homeless services support  individuals to achieve the capabilities they need to become who they want to be and do what they want to do is,  in turn, an important indicator of their efectiveness. In this study, we developed a measure of achieved capabilities  (MACHS) for use in homeless services settings, and assessed its construct and concurrent validity. Methods We analysed data col…