Grey and harbour seals in France : distribution at sea, connectivity and trends in abundance at haulout sites

Grey (Halichoerus grypus) and harbour seals (Phoca vitulina) are sympatric seal species, but they display distinct strategies of habitat use and connectivity between haulout sites. The distribution patterns and variations in relative abundance of both species were investigated along the French coast of the English Channel, at the southern limit of their range where seal numbers are increasing. Regular censuses conducted at all main haulout sites in mainland France showed significant seasonal variations at most sites, with more harbour seals counted during summer (breeding and moulting seasons), and more grey seals during summer only in the eastern English Channel. Trends in maximum haulout numbers at haulout sites showed a significant increase over the last five years, ranging from 9.7 to 30.9% per year for harbour seals, and from 5.8% (in the western English Channel) to 49.2% (in the eastern English Channel) per year for grey seals. These rates of increase in grey seal numbers are not linked to local pup production and most probably result from seal movements from the southwest British Isles and the North Sea, respectively. Aerial surveys conducted across the English Channel showed that most seal observations at sea were concentrated in the north-eastern English Channel. Telemetry showed that the 28 harbour seals tracked remained highly coastal, within a radius of 100 km from their haulout sites, and did not move to other known colonies. Grey seals moved much greater distances, reaching up to 1200 km from their capture site. More than half of the 45 grey seals tracked crossed the English Channel, especially during the breeding season, moving to known colonies in the southwest British Isles and the North Sea. Combining individual tracks and long-term surveys of the seal populations allowed a better understanding of the dynamics of these populations and their connectivity at a larger regional scale. The findings provide direct information for the management of grey and harbour seals within the frame of the Marine Strategy Framework Directive, and highlight focus areas where potential interactions between the two species should be monitored.PostprintPeer reviewe

TER SOC In-sense

The Incels are a self-proclaimed group of men who share extreme ideas. Considering themselves at the bottom of the social hierarchy, continually rejected by women, sexually or romantically, they share their extreme ideologies on online forums. In recent years, more and more murders have been committed by individuals claiming to belong to this group. In this study, we attempt to understand, through the theory of the quest for meaning, the motivations that lead individuals to adopt radical ideologies and to use violence as a means of vindication

mathilde turpin's Quick Files

The Quick Files feature was discontinued and it’s files were migrated into this Project on March 11, 2022. The file URL’s will still resolve properly, and the Quick Files logs are available in the Project’s Recent Activity

mathilde turpin's Quick Files

The Quick Files feature was discontinued and it’s files were migrated into this Project on March 11, 2022. The file URL’s will still resolve properly, and the Quick Files logs are available in the Project’s Recent Activity

Mode de rupture en flexion circulaire des tenons en fibres de carbone

RENNES1-BU Santé (352382103) / SudocPARIS-BIUM (751062103) / SudocSudocFranceF

Evaluation de la mentalisation chez le parent et son enfant 18 mois et 11 ans après une naissance prématurée

Suite à une naissance prématurée, les parents vivent un stress parfois intense et l’enfant expérimente un début de vie particulier où les contacts corporels proches sont quelque peu entravés. Ces éléments peuvent marquer la mise en place de la régulation émotionnelle chez le petit enfant. Les capacités de mentalisation s’ancrent au moins en partie sur ces capacités de régulation émotionnelle qui se construisent dans la relation à l’autre et l’on peut faire l’hypothèse que la prématurité peut marquer les capacités de mentalisation du parent comme de l’enfant et ceci même chez des enfants nés très prématurément exempts de séquelles. C’est ce qu’a voulu mettre en évidence l’étude présentée ici. A partir des entretiens d’attachement réalisés 18 mois puis 11 ans après la naissance, cette étude montre comment la naissance d’un grand prématuré (≤ à 32 semaines de gestation) peut affecter les capacités de mentalisation d’une dyade mère-enfant confrontée à cet événement périnatal.After a premature birth, the parental stress could be very intense and the child could experience a particular start of life without usual skin and body contact. These elements could strongly affect the initial adjustment allowing the future emotional regulation capacities of the child. The mentalization competencies are based at least in part on this emotional regulation which develops through the relationship with others. Thus, we can make the hypothesis that the premature birth could affect the mentalization competencies even with preterm born children without after-effects due to the prematurity. This is the purpose of the present study. On the basis of attachment interviews with parents and children 18 months and 11 years after the birth, this study shows how prematurity impacts the mentalization competencies of the mother-child dyad confronted to this adverse perinatal event

Potential Supramolecular Cyclodextrin Dimers Using Nucleobase Pairs

International audienceno abstrac

Consequences of Prematurity on Cortisol Regulation and Adjustment Difficulties: A 9-Year Longitudinal Study

A preterm birth represents a stressful event having potentially negative long-term consequences. Thirty-three children born preterm (&lt;33 weeks gestational age) and eleven full-term children participated in a nine-year longitudinal study. Perinatal Risk Inventory (PERI) was used at birth to assess the perinatal stress. Salivary cortisol, collected four times a day over two consecutive days, was measured with radioimmunoassay technique at six months and nine years to assess the hypothalamic-pituitary-adrenal (HPA) axis. Mothers reported post-traumatic symptoms on a self-report questionnaire 12 months after their child’s birth and children’s adjustment problems at 9 years of child age on the Child Behavior Checklist. Results showed a significant difference in cortisol regulation at nine years between preterm and full-term children but no differences in adjustment problems. Whereas biological factors (i.e., PERI, cortisol regulation at six months) explained cortisol at nine years, maternal post-traumatic symptoms were predictive of adjustment problems in their child. In conclusion, very preterm birth has some long-term consequences on the HPA-axis regulation at nine years. Although cortisol regulation is mostly influenced by biological factors, the presence of maternal post-traumatic symptoms predicts the manifestation of adjustment problems in both groups. This shows the importance of maternal psychological well-being for child development. Further research is needed to understand the exact consequences of premature birth on cortisol regulation and the implication for the child’s development and health.</jats:p