Search results for "developmental stage"
showing 10 items of 33 documents
Age, pathogen exposure, but not maternal care shape offspring immunity in an insect with facultative family life.
2016
Background To optimize their resistance against pathogen infection, individuals are expected to find the right balance between investing into the immune system and other life history traits. In vertebrates, several factors were shown to critically affect the direction of this balance, such as the developmental stage of an individual, its current risk of infection and/or its access to external help such as parental care. However, the independent and/or interactive effects of these factors on immunity remain poorly studied in insects. Results Here, we manipulated maternal presence and pathogen exposure in families of the European earwig Forficula auricularia to measure whether and how the sur…
Peripheral developing odontoma in newborn. Report of two cases and literature review.
2008
Extra-osseous odontogenic tumors are rarely observed. However, it is widely accepted that the remains of odontogenic epithelium entrapped in the oral soft tissues may be a possible source for peripheral odontogenic tumors differentiation. Peripheral developing odontoma is considered exceptionally rare, since few similar cases are described in the English-related literature under diverse nomenclature, such as irregular eruption, ectopic tooth, ectopic soft-tissue mesiodens, ectopic odontoma and extra-osseous tooth germ. Previously reported cases invariably affected children and surgical exploration revealed tooth germs exclusively embedded in the soft tissue without bone involvement. Microsc…
Parent and peer attachment as predictors of facebook addiction symptoms in different developmental stages (early adolescents and adolescents)
2019
Abstract Facebook Addiction (FA) is a problem that concerns minors all over the world. The attachment bond with peers and parents has been proven to be a risk factor for the onset of FA. However, the family and peer group can have a different importance depending on the developmental period of the minor. This study examined the influence of peer and parental attachment on the symptoms of FA in early adolescents and adolescents to verify whether attachment to peers and parents predicts FA symptoms in both categories respectively. The sample was composed of 598 participants (142 early adolescents) between the ages of 11 and 17 years (M age = 14.82, SD = 1.52) recruited in the school setting. …
Psychologiczna koncepcja poszukiwania sacrum w religijności i duchowości
2012
Nowadays, there is a growing interest in the area of psychology of religion as regards religiousness and spirituality. In the past both terms overlapped substantially which was clearly visible in great spiritual traditions of many religions. Recently, however, spirituality has emerged as a distinct construct. Although, religiousness and spirituality have common characteristics they are generally regarded as related but not identical constructs. Both religiousness and spirituality are embedded within the context of “a search for the sacred” which refers to sacrum. The main difference is that religiousness represents the personal or communal search for the sacred that happens within a traditi…
Influence of Culture Conditions on In Vitro Asymbiotic Germination of Anacamptis longicornu and Ophrys panormitana (Orchidaceae)
2021
This study is the first approach to in vitro asymbiotic germination of two species of Sicilian threatened terrestrial orchids, Anacamptis longicornu and Ophrys panormitana. Seeds were collected in the wild and cultured in two different media—Orchimax medium (OM) and Murashige and Skoog (MS)—and exposed to different photoperiods and temperatures to evaluate the best conditions for the specific stages of development. The germination of A. longicornu was very high on OM (95.5%) and lower on MS medium (21.4%), whereas O. panormitana germinated only on OM medium, with significantly lower percentages (12.0%), compared with A. longicornu. This difference is caused by variation in quality and quant…
Exploring the Link between ICT and Development in the Context of Developing Countries : A Literature Review
2014
Published version of an article in the journal: Electronic Journal of Information Systems in Developing Countries. Also available from the publisher at: http://www.ejisdc.org/ojs2/index.php/ejisdc/article/view/1332. Open Access The article contributes to the ongoing discussion on relating information and communication technology (ICT) to development (D). The quest to relate ICT to D is a topic of open deliberation and critical scrutiny in ICT4D research communities. To enhance the understanding in this regard, we conducted a literature review. The review examines 80 articles to identify various development theories and the role of technologies in the development process. While scanning the …
Age, pathogen exposure, but not maternal care shape offspring immunity in an insect with facultative family life
2017
International audience; Background: To optimize their resistance against pathogen infection, individuals are expected to find the right balance between investing into the immune system and other life history traits. In vertebrates, several factors were shown to critically affect the direction of this balance, such as the developmental stage of an individual, its current risk of infection and/or its access to external help such as parental care. However, the independent and/or interactive effects of these factors on immunity remain poorly studied in insects.Results: Here, we manipulated maternal presence and pathogen exposure in families of the European earwig Forficula auricularia to measur…
A Specific Radioimmunoassay for the Determination of Low Quantities of Indole-3-acetic Acid in Spruce Needles of Healthy and Damaged Trees
1988
Summary The aim of the present investigation was to develop a radioimmunoassay for the quantification of indole-3-acetic acid in needles of Picea abies in damaged and phenotypically healthy trees. Phenols, lipophilic substances or compounds with cross-reactivity had to be separated from the extracts in several purification steps. Measurements were carried out between May and October 1986 on trees from two spruce plantations. Marked differences were found in IAA content in needles of healthy and damaged trees. In most cases the needles of the damaged trees contain lower endogenous IAA levels. The auxin levels also depended on the age of the tree, the year of needle formation, and the vegetat…
Diplostomiasis ( Diplostomum spathaceum and related species).
2020
This book chapter describes various aspects of diplostomiasis caused by Diplostomum spathaceum: diagnosis, epidemiology, life cycle, transmission, developmental stages, population dynamics, effects of climate change on parasite distribution, and disease control and prevention. peerReviewed
Meaning in Life Buffers the Association between Perceived Burdensomeness, Thwarted Belongingness, and Frequency of Non-Suicidal Self-Injuries in Span…
2021
Background: Adolescence is a developmental stage when there is a high risk of engaging in non-suicidal self-injury (NSSI). There is recent interest in the study of thwarted belongingness and perceived burdensome as variables associated with the frequency of NSSI in adolescents. Meaning in life (MIL) might be negatively associated with thwarted belongingness and perceived burdensomeness. To date, no studies have analyzed the buffering role of MIL in the association between thwarted belongingness and perceived burdensomeness and the frequency of lifetime NSSI in Spanish adolescents. Aims: (a) To test whether thwarted belongingness and perceived burdensomeness are associated with frequency of …