Search results for "systematic"
showing 10 items of 7608 documents
Gene expression patterns associated with caste and reproductive status in ants: worker-specific genes are more derived than queen-specific ones.
2013
Variation in gene expression leads to phenotypic diversity and plays a central role in caste differentiation of eusocial insect species. In social Hymenoptera, females with the same genetic background can develop into queens or workers, which are characterized by divergent morphologies, behaviours and lifespan. Moreover, many social insects exhibit behaviourally distinct worker castes, such as brood-tenders and foragers. Researchers have just started to explore which genes are differentially expressed to achieve this remarkable phenotypic plasticity. Although the queen is normally the only reproductive individual in the nest, following her removal, young brood-tending workers often develop …
Ideology, Nationalism and Law: Legal Tools for an Ideological Machinery in Latvia
2016
For around 25 years Latvia has moved further and further away from Soviet Marxism-Leninist state ideology and has successfully re-integrated with European legal culture. It is obvious that the term ‘ideology’, due to its historical Soviet context, has a mostly negative colouring even nowadays. Integration within the European Union and the implementation of social and political programs and concepts have led to questions raised about leading contemporary ideology (ies) and its (their) role in the development of Latvia’s legal system. The issue of ideologies becomes more complicated and unclear when regarding specific legal reforms or Parliament`s drafts of laws. The article will explore the …
Plant-herbivorous beetle networks : molecular characterization of trophic ecology within a threatened steppic environment
2015
DNA barcoding facilitates many evolutionary and ecological studies, including the examination of the dietary diversity of herbivores. In this study, we present a survey of ecological associations between herbivorous beetles and host plants from seriously threatened European steppic grasslands. We determined host plants for the majority (65%) of steppic leaf beetles (55 species) and weevils (59) known from central Europe using two barcodes (trnL and rbcL) and two sequencing strategies (Sanger for mono/oligophagous species and Illumina for polyphagous taxa). To better understand the ecological associations between steppic beetles and their host plants, we tested the hypothesis that leaf beetl…
Binding analysis of Bacillus thuringiensis Cry1 proteins in the sugarcane borer, Diatraea saccharalis (Lepidoptera: Crambidae).
2015
Sugarcane borer (Diatraea saccharalis, F.) is an important corn pest in South America and United States. The aim of the present study was to analyze the susceptibility and binding interactions of three Cry1A proteins and Cry1Fa in a Brazilian D. saccharalis population. The results showed that Cry1Ab was the most active, followed by Cry1Ac, Cry1Fa and Cry1Aa. All Cry1-biotinylated proteins tested bound specifically to the D. saccharalis brush border membrane vesicles (BBMV). Heterologous competition assays showed shared binding sites for all Cry1A proteins and another one shared by Cry1Fa and Cry1Ab. Thus, pyramiding Cry1Aa/Cry1Ac and Cry1F proteins would be a recommended strategy for managi…
Evaluation tools for spiritual support in end of life care: increasing evidence for their clinical application.
2015
Purpose of review To summarize current evidence on evaluation tools for spiritual care, paying special attention to recent validations and new instruments, systematic reviews, recent consensus on spiritual care and its measurement, plus other emergent topics. Recent findings The systematic review resulted in 45 identified studies, 14 of which were considered: five works addressed the need for development and validation of spiritual tools; three studies reviewed tools for spirituality assessment, interventions, or related concepts; three more covered the efforts to define guidelines and priorities for spiritual care and its measurement. Other topics such as pediatric spiritual care, the use …
Challenges in the use of Near Infrared Spectroscopy for improving wood quality: A review
2018
Aims of study: Forestry-related companies require quality monitoring methods capable to pass a large number of samples. This review paper is dealing with the utilization of near infrared (NIR) technique for wood analysis.Area of study: We have a global point of view for NIR applications and characterization of different kind of wood species is considered.Material and methods: NIR spectroscopy is a fast, non-destructive technique, applicable to any biological material, demanding little or no sample preparation. NIR spectroscopy and multivariate analysis serve well in laboratories where the conditions are controlled. The main challenges to NIR spectroscopy technique in field conditions are mo…
Découverte d'Arthropodes et de bivalves inédits dans le Permien continental (Lodévois, France)
1997
Resume Des Triopsides, Conchostraces, Insectes, Bivalves, pistes et terriers d'Arthropodes sont decouverts dans le Groupe saxonien considere longtemps comme quasi azoique. Ces fossiles sont pour la plupart inedits, au niveau de l'espece, de la famille et de l'ordre. Chez les Insectes, de nouveaux taxons comblent des lacunes temporelles considerables, allant du Jurassique au Permien. Les informations recueillies vont permettre de rediscuter certaines phylogenies et de reapprecier l'impact de la crise fini-permienne sur cette classe. La repartition des Insectes et des Conchostraces suggere de donner un âge Koungourien a Tatarien (Leonardien a Capitanien) au ≪ Saxonien ≫.
RESEARCH PAPER: Multiple Sexual Ornamentation Signals Male Quality and Predicts Female Preference in Minnows
2010
Sexual ornamentation often consists of multiple components. Different sexual signals may indicate different aspects of mate quality or reflect quality in different time scales. On the other hand, same signals can have a dual function and are used both in male–male competition and courtship. Many fish species are capable of rapidly altering their colouration (ephemeral colour changes), but this capability is usually ignored in sexual selection studies. Here, we used experimentally manipulated social environments to study the ephemeral colour changes in multicomponent sexual signals of male minnows (Phoxinus phoxinus) during male–male competition and female choice. We found that the dominant …
Reliability Generalization Study of the Person-Centered Care Assessment Tool
2021
The so-called Person-Centered Care (PCC) model identifies three fundamental principles: changing the focus of attention from the disease to the person, individualizing care, and promoting empowerment. The Person-Centered Care Assessment Tool (P-CAT) has gained wide acceptance as a measure of PCC in recent years due to its brevity and simplicity, as well as its ease of application and interpretation. The objective of this study is to carry out a reliability generalization meta-analysis to estimate the internal consistency of the P-CAT and analyze possible factors that may affect it, such as the year of publication, the care context, the application method, and certain sociodemographic proper…
Parental Socialization and Its Impact across the Lifespan
2020
Classical studies have found that parental warmth combined with parental strictness is the best parental strategy to promote children&rsquo