scholarly journals Molecular Evidence that Lysiphlebia japonica Regulates the Development and Physiological Metabolism of Aphis gossypii

2020 ◽  
Vol 21 (13) ◽  
pp. 4610
Author(s):  
Xueke Gao ◽  
Hui Xue ◽  
Junyu Luo ◽  
Jichao Ji ◽  
Lijuan Zhang ◽  
...  
Keyword(s):  
Aphis Gossypii ◽  
The Body ◽  
Molecular Evidence ◽  
Functional Categories ◽  
Host Parasite Interactions ◽  
Physiological Metabolism ◽  
Major Pest ◽  
Host Parasite ◽  
The Relationship ◽  
Insight Into

Lysiphlebia japonica Ashmead (Hymenoptera, Braconidae) is an endophagous parasitoid and Aphis gossypii Glover (Hemiptera, Aphididae) is a major pest in cotton. The relationship between insect host-parasitoids and their hosts involves complex physiological, biochemical and genetic interactions. This study examines changes in the development and physiological metabolism of A. gossypii regulated by L. japonica. Our results demonstrated that both the body length and width increased compared to non-parasitized aphids. We detected significantly increases in the developmental period as well as severe reproductive castration following parasitization by L. japonica. We then used proteomics to characterize these biological changes, and when combined with transcriptomes, this analysis demonstrated that the differential expression of mRNA (up or downregulation) captured a maximum of 48.7% of the variations of protein expression. We assigned these proteins to functional categories that included immunity, energy metabolism and transport, lipid metabolism, and reproduction. We then verified the contents of glycogen and 6-phosphate glucose, which demonstrated that these important energy sources were significantly altered following parasitization. These results uncover the effects on A. gossypii following parasitization by L. japonica, additional insight into the mechanisms behind insect-insect parasitism, and a better understanding of host-parasite interactions.

A Welcome Conversation: Toward a New Historiography of Intellectual Property

2018 ◽  
Vol 43 (03) ◽  
pp. 1113-1129
Author(s):  
Kali Murray
Keyword(s):  
Intellectual Property ◽  
Legal History ◽  
Social Practices ◽  
The Body ◽  
Property Law ◽  
Legal Concept ◽  
Narrative Structures ◽  
History Of ◽  
The Relationship ◽  
Insight Into

This essay considers what tools should be used to study the legal history of intellectual property. I identify three historiographical strategies: narration, contest, and formation. Narration identifies the diverse “narrative structures” that shape the field of intellectual property history. Contest highlights how the inherent instability of intellectual property as a legal concept prompts recurrent debates over its meaning. Formation recognizes how intellectual property historians can offer insight into broader legal history debates over how to consider the relationship between informal social practices and formalized legal mechanisms. I consider Kara W. Swanson's Banking on the Body: The Market in Blood, Milk and Sperm in Modern America (2014) in light of these historiographical strategies and conclude that Swanson's book guides us to a new conversation in the legal history of intellectual property law.

The paradoxical body: A glimpse of a deeper truth through relatives’ stories

2018 ◽  
Vol 26 (6) ◽  
pp. 1611-1622 ◽  
Author(s):  
Vibeke Bruun Lorentsen ◽  
Dagfinn Nåden ◽  
Berit Sæteren
Keyword(s):  
Research Process ◽  
The Body ◽  
The Other ◽  
Science Data ◽  
Data Services ◽  
The Core ◽  
Clinical Nursing ◽  
Cancer Experience ◽  
The Relationship ◽  
Insight Into

Background: People with progressive cancer experience that their bodies change due to disease and/or treatment. The body is integral to the unity of the human being, a unity that must be perceived as whole if dignity shall be experienced. Relatives are in touch with the suffering bodies of their dear ones, physically, socially, mentally, and existentially, and thus the relatives’ experiences of the bodies of their dear ones might yield insight into the concept of dignity. Aim: The aim of this study is to explore relatives’ experiences of the patients’ bodily changes from a perspective of dignity. Research design and method: A total of 12 relatives from a hospice in Norway were interviewed. Gadamer’s ontological hermeneutics inspired the interpretation. Ethical considerations: The principles of voluntariness, confidentiality, withdrawal, and anonymity were respected during the whole research process. The Norwegian Social Science Data Services approved the study. Results and conclusion: The conversations about the body were conversations about ambivalent or paradoxical matters that shed light on the concept of dignity. The results show that the relatives got in touch with elements that otherwise would have remained tacit and unspoken, and which gave glimpses of a deeper truth, which might reveal the core of dignity. Furthermore, the relatives’ confirmation of the ambivalence might be understood as a strong ethical obligation to treat the other with dignity. The confirmation may also reveal the relatives’ unselfish love of the other, which can be understood as the core of ethics and ethos. Finally, the results reveal the relatives’ limited insight into their dear ones’ bodily changes, and we discuss the challenges of truly seeing the other. Body knowledge and the relationship between body and dignity as phenomena cannot be ignored and needs more attention and articulation in clinical nursing practice and in nursing research.

Divine Punishment or Disease? Medieval and Early Modern Approaches to the 1518 Strasbourg Dancing Plague

2017 ◽  
Vol 35 (2) ◽  
pp. 149-164
Author(s):  
Lynneth J. Miller
Keyword(s):  
Early Modern ◽  
Early Modern Period ◽  
The Body ◽  
Modern Period ◽  
Divine Judgment ◽  
Divine Punishment ◽  
The Relationship ◽  
Insight Into

Using writings from observers of the 1518 Strasbourg dancing plague, this article explores the various understandings of dancing mania, disease, and divine judgment applied to the dancing plague's interpretation and treatment. It argues that the 1518 Strasbourg dancing plague reflects new currents of thought, but remains closely linked to medieval philosophies; it was an event trapped between medieval and modern ideologies and treated according to two very different systems of belief. Understanding the ways in which observers comprehended the dancing plague provides insight into the ways in which, during the early modern period, new perceptions of the relationship between humanity and the divine developed and older conceptions of the body and disease began to change, while at the same time, ideologies surrounding dance and its relationship to sinful behavior remained consistent.

scholarly journals Perception and misperception of surface opacity

2017 ◽  
Vol 114 (52) ◽  
pp. 13840-13845 ◽  
Author(s):  
Phillip J. Marlow ◽  
Juno Kim ◽  
Barton L. Anderson
Keyword(s):  
Visual System ◽  
Fundamental Problem ◽  
Surface Orientation ◽  
The Body ◽  
Local Surface ◽  
Significant Information ◽  
Scene Structure ◽  
The Relationship ◽  
Opaque Surface ◽  
Insight Into

A fundamental problem in extracting scene structure is distinguishing different physical sources of image structure. Light reflected by an opaque surface covaries with local surface orientation, whereas light transported through the body of a translucent material does not. This suggests the possibility that the visual system may use the covariation of local surface orientation and intensity as a cue to the opacity of surfaces. We tested this hypothesis by manipulating the contrast of luminance gradients and the surface geometries to which they belonged and assessed how these manipulations affected the perception of surface opacity/translucency. We show that (i) identical luminance gradients can appear either translucent or opaque depending on the relationship between luminance and perceived 3D surface orientation, (ii) illusory percepts of translucency can be induced by embedding opaque surfaces in diffuse light fields that eliminate the covariation between surface orientation and intensity, and (iii) illusory percepts of opacity can be generated when transparent materials are embedded in a light field that generates images where surface orientation and intensity covary. Our results provide insight into how the visual system distinguishes opaque surfaces and light-permeable materials and why discrepancies arise between the perception and physics of opacity and translucency. These results suggest that the most significant information used to compute the perceived opacity and translucency of surfaces arise at a level of representation where 3D shape is made explicit.

scholarly journals PHYSICAL ACTIVITY AND TRACE ELEMENT METABOLISM

2020 ◽  
Vol 21 (2) ◽  
pp. 3-12
Author(s):  
A.A. Skalny ◽  
Keyword(s):  
Physical Activity ◽  
Trace Elements ◽  
Trace Element ◽  
The Body ◽  
Cobalt Chromium ◽  
Essential Trace Elements ◽  
Trace Element Metabolism ◽  
The Impact ◽  
The Relationship ◽  
Insight Into

Currently, there is no doubt about the prevailing influence of the level of physical activity of an individual on the functional state of the body. However, the available literature data on the impact of physical stress on the body's supply of trace elements and their distribution in tissues are largely contradictory. This review of available literature data provides an insight into the relationship between physical activity and microelement homeostasis. The influence of human physical activity on the exchange of toxic (lead, cadmium, Nickel, etc.) and essential trace elements, such as iron, selenium, copper, cobalt, chromium, and zinc is reviewed. Based on the analyzed works, it is concluded that in order to correct the metabolic and microelement status of a person during physical activity, the most reasonable and necessary is the modulation of homeostasis of zinc and selenium.

scholarly journals Toxic leadership: Effects on job satisfaction, commitment, turnover intention and organisational culture within the South African manufacturing industry

2020 ◽  
Vol 18 ◽  
Author(s):  
Amelda Paltu ◽  
Marissa Brouwers
Keyword(s):  
Job Satisfaction ◽  
South African ◽  
Turnover Intention ◽  
Organisational Culture ◽  
The Body ◽  
Toxic Leadership ◽  
Job Outcomes ◽  
The Impact ◽  
The Relationship ◽  
Insight Into

Orientation: The impact of toxic leadership on employees and organisations has only recently become the focus of certain research studies.Research purpose: The general objective of this research was to investigate the relationship between toxic leadership, job satisfaction, turnover intention and commitment. The aim further was to test whether organisation culture mediates the relationship between toxic leadership and certain job outcomes such as job satisfaction, turnover intention and commitment.Motivation for the study: Currently, no knowledge is available on the relationships between toxic leadership and job outcomes within the context of South African manufacturing organisations. Therefore, this study provides South African organisations and researchers with an insight into such a relationship and the mentioned mediation of organisational culture in the process.Research approach/design and method: A cross-sectional research design with a sample size of N = 600 manufacturing employees was used. Product–moment correlations, multiple regression and structural equation modelling were used.Main findings: The test results returned both direct and indirect effects for all the relationships, which indicated only partial mediation in all the tested relationships.Practical/managerial implications: The results provided organisations’ insight into the possible consequences of toxic leadership on employees and the organisations’ culture.Contribution/value-add: The improved understanding of toxic leadership and the relationship with certain job outcomes contributes to the body of knowledge on both the theory of toxic leadership and on employees’ experience of such leadership styles in the work environment.

scholarly journals Immune defence, parasite evasion strategies and their relevance for ‘macroscopic phenomena’ such as virulence

2008 ◽  
Vol 364 (1513) ◽  
pp. 85-98 ◽  
Author(s):  
Paul Schmid-Hempel
Keyword(s):  
Immune Evasion ◽  
Life History Theory ◽  
Evolutionary Ecology ◽  
Parasite Clearance ◽  
Multiple Infections ◽  
Parasite Fitness ◽  
Host Parasite Interactions ◽  
Evolution Of Virulence ◽  
Host Parasite ◽  
Insight Into

The discussion of host–parasite interactions, and of parasite virulence more specifically, has so far, with a few exceptions, not focused much attention on the accumulating evidence that immune evasion by parasites is not only almost universal but also often linked to pathogenesis, i.e. the appearance of virulence. Now, the immune evasion hypothesis offers a deeper insight into the evolution of virulence than previous hypotheses. Sensitivity analysis for parasite fitness and life-history theory shows promise to generate a more general evolutionary theory of virulence by including a major element, immune evasion to prevent parasite clearance from the host. Also, the study of dose–response relationships and multiple infections should be particularly illuminating to understand the evolution of virulence. Taking into account immune evasion brings immunological processes to the core of understanding the evolution of parasite virulence and for a range of related issues such as dose, host specificity or immunopathology. The aim of this review is to highlight the mechanism underlying immune evasion and to discuss possible consequences for the evolutionary ecology analysis of host–parasite interactions.

EFFECTS OF CROWDING ON SUPLHURETYLENCHUS SPP. (NEMATODA: ALLANTONEMATIDAE) IN THE HAEMOCOEL OF THEIR BARK BEETLE HOSTS (COLEOPTERA: SCOLYTIDAE)

1989 ◽  
Vol 121 (9) ◽  
pp. 821-822
Author(s):  
Marek Tomalak ◽  
Harold E. Welch ◽  
Terry D. Galloway
Keyword(s):  
Bark Beetle ◽  
Bark Beetles ◽  
Biological Control Agents ◽  
Infection Rates ◽  
Intensity Of Infection ◽  
Nematode Parasites ◽  
Host Parasite Interactions ◽  
Host Parasite ◽  
The Relationship ◽  
Growth And Reproduction

Nematode parasites of bark beetles are taxonomically diverse, and may, in some cases, cause serious pathological and behavioural changes in their hosts (Kaya 1984). Their potential as biological control agents has long been recognized, but to date there is a shortage of elementary information on host-parasite interactions. Though the effects of superparasitism and subsequent crowding on the parasite have been studied for some mermithids (Petersen 1972) and steinernematids (Sandner and Stanuszek 1971), no such observations have been reported for bark beetle parasites. During a survey of nematode parasites of bark beetles in Manitoba, we encountered two examples where nematodes were detrimentally affected at the higher infection rates observed. It was our objective, therefore, to examine the relationship between intensity of infection, and impact on growth and reproduction of the parasites.

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