Genetic Variation in Male Aggression Is Influenced by Genotype of Prior Social Partners in Drosophila melanogaster.

AbstractSocial behaviors can be influenced by the genotypes of interacting individuals through indirect genetic effects (IGEs) and can also display developmental plasticity. We investigated how developmental IGEs, which describe the effects of a prior social partner's genotype on later behavior, can influence aggression in male Drosophila melanogaster. We predicted that developmental IGEs cannot be estimated by simply extending the effects of contextual IGEs over time and instead have their own unique effects on behavior. On day 1 of the experiment, we measured aggressive behavior in 15 genotypic pairings (n=600 males). On day 2, each of the males was paired with a new opponent, and aggressive behavior was again measured. We found contextual IGEs on day 1 of the experiment and developmental IGEs on day 2 of the experiment: the influence of the day 1 partner's genotype on the focal individual's day 2 behavior depended on the genotypic identity of both the day 1 partner and the focal male. Importantly, the developmental IGEs in our system produced fundamentally different dynamics than the contextual IGEs, as the presence of IGEs was altered over time. These findings represent some of the first empirical evidence demonstrating developmental IGEs, a first step toward incorporating developmental IGEs into our understanding of behavioral evolution.

Unpacking and validating the "integration" core concept of physiology by an Australian team.

Consensus was reached on seven core concepts of physiology using the Delphi method, including "integration," outlined by the descriptor "cells, tissues, organs, and organ systems interact to create and sustain life." This core concept was unpacked by a team of 3 Australian physiology educators into hierarchical levels, identifying 5 themes and 10 subthemes, up to 1 level deep. The unpacked core concept was then circulated among 23 experienced physiology educators for comments and to rate both level of importance and level of difficulty for each theme and subtheme. Data were analyzed using a one-way ANOVA to compare between and within themes. The main theme (theme 1: the body is organized within a hierarchy of structures, from atoms to molecules, cells, tissues, organs, and organ systems) was almost universally rated as Essential. Interestingly, the main theme was also rated between Slightly Difficult to Not Difficult, which was significantly different from all other subthemes. There were two separate subsets of themes in relation to importance, with three themes rating between Essential and Important and the two other themes rating as Important. Two subsets in the difficulty of the main themes were also identified. While many core concepts can be taught concurrently, Integration requires the application of prior knowledge, with the expectation that learners should be able to apply concepts from "cell-cell communication," "homeostasis," and "structure and function," before understanding the overall Integration core concept. As such, themes from the Integration core concept should be taught within the endmost semesters of a Physiology program.NEW & NOTEWORTHY This article proposes the inclusion of a core concept regarding "integration" into physiology-based curricula, with the descriptor "cells, tissues, organs, and organ systems interact to create and sustain life." This concept expands prior knowledge and applies physiological understanding to real-world scenarios and introduces contexts such as medications, diseases, and aging to the student learning experience. To comprehend the topics within the Integration core concept, students will need to apply learned material from earlier semesters.

Establishing consensus for the core concepts of physiology in the Australian higher education context using the Delphi method.

A set of core concepts ("big ideas") integral to the discipline of physiology are important for students to understand and demonstrate their capacity to apply. We found poor alignment of learning outcomes in programs with physiology majors (or equivalent) from 17 Australian universities and the 15 core concepts developed by a team in the United States. The objective of this project was to reach Australia-wide consensus on a set of core concepts for physiology, which can be embedded in curricula across Australian universities. A four-phase Delphi method was employed, starting with the assembling of a Task Force of physiology educators with extensive teaching and curriculum development expertise from 25 Australian universities. After two online meetings and a survey, the Task Force reached agreement on seven core concepts of physiology and their descriptors, which were then sent out to the physiology educator community across Australia for agreement. The seven core concepts and their associated descriptions were endorsed through this process (n = 138). In addition, embedding the core concepts across the curriculum was supported by both Task Force members (85.7%) and educators (82.1%). The seven adopted core concepts of human physiology were Cell Membrane, Cell-Cell Communication, Movement of Substances, Structure and Function, Homeostasis, Integration, and Physiological Adaptation. The core concepts were subsequently unpacked into themes and subthemes. If adopted, these core concepts will result in consistency across curricula in undergraduate physiology programs and allow for future benchmarking.NEW & NOTEWORTHY This is the first time Australia-wide agreement has been reached on the core concepts of physiology with the Delphi method. Embedding of the core concepts will result in consistency in physiology curricula, improvements to teaching and learning, and benchmarking across Australian universities.

Supporting engagement and retention of online and blended-learning students: A qualitative study from an Australian University.

Enrolment numbers in online higher education courses have continued to increase over the last decade. The challenges brought about by the COVID-19 pandemic have further accelerated the growth in online and blended course offerings. The development of institutional support services, however, does not reflect this growth. Many students are not equipped with the skills or given adequate support to engage and succeed in their courses, leading to student disengagement and attrition. This study investigated the perceptions of students in online and blended subjects, regarding both the academic and institutional support they were provided. The research team collected interview data from 41 online and blended-learning students and then analysed these data using an iterative thematic analysis approach. This article introduces the key findings with two models: one presenting support strategies at multiple levels within this university; the other presenting three key elements of subject-level teacher support, which were identified by the interviewees as the most significant, effective, and relevant support mechanism in this context. The findings will inform higher education institutions who aim to engage and support online and blended students better, through an improved understanding of how support is perceived by this student cohort. This study was conducted at one Australian university; however, the findings are relevant to higher education institutions in other countries that strive to bring about positive experiences and enhance retention rates for online and blended students.

eHealth Literacy of Australian Undergraduate Health Profession Students: A Descriptive Study.

Rapid growth in digital health technologies has increased demand for eHealth literacy of all stakeholders within health and social care environments. The digital future of health care services requires the next generation of health professionals to be well-prepared to confidently provide high-quality and safe health care. The aim of this study was to explore the eHealth literacy of undergraduate health profession students to inform undergraduate curriculum development to promote work-readiness. A cross-sectional survey was undertaken at an Australian university using the seven-domain eHealth Literacy Questionnaire (eHLQ), with 610 students participating. A one-way Multivariate Analysis of Variance (MANOVA) with follow-up univariate analysis (ANOVA) was used to determine if there were differences in eHLQ scores across 11 sociodemographic variables. Students generally had good knowledge of health (Scale 2); however, they had concerns over the security of online health data (Scale 4). There were also significant differences in age and ownership of digital devices. Students who were younger reported higher scores across all seven eHLQ scales than older students. This research provided an understanding of eHealth literacy of health profession students and revealed sub-groups that have lower eHealth literacy, suggesting that digital health skills should be integrated into university curriculums, especially related to practice-based digital applications with special focus to address privacy and security concerns. Preparation of health profession students so they can efficiently address their own needs, and the needs of others, is recommended to minimise the digital divide within health and social care environments.

Nurses' harm prevention practices during admission of an older person to the hospital: A multi-method qualitative study.

BACKGROUND: Nurses' harm prevention practices during the admission of older persons to hospital have important consequences for patient safety, preventable patient harm and length of hospital stay. Novel solutions are needed to assist nurses to balance complexity, high workload burden and patient safety during admission processes. AIM: Explore the nurses' experiences of harm prevention practices during the admission of an older person to the hospital. DESIGN: A multi-method qualitative study informed by frameworks of behaviour change and human-centred co-design. METHODS: The purposive sample included 44 nurses, 5 clinicians from other disciplines and 3 consumers recruited from five general medicine wards across three hospitals of a large public health service in metropolitan Melbourne, Australia. Data were collected over 12 h of naturalistic observations of nurses during eight patient admissions, and during four participatory human-centred co-design workshops between August 2019 and January 2020. Observation, field notes and workshop artefact data were integrated for qualitative content and thematic analysis. RESULTS: Analysis revealed a 5-step journey map, with a temporal logic, that captured nurses' experiences, as well as the enablers and barriers to harm prevention practices when admitting an older person to the hospital. The consensus was reached on three priority features to assist nurses to implement harm prevention practices when they admit an older person to the hospital: (1) prioritize important care; (2) tailor care to the individual and (3) see the big picture for the patient. CONCLUSION: The novel research approach identified five steps in nurses' activities and harm prevention practices during admission of an older person to the hospital, and key features for a solution to assist nurses to keep patients safe. The findings provide the foundation for further research to develop interventions to assist nurses to manage high workloads during this complex activity.

Nursing guidelines for comprehensive harm prevention strategies for adult patients in acute hospitals: An integrative review and synthesis.

BACKGROUND: Harm prevention research has seldom considered the complex demands on nurses negotiating multiple interrelated factors that contribute to preventable harms common in hospitalized patients. Best practice guidelines are available for individual risk factors, but few consider multiple factors that contribute to risk. As a consequence, duplication, contradiction, gaps, and volume of information limit harm prevention guideline use by nurses in daily practice. OBJECTIVES: To systematically synthesise best-evidence recommendations from clinical practice guidelines to support nurses to deliver comprehensive harm prevention during acute hospitalization. DESIGN: An integrative review process was used to systematically identify, examine, evaluate and synthesise clinical nursing guidelines to prevent harm to hospitalized patients. METHODS: The search strategy developed with an expert librarian used a combination of targeted searching for guidelines published on websites, and forward and backward citation searching. Guidelines included were those most recently published, relevant to the international nursing context, and addressing one or more of eight factors contributing to preventable harms. The AGREE-REX (Appraisal of Guidelines Research and Evaluation-Recommendations Excellence) tool was used for critical appraisal of guidelines regarding appropriateness to target users (i.e., nurses), trustworthiness, and implementable in acute hospitals. EndNote and NVIVO 12 were used to manage the high volume of extracted data and facilitate analysis. Analyses involved using the framework method to code data for relevance to an eight-factor harm prevention framework; steps for inductive thematic analyses were used for synthesis. Iterations of the thematic model were refined by sharing with hospital patient safety experts, who endorsed the final model. RESULTS: 154 guidelines met inclusion criteria, providing 7,429 recommendations. Synthesis involved mapping of recommendations across the eight-factor framework that informed a hierarchy of risk for harm prevention activity. Six themes represented nursing care strategies across the eight-factors that could be integrated into local practice contexts. The themes are framed into a model for nurse comprehensive harm prevention. CONCLUSIONS: The complexity and volume of guidance for comprehensive harm prevention necessitates contemporaneous, integrated, and accessible guidance to support nurses' decision-making in their daily care provision. This research provides an integrated model to assist nurses to identify patients most vulnerable to multiple preventable harms during hospitalization and guide a comprehensive harm prevention strategy to keep them safe in hospital. TWEETABLE ABSTRACT: Review of nursing guidelines generates integrated model to help identify patients most vulnerable to multiple preventable harms during hospitalization.

Methods used to examine technology in relation to the quality of nursing work in acute care: A systematic integrative review.

AIMS AND OBJECTIVES: To systematically locate, assess and synthesise research to describe methods used to examine technology in relation to the quality of nursing work in acute care. Specific objectives were to (a) describe the types of nursing work examined; (b) describe methods used to examine technology in nursing work; (c) identify outcomes used to evaluate technology in relation to the quality of nursing work; and (d) make recommendations for future research. BACKGROUND: New technologies can offer numerous benefits to nurses; however, it is challenging to evaluate health information technologies in relation to the quality of nurses' complex day-to-day work. DESIGN: A systematic integrative review using a five-step process. METHODS: Five databases were searched using search terms "nurs*," "workload," "task," "time." Data screening, extraction and interpretation were conducted independently by at least two authors and agreement verified by discussion. Data extraction followed PRISMA guidelines. RESULTS: Of the 41 studies included, most (87.8%, n = 36) examined physical dimensions of nursing work; 31.7% (n = 13) organisational dimensions; 17.1% (n = 8) cognitive dimensions; and only 12.2% (n = 5) emotional dimensions. More than half (58.5%, n = 24) examined only one dimension; one captured all four dimensions. Most frequently examined technologies were electronic medical/health records (36.5%) and electronic medication management (19.5%). Direct observation (58.8%, n = 28) and multiple methods (19.5%, n = 8) were the most common methods; nurse tasks, frequency, duration and time distribution were variables most often measured. CONCLUSIONS: Examinations of technology in nursing work often failed to capture the multiple dimensions of this work nor did they recognise the complexity of day-to-day nursing work in acute care. There is a paucity of literature to inform how and what technology should be measured in relation to the quality of nursing care. RELEVANCE TO CLINICAL PRACTICE: The outcomes inform useful research methods to comprehensively examine technology to enhance the quality of complex nursing work.

A cross-sectional study of domestic violence instruction in nursing and midwifery programs: Out of step with community and student expectations.

BACKGROUND: Domestic violence is a global health concern. Nurses and midwives must respond to those who experience domestic violence, although many are not prepared to do this. The World Health Organization recommend that domestic violence content be included in all pre-registration training as a matter of urgency. OBJECTIVES: To examine self-reported undergraduate student perceptions of domestic violence content in their programs of study and student attitudes and beliefs about domestic violence. DESIGN: A cross-sectional research design with online survey was employed from June to October 2017. METHODS: Using convenience sampling, 1076 students were recruited to the study from a total population sample of just over 6000 undergraduate nursing and midwifery students; a response rate of 17.9%. Survey data reported the nature and frequency of teaching and learning along with student attitudes and beliefs about domestic violence. Open ended responses were examined via thematic analysis. SETTINGS: Nine Australian universities offering undergraduate nursing and midwifery degrees. PARTICIPANTS: Undergraduate university nursing and midwifery students. RESULTS: Over half of students surveyed (53.7%, n = 578) reported that domestic violence was not addressed in their program of study. A direct correlation was found between students' perceived preparedness to assess and respond to domestic violence, and the amount of taught content in their program of study. CONCLUSION: This major gap in curricula has significant implications for professional practice preparedness. Further research should focus on examining the reasons why quality domestic violence content is lacking in undergraduate nursing and midwifery programs and how prioritisation of domestic violence content can be improved.

Diversity of Free-Living Environmental Bacteria and Their Interactions With a Bactivorous Amoeba.

A small subset of bacteria in soil interact directly with eukaryotes. Which ones do so can reveal what is important to a eukaryote and how eukaryote defenses might be breached. Soil amoebae are simple eukaryotic organisms and as such could be particularly good for understanding how eukaryote microbiomes originate and are maintained. One such amoeba, Dictyostelium discoideum, has both permanent and temporary associations with bacteria. Here we focus on culturable bacterial associates in order to interrogate their relationship with D. discoideum. To do this, we isolated over 250 D. discoideum fruiting body samples from soil and deer feces at Mountain Lake Biological Station. In one-third of the wild D. discoideum we tested, one to six bacterial species were found per fruiting body sorus (spore mass) for a total of 174 bacterial isolates. The remaining two-thirds of D. discoideum fruiting body samples did not contain culturable bacteria, as is thought to be the norm. A majority (71.4%) of the unique bacterial haplotypes are in Proteobacteria. The rest are in either Actinobacteria, Bacteriodetes, or Firmicutes. The highest bacterial diversity was found in D. discoideum fruiting bodies originating from deer feces (27 OTUs), greater than either of those originating in shallow (11 OTUs) or in deep soil (4 OTUs). Rarefaction curves and the Chao1 estimator for species richness indicated the diversity in any substrate was not fully sampled, but for soil it came close. A majority of the D. discoideum-associated bacteria were edible by D. discoideum and supported its growth (75.2% for feces and 81.8% for soil habitats). However, we found several bacteria genera were able to evade phagocytosis and persist in D. discoideum cells through one or more social cycles. This study focuses not on the entire D. discoideum microbiome, but on the culturable subset of bacteria that have important eukaryote interactions as prey, symbionts, or pathogens. These eukaryote and bacteria interactions may provide fertile ground for investigations of bacteria using amoebas to gain an initial foothold in eukaryotes and of the origins of symbiosis and simple microbiomes.

Aristaless Controls Butterfly Wing Color Variation Used in Mimicry and Mate Choice.

Neotropical Heliconius butterflies display a diversity of warningly colored wing patterns, which serve roles in both Müllerian mimicry and mate choice behavior. Wing pattern diversity in Heliconius is controlled by a small number of unlinked, Mendelian "switch" loci [1]. One of these, termed the K locus, switches between yellow and white color patterns, important mimicry signals as well as mating cues [2-4]. Furthermore, mate preference behavior is tightly linked to this locus [4]. K controls the distribution of white versus yellow scales on the wing, with a dominant white allele and a recessive yellow allele. Here, we combine fine-scale genetic mapping, genome-wide association studies, gene expression analyses, population and comparative genomics, and genome editing with CRISPR/Cas9 to characterize the molecular basis of the K locus in Heliconius and to infer its evolutionary history. We show that white versus yellow color variation in Heliconius cydno is due to alternate haplotypes at a putative cis-regulatory element (CRE) downstream of a tandem duplication of the homeodomain transcription factor aristaless. Aristaless1 (al1) and aristaless2 (al2) are differentially regulated between white and yellow wings throughout development with elevated expression of al1 in developing white wings, suggesting a role in repressing pigmentation. Consistent with this, knockout of al1 causes white wings to become yellow. The evolution of wing color in this group has been marked by retention of the ancestral yellow color in many lineages, a single origin of white coloration in H. cydno, and subsequent introgression of white color from H. cydno into H. melpomene.

The need to know: The information needs of parents of infants with an intellectual disability-a qualitative study.

AIM: The aim of this study was to explore the information needs of parents of infants with an intellectual disability in the first year of life. BACKGROUND: Parents whose infant has an intellectual disability need access to information if they are to facilitate optimal care for their child. A lack of timely, accurate information provision by health professionals, particularly nurses and midwives, can increase parental stress and hinder access to the supports they and their infant require. DESIGN: A qualitative descriptive methodology was used for the study. METHODS: Qualitative interviews were undertaken with parents of 11 children with intellectual disabilities in Victoria, Australia in 2014. Data were analysed using descriptive thematic analysis. FINDINGS: Parents experienced challenges accessing quality information during the first year of their child's life. Parents required incremental information provision to build a strong knowledge base to facilitate optimal care for their infants. Three types of knowledge were identified as crucial for parents: knowledge about (1) the infant's condition; (2) the infant's specific needs and (3) available supports and services. Health professionals were the key resource to access this information. CONCLUSION: Health professionals' responsibilities include providing relevant, timely information to parents of infants with intellectual disabilities. This study conceptualises three types of information parents need to develop a strong knowledge base to guide their infant's care and provides guidance concerning the optimal timing for the delivery of information.

The first year: the support needs of parents caring for a child with an intellectual disability.

AIM: To describe the support needs of parents caring for a child with an intellectual disability in the first year of life. BACKGROUND: Parents of children with intellectual disabilities face significant challenges during the first year of their child's life which is an important developmental period not previously addressed in the literature. The provision of support by health professionals, particularly nurses and midwives, during this crucial period can impact on parental well-being and on the health and developmental outcomes of their children. However, parents often feel unsupported. DESIGN: The study used a qualitative descriptive methodology. METHODS: Semi-structured interviews were conducted with parents of eleven children with an intellectual disability in Victoria, Australia, during 2014. Interviews were digitally recorded, transcribed verbatim and analysed using thematic data analysis. FINDINGS: Three key areas of support need were identified to assist parents to provide effective care for their child with an intellectual disability in the first year of life: (1) emotional support as parents adjusted to their role of caring for a child with an intellectual disability; (2) information support as they embarked on a quest for knowledge; and (3) support to facilitate their connection to peer networks. The findings highlighted inconsistent provision of support for parents. CONCLUSION: This study informs health professionals about how to provide holistic, timely support to parents of children with intellectual disabilities in the first year of life. There is an urgent need to review how nurses and midwives can provide relevant support that is responsive to parents' needs.

Ribavirin: the need for exposure precautions.

Ribavirin is used in the treatment of respiratory syncytial virus (RSV) in high-risk patients, including patients who have undergone hematopoietic stem cell transplantation, to reduce mortality from RSV pneumonia. It is classified as a hazardous drug with potential for carcinogenicity and teratogenicity. Very few recent studies have examined the risk of exposure, and recommendations for exposure precautions are lacking. Administration should include the use of personal protective equipment and terminal cleaning of the patient room after each administration. This article examines ribavirin use among patients who have undergone hematopoietic stem cell transplantation and have RSV-related pneumonia and explores safety considerations for staff. Nursing leaders on a hematopoietic stem cell transplantation unit addressed gaps in knowledge about ribavirin therapy, and completed a review of the hospital's ribavirin policy, which led to policy revisions, increased knowledge about the safe administration of ribavirin, and improvements in staff and patient education.

Collection and cultivation of dictyostelids from the wild.

Dictyostelium discoideum is a commonly used model organism for the study of biological processes such as chemotaxis, cell communication, and development. While these studies primarily focus on a single clone, recent work has revealed a host of questions that can only be answered from studies of multiple genetically distinct clones. Understanding intraspecific clone conflict, kin recognition, differential adhesion, and other kinds of interactions likely to occur in the natural soil habitat can only come from studies of multiple clones. Studies of populations of wild isolates are also important for understanding the factors contributing to associations such as species co-occurrences and to observed inter- and intraspecific interactions such as those found between bacteria and D. discoideum. Natural isolates of Dictyostelium are easily found in soil and leaf litter in nearly all habitats. Here we describe a simple and successful method for isolating new wild clones from soil, then isolating single clonal strains, and storing them for future use.

Genetic diversity in the social amoeba Dictyostelium discoideum: population differentiation and cryptic species.

The social amoeba Dictyostelium discoideum is a commonly used model organism for the study of social evolution, multicellularity, and cell biology. But the boundaries and structure of the species have not been explored. The lack of morphological traits to distinguish D. discoideum makes even knowing whether a given clone is D. discoideum a challenge. We address this with a phylogeny of a widespread collection of clones from a range of locations and including clones identified previously as potential cryptic species. We sequenced portions of nuclear ribosomal DNA and mitochondrial DNA, analyzing approximately 5500 and 2500 base pairs from the two regions respectively. We compared these sequences to known reference sequences for both D. discoideum and other closely related Dictyostelium species to create Bayesian and neighbor-joining phylogenetic trees representing the evolutionary relationships among the clones. We identified 51 unique D. discoideum concatenated sequences based on the combined mitochondrial and ribosomal sequence data. We also identified four unique D. citrinum concatenated sequences, three of which were previously classified as D. discoideum clones. Our analysis of the data revealed that all D. discoideum clones form a monophyletic group, but there are several well-supported subclades and pronounced genetic differentiation among locations (F(ST)=0.242, P=0.011), suggesting the presence of geographic or other barriers between populations. Our results reveal the need for further investigation into potential tropical cryptic species.

Primitive agriculture in a social amoeba.

Agriculture has been a large part of the ecological success of humans. A handful of animals, notably the fungus-growing ants, termites and ambrosia beetles, have advanced agriculture that involves dispersal and seeding of food propagules, cultivation of the crop and sustainable harvesting. More primitive examples, which could be called husbandry because they involve fewer adaptations, include marine snails farming intertidal fungi and damselfish farming algae. Recent work has shown that microorganisms are surprisingly like animals in having sophisticated behaviours such as cooperation, communication and recognition, as well as many kinds of symbiosis. Here we show that the social amoeba Dictyostelium discoideum has a primitive farming symbiosis that includes dispersal and prudent harvesting of the crop. About one-third of wild-collected clones engage in husbandry of bacteria. Instead of consuming all bacteria in their patch, they stop feeding early and incorporate bacteria into their fruiting bodies. They then carry bacteria during spore dispersal and can seed a new food crop, which is a major advantage if edible bacteria are lacking at the new site. However, if they arrive at sites already containing appropriate bacteria, the costs of early feeding cessation are not compensated for, which may account for the dichotomous nature of this farming symbiosis. The striking convergent evolution between bacterial husbandry in social amoebas and fungus farming in social insects makes sense because multigenerational benefits of farming go to already established kin groups.