Australian Bryobia mites (Trombidiformes: Tetranychidae) form a complex of cryptic taxa with unique climatic niches and insecticide responses.

BACKGROUND: Bryobia (Koch) mites belong to the economically important spider mite family, the Tetranychidae, with >130 species described worldwide. Due to taxonomic difficulties and most species being asexual, species identification relies heavily on genetic markers. Multiple putative Bryobia mite species have been identified attacking pastures and grain crops in Australia. In this study, we collected 79 field populations of Bryobia mites and combined these with 134 populations that were collected previously. We characterised taxonomic variation of mites using 28S rDNA amplicon-based DNA metabarcoding using next-generation sequencing approaches and direct Sanger sequencing. We then undertook species distribution modelling of the main genetic lineages and examined the chemical responses of multiple field populations. RESULTS: We identified 47 unique haplotypes across all mites sampled that grouped into four distinct genetic lineages. These lineages have different distributions, with three of the four putative lineages showing different climatic envelopes, as inferred from species distribution modelling. Bryobia mite populations also showed different responses to a widely used insecticide (the organophosphate, omethoate), but not to another chemical (the pyrethroid, bifenthrin) when examined using laboratory bioassays. CONCLUSION: Our findings indicate that cryptic diversity is likely to complicate the formulation of management strategies for Bryobia mites. Although focussed on Australia, this study demonstrates the challenges of studying Bryobia and highlights the importance of further research into this complex group of mites across the world. © 2022 The Authors. Pest Management Science published by John Wiley & Sons Ltd on behalf of Society of Chemical Industry.

The Unintended Consequences of the Pandemic: The New Normal for College Students in South Korea and Taiwan.

This study attempts to compare the impacts of the coronavirus (COVID-19) pandemic on college students' lifestyles and mental health conditions in South Korea and Taiwan. As the COVID-19 outbreak has spread across the globe, it has brought significant changes to college campuses worldwide. College students have been heavily affected by the closure, as online learning has become increasingly common in higher education institutions. Using data collected from college students in South Korea and Taiwan in the spring of 2020, this study examines the effects of pandemic-related lifestyle changes on mental health conditions for college students in the two countries. The results were 3-fold. First, compared to college students in Taiwan, college students in South Korea reported greater decreases in time spent traveling, being with friends, eating at restaurants, and engaging in part-time employment, and greater increases in online shopping and ordering food for delivery. Second, college students in South Korea reported a higher level of worry, a greater possibility of contact with a person with COVID-19, and a lower level of happiness than did college students in Taiwan. Third, our findings indicate that social activities, including spending time with friends, were positively correlated with mental health conditions in South Korea and Taiwan. Comparing Korean and Taiwanese students' lifestyle changes and mental health conditions amid the pandemic, the study argues that the decrease in socialization and interaction under these new circumstances may be a significant factor that explains an increase in mental health issues in Korean college students compared to Taiwanese students, given the increase in confirmed COVID-19 cases in South Korea and the corresponding greater use of online teaching platforms there than in Taiwan.

Multispecies models reveal that eDNA metabarcoding is more sensitive than backpack electrofishing for conducting fish surveys in freshwater streams.

Environmental DNA (eDNA) sampling can provide accurate, cost-effective, landscape-level data on species distributions. Previous studies have compared the sensitivity of eDNA sampling to traditional sampling methods for single species, but similar comparative studies on multispecies eDNA metabarcoding are rare. Using hierarchical site occupancy detection models, we examined whether key choices associated with eDNA metabarcoding (primer selection, low-abundance read filtering and the number of positive water samples used to classify a species as present at a site) affect the sensitivity of metabarcoding, relative to backpack electrofishing for fish in freshwater streams. Under all scenarios (teleostei and vertebrate primers; 0%, 0.1% and 1% read filtering thresholds; one or two positive samples required to classify species as present), we found that eDNA metabarcoding is, on average, more sensitive than electrofishing. Combining vertebrate and teleostei markers resulted in higher detection probabilities relative to the use of either marker in isolation. Increasing the threshold used to filter low-abundance reads decreased species detection probabilities but did not change our overall finding that eDNA metabarcoding was more sensitive than electrofishing. Using a threshold of two positive water samples (out of five) to classify a species as present typically had negligible effects on detection probabilities compared to using one positive water sample. Our findings demonstrate that eDNA metabarcoding is generally more sensitive than electrofishing for conducting fish surveys in freshwater streams, and that this outcome is not sensitive to methodological decisions associated with metabarcoding.

Administration of Kyung-Ok-Ko reduces stress-induced depressive behaviors in mice through inhibition of inflammation pathway.

ETHNOPHARMACOLOGICAL RELEVANCE: Kyung-Ok-Ko (KOK), a traditional medicinal formula composed of Rehmannia glutinosa (Gaertn.) DC, Poria cocos (Schw.) Wolf, Korean Red Panax ginseng C.A.Mey, and honey, has been used to treat amnesia and dementia. KOK has also been shown to ameliorate transient cerebral global ischemia-induced brain damage, but the antidepressant-like effect of KOK has not been examined. AIM OF THE STUDY: This study examined the antidepressant-like effect of KOK in an immobilization-induced stress mouse and its mechanisms of action. MATERIALS AND METHODS: The animals in the stress group were immobilized for two hours a day for two weeks. KOK at a dose of 1 g/kg/day was administered orally to the stressed mice for two weeks in advance of their immobilization. A forced swimming test was performed to analyze their depressive behaviors. To examine the anti-inflammatory or antioxidative effects of KOK, the murine macrophage cell line, RAW 264.7 cells and human neuroblastoma cell, SH-SY5Y cells, were treated with lipopolysaccharide (LPS) and hydrogen peroxide, respectively. RESULT: The KOK extract showed no significant toxicity when the cells were treated with a KOK extract at 5, 10, 25, 50, and 100 µg/mL. The KOK ethanol extract reduced LPS-induced TNF-α production, inducible nitric oxide (iNOS) mRNA level, and the levels of MAPK and p38 phosphorylation in RAW 264.7 cells. KOK also suppressed H2O2-induced cell death and the production of reactive oxygen species (ROS) in SH-SY5Y cells. In the forced swimming test, KOK induced a decrease in immobility and an increase in climbing activity. Finally, the administration of KOK reversed the up-regulation of IkB-α phosphorylation in the stressed mouse cortex. CONCLUSION: KOK might be useful for the treatment of depression caused by environmental and lifestyle-related stress.

Effectiveness of digital resuscitation training in improving knowledge and skills: A systematic review and meta-analysis of randomised controlled trials.

AIM: This review aims to evaluate the effectiveness of digital resuscitation training in improving knowledge and skill compared with standard resuscitation training. METHODS: We searched through the CINAHL, Cochrane Library, EMBASE, ERIC, ProQuest Dissertations and Thesis, PsycINFO, PubMed and Scopus from inception of our review until 5 March 2018. The quality of individual and overall evidence was evaluated according to the risk of bias, Medical Education Research Study Quality Instrument (MERSQI) and Grade of Recommendation, Assessment, Development and Evaluation (GRADE) system, respectively. Meta-analyses were performed with the Review Manger software. Z-statistics were used to evaluate the overall effect of training, and I2 test was used to assess heterogeneity. Sensitivity and subgroup analyses were used for additional meta-analyses. RESULTS: Amongst the 15,528 studies retrieved, 20 randomised controlled trials (RCTs) were selected from 13 countries across different ethnicities. More than half (52%) of the trials had a low risk of bias, and MERSQI scores ranged from 13.5 to 15.5. The overall quality of evidence was very low according to GRADE criteria. Meta-analyses revealed that trainees in digital resuscitation training had better knowledge scores but poorer chest compression rates than that of trainees in standard resuscitation training. Digital resuscitation trainings were non-inferior to standard resuscitation trainings in skill performance scores. Subgroup analyses suggested that digital resuscitation training might consider using blended learning approach with virtual patient, computer-screen based, learning theories and video-recorded assessment, especially for basic life support trainings amongst health professionals. CONCLUSION: Despite the wide variation in digital resuscitation trainings, evidence suggesting the use of digital resuscitation training for improving knowledge and skills is inadequate. Well-designed non-inferiority RCTs in multiple settings with follow-up data and large sample size are needed to ensure the robustness of the evidence.

Efficacy of extended-release divalproex combined with "condensed" dialectical behavior therapy for individuals with borderline personality disorder.

BACKGROUND: Borderline personality disorder (BPD) is a significant psychiatric illness for which medication treatments are still being explored. The goal of this study was to assess divalproex extended release (ER) vs placebo for patients receiving dialectal behavior therapy (DBT). METHODS: Patients with BPD received 4 weeks of "condensed DBT." Those with Symptom Checklist-90 (SCL-90) scores >150 after this treatment were then randomly and blindly assigned to placebo or divalproex ER for 12 weeks. Repeated measures analysis of variance utilizing last observation carried forward was used to assess the results. RESULTS: Seventeen participants completed the full assessment. Two patients had a significant decrease in SCL-90 in the first 4 weeks, leaving 15 patients for the medication phase of the trial. There were no significant differences between the participants assigned to divalproex ER compared with placebo. However, there was a significant improvement in both groups from baseline to endpoint (P = .001). CONCLUSIONS: The response of 2 of 17 participants in the first 4 weeks prior to medication may point to a practice strategy in approaching outpatients with BPD. Although the patients had a decrease in symptoms during the study, there was no advantage observed for divalproex ER and DBT over placebo and DBT.

Asymmetric synthesis of secondary alcohols from primary alcohols via intramolecular carbenoid C-H insertion catalyzed by rhodium(II) 3-phenylcholestane-2-carboxylate.

Chiral secondary alcohols may be prepared from primary alcohols via asymmetric C-H insertion reactions of alpha'-alkoxy-alpha-diazoketones catalyzed by rhodium(II)(2R,3R)-3-phenylcholestane-2-carboxylate.