bluuebunny/crossref_metadata_2025_split huggingface dataset:
Assessment of the potential of wild Ipomoea spp. for the improvement of drought tolerance in cultivated sweetpotato Ipomoea batatas (L.) Lam
Authors: Nhanala Stella E. C. , Yencho G. Craig 
Published: October 2020

AbstractSweetpotato [Ipomoea batatas (L.) Lam] is cultivated worldwide, and it is a staple food in many developing countries. In some regions (e.g., Africa) drought is a major production constraint that results in significant yield loss. Climate change is predicted to result in even greater losses due to long periods of drought and elevated temperatures. The goal of this study was to assess the potential of wild Ipomoea spp. as a source of drought tolerance in cultivated sweetpotato. We evaluated the drought tolerance of I. batatas, I. cynanchifolia, I. leucantha, I. trifida and I. triloba in a randomized complete block design, with five levels of simulated drought: control (daily irrigation), and no irrigation for 7, 9, 21 and 50 days. We observed that post drought re‐irrigation of the wild species subjected to 21 days of stress resulted in plant recovery and an increase of the stomatal conductance of up to 99% in I. leucantha. However, under extreme stress (50 d) the wild plants did not respond to re‐irrigation, resulting in up to 89% (I. leucantha) plant mortality. The wild species did not produce storage roots, while the I. batatas cultivars produced storage roots. Under 50 days of stress I. batatas had a survival rate between 44% (cv. Tanzania) and 89% (cv. Beauregard). We concluded that the wild genotypes screened may not be a valuable source of germplasm for drought tolerance and that significant levels of drought tolerance may exist in cultivated sweetpotato.
Dynamic iteration schemes and port‐Hamiltonian formulation in coupled differential‐algebraic equation circuit simulation
Authors: Günther Michael , Bartel Andreas , Jacob Birgit , Reis Timo 
Published: October 2020

SummaryElectric circuits are usually described by charge/flux‐oriented modified nodal analysis. Here, we derive models as port‐Hamiltonian systems on several levels: overall systems, multiply coupled systems, and systems within dynamic iteration procedures. To this end, we introduce new classes of port‐Hamiltonian differential‐algebraic equations. Thereby, we additionally allow for nonlinear dissipation on a subspace of the state space. Both, each subsystem and the overall system possess a port‐Hamiltonian structure. A structural analysis is performed for the new setups. Dynamic iteration schemes are investigated, and we show that the Jacobi approach as well as an adapted Gauss‐Seidel approach lead to port‐Hamiltonian differential‐algebraic equations.
Genetic variability, management, and conservation implications of the critically endangered Brazilian pitviper Bothrops insularis
Authors: Salles‐Oliveira Igor , Machado Taís , Banci Karina Rodrigues da Silva , Almeida‐Santos Selma M. , Silva Maria José de J. 
Published: October 2020

AbstractInformation on demographic, genetic, and environmental parameters of wild and captive animal populations has proven to be crucial to conservation programs and strategies. Genetic approaches in conservation programs of Brazilian snakes remain scarce despite their importance for critically endangered species, such as Bothrops insularis, the golden lancehead, which is endemic to Ilha da Queimada Grande, coast of São Paulo State, Brazil. This study aims to (a) characterize the genetic diversity of ex situ and in situ populations of B. insularis using heterologous microsatellites; (b) investigate genetic structure among and within these populations; and (c) provide data for the conservation program of the species. Twelve informative microsatellites obtained from three species of the B. neuwiedi group were used to access genetic diversity indexes of ex situ and in situ populations. Low‐to‐medium genetic diversity parameters were found. Both populations showed low—albeit significant—values of system of mating inbreeding coefficient, whereas only the in situ population showed a significant value of pedigree inbreeding coefficient. Significant values of genetic differentiation indexes suggest a small differentiation between the two populations. Discriminant analysis of principal components (DAPC) recovered five clusters. No geographic relationship was found in the island, suggesting the occurrence of gene flow. Also, our data allowed the establishment of six preferential breeding couples, aiming to minimize inbreeding and elucidate uncertain parental relationships in the captive population. In a conservation perspective, continuous monitoring of both populations is demanded: it involves the incorporation of new individuals from the island into the captive population to avoid inbreeding and to achieve the recommended allelic similarity between the two populations. At last, we recommend that the genetic data support researches as a base to maintain a viable and healthy captive population, highly genetically similar to the in situ one, which is crucial for considering a reintroduction process into the island.
The dynamic trophic niche of an island bird of prey
Authors: Balza Ulises , Lois Nicolás A. , Polito Michael J. , Pütz Klemens , Salom Amira , Raya Rey Andrea 
Published: October 2020

AbstractOptimal foraging theory predicts an inverse relationship between the availability of preferred prey and niche width in animals. Moreover, when individuals within a population have identical prey preferences and preferred prey is scarce, a nested pattern of trophic niche is expected if opportunistic and selective individuals can be identified. Here, we examined intraspecific variation in the trophic niche of a resident population of striated caracara (Phalcoboenus australis) on Isla de los Estados (Staten Island), Argentina, using pellet and stable isotope analyses. While this raptor specializes on seabird prey, we assessed this population's potential to forage on terrestrial prey, especially invasive herbivores as carrion, when seabirds are less accessible. We found that the isotopic niche of this species varies with season, age, breeding status, and, to a lesser extent, year. Our results were in general consistent with classic predictions of the optimal foraging theory, but we also explore other possible explanations for the observed pattern. Isotopic niche was broader for groups identified a priori as opportunistic (i.e., nonbreeding adults during the breeding season and the whole population during the nonbreeding season) than it was for individuals identified a priori as selective. Results suggested that terrestrial input was relatively low, and invasive mammals accounted for no more than 5% of the input. The seasonal pulse of rockhopper penguins likely interacts with caracara's reproductive status by constraining the spatial scale on which individuals forage. Niche expansion in spatially flexible individuals did not reflect an increase in terrestrial prey input; rather, it may be driven by a greater variation in the types of marine prey items consumed.
Genetic structure of recently fragmented suburban populations of European stag beetle
Authors: Cox Karen , McKeown Niall , Vanden Broeck An , Van Breusegem An , Cammaerts Roger , Thomaes Arno 
Published: October 2020

AbstractHabitat loss and fragmentation due to urbanization can negatively affect metapopulation persistence when gene flow among populations is reduced and population sizes decrease. Inference of patterns and processes of population connectivity derived from spatial genetic analysis has proven invaluable for conservation and management. However, a more complete account of population dynamics may be obtained by combining spatial and temporal sampling. We, therefore, performed a genetic study on European stag beetle (Lucanus cervus L.) populations in a suburban context using samples collected in three locations and during the period 2002–2016. The sampling area has seen recent landscape changes which resulted in population declines. Through the use of a suite of FST, clustering analysis, individual assignment, and relatedness analysis, we assessed fine scale spatiotemporal genetic variation within and among habitat patches using 283 individuals successfully genotyped at 17 microsatellites. Our findings suggested the three locations to hold demographically independent populations, at least over time scales of relevance to conservation, though with higher levels of gene flow in the past. Contrary to expectation from tagging studies, dispersal appeared to be mainly female‐biased. Although the life cycle of stag beetle suggests its generations to be discrete, no clear temporal structure was identified, which could be attributed to the varying duration of larval development. Since population bottlenecks were detected and estimates of effective number of breeders were low, conservation actions are eminent which should include the establishment of suitable dead wood for oviposition on both local and regional scales to increase (re)colonization success and connectivity among current populations.
Extended phenotypes on coral reefs: cryptic phenotypes modulate coral‐vermetid interactions
Authors: Brown A. L. , Hamman E. A. , Shima J. S. , Wares J. P. , Osenberg C. W. 
Published: October 2020

AbstractPhenotypic variation can lead to variation in the strength and outcome of species interactions. Variation in phenotypic traits can arise due to plastic responses to environmental stimuli, underlying genetic variation, or both, and may reflect differences in the focal organism or aspects of the extended phenotype (e.g., associated microbes). We used a reciprocal transplant experiment of Porites corals to evaluate the role of plasticity vs. heritable diversity on phenotypic traits and performance of corals that varied in their prior exposure to vermetid gastropods, an organism known to reduce coral growth and survival. We measured a suite of phenotypic traits associated with coral performance, many of which showed a plastic response to vermetid exposure. Vermetids decreased calcification of corals, increased microbial diversity, and shifted microbial composition. Most traits also showed a signature of previous exposure environment that persisted even when exposure was reversed: i.e., under the same conditions, corals naïve to vermetids had slower calcification rates, thicker tissues, higher Symbiodiniaceae densities, and different microbiomes than corals previously exposed to vermetids. We suggest the phenotypic differences are heritable, as reefs with and without vermetids were comprised of two different mitotypes, that revealed high, consistent genetic variation. Vermetids were only found on the fast‐growing coral mitotype that was characterized by thin tissue, and that likely had a history of disturbance. As extended phenotypes can have community impacts, we suggest vermetid, in addition to microbes, are part of the extended community phenotype of these corals. Coral genotypes can establish different reef trajectories, with thin‐tissue types more prone to disturbance and subsequent colonization by other species, like vermetids, which can further facilitate the degradation of coral reefs. The effects of the extended phenotype of species likely influence heterogeneity across landscapes as well as temporal differences in community composition.
Hidden introductions of freshwater red algae via the aquarium trade exposed by DNA barcodes
Authors: Zhan Shing Hei , Hsieh Tsai‐Yin , Yeh Lan‐Wei , Kuo Ting‐Chun , Suda Shoichiro , Liu Shao‐Lun 
Published: October 2020

AbstractThe global aquarium trade can introduce non‐native invasive freshwater organisms, which can impact local aquatic ecosystems and their biodiversity. It is unassessed whether the aquarium trade spreads freshwater red macroalgae that hitchhike on ornamental aquatic plants and animals. We investigated this via a broad biodiversity survey and genetic analysis of freshwater red algae in the field and aquarium shops in East Asia. Using rbcL‐based DNA barcoding, we surveyed 125 samples from 46 field sites and 88 samples from 53 aquarium shops (213 samples in total) mostly across Taiwan—a key hub in the global aquarium trade—as well as in Hong Kong, Okinawa (Japan), the Philippines, and Thailand. We augmented our rbcL sequences with GenBank rbcL sequences that represent 40 additional countries globally. We found 26 molecular operational taxonomic units (mOTUs), some of which are cryptic, in Taiwan. Phylogeographical analysis revealed three potential introduced mOTUs, which exhibit no local genetic variation in Taiwan and are distributed across continents. Also, we posit that aquaria may serve as an unintentional ex situ conservation site for freshwater red algae that are vulnerable to water pollution due to anthropogenic disturbances. Collectively, these data suggest that freshwater red algae have been hitchhiking and dispersed via the aquarium trade, an important and overlooked mechanism of introduction of the organisms across the globe.
Nickel and Tungsten Bimetallic Nanoparticles Modified Pencil Graphite Electrode: A High‐performance Electrochemical Sensor for Detection of Endocrine Disruptor Bisphenol A
Authors: Lavanya Akkaraboyina Lakshmi , Kumari K. Gowri Bala , Prasad K. R. S. , Kumar Brahman Pradeep 
Published: October 2020

AbstractIn this work, an economically viable, very low cost, indigenous, ubiquitously available electrochemical sensor based on bimetallic nickel and tungsten nanoparticles modified pencil graphite electrode (NiNP‐WNP@PGE) was fabricated for the sensitive and selective detection of bisphenol A (BPA). The NiNP‐WNP@PGE sensor was prepared by a facile electrochemical one step co‐deposition method. The prepared nanocomposite was morphologically characterized by scanning electron microscopy (SEM), energy dispersive X‐ray (EDX), X‐ray diffraction (XRD), electrochemically by cyclic voltammetry (CV), and electrochemical impedance spectroscopy (EIS). The proposed sensor displayed high electrocatalytic activity towards electro‐oxidation of BPA with one irreversible peak. The fabricated sensor displayed a wide detection window between 0.025 μM and 250 μM with a limit of detection of 0.012 μM. PGE sensor was successfully engaged for the detection of BPA in bottled water, biological, and baby glass samples.
Adaptive evaluation model of web spam based on link relation
Authors: Wang Jingjing , Han Lansheng , Zhou Man , Qian Wenkui , An Dezhi 
Published: October 2020

AbstractThe credibility evaluation of web pages is an important part of current network information mining. Generally, content‐based evaluation and link relationship‐based evaluation are used to detect web spam. This paper proposes an algorithm based on link relationship which adjusts the weight of the link object according to the credibility of the link object to calculate the credibility of the web page. Considering the different linking conditions, (i) low‐scoring web pages actively linking to high‐scoring web pages, resulting in the reduction of high‐scoring web pages score; (ii) in order to endorse the low‐score web page, high‐score web pages actively linking to the low‐score web pages, adjust the score transmission. Obviously, the proposed algorithm is a recursive model. To avoid the amplification of the error caused by the loop and different evaluation results caused by different initial nodes, this paper presents a novel method to adaptively adjust the weights of the links according to the link conditions, then proves the convergence of the algorithm. Finally, we validate the proposed algorithm on the public datasets, which is compared with other up‐to‐date algorithms under different experimental indexes. The results show that the proposed algorithm can effectively reduce the ranks of spam pages in all web pages and improve the detection efficiency of spam pages.
Individual resting‐state frontocingular functional connectivity predicts the intermittent theta burst stimulation response to stress in healthy female volunteers
Authors: de Wandel Linde , Pulopulos Matias M. , Labanauskas Vytautas , de Witte Sara , Vanderhasselt Marie‐Anne , Baeken Chris 
Published: October 2020

AbstractIntermittent theta burst stimulation (iTBS) delivered to the dorsolateral prefrontal cortex (DLPFC) has been investigated as a promising treatment for stress and stress‐related mental disorders such as major depression, yet large individual differences in responsiveness demand further exploration and optimization of its effectiveness. Clinical research suggests that resting‐state functional connectivity (rsFC) between the DLPFC and the anterior cingulate cortex (ACC) can predict iTBS treatment response in depression. The present study aimed to investigate whether rsFC between the left DLPFC and ACC subregions could predict the degree to which the stress system is affected by iTBS. After assessment of baseline resting‐state fMRI data, 34 healthy female participants performed the Trier Social Stress Test on two separate days, each followed by active or sham iTBS over the left DLPFC. To evaluate iTBS effects on the stress‐system, salivary cortisol was measured throughout the procedure. Our results showed that a stronger negative correlation between the left DLPFC and the caudal ACC was linked to a larger attenuation of stress‐system sensitivity during active, but not during sham iTBS. In conclusion, based on individual rsFC between left DLPFC and caudal ACC, iTBS could be optimized to more effectively attenuate deregulation of the stress system.
Outpatient vs inpatient parotidectomy: Systematic review and meta‐analysis
Authors: Benito Daniel A. , Pasick Luke J. , Bestourous Daniel , Thakkar Punam , Goodman Joseph F. , Joshi Arjun S. 
Published: October 2020

AbstractThe primary aim of this study was to conduct a systematic review and meta‐analysis to compare complications between outpatient vs inpatient parotidectomy. A systematic review was performed to identify patients undergoing either outpatient or inpatient partodiectomy, in accordance with Preferred Reporting Items for Systematic Reviews and Meta‐Analysis guidelines, using PUBMED, SCOPUS, CINAHL, and the Cochrane library. Risk of bias was assessed using the Newcastle‐Ottawa Scale. Postoperative complications (hematoma, seroma/sialocele, salivary fistula formation, Frey syndrome, surgical site infection [SSI]) were compared. Our search yielded 4958 nonduplicate articles, of which 13 studies were ultimately included (11 retrospective cohort, 2 prospective cohort), encompassing a total of 1323 patients (outpatient 46.33% vs inpatient 53.67%). There was no significant difference in total complications, hematoma, seroma, salivary fistula, or SSI rates between outpatient and inpatient groups. No significant difference in total complications was found between outpatient and inpatient groups when stratified by surgical approach (partial/superficial and total parotidectomy). Our findings suggest outpatient parotidectomy may be as safe as inpatient parotidectomy in appropriately selected patients.
Self‐reported medication adherence in differentiated thyroid cancer survivors: Role of illness perception and medication beliefs
Authors: Basım Pelin , Argun Derya , Özdenkaya Yaşar 
Published: October 2020

AbstractBackgroundTo investigate medication adherence (MA) to Levothyroxine in differentiated thyroid cancer survivors and analyze the related factors for nonadherence.MethodsThe Medication Adherence Report Scale (MARS), Hospital Anxiety and Depression Scale (HAD), Brief Illness Perception Questionnaire (B‐IPQ), and Beliefs about Medicines Questionnaire (BMQ) were used to assess MA.ResultsNonadherence was reported in 77 of 197 patients (39.1%). Socioeconomic status and education levels were found to be significantly related to MA. The HAD scores, all items of B‐IPQ, and BMQ were associated with MA and showed a correlation with the MARS scores. The primary predictors of MA were greater confidence in treatment modality (odds ratio [OR]: 0.48, 95% confidence interval (CI): 0.37‐0.63) and greater belief that the medication had minimal risk of harm (OR: 3.35, 95% CI: 1.50‐7.49).ConclusionsSpecial attention should be paid to educational programs for differentiated thyroid carcinoma patients concerning the effectiveness and low risk of harm of medication in order to improve MA.
Modeling Outcomes in Children With Biliary Atresia With Native Liver After 2 Years of Age
Authors: Venkat Veena , Ng Vicky L. , Magee John C. , Ye Wen , Hawthorne Kieran , Harpavat Sanjiv , Molleston Jean P. , Murray Karen F. , Wang Kasper S. , Soufi Nisreen , Bass Lee M. , Alonso Estella M. , Bezerra Jorge A. , Jensen M. Kyle , Kamath Binita M. , Loomes Kathleen M. , Mack Cara L. , Rosenthal Philip , Shneider Benjamin L. , Squires Robert H. , Sokol Ronald J. , Karpen Saul J. ,   for the Childhood Liver Disease Research Network
Published: October 2020

Approximately 50% of infants with biliary atresia (BA) undergoing Kasai portoenterostomy show survival with native liver (SNL) at age 2 years. Predictors of disease progression after age 2 years are unknown, despite estimates of 20%‐30% undergoing liver transplant (LT) between age 2 and 18 years. We sought to address this knowledge gap by developing prognostic models in participants of the multicenter prospective National Institutes of Health‐supported Childhood Liver Disease Research Network. We extracted 14 clinical and biochemical variables at age 2 years to develop two models for future outcomes: 1) LT or death (LTD) and 2) first sentinel event (SE), either new onset ascites, hepatopulmonary syndrome (HPS), or gastrointestinal (GI) bleed. A total of 240 participants, enrolled between 2004 and 2017, were followed until a median age of 5.1 years (range, 2.0‐13.3 years). Of these participants, 38 underwent LT (n = 37) or death (n = 1); cumulative incidence, 23.7% (95% confidence interval [CI], 16.2%‐32.0%). Twenty‐seven experienced either new‐onset ascites (n = 13), HPS (n = 1), or GI bleed (n = 14). One participant had ascites and GI bleed concurrently; cumulative incidence, 21.5% (95% CI, 14.2%‐29.8%) by age 10 years. The Cox proportional hazard model predicted risk of LTD, using total bilirubin, albumin, platelet count, and history of either ascites or cholangitis (BA LTD model), with a C‐index of 0.88 (range, 0.86‐0.89). A cause‐specific hazard competing risk model predicted SE using platelet count and gamma glutamyltransferase levels (BA SE model) with a C‐index of 0.81 (range, 0.80‐0.84). Internal model validity was assessed using Harrell’s C‐index with cross‐validation. Conclusion: Stratification using these models identified risk of poor outcomes in patients with BA SNL after age 2 years. The models may identify those who would benefit from enhanced clinical surveillance and prioritization in clinical trials.