Miracle-dz/UniFAR-FTUs huggingface dataset:
Disturbance-mediated facilitation by an intertidal ecosystem engineer.

Ecosystem engineers facilitate communities by providing a structural habitat that reduces abiotic stress or predation pressure for associated species. However, disturbance may damage or move the engineer to a more stressful environment, possibly increasing the importance of facilitation for associated communities. In this study, we determined how disturbance to intertidal boulders (i.e., flipping) and the subsequent movement of a structural ecosystem engineer, the tube-forming serpulid worm Galeolaria caespitosa, from the bottom (natural state, low abiotic stress) to the top (disturbed state, high abiotic stress) surface of boulders influenced the importance of facilitation for intertidal communities across two intertidal zones. Theory predicts stronger relative facilitation should occur in the harsher environments of the top of boulders and the high intertidal zone. To test this prediction, we experimentally positioned boulders with the serpulids either face up or face down for 12 months in low and high zones in an intertidal boulder field. There were very different communities associated with the different boulders and serpulids had the strongest facilitative effects on the more stressful top surface of boulders with approximately double the species richness compared to boulders lacking serpulids. Moreover, within the serpulid matrix itself there was also approximately double the species richness (both zones) and abundance (high zone only) of small invertebrates on the top of boulders compared to the bottom. The high relative facilitation on the top of boulders reflected a large reduction in temperature by the serpulid matrix on that surface (up to 10°C) highlighting a key role for modification of the abiotic environment in determining the community-wide facilitation. This study has demonstrated that disturbance and subsequent movement of an ecosystem engineer to a more stressful environment increased the importance of facilitation and allowed species to persist that would otherwise be unable to survive in that environment.
Obesity Does Not Affect Treatment Outcomes With Proton Pump Inhibitors

Background: Obesity is associated with increased risk of gastroesophageal reflux disease (GERD). Goal: To evaluate the effect of obesity on symptom resolution in patients with nonerosive reflux disease (NERD) and healing rates in patients with erosive esophagitis (EE). Methods: Two post hoc analyses were performed. Analyses included pooled data from randomized, double-blind, multicenter studies of proton pump inhibitors (PPIs) in GERD patients. Results: Analysis 1 included 704 patients with NERD receiving esomeprazole 20 mg, esomeprazole 40 mg, or placebo. Analysis 2 included 11,027 patients with EE receiving esomeprazole 40 mg, omeprazole 20 mg, or lansoprazole 30 mg. For NERD patients, no significant association between baseline heartburn severity and body mass index (BMI) was observed. In EE patients, overweight (BMI 25 to <35 kg/m2) and obese (BMI ≥35 kg/m2) patients had significantly higher rates of Los Angeles (LA) grade C or D EE than patients with BMI <25 kg/m2 (P<0.0001). Percentages of PPI-treated patients who achieved heartburn resolution or EE healing within a given LA grade were similar across BMI categories. Heartburn resolution was significantly associated with treatment (esomeprazole vs. placebo), increasing age, and for men versus women (all P⩽0.0284). EE healing was significantly associated with PPI treatment (esomeprazole and lansoprazole vs. omeprazole), increasing age, race, presence of a hiatal hernia, and lower LA grade at baseline (all P⩽0.0183). Conclusions: In patients with GERD, high BMI was associated with more severe EE at baseline. However, during PPI treatment, BMI is not a significant independent predictor of heartburn resolution or EE healing.
Predictors of human rotation

Why some humans prefer to rotate clockwise rather than anticlockwise is not well understood. This study aims to identify the predictors of the preferred rotation direction in humans. The variables hypothesised to influence rotation preference include handedness, footedness, sex, brain hemisphere lateralisation, and the Coriolis effect (which results from geospatial location on the Earth). An online questionnaire allowed us to analyse data from 1526 respondents in 97 countries. Factor analysis showed that the direction of rotation should be studied separately for local and global movements. Handedness, footedness, and the item hypothesised to measure brain hemisphere lateralisation are predictors of rotation direction for both global and local movements. Sex is a predictor of the direction of global rotation movements but not local ones, and both sexes tend to rotate clockwise. Geospatial location does not predict the preferred direction of rotation. Our study confirms previous findings concerning the influence of handedness, footedness, and sex on human rotation; our study also provides new insight into the underlying structure of human rotation movements and excludes the Coriolis effect as a predictor of rotation.
GENETIC STRUCTURE OF COEXISTING SEXUAL AND CLONAL SUBPOPULATIONS IN A FRESHWATER SNAIL (POTAMOPYRGUS ANTIPODARUM)

We examined clonal diversity and the distribution of both clonal and sexual genotypes in a single population of freshwater snails (Potamopyrgus antipodarum) in which diploid sexual individuals and triploid parthenogens coexist. A genetic analysis of individuals from three habitat zones in Lake Alexandrina, New Zealand revealed extremely high clonal diversity: 165 genotypes among 605 clonal individuals. The frequency of triploid clonal individuals increased with increasing depth in the lake, and most of the individual clones were habitat specific, suggesting that differences among habitats are important in structuring the clonal subpopulation. There were also high levels of clonal diversity within habitats, suggesting frequent origins of habitat‐specific clones. In contrast, diploid sexual individuals were proportionately more common in the shallow regions of the lake (where infection by trematode larvae is highest), and there was no significant spatial structure in the sexual subpopulation. We suggest that habitat specialization by clones, as well as parasite‐mediated selection against common clones, are important factors affecting the structure of this mixed population of sexual and clonal snails.
Drought-induced mortality patterns and rapid biomass recovery in a terra firme forest in the Colombian Amazon.

Extreme climatic events affecting the Amazon region are expected to become more frequent under ongoing climate change. In this study, we assessed the responses to the 2010 drought of over 14,000 trees ≥10 cm dbh in a 25 ha lowland forest plot in the Colombian Amazon and how these responses varied among topographically defined habitats, with tree size, and with species wood density. Tree mortality was significantly higher during the 2010-2013 period immediately after the drought than in 2007-2010. The post-drought increase in mortality was stronger for trees located in valleys (+243%) than for those located on slopes (+67%) and ridges (+57%). Tree-based generalized linear mixed models showed a significant negative effect of species wood density on mortality and no effect of tree size. Despite the elevated post-drought mortality, aboveground biomass increased from 2007 to 2013 by 1.62 Mg ha-1 yr-1 (95% CI 0.80-2.43 Mg ha-1 yr-1 ). Biomass change varied among habitats, with no significant increase on the slopes (1.05, 95% CI -0.76 to 2.85 Mg ha-1 yr-1 ), a significant increase in the valleys (1.33, 95% CI 0.37-2.34 Mg ha-1 yr-1 ), and a strong increase on the ridges (2.79, 95% CI 1.20-4.21 Mg ha-1 yr-1 ). These results indicate a high carbon resilience of this forest to the 2010 drought due to habitat-associated and interspecific heterogeneity in responses including directional changes in functional composition driven by enhanced performance of drought-tolerant species that inhabit the drier ridges.
Laterality of suckling behaviour in three zebra species

Although side preference while suckling is an easily characterised lateralised behaviour, few studies have been conducted. We observed laterality in suckling behaviour in three captive zebra species to test two hypotheses: laterality affected by the foal (motor laterality) and laterality affected by the mother. In total we observed 35 foals of Grevy's, plains, and mountain zebra in two zoos and recorded 5128 successful suckling bouts and 9095 unsuccessful suckling attempts. At the population level the only factor affecting side preference of suckling bouts and attempts was the identity of the individual foal. Ten foals showed individual preferences: seven foals preferred suckling from the left side of the mother, three preferred suckling from the right side of the mother. The individual preferences increased with increasing age of the foal. Only one foal was refused more often from the opposite side than the preferred side used for suckling whereas three other foals were refused from the preferred side. Foals that preferred suckling either from left or right side were refused by the mare more often than foals which showed non-preference. Thus lateral preferences in suckling behaviour of zebra foals seem to be in line with the motor laterality hypotheses.
Species richness and traits predict overyielding in stem growth in an early-successional tree diversity experiment.

Over the last two decades, empirical work has established that higher biodiversity can lead to greater primary productivity; however, the importance of different aspects of biodiversity in contributing to such relationships is rarely elucidated. We assessed the relative importance of species richness, phylogenetic diversity, functional diversity, and identity of neighbors for stem growth 3 yr after seedling establishment in a tree diversity experiment in eastern Minnesota. Generally, we found that community-weighted means of key functional traits (including mycorrhizal association, leaf nitrogen and calcium, and waterlogging tolerance) as well as species richness were strong, independent predictors of stem biomass growth. More phylogenetically diverse communities did not consistently produce more biomass than expected, and the trait values or diversity of individual functional traits better predicted biomass production than did a multidimensional functional diversity metric. Furthermore, functional traits and species richness best predicted growth at the whole-plot level (12 m2 ), whereas neighborhood composition best predicted growth at the focal tree level (0.25 m2 ). The observed effects of biodiversity on growth appear strongly driven by positive complementary effects rather than by species-specific selection effects, suggesting that synergistic species' interactions rather than the influence of a few important species may drive overyielding.
Working towards men’s health: Findings from the Sefton men’s health project

Objective: To evaluate a health improvement initiative aimed at enhancing the health of men in deprived areas. Design: A healthy lifestyle programme was undertaken with men to increase their health knowledge, and encourage behaviour modification and access to health improvement services. A peer mentoring programme was implemented and a training programme delivered to community and public sector staff. Setting: The programme was delivered in the most deprived wards in Sefton (Liverpool, UK). Method: Qualitative interviews were conducted with men in the lifestyle and peer mentoring programme five months into the programme (n = 6). Further telephone interviews with men took place towards the project’s end (n = 14). Interviews with community staff and health professionals who attended the training were completed (n = 5), fully transcribed and analysed thematically to meet the evaluation aims. Results: The key themes emerging were issues related to influences on participation (including settings and social networks), experiences of participation (including, for men, issues around control and physical activity) and for staff, the opportunity for reflection. Outcomes for men included: changed bio-medical body condition; increased functional capacity; and improved emotional and experiential well-being. Outcomes for staff included: planned change around individual practice; and networking and organizational change. Conclusion: Men liked the convenient settings for the healthy lifestyle programme and its activities, although peer mentoring involves challenges over recruitment and support, and staff also benefited. Men made recommendations for acceptable locations, support for marginalized men, and appropriate incentives.
Prevalence of Treatment Failure among Pulmonary Tuberculosis Patients in Federal Medical Centre, Gombe, Northeastern Nigeria

Treatment failure in patients with pulmonary tuberculosis poses a great danger to the global effort in control of tuberculosis. This study evaluated prevalence of treatment failure among pulmonary tuberculosis patients at Federal Medical Centre (FMC) Gombe, Nigeria. Consecutive patients managed between August 2008 and August 2009 at the Directly Observed Therapy (Tuberculosis) Unit of our hospital were enrolled for the study. Sputum specimens were collected from each patient at entry for Acid Fast Bacilli and repeated at the end of 2nd, 5th and 7th month of treatment. Of the 247 patients recruited, 200 patients consisting of 118 (59%) males and 82 (41%) females aged 15–78 years with a mean of 36.8 ± 12.4 years completed the study. One hundred and fifteen (57.5%) of the patients were sputum smear positive at entry while 85 (42%) were negative. Among 115 smear positive patients at baseline, 80 patients (69.6%), 26 (22.6%) and 24 (20.9%) remained positive after 2nd, 5th and 7th month of treatment respectively. In conclusion, there is a high treatment failure rate (22.6%) among our TB patients; and this poses a great danger to healthcare personnel and close contacts in the community.
POLYGYNANDRY IN THE DUSKY PIPEFISH SYNGNATHUS FLORIDAE REVEALED BY MICROSATELLITE DNA MARKERS

In the dusky pipefish Syngnathus floridae, like other species in the family Syngnathidae, ‘pregnant’ males provide all post‐zygotic care. Male pregnancy has interesting implications for sexual selection theory and the evolution of mating systems. Here, we employ microsatellite markers to describe the genetic mating system of S. floridae, compare the outcome with a previous report of genetic polyandry for the Gulf pipefish S. scovelli, and consider possible associations between the mating system and degree of sexual dimorphism in these species. Twenty‐two pregnant male dusky pipefish from one locale in the northern Gulf of Mexico were analyzed genetically, together with subsamples of 42 embryos from each male's brood pouch. Adult females also were assayed. The genotypes observed in these samples document that cuckoldry by males did not occur; males often receive eggs from multiple females during the course of a pregnancy (six males had one mate each, 13 had two mates, and three had three mates); embryos from different females are segregated spatially within a male's brood pouch; and a female's clutch of eggs often is divided among more than one male. Thus, the genetic mating system of the dusky pipefish is best described as polygynandrous. The genetic results for S. floridae and S. scovelli are consistent with a simple model of sexual selection which predicts that for sex role‐reversed organisms, species with greater degrees of sexual dimorphism are more highly polyandrous.
Impact of Formal Financial Market Participation on Farm Size and Expenditure on Variable Farm Inputs: The Case of Maize Farmers in Ghana

The study examined maize farmers’ participation in the formal financial market and its impact on farm size and expenditure on variable farm inputs. A multistage sampling method was used in selecting 595 maize farmers from the seven districts in Ashanti and Brong Ahafo Regions of Ghana. A structured questionnaire and interview schedule were used to elicit information from the respondents. The impact of formal financial market participation on farm size and expenditure on variable inputs was estimated using Propensity Score Matching (PSM) method. The results of the study showed that formal financial market participation has the potential to significantly increase expenditure on variable inputs by farmers and consequently use of improved technology. Therefore, formal financial market participation should be encouraged through education and promotional activities.
Comparison of Midodrine and Albumin in the Prevention of Paracentesis-induced Circulatory Dysfunction in Cirrhotic Patients: A Randomized Pilot Study

Goals: In this pilot study, we compared midodrine and albumin in the prevention of paracentesis-induced circulatory dysfunction (PICD). Background: PICD with pronounced arterial vasodilatation in cirrhotics with tense ascites can be prevented by the infusion of albumin, which is an expensive treatment modality. Various vasoconstrictors have also been used to prevent PICD, but there are few studies about the usage of midodrine. Study: Fifty patients with cirrhosis and tense refractory ascites were randomly assigned to be treated with either midodrine (n=25) (12.5 mg 3 times/d; over 3 d) or albumin (n=25) (8 g/L of removed ascites) after a large-volume paracentesis. Effective arterial blood volume was assessed indirectly by measuring serum creatinine, serum sodium, plasma renin activity, and aldosterone concentration before and 6 days after paracentesis. Results: Midodrine therapy was cheaper compared with albumin therapy, but serum creatinine, serum sodium, plasma renin activity, and plasma aldosterone concentration values after treatment [0.99±0.19 to 3.02±2.58 mg/dL (P=0.001), 132.36±3.2 to 130.2±4.1 mEq/L (P<0.001), 3.03±0.33 to 4.2±0.76 ng/mL/h (P<0.001), and 166.72±64.26 to 298.64±130 pg/mL (P<0.001), respectively] significantly differed in the midodrine group from that in the albumin group [1.10±0.22 to 1.11±0.161 mg/dL (P=0.885), 132.2±3.524 to 131.88±3.09 mEq/L (P=0.246), 4±0.91 to 4.11±0.74 ng/mL/h (P=0.440), and 204.88±115.9 to 177.08±100.5 pg/mL (P<0.001), respectively]. Seven patients, among whom 6 were hepatocellular carcinoma (HCC) positive, in the midodrine group of our study died as a consequence of liver failure complicated by acute renal failure, followed by hepatic encephalopathy. Whereas in the albumin group, even among the 7 patients with HCC, no patient died or developed hepatorenal syndrome or developed hepatic encephalopathy. Conclusions: This pilot study suggests that midodrine is not as effective as intravenous albumin in preventing circulatory dysfunction after large-volume paracentesis in patients with cirrhosis and tense ascites, especially with HCC-positive patients.
Emotional correlates of unirhinal odour identification

ABSTRACT It seems self-evident that smell profoundly shapes emotion, but less clear is the nature of this interaction. Here, we sought to determine whether the ability to identify odours co-varies with self-reported feelings of empathy and emotional expression recognition, as predicted if the two capacities draw on common resource. Thirty-six neurotypical volunteers were administered the Alberta Smell Test, the Interpersonal Reactivity Index and an emotional expression recognition task. Statistical analyses indicated that feelings of emotional empathy positively correlated with odour discrimination in right nostril, while the recognition of happy and fearful facial expressions positively correlated with odour discrimination in left nostril. These results uncover new links between olfactory discrimination and emotion which, given the ipsilateral configuration of the olfactory projections, point towards intra- rather than inter-hemispheric interaction. The results also provide novel support for the proposed lateralization of emotional empathy and the recognition of facial expression, and give reason to further explore the diagnostic sensitivity of smell tests because reduced sensitivity to others' emotions can mark the onset of certain neurological diseases.
Women’s perceptions of familial aspects of breast cancer

Women’s understanding of familial aspects of breast cancer was examined using both focus groups and interviews. The studies covered issues related to perceptions of breast cancer risk factors, perceived breast cancer risk, understanding of risk information, and family history of breast cancer as a risk factor. Study 1 consisted of four focus group discussions with women from the general community. Study 2 comprised ten face‐to‐face interviews with women who had a family history of breast cancer. The results in combination indicate a fairly high level of awareness of family history as a risk factor for breast cancer. However, the definition of a familial history of breast cancer differed between the groups, with those without a family history being more inclusive than those with such a history. The paper concludes with suggestions for use by those developing resources materials for those with a familial history of breast cancer.
FREQUENCY‐DEPENDENT SELECTION IN A MAMMALIAN RNA VIRUS

RNA viruses have been used as experimental systems to test evolutionary hypotheses such as Muller's ratchet (Chao 1990; Duarte et al. 1992, 1993; Clarke et al. 1993), the Red Queen hypothesis (Clarke et al. 1994), the nature of the adaptive topography (Elena, 1995; Elena et al. 1996), and the dynamics of adaptive evolution (Elena 1995; Novella et al. 1995). Two hypotheses which have received attention in virus studies are the competitive exclusion principle and frequency-dependent selection. The competitive exclusion principle (Hardin 1960) states that two populations or species competing for the same limiting resource cannot stably coexist because one competitor will displace the other. An exception to the competitive exclusion principle can occur under frequency-dependent selection, in which it is possible to find a frequency at which two populations may coexist stably and indefinitely despite the fact that they are competing for the same resource (Ayala and Campbell 1974). Frequency-dependent selection has been demonstrated to occur in organisms as different as Drosophila (Wright and Dobzhansky 1946; Ayala 1971; Kojima 1971; Van Delden et al. 1978) and Escherichia coli (Helling et al. 1987; Chao et al. 1977; Lenski and Hattingh 1986; Turner et al. 1996) among others. Evidence for the applicability of the competitive exclusion principle to viruses has been reported by Clarke et al. (1994) in their work with vesicular stomatitis virus (VSV). These authors observed that two virus populations of approximately equal fitness can coexist during prolonged replication in the same stable environment; but stochastic changes in the population balance did eventually occur, and their impact on the competition was sudden and decisive. They justified their observations by the stochastic fixation of highly advantageous or deleterious mutations in variants of one of the two competing populations. One alternative explanation for the Clarke et al. (1994) observations is the absence of any stable coexistence equilibrium points. The clear and simple objective of the present paper was to determine if frequency-dependent selection acting on viral populations can promote the stable coexistence of two genotypes competing for the same resource.