106 research outputs found
Cattle Egret Bubulcus ibis interactions with large mammals in the Tarangire-Manyara Ecosystem, Northern Tanzania
While Cattle Egrets Bubulcus ibis are globally widespread, their ecology is not fully understood. Surveys of the species were undertaken in November 2012, and April 2013, in Lake Manyara National Park, Manyara Ranch, and outside the two protected areas. We investigated the effects of host identity, habitat type and host animal behaviour on Cattle Egret numbers and distribution. Cattle Egrets associated more with grazers than with mixed-feeders or browsers, and chose large-bodied animals over small-bodied ones. They preferred wetland and grassland, over bushland. These findings underscore the importance of wetland management and the maintenance of healthy grasslands for the future of Cattle Egrets. Declines in large-bodied mammal species are likely to negatively affect them
Recommended from our members
Comparison of brace to observation in stable, radiological developmental dysplasia of the hip: a protocol for a global multicentre non-inferiority randomised trial.
INTRODUCTION: Brace treatment is common to address radiological dysplasia in infants with developmental dysplasia of the hip (DDH); however, it is unclear whether bracing provides significant benefit above careful observation by ultrasound. If observation alone is non-inferior to bracing for radiological dysplasia, unnecessary treatment may be avoided. Therefore, the purpose of this study is to determine whether observation is non-inferior to bracing for infants with radiological dysplasia. METHODS AND ANALYSIS: This will be a multicentre, global, randomised, non-inferiority trial performed under the auspices of a global prospective registry for infants and children diagnosed with DDH. Patients will be included if they present with radiological dysplasia (centred hip, alpha angle 43-60°, percent femoral head coverage greater than 35% measured on ultrasound) of a clinically stable hip under 3 months old. Patients will be excluded if they present with clinical hip instability, have received prior treatment or have known/suspected neuromuscular, collagen, chromosomal or lower-extremity congenital abnormalities or syndromic-associated hip abnormalities. Patients will be enrolled and randomised to undergo observation alone or brace treatment with a Pavlik harness for a minimum of 6 weeks. Follow-up visits will occur at 6 weeks, 1 year and 2 years post-enrolment. The primary outcome will be the norm-referenced acetabular index measured on the 2-year radiograph with a 3° non-inferiority margin. A total of 514 patients will be included.The study is anticipated to start in April 2024 and end in September 2028.The primary outcome will be compared between arms with a mixed-effects model with a random intercept for study centre, and a single covariate for the treatment group. If the lower bound of the 95% CI lies within 3° of the mean, we will treat this as evidence for non-inferiority. ETHICS AND DISSEMINATION: Ethics approval has been obtained from the lead sites ethics board (University of British Columbia, Childrens and Womens Research Ethics Board). Ethics approval will be obtained from the local ethics committees or institutional review boards at each institution prior to patient enrolment. It is intended that the results of this study shall be published in peer-reviewed journals and presented at suitable conferences. TRIAL REGISTRATION NUMBER: NCT05869851
The Grizzly, April 12, 2018
The Distance Between Us : Ursinus Welcomes Mexican-American Author Reyna Grande • Lantern Launch Celebrates All Things Creative About Ursinus • Berman Museum Opens Annual Student Exhibition • International Perspective: Easter Festivities in Prague Recall Student\u27s Childhood Celebrations • Senior Awarded Fulbright Scholarship • Students Present at Celebration of Student Achievement • Summer Looks Bright for Dr. Lori Daggar • Opinions: Ursinus Needs More Science Labs for Humanities Students; Facebook\u27s Data Scandal Reveals Need for Privacy Protection • Men\u27s Lax Maintains Optimism Amid Rocky Season • T&F Impresses in Outdoor Openerhttps://digitalcommons.ursinus.edu/grizzlynews/1644/thumbnail.jp
The Grizzly, November 13, 2008
Berman Expands to Envelop Art and Imagination • Election Night Brings Cheer to Liberal Ursinus College • Changes Expected for This Year\u27s New Member Education • Passage of Prop 8 Leaves Same-Sex Couples Concerned • Days After Election: Obama Gets to Work • Forensics: Not the Science, but the Ursinus Debate Team • Escape Velocity\u27s Eternalmotion Strikes a Chord at UC • Finding the Phillies Parade: An Unforgettable Adventure • History Attached to a Philly Row Home • Opinions: Barack Obama: Our Next President • Kait Sutherland Finishes Out Hockey Reign at Ursinushttps://digitalcommons.ursinus.edu/grizzlynews/1775/thumbnail.jp
A picture of eight turtles: the child’s understanding of cardinality and numerosity
An essential part of understanding number words (e.g., eight) is understanding that all number words refer to the dimension of experience we call numerosity. Knowledge of this general principle may be separable from knowledge of individual number word meanings. That is, children may learn the meanings of at least a few individual number words before realizing that all number words refer to numerosity. Alternatively, knowledge of this general principle may form relatively early and proceed to guide and constrain the acquisition of individual number word meanings. The current article describes two experiments in which 116 children (2½- to 4-year-olds) were given a Word Extension task as well as a standard Give-N task. Results show that only children who understood the cardinality principle of counting successfully extended number words from one set to another based on numerosity—with evidence that a developing understanding of this concept emerges as children approach the cardinality principle induction. These findings support the view that children do not use a broad understanding of number words to initially connect number words to numerosity but rather make this connection around the time that they figure out the cardinality principle of counting
The Grizzly, October 9, 2008
Biden and Palin Hold Their Ground in 2008 Debate • Pimps Up, Ho\u27s Down: Hip-Hop Music and Modern Women • Indian Temple Stampede Kills Hundreds, Injures Others • Hollywood Mourns Legend Paul Newman • Earth Shattering Stock Market Fall Shakes Nation • Spotlight on Sally Rousse: Dance Artistry at its Finest • Ursinus in Tuebingen Students Travel to Berlin, Munich • Introducing the Gender Wage Gap • Opinions: Democratic and Republican Extremes at Ursinus College; Zack\u27s Dining: Why Wait? • Women\u27s Rugby in for Incredible Season • UC Men\u27s Rugby: Sport with Quickly Growing Popularityhttps://digitalcommons.ursinus.edu/grizzlynews/1771/thumbnail.jp
The Grizzly, November 20, 2008
Adding Machine Makes Explosive Debut on UC Campus • Active Minds Encourages Students to Relax: Stop Stressing! • Creative Writing Author John Holman Visits UC Students • Is the Economy Affecting Your Waistline? • More Bailout News: AIG • Inside the Busy Life of Senior Laura Ng • Plummer Speaks About Importance of Election • Ottinger Fights Child Illiteracy in Cold • Play n Trade: New Store for Gamers • Letter to the Editor • Sunny Review • Dracula\u27s Ball Recap: Ideal Halloween Destination • Hockey Prepares for On-Campus Nationals This Weekendhttps://digitalcommons.ursinus.edu/grizzlynews/1776/thumbnail.jp
Broad geographic sampling reveals the shared basis and environmental correlates of seasonal adaptation in Drosophila.
To advance our understanding of adaptation to temporally varying selection pressures, we identified signatures of seasonal adaptation occurring in parallel among Drosophila melanogaster populations. Specifically, we estimated allele frequencies genome-wide from flies sampled early and late in the growing season from 20 widely dispersed populations. We identified parallel seasonal allele frequency shifts across North America and Europe, demonstrating that seasonal adaptation is a general phenomenon of temperate fly populations. Seasonally fluctuating polymorphisms are enriched in large chromosomal inversions, and we find a broad concordance between seasonal and spatial allele frequency change. The direction of allele frequency change at seasonally variable polymorphisms can be predicted by weather conditions in the weeks prior to sampling, linking the environment and the genomic response to selection. Our results suggest that fluctuating selection is an important evolutionary force affecting patterns of genetic variation in Drosophila
Mapping male circumcision for HIV prevention efforts in sub-Saharan Africa
Background
HIV remains the largest cause of disease burden among men and women of reproductive age in sub-Saharan Africa. Voluntary medical male circumcision (VMMC) reduces the risk of female-to-male transmission of HIV by 50–60%. The World Health Organization (WHO) and Joint United Nations Programme on HIV/AIDS (UNAIDS) identified 14 priority countries for VMMC campaigns and set a coverage goal of 80% for men ages 15–49. From 2008 to 2017, over 18 million VMMCs were reported in priority countries. Nonetheless, relatively little is known about local variation in male circumcision (MC) prevalence.
Methods
We analyzed geo-located MC prevalence data from 109 household surveys using a Bayesian geostatistical modeling framework to estimate adult MC prevalence and the number of circumcised and uncircumcised men aged 15–49 in 38 countries in sub-Saharan Africa at a 5 × 5-km resolution and among first administrative level (typically provinces or states) and second administrative level (typically districts or counties) units.
Results
We found striking within-country and between-country variation in MC prevalence; most (12 of 14) priority countries had more than a twofold difference between their first administrative level units with the highest and lowest estimated prevalence in 2017. Although estimated national MC prevalence increased in all priority countries with the onset of VMMC campaigns, seven priority countries contained both subnational areas where estimated MC prevalence increased and areas where estimated MC prevalence decreased after the initiation of VMMC campaigns. In 2017, only three priority countries (Ethiopia, Kenya, and Tanzania) were likely to have reached the MC coverage target of 80% at the national level, and no priority country was likely to have reached this goal in all subnational areas.
Conclusions
Despite MC prevalence increases in all priority countries since the onset of VMMC campaigns in 2008, MC prevalence remains below the 80% coverage target in most subnational areas and is highly variable. These mapped results provide an actionable tool for understanding local needs and informing VMMC interventions for maximum impact in the continued effort towards ending the HIV epidemic in sub-Saharan Africa
Psychological Well-Being of Parents of Very Young Children With Type 1 Diabetes – Baseline Assessment
Background: Type 1 diabetes in young children is a heavy parental burden. As part of
pilot phase of the KIDSAP01 study, we conducted a baseline assessment in parents to
study the association between hypoglycemia fear, parental well-being and child behavior.
Methods: All parents were invited to fill in baseline questionnaires: hypoglycemia fear
survey (HFS), WHO-5, Epworth Sleepiness Scale and Strength and Difficulties
Questionnaire (SDQ).
Results: 24 children (median age: 5-year, range 1-7 years, 63% male, mean diabetes
duration: 3 ± 1.7 years) participated. 23/24 parents filled out the questionnaires. We found
a higher score for the hypoglycemia fear behavior 33.9 ± 5.6 compared to hypoglycemia
worry 34.6 ± 12.2. Median WHO-5 score was 16 (8 - 22) with poor well-being in two
parents. Median daytime sleepiness score was high in five parents (>10). For six children a
high total behavioral difficulty score (>16) was reported. Pro social behavior score was
lower than normal in six children (<6). Parental well-being was negatively associated with
HFS total (r = - 0.50, p <.05) and subscale scores (r = - 0.44, p <.05 for HFS-Worry and
HFS-Behavior), child behavior (r = - 0.45, p = .05) and positively with child age and
diabetes duration (r = 0.58, p <.01, r = 0.6, p <.01). HFS, parental well-being nor daytime
sleepiness are associated with the HbA1c.
Conclusion: Regular screening of parental well-being, hypoglycemia fear and child
behavior should be part of routine care to target early intervention
- …