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https://www.readbyqxmd.com/read/28734054/population-demography-and-heterozygosity-fitness-correlations-in-natural-guppy-populations-an-examination-using-sexually-selected-fitness-traits
#1
Catherine E Grueber, John L Fitzpatrick, Alessandro Devigili, Clelia Gasparini, Indar W Ramnarine, Jonathan P Evans
Heterozygosity-fitness correlations (HFCs) have been examined in a wide diversity of contexts, and the results are often used to infer the role of inbreeding in natural populations. Although population demography, reflected in population-level genetic parameters such as allelic diversity or identity disequilibrium, is expected to play a role in the emergence and detectability of HFCs, direct comparisons of variation in HFCs across many populations of the same species, with different genetic histories, are rare...
July 22, 2017: Molecular Ecology
https://www.readbyqxmd.com/read/28731825/convergent-phenotypic-evolution-despite-contrasting-demographic-histories-in-the-fauna-of-white-sands
#2
Erica Bree Rosenblum, Christine E Parent, Eveline T Diepeveen, Clay Noss, Ke Bi
When are evolutionary outcomes predictable? Cases of convergent evolution can shed light on when, why, and how different species exhibit shared evolutionary trajectories. In particular, studying diverse species in a common environment can illuminate how different factors facilitate or constrain adaptive evolution. Here we integrate studies of pattern and process in the fauna at White Sands (New Mexico) to understand the determinants of convergent evolution. Numerous animal species at White Sands exhibit phenotypic convergence in response to a novel-and shared-selective environment: geologically young gypsum dunes...
August 2017: American Naturalist
https://www.readbyqxmd.com/read/28731541/demography-and-genome-divergence-of-lake-and-stream-populations-of-an-east-african-cichlid-fish
#3
Bernd Egger, Marius Rösti, Astrid Böhne, Olivia Roth, Walter Salzburger
Disentangling the processes and mechanisms underlying divergent selection in diversification is facilitated by the comparative study of replicate population pairs that have diverged along a similar environmental gradient. Such a setting is realized in a cichlid fish from southern Lake Tanganyika, Astatotilapia burtoni, which occurs both within the lake proper as well as in various affluent rivers. Previous studies demonstrated that independent lake and stream populations show respectively similar adaptations to the two habitat regimes...
July 21, 2017: Molecular Ecology
https://www.readbyqxmd.com/read/28731209/evaluating-atypical-features-of-femur-fractures-how-change-in-radiological-criteria-influenced-incidence-and-demography-of-atypical-femur-fractures-in-a-community-setting
#4
Erin S LeBlanc, A Gabriela Rosales, Dennis M Black, Harry K Genant, Richard M Dell, Darin M Friess, David L Boardman, Douglas C Bauer, Anne de Papp, Arthur C Santora, Eric S Orwoll
Identification of atypical femoral fractures (AFFs) can be challenging. To assist in the radiological assessment, an ASBMR Task Force developed a case definition for AFFs in 2010, revising it in 2013. How the revised definition performs in a community setting compared to the 2010 definition is unknown. We applied the 2013 criteria to 372 femoral fractures that occurred between January 1, 1996, and June 30, 2009, employing two independent expert physician reviewers. We used radiographs that had been categorized in a previous study on the incidence of atypical fractures using 2010 ASMBR criteria (BEAK1)...
July 21, 2017: Journal of Bone and Mineral Research: the Official Journal of the American Society for Bone and Mineral Research
https://www.readbyqxmd.com/read/28729670/forest-edge-disturbance-increases-rattan-abundance-in-tropical-rain-forest-fragments
#5
Mason J Campbell, Will Edwards, Ainhoa Magrach, Susan G Laurance, Mohammed Alamgir, Gabriel Porolak, William F Laurance
Human-induced forest fragmentation poses one of the largest threats to global diversity yet its impact on rattans (climbing palms) has remained virtually unexplored. Rattan is arguably the world's most valuable non-timber forest product though current levels of harvesting and land-use change place wild populations at risk. To assess rattan response to fragmentation exclusive of harvesting impacts we examined rattan abundance, demography and ecology within the forests of northeastern, Australia. We assessed the community abundance of rattans, and component adult (>3 m) and juvenile (≤3 m) abundance in five intact forests and five fragments (23-58 ha) to determine their response to a range of environmental and ecological parameters...
July 20, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28727473/delay-in-initiation-of-treatment-after-diagnosis-of-pulmonary-tuberculosis-in-primary-health-care-setting-eight-year-cohort-analysis-from-district-faridabad-haryana-north-india
#6
Shashi Kant, Arvind K Singh, Giridara G Parmeshwaran, Partha Haldar, Sumit Malhotra, Ravneet Kaur
INTRODUCTION: Delay in initiation of tuberculosis (TB) treatment may have a tremendous impact on disease transmission, development of drug resistance, poor outcome and overall survival of TB patients. The delay can occur at various levels. Delay in initiation of treatment after diagnosis is mostly due to health system failure and has immense programmatic implications. It has not been studied extensively in the Indian setting. METHODS: The authors did a cohort analysis of all TB patients initiated on treatment from two primary health centres (PHCs) at Ballabgarh Health and Demographic Surveillance System between January 2007 and December 2014...
July 2017: Rural and Remote Health
https://www.readbyqxmd.com/read/28726467/the-importance-of-the-neighborhood-in-the-2014-ebola-outbreak-in-the-united-states-distress-worry-and-functioning
#7
Rupa Jose, E Alison Holman, Roxane Cohen Silver
OBJECTIVE: Ebola media coverage directed public attention to potential disease carriers: residents or travelers from West Africa. We investigated the role of neighborhood population factors (i.e., the concentration of West African foreigners, non-West African foreigners, non-Hispanic Blacks) on individual responses to the Ebola outbreak in the United States. The role of these community-level factors in emotional responses to this public health crisis is poorly understood. METHOD: Demographic factors, mental health, and stressful event history, collected as part of an ongoing longitudinal study of residents from 2 metropolitan communities (New York City and Boston, total N = 1,346), were combined with neighborhood data from the U...
July 20, 2017: Health Psychology: Official Journal of the Division of Health Psychology, American Psychological Association
https://www.readbyqxmd.com/read/28726288/hot-dogs-high-ambient-temperatures-impact-reproductive-success-in-a-tropical-carnivore
#8
Rosie Woodroffe, Rosemary Groom, J Weldon McNutt
Climate change imposes an urgent need to recognise and conserve the species likely to be worst affected. However, while ecologists have mostly explored indirect effects of rising ambient temperatures on temperate and polar species, physiologists have predicted direct impacts on tropical species. The African wild dog (Lycaon pictus), a tropical species, exhibits few of the traits typically used to predict climate change vulnerability. Nevertheless, we predicted that wild dog populations might be sensitive to weather conditions, because the species shows strongly seasonal reproduction across most of its geographical range...
July 19, 2017: Journal of Animal Ecology
https://www.readbyqxmd.com/read/28725435/biogeophysical-and-physiological-processes-drive-movement-patterns-in-a-marine-predator
#9
Lucy A Howey, Bradley M Wetherbee, Emily R Tolentino, Mahmood S Shivji
BACKGROUND: Blue sharks (Prionace glauca) are among the most abundant and widely distributed of oceanic elasmobranchs. Millions are taken annually in pelagic longline fisheries and comprise the highest component of auctioned fin weight in the international shark fin trade. Though studies of blue sharks outnumber those of other large pelagic sharks, the species' complicated and sexually segregated life history still confound current understanding of Atlantic movement patterns. Lack of detailed information regarding movement and vertical behavior continues to limit management efforts that require such data for stock assessment and sustainable catch modeling...
2017: Movement Ecology
https://www.readbyqxmd.com/read/28725414/snps-across-time-and-space-population-genomic-signatures-of-founder-events-and-epizootics-in-the-house-finch-haemorhous-mexicanus
#10
Allison J Shultz, Allan J Baker, Geoffrey E Hill, Paul M Nolan, Scott V Edwards
Identifying genomic signatures of natural selection can be challenging against a background of demographic changes such as bottlenecks and population expansions. Here, we disentangle the effects of demography from selection in the House Finch (Haemorhous mexicanus) using samples collected before and after a pathogen-induced selection event. Using ddRADseq, we genotyped over 18,000 SNPs across the genome in native pre-epizootic western US birds, introduced birds from Hawaii and the eastern United States, post-epizootic eastern birds, and western birds sampled across a similar time span...
October 2016: Ecology and Evolution
https://www.readbyqxmd.com/read/28725390/grazed-wet-meadows-are-sink-habitats-for-the-southern-dunlin-calidris-alpina-schinzii-due-to-nest-trampling-by-cattle
#11
Veli-Matti Pakanen, Sami Aikio, Aappo Luukkonen, Kari Koivula
The effect of habitat management is commonly evaluated by measuring population growth, which does not distinguish changes in reproductive success from changes in survival or the effects of immigration or emigration. Management has rarely been evaluated considering complete life cycle of the target organisms, including also possible negative impacts from management. We evaluated the effectiveness of cattle grazing in the restoration of coastal meadows as a breeding habitat for small and medium-sized ground-nesting birds by examining the size and demography of a southern dunlin (Calidris alpina schinzii) breeding population...
October 2016: Ecology and Evolution
https://www.readbyqxmd.com/read/28725385/do-movement-behaviors-identify-reproductive-habitat-sampling-for-wild-turkeys
#12
Mason D Conley, Nathan A Yeldell, Michael J Chamberlain, Bret A Collier
Selection of habitats has regularly been suggested to influence species demography at both local and broad scales. The expectation is that selection behaviors have positive benefits via greater fitness or increased survival. The current paradigm of habitat selection theory suggests a hierarchical process, where an individual first selects where they choose to live (e.g., range) and then searches and selects locations within this range meeting life history needs. Using high-frequency GPS data collected from reproductively active Rio Grande (n = 21) and Eastern (n = 23) wild turkeys, we evaluated a long-standing theory for ground-nesting galliformes, in that movements during the prenesting period are behaviorally focused on sampling available habitats to optimize the selection of nesting sites...
October 2016: Ecology and Evolution
https://www.readbyqxmd.com/read/28721147/the-importance-of-two-metabolic-syndrome-diagnostic-criteria-and-body-fat-distribution-in-predicting-clinical-severity-and-prognosis-of-acute-myocardial-infarction
#13
Marko Mornar Jelavic, Zdravko Babic, Hrvoje Pintaric
INTRODUCTION: The interrelation between metabolic syndrome (MetS) (the revised National Cholesterol Education Program-Adult Treatment Panel III (NCEP-ATP III) and International Diabetes Federation (IDF)) and obesity indices in predicting clinical severity and prognosis of acute ST-elevation myocardial infarction (STEMI) is insufficiently known. MATERIAL AND METHODS: This prospective study included 250 acute STEMI patients treated with primary percutaneous coronary intervention...
June 2017: Archives of Medical Science: AMS
https://www.readbyqxmd.com/read/28719774/a-secular-trend-in-birth-weight-and-delivery-practices-in-periurban-vietnam-during-2005-2012
#14
Duc Minh Duong, Anh Duy Nguyen, Chuong Canh Nguyen, Vui Thi Le, Son Ngoc Hoang, Ha Thi Thu Bui
The remarkable increase in Vietnamese economic conditions can increase the birth weight in neonates and better delivery practices among women. The Chi Linh Health and Demographic Surveillance System started in 2004. An open cohort of data consisting of about 57 561 people from 17 993 households has been followed primarily with respect to demography, economy, and education. The aim of this research is to study secular trends in delivery practice and birth weight in the past decade (2005-2012) in Chi Linh...
July 2017: Asia-Pacific Journal of Public Health
https://www.readbyqxmd.com/read/28719642/infections-with-schistosoma-mansoni-and-geohelminths-among-school-children-dwelling-along-the-shore-of-the-lake-hawassa-southern-ethiopia
#15
Bamlaku Tadege, Techalew Shimelis
BACKGROUND: Infections with Schistosoma mansoni and soil-transmitted helminthes (STHs) are major public health problems in Ethiopia. However, information was scarce on the current status of these infections to guide an intervention in the study area. Therefore, this study was conducted to assess the prevalence of infections with S. mansoni and STHs and associated factors among school children in southern Ethiopia. METHODS: This cross-sectional study investigated children who were attending the Finchawa and Tullo junior elementary schools and were residing along the shore of the lake Hawassa in January and February, 2015...
2017: PloS One
https://www.readbyqxmd.com/read/28715914/leprosy-in-a-lombard-avar-cemetery-in-central-italy-campochiaro-molise-6th-8th-century-ad-ancient-dna-evidence-and-demography
#16
Mauro Rubini, Paola Zaio, Mark Spigelman, Helen D Donoghue
BACKGROUND: The study of past infectious diseases increases knowledge of the presence, impact and spread of pathogens within ancient populations. AIM: Polymerase chain reaction (PCR) was used to examine bones for the presence of Mycobacterium leprae ancient DNA (aDNA) as, even when leprosy is present, bony changes are not always pathognomonic of the disease. This study also examined the demographic profile of this population and compared it with two other populations to investigate any changes in mortality trends between different infectious diseases and between the pre-antibiotic and antibiotic eras...
July 17, 2017: Annals of Human Biology
https://www.readbyqxmd.com/read/28713419/population-structure-genetic-diversity-and-evolutionary-history-of-kleinia-neriifolia-asteraceae-on-the-canary-islands
#17
Ye Sun, Carlos F Vargas-Mendoza
Kleinia neriifolia Haw. is an endemic species on the Canarian archipelago, this species is widespread in the coastal thicket of all the Canarian islands. In the present study, genetic diversity and population structure of K. neriifolia were investigated using chloroplast gene sequences and nuclear SSR (simple sequence repeat). The differentiation among island populations, the historical demography, and the underlying evolutionary scenarios of this species are further tested based on the genetic data. Chloroplast diversity reveals a strong genetic divergence between eastern islands (Gran Canaria, Fuerteventura, and Lanzarote) and western islands (EI Hierro, La Palma, La Gomera, Tenerife), this west-east genetic divergence may reflect a very beginning of speciation...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28702270/prevalence-and-risk-factors-of-mortality-among-adult-hiv-patients-initiating-art-in-rural-setting-of-hiv-care-and-treatment-services-in-north-western-tanzania-a-retrospective-cohort-study
#18
Daniel Wilfred Gunda, Igembe Nkandala, Semvua Bukheti Kilonzo, Boniface Bartholomew Kilangi, Bonaventura Cornel Mpondo
INTRODUCTION: HIV still causes high mortality despite use of ART. This study was designed to determine the prevalence and risk factors of mortality among HIV patients receiving ART in northwestern rural Tanzania. METHODS: A retrospective study of HIV patients on ART was done at Sengerema in Mwanza, Tanzania. The data on demography, date of HIV diagnosis, WHO stage, opportunistic infections, CD4, hemoglobin, ART regimen, and time and outcome on treatment as dead or alive were collected and analyzed using STATA version 11...
2017: Journal of Sexually Transmitted Diseases
https://www.readbyqxmd.com/read/28701562/nutritional-state-reveals-complex-consequences-of-risk-in-a-wild-predator-prey-community
#19
Philip D DeWitt, Matthew S Schuler, Darcy R Visscher, Richard P Thiel
Animal populations are regulated by the combined effects of top-down, bottom-up and abiotic processes. Ecologists have struggled to isolate these mechanisms because their effects on prey behaviour, nutrition, security and fitness are often interrelated. We monitored how forage, non-consumptive effects (NCEs), consumptive predation and climatic conditions influenced the demography and nutritional state of a wild prey population during predator recolonization. Combined measures of nutrition, survival and population growth reveal that predators imposed strong effects on the prey population through interacting non-consumptive and consumptive effects, and forage mechanisms...
July 12, 2017: Proceedings. Biological Sciences
https://www.readbyqxmd.com/read/28697620/is-it-just-religious-practice-exploring-patients-reasons-for-choosing-a-faith-based-primary-health-clinic-over-their-local-public-sector-primary-health-clinic
#20
James D Porter, Graham Bresick
BACKGROUND: Person-centred, re-engineered primary health care (PHC) is a national and global priority. Faith-based health care is a significant provider of PHC in sub-Saharan Africa, but there is limited published data on the reasons for patient choice of faith-based health care, particularly in South Africa. AIM: The primary objective was to determine and explore the reasons for patient choice of a faith-based primary care clinic over their local public sector primary care clinic, and secondarily to determine to what extent these reasons were influenced by demography...
June 29, 2017: African Journal of Primary Health Care & Family Medicine
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