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https://www.readbyqxmd.com/read/28339755/assessing-the-impact-of-egg-sweating-on-salmonella-enteritidis-penetration-into-shell-eggs
#1
Janet A Gradl, Patricia A Curtis, Deana R Jones, Kenneth E Anderson
Salmonella Enteritidis (SE) prevalence in eggs is a major concern to the egg industry. Some research has shown that egg sweating can increase Salmonella penetration into egg contents when refrigerated eggs are moved to a warmer temperature. This occurs when eggs are tempered before wash, to minimize thermal cracks. The effect of egg sweating on SE penetration into shell eggs over a 6 week storage period at 4 C was assessed. A 2 × 2 factorial of SE inoculation and egg sweating was utilized. Treatments included (SES) nalidixic acid (NA)-resistant SE inoculated and sweated, (SENS) NA-resistant SE inoculated and not sweated, (NSES) buffered peptone water (BPW) inoculated and sweated, and (NSENS) BPW inoculated and not sweated...
February 23, 2017: Poultry Science
https://www.readbyqxmd.com/read/28339543/climatic-factors-and-prevalence-of-campylobacter-in-commercial-broiler-flocks-in-thailand
#2
S Prachantasena, P Charununtakorn, S Muangnoicharoen, L Hankla, N Techawal, P Chaveerach, P Tuitemwong, N Chokesajjawatee, N Williams, T Humphrey, T Luangtongkum
Campylobacter are bacteria associated with human foodborne disease worldwide. Poultry and poultry products are generally considered as a main source of these organisms. Compared to temperate zones, baseline information on Campylobacter in tropical regions is limited. Thus, the objectives of the present study were 1) to determine the prevalence of Campylobacter in Thai broiler flocks and 2) to investigate the association between climatic factors (i.e., rainfall, ambient temperature, and relative humidity) and Campylobacter colonization status of broiler flocks in Thailand...
October 6, 2016: Poultry Science
https://www.readbyqxmd.com/read/28334323/interspecific-competition-between-ceratitis-capitata-and-two-bactrocera-spp-diptera-tephritidae-evaluated-via-adult-behavioral-interference-under-laboratory-conditions
#3
Hui Liu, Can Zhang, Bo-Hua Hou, Ge-Cheng Ou-Yang, Jun Ma
The Mediterranean fruit fly, Ceratitis capitata (Wiedemann), is considered one of the most invasive tephritid species. It has spread and established populations successfully throughout many of the tropical temperate regions, partially owing to the increase in global trading activity that facilitates diffusion of species. However, C. capitata has never been detected in China, even though some areas of the country have favorable climate and ample food resources. Historically, some researchers have hypothesized that the principal reasons for its absence are the defenses mounted by native Bactrocera species against C...
March 15, 2017: Journal of Economic Entomology
https://www.readbyqxmd.com/read/28334322/evaluation-of-food-lures-for-capture-and-monitoring-of-anastrepha-fraterculus-diptera-tephritidae-on-temperate-fruit-trees
#4
J M da Rosa, C J Arioli, J P Dos Santos, A C Menezes-Netto, M Botton
The Anastrepha fraterculus (Wiedemann) (Diptera: Tephritidae) is the main pest of fruit trees grown in temperate climates in the southern region of Brazil. The objective of this work was to evaluate the efficiency of the major commercial food lures used in Brazil for trapping and monitoring of A. fraterculus in plum, pear, and feijoa orchards. The assessed lures were hydrolyzed proteins of animal origin (CeraTrap) and plant origin (BioAnastrepha), torula yeast + borax (Torula), and grape juice. Response variables included the rate of adult capture (flies per trap per day, FTD) and the percentage of females captured...
March 16, 2017: Journal of Economic Entomology
https://www.readbyqxmd.com/read/28334274/interactive-effects-of-multiple-climate-change-factors-on-ammonia-oxidizers-and-denitrifiers-in-a-temperate-steppe
#5
Cuijing Zhang, Jupei Shen, Yifei Sun, Juntao Wang, Limei Zhang, Zhongling Yang, Hongyan Han, Shiqiang Wan, Jizheng He
Global climate change could have profound effects on belowground microbial communities and subsequently affect soil biogeochemical processes. The interactive effects of multiple co-occurring climate change factors on microbially-mediated processes are not well understood. A four-factorial field experiment with elevated CO2, watering, nitrogen (N) addition and night warming was conducted in a temperate steppe of northern China. Real-time polymerase chain reaction and terminal-restriction fragment length polymorphism, combined with clone library techniques were applied to examine the effects of those climate change factors on N-related microbial abundance and community composition...
March 15, 2017: FEMS Microbiology Ecology
https://www.readbyqxmd.com/read/28334191/tu-et-al-microbial-diversity-in-chinese-temperate-steppe-unveiling-the-most-influential-environmental-drivers
#6
Bo Tu, Xavier Domene, Minjie Yao, Chaonan Li, Shiheng Zhang, Yongping Kou, Yansu Wang, Xiangzhen Li
Temperate steppe is extremely sensitive to the current global changes. However, what are the main environmental variables driving microbial diversity in temperate steppe are still unclear, something that impairs doing predictions about the expected effects of global changes on microbe-mediated ecological functions. This is why, in this study, the relationship between soil microbial diversity and environmental variables in Chinese temperate steppe is investigated. In this study, significant correlations between soil bacterial α-diversity and mean annual precipitation (MAP) and the aridity index (AI) were observed at the whole region scale...
March 7, 2017: FEMS Microbiology Ecology
https://www.readbyqxmd.com/read/28334161/elevated-co2-and-warming-effects-on-grassland-plant-mortality-are-determined-by-the-timing-of-rainfall
#7
Mark J Hovenden, Paul C D Newton, Meagan Porter
Background and aims: Global warming is expected to increase the mortality rate of established plants in water-limited systems because of its effect on evapotranspiration. The rising CO 2 concentration ([CO 2 ]), however, should have the opposite effect because it reduces plant transpiration, delaying the onset of drought. This potential for elevated [CO 2 ] (eCO 2 ) to modify the warming effect on mortality should be related to prevailing moisture conditions. This study aimed to determine the impacts of warming by 2 °C and eCO 2 (550 μmol mol -1 ) on plant mortality in an Australian temperate grassland over a 6-year period and to test how interannual variation in rainfall influenced treatment effects...
February 28, 2017: Annals of Botany
https://www.readbyqxmd.com/read/28333994/chronic-environmental-stress-enhances-tolerance-to-seasonal-gradual-warming-in-marine-mussels
#8
Ionan Marigómez, Maria Múgica, Urtzi Izagirre, Inna M Sokolova
In global climate change scenarios, seawater warming acts in concert with multiple stress sources, which may enhance the susceptibility of marine biota to thermal stress. Here, the responsiveness to seasonal gradual warming was investigated in temperate mussels from a chronically stressed population in comparison with a healthy one. Stressed and healthy mussels were subjected to gradual temperature elevation for 8 days (1°C per day; fall: 16-24°C, winter: 12-20°C, summer: 20-28°C) and kept at elevated temperature for 3 weeks...
2017: PloS One
https://www.readbyqxmd.com/read/28332774/changing-hpv-vaccination-rates-in-bisexual-and-lesbian-women
#9
Carolee Polek, Thomas Hardie
BACKGROUND: Human papillomavirus (HPV) vaccination rates continue to be below national targets for women and lower in some sexual minorities. HPV is a primary causal agent in cervical cancer, from which members of the lesbian and bisexual community mistakenly believe they are at low risk. This study characterized rates of HPV vaccination in women based on their sexual orientation. METHODS: Data were obtained from the Centers for Disease Control and Prevention's National Health Interview Survey 2013-2014...
March 23, 2017: Journal of the American Association of Nurse Practitioners
https://www.readbyqxmd.com/read/28332647/prevalence-of-honeybee-viruses-in-different-regions-of-china-and-argentina
#10
G Ding, N Fondevila, M A Palacio, J Merke, A Martinez, B Camacho, A Aignasse, E Figini, G Rodriguez, L Lv, Z Liu, W Shi
Honeybees are threatened by various pathogens and parasites. More than 18 viruses have been described in honeybees and many of them have been detected in China and Argentina. In China, both Apis cerana and Apis mellifera are raised. In Argentina, beekeepers raise different ecotypes of A. mellifera: European honeybees (in both temperate and subtropical regions) and Africanised honeybees (in subtropical areas only). A thorough study was carried out in both China and Argentina to analyse the current virus presence and distribution in different climatic zones and gather information on different bee species/subspecies...
December 2016: Revue Scientifique et Technique
https://www.readbyqxmd.com/read/28332574/natural-variation-in-ctb4a-enhances-rice-adaptation-to-cold-habitats
#11
Zhanying Zhang, Jinjie Li, Yinghua Pan, Jilong Li, Lei Zhou, Hongli Shi, Yawen Zeng, Haifeng Guo, Shuming Yang, Weiwei Zheng, Jianping Yu, Xingming Sun, Gangling Li, Yanglin Ding, Liang Ma, Shiquan Shen, Luyuan Dai, Hongliang Zhang, Shuhua Yang, Yan Guo, Zichao Li
Low temperature is a major factor limiting rice productivity and geographical distribution. Improved cold tolerance and expanded cultivation to high-altitude or high-latitude regions would help meet growing rice demand. Here we explored a QTL for cold tolerance and cloned the gene, CTB4a (cold tolerance at booting stage), encoding a conserved leucine-rich repeat receptor-like kinase. We show that different CTB4a alleles confer distinct levels of cold tolerance and selection for variation in the CTB4a promoter region has occurred on the basis of environmental temperature...
March 23, 2017: Nature Communications
https://www.readbyqxmd.com/read/28331599/species-distribution-modeling-and-molecular-markers-suggest-longitudinal-range-shifts-and-cryptic-northern-refugia-of-the-typical-calcareous-grassland-species-hippocrepis-comosa-horseshoe-vetch
#12
Martin Leipold, Simone Tausch, Peter Poschlod, Christoph Reisch
Calcareous grasslands belong to the most diverse, endangered habitats in Europe, but there is still insufficient information about the origin of the plant species related to these grasslands. In order to illuminate this question, we chose for our study the representative grassland species Hippocrepis comosa (Horseshoe vetch). Based on species distribution modeling and molecular markers, we identified the glacial refugia and the postglacial migration routes of the species to Central Europe. We clearly demonstrate that H...
March 2017: Ecology and Evolution
https://www.readbyqxmd.com/read/28331385/annotated-checklist-of-fish-cestodes-from-south-america
#13
Philippe V Alves, Alain de Chambrier, Tomáš Scholz, José L Luque
An exhaustive literature search supplemented by a critical examination of records made it possible to present an annotated checklist of tapeworms (Cestoda) that, as adults or larvae (metacestodes), parasitize freshwater, brackish water and marine fishes, i.e. cartilaginous and bony fishes, in South America. The current knowledge of their species diversity, host associations and geographical distribution is reviewed. Taxonomic problems are discussed based on a critical evaluation of the literature and information on DNA sequences of individual taxa is provided to facilitate future taxonomic and phylogenetic studies...
2017: ZooKeys
https://www.readbyqxmd.com/read/28330260/impact-of-forest-vegetation-on-soil-characteristics-a-correlation-between-soil-biological-and-physico-chemical-properties
#14
L R Chandra, S Gupta, V Pande, N Singh
Temperate and dry deciduous forest covers major portion of terrestrial ecosystem in India. The two forest types with different dominant tree species differ in litter quality and root exudates, thereby exerting species-specific impact on soil properties and microbial activity. This study aims to examine the influence of forest type or dominant tree species on soil physico-chemical properties and its relationship with microbial characters in temperate and dry deciduous forest types. We assessed soil physico-chemical properties among five different sites located within the selected forest stand covered by different dominant species...
December 2016: 3 Biotech
https://www.readbyqxmd.com/read/28330093/exploration-of-nifh-gene-through-soil-metagenomes-of-the-western-indian-himalayas
#15
Ravindra Soni, Deep Chandra Suyal, Santosh Sai, Reeta Goel
This group has previously highlighted the prevalence of Csp genes from cold Himalayan environments. However, this study has explored the uncultured diazotrophs from metagenomes of western Indian Himalayas. The metagenomic nifH gene clone library was constructed from the Temperate, Subtropical and Tarai soils of Western Himalaya, India followed by polymerase chain reaction (PCR) amplification. After preliminary screening, selected clones were sequenced. In silico analysis of the clones was done, which documented 83...
June 2016: 3 Biotech
https://www.readbyqxmd.com/read/28326095/potential-of-legume-brassica-intercrops-for-forage-production-and-green-manure-encouragements-from-a-temperate-southeast-european-environment
#16
REVIEW
Ana M Jeromela, Aleksandar M Mikić, Svetlana Vujić, Branko Ćupina, Đorđe Krstić, Aleksandra Dimitrijević, Sanja Vasiljević, Vojislav Mihailović, Sandra Cvejić, Dragana Miladinović
Legumes and brassicas have much in common: importance in agricultural history, rich biodiversity, numerous forms of use, high adaptability to diverse farming designs, and various non-food applications. Rare available resources demonstrate intercropping legumes and brassicas as beneficial to both, especially for the latter, profiting from better nitrogen nutrition. Our team aimed at designing a scheme of the intercrops of autumn- and spring-sown annual legumes with brassicas for ruminant feeding and green manure, and has carried out a set of field trials in a temperate Southeast European environment and during the past decade, aimed at assessing their potential for yields of forage dry matter and aboveground biomass nitrogen and their economic reliability via land equivalent ratio...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28325831/landscape-genomic-insights-into-the-historic-migration-of-mountain-hemlock-in-response-to-holocene-climate-change
#17
Jeremy S Johnson, Keith D Gaddis, David M Cairns, Kranti Konganti, Konstantin V Krutovsky
PREMISE OF THE STUDY: Untangling alternative historic dispersal pathways in long-lived tree species is critical to better understand how temperate tree species may respond to climatic change. However, disentangling these alternative pathways is often difficult. Emerging genomic technologies and landscape genetics techniques improve our ability to assess these pathways in natural systems. We address the question to what degree have microrefugial patches and long-distance dispersal been responsible for the colonization of mountain hemlock (Tsuga mertensiana) on the Alaskan Kenai Peninsula...
March 21, 2017: American Journal of Botany
https://www.readbyqxmd.com/read/28324740/evolution-fruit-fly-clocks-on-the-edge
#18
Charalambos P Kyriacou
Fruit flies evolved in tropical regions under stable light-dark cycles. However, their photosensitive circadian clock had to adapt to extreme seasonal photoperiods during their colonisation of temperate regions. This was achieved by changing the neuronal expression of two key clock-related components.
March 20, 2017: Current Biology: CB
https://www.readbyqxmd.com/read/28324187/frontal-burr-hole-approach-for-neuroendoscopic-resection-of-craniopharyngioma-with-the-nico-myriad-device-report-of-two-cases
#19
Reilin J Moore, Andrea Scherer, Daniel H Fulkerson
OBJECTIVE: Craniopharyngiomas are challenging tumors to resect due to their deep location and proximity to vital structures. The perceived benefit of gross total resection may be tempered by the possibility of permanent disability. Minimally invasive techniques may reduce surgical morbidity while still allowing effective resection. The authors describe their initial experience with a neuroendoscopic transcortical, transventricular approach to two craniopharyngiomas. The surgeries were performed through a right frontal burr hole using the NICO Myriad, a side-cutting, aspiration device that fits through the working channel of a standard neuroendoscope...
March 21, 2017: Child's Nervous System: ChNS: Official Journal of the International Society for Pediatric Neurosurgery
https://www.readbyqxmd.com/read/28323903/global-potential-distribution-of-drosophila-suzukii-diptera-drosophilidae
#20
Luana A Dos Santos, Mayara F Mendes, Alexandra P Krüger, Monica L Blauth, Marco S Gottschalk, Flávio R M Garcia
Drosophila suzukii (Matsumura) is a species native to Western Asia that is able to pierce intact fruit during egg laying, causing it to be considered a fruit crop pest in many countries. Drosophila suzukii have a rapid expansion worldwide; occurrences were recorded in North America and Europe in 2008, and South America in 2013. Due to this rapid expansion, we modeled the potential distribution of this species using the Maximum Entropy Modeling (MaxEnt) algorithm and the Genetic Algorithm for Ruleset Production (GARP) using 407 sites with known occurrences worldwide and 11 predictor variables...
2017: PloS One
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