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https://www.readbyqxmd.com/read/28929202/intestinal-microbiota-of-white-shrimp-penaeus-vannamei-under-intensive-cultivation-conditions-in-ecuador
#1
Oreste Gainza, Carolina Ramírez, Alfredo Salinas Ramos, Jaime Romero
The goal of the study was to characterize the intestinal tract bacterial microbiota composition of Penaeus vannamei in intensive commercial ponds in Ecuador, comparing two shrimp-farming phases: nursery and harvest. Bacterial microbiota was examined by sequencing amplicons V2-V3 of the 16S rRNA using Ion Torrent technology. Archaea sequences were detected in both phases. Sequence analyses revealed quantitative and qualitative differences between the nursery phase and the harvest phase in shrimp intestinal microbiota composition...
September 20, 2017: Microbial Ecology
https://www.readbyqxmd.com/read/28921572/production-level-risk-factors-for-syncytial-hepatitis-in-farmed-tilapia-oreochromis-niloticus-l
#2
R M Kabuusu, A T Aire, D F Stroup, C N L Macpherson, H W Ferguson
Syncytial hepatitis (SHT) is an emerging viral disease of tilapia characterized by significant morbidity and mortality. This study aimed to establish the production-level risk factors associated with presence and severity of SHT. Production factors were analysed during multiple outbreaks of SHT that occurred between 2011 and 2013 on a single tilapia farm in Ecuador and compared with the year 2010 before the SHT outbreaks. Relative risks, t tests, modified Poisson and forward stepwise linear regression analyses were performed using EPIINFO™...
September 17, 2017: Journal of Fish Diseases
https://www.readbyqxmd.com/read/28919961/the-mugil-curema-species-complex-pisces-mugilidae-a-new-karyotype-for-the-pacific-white-mullet-mitochondrial-lineage
#3
Mauro Nirchio, Claudio Oliveira, Zoila R Siccha-Ramirez, Viviani F de Sene, Luciana Sola, Valentina Milana, Anna Rita Rossi
Recent molecular phylogenetic analyses have shown that the Mugil curema Valenciennes, 1836 species complex includes M. incilis Hancock, 1830, M. thoburni (Jordan & Starks, 1896) and at least four "M. curema" mitochondrial lineages, considered as cryptic species. The cytogenetic data on some representatives of the species complex have shown a high cytogenetic diversity. This research reports the results of cytogenetic and molecular analyses of white mullet collected in Ecuador. The analyzed specimens were molecularly assigned to the Mugil sp...
2017: Comparative Cytogenetics
https://www.readbyqxmd.com/read/28915986/exploration-of-gender-norms-and-socialization-among-early-adolescents-the-use-of-qualitative-methods-for-the-global-early-adolescent-study
#4
REVIEW
Kristin Mmari, Robert W Blum, Rebkha Atnafou, Elisa Chilet, Sara de Meyer, Omaima El-Gibaly, Sharmista Basu, Bamidele Bello, Beatrice Maina, Xiayun Zuo
PURPOSE: The Global Early Adolescent Study (GEAS) was launched in 2014 with the primary goal of understanding the factors in early adolescence that predispose young people to subsequent sexual risks, and conversely, those that promote healthy sexuality across different cultural contexts. The present article describes the methodology that was used for the first phase of GEAS, which consisted of conducting qualitative research to understand the gendered transitions into adolescence and the role that gender norms play within the key relationships of adolescents...
October 2017: Journal of Adolescent Health: Official Publication of the Society for Adolescent Medicine
https://www.readbyqxmd.com/read/28914801/gender-differences-in-problematic-alcohol-consumption-in-university-professors
#5
Pablo Ruisoto, Silvia L Vaca, José J López-Goñi, Raúl Cacho, Iván Fernández-Suárez
The role of job satisfaction and other psychosocial variables in problematic alcohol consumption within professional settings remains understudied. The aim of this study is to assess the level of problematic alcohol consumption among male and female university professors and associated psychosocial variables. A total of 360 professors (183 men and 177 women) of a large private university in Ecuador were surveyed using standardized instruments for the following psychosocial measures: alcohol consumption, job satisfaction, psychological stress, psychological flexibility, social support and resilience...
September 15, 2017: International Journal of Environmental Research and Public Health
https://www.readbyqxmd.com/read/28906440/native-and-heated-hydrolysates-of-milk-proteins-and-their-capacity-to-inhibit-lipid-peroxidation-in-the-zebrafish-larvae-model
#6
Wilman Carrillo, Xavier Guzmán, Edgar Vilcacundo
Casein and whey proteins with and without heat treatment were obtained of whole milk and four commercial milks in Ecuador, and were hydrolyzed. Then, their capacity to inhibit the lipid peroxidation using the TBARS method was evaluated at concentrations of 0.02, 0.04, 0.2, and, 0.4 mg/mL. Native and heated hydrolysates of milk proteins present high inhibitions of lipid peroxidation with a dose dependent effect both in vivo and in vitro tests. Casein and whey proteins obtained from whole milk were the ones with the highest anti-oxidant activity in vitro and in vivo test...
September 14, 2017: Foods (Basel, Switzerland)
https://www.readbyqxmd.com/read/28905263/the-cricotopus-oliveiriella-diptera-chironomidae-of-the-high-altitude-andean-streams-with-description-of-a-new-species-c-o-rieradevallae
#7
N Prat, A Paggi, C Ribera, R Acosta, B Ríos-Touma, C Villamarín, F Rivera, P Ossa, M Rieradevall
The genus Oliveiriella (Chironomidae, Orthocladiinae) was erected by Wiedenbrug & Fittkau (1997). The adults have characteristic black spots on their wings and other characteristics similar to the genus Cricotopus. Pupal skins are very characteristic with strong short spines in the anal lobe instead of setae, while larvae are distinguishable by the long anal papillae and the intense blue color of their body. However, Andersen et al (2013) consider Oliveiriella as a subgenera of Cricotopus. In this paper, using the sequences of the cox1 gene, we conclude that Oliveiriella should be considered a subgenus within Cricotopus, confirming its status in Andersen et al (2013)...
September 13, 2017: Neotropical Entomology
https://www.readbyqxmd.com/read/28903706/cross-situational-self-consistency-in-nine-cultures-the-importance-of-separating-influences-of-social-norms-and-distinctive-dispositions
#8
Kenneth D Locke, A Timothy Church, Khairul A Mastor, Guy J Curtis, Pamela Sadler, Kelly McDonald, José de Jesús Vargas-Flores, Joselina Ibáñez-Reyes, Hiroaki Morio, Jose Alberto S Reyes, Helena F Cabrera, Rina Mazuera Arias, Brigida Carolina Rincon, Neida Coromoto Albornoz Arias, Arturo Muñoz, Fernando A Ortiz
We assessed self-consistency (expressing similar traits in different situations) by having undergraduates in the United States ( n = 230), Australia ( n = 220), Canada ( n = 240), Ecuador ( n = 101), Mexico ( n = 209), Venezuela ( n = 209), Japan ( n = 178), Malaysia ( n = 254), and the Philippines ( n = 241) report the traits they expressed in four different social situations. Self-consistency was positively associated with age, well-being, living in Latin America, and not living in Japan; however, each of these variables showed a unique pattern of associations with various psychologically distinct sources of raw self-consistency, including cross-situationally consistent social norms and injunctions...
July 2017: Personality & Social Psychology Bulletin
https://www.readbyqxmd.com/read/28902860/alien-species-pathways-to-the-galapagos-islands-ecuador
#9
M Verónica Toral-Granda, Charlotte E Causton, Heinke Jäger, Mandy Trueman, Juan Carlos Izurieta, Eddy Araujo, Marilyn Cruz, Kerstin K Zander, Arturo Izurieta, Stephen T Garnett
Alien species, one of the biggest threats to natural ecosystems worldwide, are of particular concern for oceanic archipelagos such as Galápagos. To enable more effective management of alien species, we reviewed, collated and analysed all available records of alien species for Galápagos. We also assembled a comprehensive dataset on pathways to and among the Galápagos Islands, including tourist and resident numbers, tourist vessels, their itineraries and visitation sites, aircraft capacity and occupancy, air and sea cargo and biosecurity interceptions...
2017: PloS One
https://www.readbyqxmd.com/read/28901976/determinants-of-short-term-movement-in-a-developing-region-and-implications-for-disease-transmission
#10
Alicia N M Kraay, James Trostle, Andrew F Brouwer, William C Trujillo, Joseph N S Eisenberg
BACKGROUND: Human mobility is important for infectious disease spread. However, little is known about how travel varies by demographic groups and how this heterogeneity influences infectious disease risk. METHODS: We analyzed ten years of survey data from 15 communities in a remote but rapidly changing region in rural Ecuador where road development in the past 15-20 years has dramatically changed travel. We identify determinants of travel and incorporate them into an infection transmission model...
September 7, 2017: Epidemiology
https://www.readbyqxmd.com/read/28900630/determination-of-vitamin-d-status-in-a-population-of-ecuadorian-subjects
#11
G Maldonado, C Paredes, R Guerrero, C Ríos
INTRODUCTION: Vitamin D is a preprohormone known to play a key role in phosphocalcic metabolism; its main source comes from the synthesis at the skin level by ultraviolet (UV) radiation. OBJECTIVE: The purpose of this study was to determine the levels of vitamin D in an Ecuadorian population. MATERIALS AND METHODS: Retrospective study of Ecuadorian subjects from the city of Guayaquil, who had an initial study of 25 (OH)-D serum, as the indicator of Vitamin D status, in the period of 2015-2016...
2017: TheScientificWorldJournal
https://www.readbyqxmd.com/read/28899518/relationship-between-obstructive-sleep-apnea-and-neuroimaging-signatures-of-cerebral-small-vessel-disease-in-community-dwelling-older-adults-the-atahualpa-project
#12
Oscar H Del Brutto, Robertino M Mera, Mauricio Zambrano, Pablo R Castillo
BACKGROUND/OBJECTIVES: Evidence of a relationship between obstructive sleep apnea (OSA) and neuroimaging signatures of cerebral small vessel disease (SVD) is limited. The present study aimed to evaluate this association in older adults living in rural Ecuador, where small vessel disease is a major pathogenetic mechanism underlying stroke. METHODS: A representative random sample of Atahualpa residents aged ≥60 years enrolled in the Atahualpa Project neuroimaging substudy underwent a single-night diagnostic polysomnography...
September 2017: Sleep Medicine
https://www.readbyqxmd.com/read/28890596/explaining-accessibility-and-satisfaction-related-to-healthcare-a-mixed-methods-approach
#13
Pablo Cabrera-Barona, Thomas Blaschke, Stefan Kienberger
Accessibility and satisfaction related to healthcare services are conceived as multidimensional concepts. These concepts can be studied using objective and subjective measures. In this study, we created two indices: a composite healthcare accessibility index (CHCA) and a composite healthcare satisfaction index (CHCS). To calculate the CHCA index we used three indicators based on three components of multidimensional healthcare accessibility: availability, acceptability and accessibility. In the indicator based on the component of accessibility, we included an innovative perceived time-decay parameter...
2017: Social Indicators Research
https://www.readbyqxmd.com/read/28889342/life-cycle-of-amblyomma-mixtum-acari-ixodidae-parasitizing-different-hosts-under-laboratory-conditions
#14
Francisco Tobias Barradas Piña, Vinicius da Silva Rodrigues, Leandro de Oliveira Souza Higa, Marcos Valério Garcia, Jacqueline Cavalcante Barros, Adalberto Angel Pérez de León, Renato Andreotti
Amblyomma mixtum is a tick species in the Amblyomma cajennense complex. The known geographic range of A. mixtum extends from Texas in the USA to western Ecuador and some islands in the Caribbean. Amblyomma mixtum is a vector of disease agents of veterinary and public health importance. The objective of this study was to describe the life cycle of A. mixtum under laboratory conditions. Bovines, rabbits and sheep were infested with larvae, nymphs, and adult ticks under controlled conditions to assess several biological parameters...
September 9, 2017: Experimental & Applied Acarology
https://www.readbyqxmd.com/read/28886104/availability-diversification-and-versatility-explain-human-selection-of-introduced-plants-in-ecuadorian-traditional-medicine
#15
G Hart, Orou G Gaoue, Lucía de la Torre, Hugo Navarrete, Priscilla Muriel, Manuel J Macía, Henrik Balslev, Susana León-Yánez, Peter Jørgensen, David Cameron Duffy
Globally, a majority of people use plants as a primary source of healthcare and introduced plants are increasingly discussed as medicine. Protecting this resource for human health depends upon understanding which plants are used and how use patterns will change over time. The increasing use of introduced plants in local pharmacopoeia has been explained by their greater abundance or accessibility (availability hypothesis), their ability to cure medical conditions that are not treated by native plants (diversification hypothesis), or as a result of the introduced plants' having many different simultaneous roles (versatility hypothesis)...
2017: PloS One
https://www.readbyqxmd.com/read/28885225/rey-osterrieth-complex-figure-copy-and-immediate-recall-3-minutes-normative-data-for-spanish-speaking-pediatric-populations
#16
J C Arango-Lasprilla, D Rivera, M M Erlt, J M Muñoz Mancilla, C E García-Guerrero, W Rodriguez-Irizarry, A Aguayo Arelis, Y Rodríguez-Agudelo, M D Barrios Nevado, M Vélez-Coto, T P Yacelga Ponce, A Rigabert, C García de la Cadena, S Pohlenz Amador, E Vergara-Moragues, M Soto-Añari, A I Peñalver Guia, M Saracostti Schwartzman, R Ferrer-Cascales
OBJECTIVE: To generate normative data for the Rey- Osterrieth Complex Figure (ROCF) in Spanish-speaking pediatric populations. METHOD: The sample consisted of 4,373 healthy children from nine countries in Latin America (Chile, Cuba, Ecuador, Guatemala, Honduras, Mexico, Paraguay, Peru, and Puerto Rico) and Spain. Each participant was administered the ROCF as part of a larger neuropsychological battery. The ROCF copy and immediate recall (3 minutes) scores were normed using multiple linear regressions and standard deviations of residual values...
September 5, 2017: NeuroRehabilitation
https://www.readbyqxmd.com/read/28884585/analysis-of-the-cost-effectiveness-of-carbetocin-for-the-prevention-of-hemorrhage-following-cesarean-delivery-in-ecuador
#17
Aquiles Rodrigo Henríquez-Trujillo, Ruth Alicia Lucio-Romero, Kerlly Bermúdez-Gallegos
AIM: To compare the cost of carbetocin with that of oxytocin for the prevention and management of hemorrhage following cesarean delivery in Ecuador. MATERIALS & METHODS: We developed a decision tree based cost-effectiveness model to compare carbetocin with oxytocin in the prevention of hemorrhage following cesarean delivery in Ecuador. Our model was run from a third party payer perspective and was validated by local experts in the field. The efficacy of the interventions was determined based on a systematic review of the literature...
September 8, 2017: Journal of Comparative Effectiveness Research
https://www.readbyqxmd.com/read/28883931/rural-to-urban-migration-is-associated-with-increased-prevalence-of-childhood-wheeze-in-a-latin-american-city
#18
Alejandro Rodriguez, Maritza G Vaca, Martha E Chico, Laura C Rodrigues, Mauricio L Barreto, Philip J Cooper
INTRODUCTION: The urbanisation process has been associated with increases in asthma prevalence in urban and rural areas of low-income and middle-income countries (LMICs). However, although rural to urban migration and migration between cities are considered important determinants of this process, few studies have evaluated the effects of internal migration on asthma in urban populations of LMICs. The present study evaluated the effects of internal migration on the prevalence of wheeze in an urban area of Latin America...
2017: BMJ Open Respiratory Research
https://www.readbyqxmd.com/read/28869136/basilar-artery-dolichoectasia-prevalence-and-correlates-with-markers-of-cerebral-small-vessel-disease-in-community-dwelling-older-adults
#19
Oscar H Del Brutto, Robertino M Mera, Victor J Del Brutto, Aldo F Costa, Mauricio Zambrano, James Brorson
BACKGROUND: Basilar artery (BA) dolichoectasia has been associated with cerebral small vessel disease (SVD). However, studies have focused on stroke patients, and results cannot be extrapolated to the population at large. In this study, we aimed to assess prevalence of BA dolichoectasia and its association with SVD in community-dwelling older adults living in rural Ecuador. METHODS: Atahualpa residents aged ≥60 years underwent brain magnetic resonance imaging and magnetic resonance angiography of intracranial vessels...
August 28, 2017: Journal of Stroke and Cerebrovascular Diseases: the Official Journal of National Stroke Association
https://www.readbyqxmd.com/read/28861246/leaf-and-root-litter-decomposition-is-discontinued-at-high-altitude-tropical-montane-rainforests-contributing-to-carbon-sequestration
#20
Franca Marian, Dorothee Sandmann, Valentyna Krashevska, Mark Maraun, Stefan Scheu
We investigated how altitude affects the decomposition of leaf and root litter in the Andean tropical montane rainforest of southern Ecuador, that is, through changes in the litter quality between altitudes or other site-specific differences in microenvironmental conditions. Leaf litter from three abundant tree species and roots of different diameter from sites at 1,000, 2,000, and 3,000 m were placed in litterbags and incubated for 6, 12, 24, 36, and 48 months. Environmental conditions at the three altitudes and the sampling time were the main factors driving litter decomposition, while origin, and therefore quality of the litter, was of minor importance...
August 2017: Ecology and Evolution
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