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https://www.readbyqxmd.com/read/28931157/is-nocturnal-foraging-in-a-tropical-bee-an-escape-from-interference-competition
#1
Adam R Smith, Shannon M Kitchen, Ryan M Toney, Christian Ziegler
Temporal niche partitioning may result from interference competition if animals shift their activity patterns to avoid aggressive competitors. If doing so also shifts food sources, it is difficult to distinguish the effects of interference and consumptive competition in selecting for temporal niche shift. Bees compete for pollen and nectar from flowers through both interference and consumptive competition, and some species of bees have evolved nocturnality. Here, we use tropical forest canopy towers to observe bees (the night-flying sweat bees Megalopta genalis and M...
January 1, 2017: Journal of Insect Science
https://www.readbyqxmd.com/read/28931128/6-year-review-of-redivi-a-prospective-registry-of-imported-infectious-diseases-in-spain
#2
José A Pérez-Molina, Ana López-Polín, Begoña Treviño, Israel Molina, Josune Goikoetxea, Marta Díaz-Menéndez, Diego Torrús, Eva Calabuig, Agustín Benito, Rogelio López-Vélez
Background: Understanding and detecting imported diseases is a priority in the prevention and management of prevalent and emergent infectious diseases acquired abroad. The +Redivi network measures the burden of imported infections in Spain and is essential for closing the gap in travel medicine. Methods: Demographic characteristics, travel information, syndromes and confirmed travel-related diagnoses were registered in a standardised online database. Results: A total of 10 767 cases of imported infectious diseases were registered between October 2009 and December 2015...
September 1, 2017: Journal of Travel Medicine
https://www.readbyqxmd.com/read/28931082/barcoding-atlantic-canada-s-mesopelagic-and-upper-bathypelagic-marine-fishes
#3
Ellen L Kenchington, Shauna M Baillie, Trevor J Kenchington, Paul Bentzen
DNA barcode sequences were developed from 557 mesopelagic and upper bathypelagic teleost specimens collected in waters off Atlantic Canada. Confident morphological identifications were available for 366 specimens, of 118 species and 93 genera, which yielded 328 haplotypes. Five of the species were novel to the Barcode of Life Database (BOLD). Most of the 118 species conformed to expectations of monophyly and the presence of a "barcode gap", though some known weaknesses in existing taxonomy were confirmed and a deficiency in published keys was revealed...
2017: PloS One
https://www.readbyqxmd.com/read/28930538/snps-and-other-polymorhisms-associated-with-acaricide-resistance-in-rhipicephalus-microplus
#4
Gabriela Aguilar, Andrea Margarita Olvera, Bertha Isabel Carvajal, Juan Mosqueda
Ixodicides resistance of ticks is one of the most important problems for the livestock industry in tropical and subtropical regions, mainly due to the increase in cases of multiple resistance in all families of the ixodicides used. Molecular markers such as single nucleotide polymorphisms (SNPs) has been proposed to identify the resistance to ixodicides in Rhipicephalus microplus. Many studies have recently been conducted using SNPs and other types of molecular markers to determine if they are associated with resistance to different products in many parts of the world...
January 1, 2018: Frontiers in Bioscience (Landmark Edition)
https://www.readbyqxmd.com/read/28930276/essential-oil-of-cymbopogon-citratus-on-the-control-of-the-curvularia-leaf-spot-disease-on-maize
#5
Dalmarcia de Sousa Carlos Mourão, Talita Ferreira de Souza Pereira, Danival José de Souza, Aloísio Freitas Chagas Júnior, Mateus Sunti Dalcin, Ronice Alves Veloso, Evelynne Urzêdo Leão, Gil Rodrigues Dos Santos
The Curvularia Leaf Spot is becoming more common due to the culture expansion and the low resistance of the cultivated genotypes in tropical regions. Thus, the objective was to evaluate the fungitoxicity of the essential oil of Cymbopogon citratus upon the phytopathogen Curvularia lunata, causative agent of the Curvularia Leaf Spot. There was realized pathogenicity tests of C. lunata in maize plants, phytotoxicity of the essential oil of C. citratus and gas chromatography attached, germination tests of the conidia, and of in vitro inhibition of C...
August 20, 2017: Medicines (Basel, Switzerland)
https://www.readbyqxmd.com/read/28930265/a-review-on-ethno-medicinal-and-pharmacological-activities-of-sphenocentrum-jollyanum-pierre
#6
REVIEW
Olubukola Sinbad Olorunnisola, Olumide Samuel Fadahunsi, Peter Adegbola
Sphenocentrum jollyanum Pierre is a member of a diverse family of plants known as Menispermaceae. They are famous for a plethora of important biological functions. S. jollyanum is a shrub native to the tropical forest zones of West Africa and thrives in deep shade. It is widely cultivated in Cameroun, Sierra Leone, Nigeria, Ghana, and Côte d'Ivoire. S. jollyanum is employed in folk medicine as a cure for wounds, fever, coughs, high blood pressure, breast tumor, constipation, and as an aphrodisiac. Phytochemical investigations revealed that the plant is a rich source of secondary metabolites such as annin, alkaloids, saponins, and flavonoids...
July 3, 2017: Medicines (Basel, Switzerland)
https://www.readbyqxmd.com/read/28929534/emerging-arboviruses-in-rio-grande-do-sul-brazil-chikungunya-and-zika-outbreaks-2014-2016
#7
Tatiana Schäffer Gregianini, Tani Ranieri, Cátia Favreto, Zenaida Marion Alves Nunes, Gabriela Luchiari Tumioto Giannini, Nara Druck Sanberg, Marilda Tereza Mar da Rosa, Ana Beatriz Gorini da Veiga
QUESTIONS INVESTIGATED: The recent emergence of arboviruses such as Chikungunya virus (CHIKV) and Zika virus (ZIKV) in Brazil has posed a threat to human health and to the country's economy. Outbreaks occur mainly in tropical areas; however, increasing number of cases have been observed in Rio Grande do Sul (RS), the Southernmost state; therefore, surveillance of these arboviruses is essential for public health measures. DESIGN: In this study, we analyzed 1276 samples from patients with clinically suspected arboviral diseases between 2014 and 2016...
September 20, 2017: Reviews in Medical Virology
https://www.readbyqxmd.com/read/28929439/parasitism-of-spodoptera-litura-lepidoptera-noctuidae-by-microplitis-prodeniae-hymenoptera-braconidae
#8
Z Yan, J J Yue, C H Zhang, B Q Lu, Y L Xie, L X Zhang, Z Q Peng
Spodoptera litura Fabricius is a major vegetable pest that is widely distributed throughout tropical, subtropical and temperate regions. Microplitis prodeniae Rao and Chandry is a solitary endoparasitoid of S. litura. To assess the potential use of this parasitoid as a biological control agent, the reproductive schedule, fecundity and functional response of M. prodeniae were investigated under conditions of 28 ± 1°C and 70 ± 10% relative humidity with a 14:10-h L:D photoperiod. The parasitoid's average lifetime fecundity was 171...
September 19, 2017: Neotropical Entomology
https://www.readbyqxmd.com/read/28929415/pediatric-neurocysticercosis
#9
REVIEW
Pratibha Singhi, Arushi Gahlot Saini
Neurocysticercosis is the most common helminth infection of nervous system in humans caused by the encysted larvae of Taenia solium. It is a major cause of epilepsy in tropical areas and the most common cause of focal-onset seizures in North Indian children. Children with neurocysticercosis have pleomorphic manifestations depending on the location, number and viability of the cysts and host response. In endemic areas, neurocysticercosis should be clinically suspected in any child with recent-onset seizures, headache or focal motor deficits where there is no other suggestion of an underlying neurological disorder...
September 20, 2017: Indian Journal of Pediatrics
https://www.readbyqxmd.com/read/28929352/the-relative-sensitivity-of-freshwater-species-to-antimony-iii-implications-for-water-quality-guidelines-and-ecological-risk-assessments
#10
Maximilian Obinna Obiakor, Matthew Tighe, Zhen Wang, Chigozie Damian Ezeonyejiaku, Lily Pereg, Susan C Wilson
Antimony (Sb) is a pollutant in many jurisdictions, yet its threat to aquatic biota is unclear. Water quality guidelines (WQGs) for Sb are not well established and large uncertainty factors are commonly applied in derivation. We constructed freshwater species sensitivity distributions (SSDs) for Sb(III) using available acute toxicity data sourced from temperate and tropical regional studies. A tiered ecological risk assessment (ERA) approach using risk quotients (RQs) was applied for characterisation of risks presented by Sb(III) concentrations measured in the freshwater environment...
September 19, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28929284/effects-of-beneficial-microorganisms-on-lowland-rice-development
#11
Adriano Stephan Nascente, Marta Cristina Corsi de Filippi, Anna Cristina Lanna, Thatyane Pereira de Sousa, Alan Carlos Alves de Souza, Valácia Lemes da Silva Lobo, Gisele Barata da Silva
Microorganisms can promote plant growth by increasing phytomass production, nutrient uptake, photosynthesis rates, and grain yield, which can result in higher profits for farmers. However, there is limited information available about the physiological characteristics of lowland rice after treatment with beneficial microorganisms in the tropical region. This study aimed to determine the effects of different beneficial microorganisms and various application forms on phytomass production, gas exchange, and nutrient contents in the lowland rice cultivar 'BRS Catiana' in a tropical region...
September 19, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28929057/keratosis-obturans-a-disease-of-the-tropics
#12
A W Chong, R Raman
Keratosis obturans appears to be an obscure and relatively uncommon entity, even in literature search of journals and reference texts, so much so that there is not even any prevalence or incidence statistics available. However, the condition did not appear to be as uncommon based on our clinical observations. We have managed to obtain 64 patients representing 67 ears with keratosis obturans in our study period of about 18 months with a pattern of occurrence during this period. Humid weather seemed to play a role in the frequency of its appearance during certain period in our observation...
September 2017: Indian Journal of Otolaryngology and Head and Neck Surgery
https://www.readbyqxmd.com/read/28928379/ylehd-an-epoxide-hydrolase-with-promiscuous-haloalkane-dehalogenase-activity-from-tropical-marine-yeast-yarrowia-lipolytica-is-induced-upon-xenobiotic-stress
#13
Chandrika Bendigiri, Smita Zinjarde, Ameeta RaviKumar
Recalcitrant environmental pollutants, like bromoorganics and epoxides are hydrolysed with limited substrate specificities by microbial oxygenases, reductases, hydrolases and dehalogenases. Here, we report the identification and characterisation of a protein (XP_504164) from the tropical marine yeast Yarrowia lipolytica NCIM 3589, known to degrade bromoorganics and epoxides. Multiple sequence alignment suggests it belongs to α/β superfamily with conservation of catalytic triad and oxyanion hole motifs. The corresponding gene cloned and protein (Ylehd) expressed in E...
September 19, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28928253/filarial-pleural-effusion-without-peripheral-blood-or-pleural-fluid-eosinophilia
#14
Amitabh Das Shukla, Abhinav Chaudhary, Arvind Kumar Verma, Shreenivasa Anantha
Lymphatic filariasis is a tropical parasitic disease and is endemic in India. It is present in various forms but its manifestation as pleural effusion is rare. Here, we describe a case of 58-year-old male who presented with complaint of left side chest pain and breathlessness. He was investigated and diagnosed as a case of left side pleural effusion due to filariasis, with peripheral blood lymphocytosis but without peripheral blood or pleural fluid eosinophilia. Our case foregrounds that filariasis can present with peripheral blood lymphocytosis and without peripheral blood or pleural fluid eosinophilia...
September 19, 2017: BMJ Case Reports
https://www.readbyqxmd.com/read/28927770/-pyomyositis-in-children-two-cases-of-staphylococcus-aureus-infection
#15
F Gravot, J Hébert, A Robert-Dehault, R Bouttier, F Le Gall, G Blondin, P Vic
Pyomyositis is a term used to denote primary pyogenic infection of a skeletal muscle. It is a rare disease that was first described in immunodeficient patients living in tropical climates. Lately, however, cases involving healthy children have been described in temperate climates. The origin of primary pyomyositis remains unclear, although it is thought to be caused by seeding from transient bacteremia. Onset of disease is insidious, therefore necessitating rapid diagnosis to successfully select appropriate antibiotic therapy and avoid complications...
September 15, 2017: Archives de Pédiatrie: Organe Officiel de la Sociéte Française de Pédiatrie
https://www.readbyqxmd.com/read/28927458/sybr-green-based-one-step-quantitative-real-time-polymerase-chain-reaction-assay-for-the-detection-of-zika-virus-in-field-caught-mosquitoes
#16
Wei-Ping Tien, Gareth Lim, Gladys Yeo, Suzanna Nicole Chiang, Chee-Seng Chong, Lee-Ching Ng, Hapuarachchige Chanditha Hapuarachchi
BACKGROUND: The monitoring of vectors is one of the key surveillance measures to assess the risk of arbovirus transmission and the success of control strategies in endemic regions. The recent re-emergence of Zika virus (ZIKV) in the tropics, including Singapore, emphasizes the need to develop cost-effective, rapid and accurate assays to monitor the virus spread by mosquitoes. As ZIKV infections largely remain asymptomatic, early detection of ZIKV in the field-caught mosquitoes enables timely implementation of appropriate mosquito control measures...
September 19, 2017: Parasites & Vectors
https://www.readbyqxmd.com/read/28927441/insecticide-susceptibility-of-aedes-albopictus-and-ae-aegypti-from-brazil-and-the-swiss-italian-border-region
#17
Tobias Suter, Mônica Maria Crespo, Mariana Francelino de Oliveira, Thaynan Sama Alves de Oliveira, Maria Alice Varjal de Melo-Santos, Cláudia Maria Fontes de Oliveira, Constância Flávia Junqueira Ayres, Rosângela Maria Rodrigues Barbosa, Ana Paula Araújo, Lêda Narcisa Regis, Eleonora Flacio, Lukas Engeler, Pie Müller, Maria Helena Neves Lobo Silva-Filha
BACKGROUND: Aedes aegypti and Ae. albopictus are two highly invasive mosquito species, both vectors of several viruses, including dengue, chikungunya and Zika. While Ae. aegypti is the primary vector in the tropics and sub-tropics, Ae. albopictus is increasingly under the public health watch as it has been implicated in arbovirus-transmission in more temperate regions, including continental Europe. Vector control using insecticides is the pillar of most control programmes; hence development of insecticide resistance is of great concern...
September 19, 2017: Parasites & Vectors
https://www.readbyqxmd.com/read/28927400/genome-sequencing-of-the-staple-food-crop-white-guinea-yam-enables-the-development-of-a-molecular-marker-for-sex-determination
#18
Muluneh Tamiru, Satoshi Natsume, Hiroki Takagi, Benjamen White, Hiroki Yaegashi, Motoki Shimizu, Kentaro Yoshida, Aiko Uemura, Kaori Oikawa, Akira Abe, Naoya Urasaki, Hideo Matsumura, Pachakkil Babil, Shinsuke Yamanaka, Ryo Matsumoto, Satoru Muranaka, Gezahegn Girma, Antonio Lopez-Montes, Melaku Gedil, Ranjana Bhattacharjee, Michael Abberton, P Lava Kumar, Ismail Rabbi, Mai Tsujimura, Toru Terachi, Wilfried Haerty, Manuel Corpas, Sophien Kamoun, Günter Kahl, Hiroko Takagi, Robert Asiedu, Ryohei Terauchi
BACKGROUND: Root and tuber crops are a major food source in tropical Africa. Among these crops are several species in the monocotyledonous genus Dioscorea collectively known as yam, a staple tuber crop that contributes enormously to the subsistence and socio-cultural lives of millions of people, principally in West and Central Africa. Yam cultivation is constrained by several factors, and yam can be considered a neglected "orphan" crop that would benefit from crop improvement efforts...
September 19, 2017: BMC Biology
https://www.readbyqxmd.com/read/28926102/in-situ-temperature-relationships-of-biochemical-and-stomatal-controls-of-photosynthesis-in-four-lowland-tropical-tree-species
#19
Martijn Slot, Klaus Winter
Net photosynthetic carbon uptake of Panamanian lowland tropical forest species is typically optimal at 30-32°C. The processes responsible for the decrease in photosynthesis at higher temperatures are not fully understood for tropical trees. We determined temperature responses of maximum rates of RuBP-carboxylation (VCMax ) and RuBP-regeneration (JMax ), stomatal conductance (Gs ) and respiration in the light (RLight ) in situ for four lowland tropical tree species in Panama. Gs had the lowest temperature optimum (TOpt ), similar to that of net photosynthesis, and photosynthesis became increasingly limited by stomatal conductance as temperature increased...
September 19, 2017: Plant, Cell & Environment
https://www.readbyqxmd.com/read/28925153/-advances-on-chemical-constituents-and-pharmacological-activities-of-ceriops-genus
#20
Qing-Feng Guo, Lin Chen, Jing-Wei Ma, Yong Zhang
Plants of the genus Ceriops (Rhizophoraceae) consist of five species, which were widely distributed in tropical Asia, Eastern Africa and Oceania. So far,phytochemical studies showed that a total of 131 compounds including 120 terpenoids had been isolated from this genus, which exhibited anti-inflammatory, antihyperglycaemic, antitumor, anti-microbial, antioxidant, antifouling and antiviral activities. This article summarized the recent research progress of the chemical compositions and their pharmacological activities from the genus,which could provide reference for the development and utilization of the Ceriops plants...
October 2016: Zhongguo Zhong Yao za Zhi, Zhongguo Zhongyao Zazhi, China Journal of Chinese Materia Medica
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