keyword
MENU ▼
Read by QxMD icon Read
search

larval

keyword
https://www.readbyqxmd.com/read/28110187/insecticidal-activities-of-histone-deacetylase-inhibitors-against-a-dipteran-parasite-of-sheep-lucilia-cuprina
#1
Neil H Bagnall, Barney M Hines, Andrew J Lucke, Praveer K Gupta, Robert C Reid, David P Fairlie, Andrew C Kotze
Histone deacetylase inhibitors (HDACi) are being investigated for the control of various human parasites. Here we investigate their potential as insecticides for the control of a major ecto-parasite of sheep, the Australian sheep blowfly, Lucilia cuprina. We assessed the ability of HDACi from various chemical classes to inhibit the development of blowfly larvae in vitro, and to inhibit HDAC activity in nuclear protein extracts prepared from blowfly eggs. The HDACi prodrug romidepsin, a cyclic depsipeptide that forms a thiolate, was the most potent inhibitor of larval growth, with equivalent or greater potency than three commercial blowfly insecticides...
January 10, 2017: International Journal for Parasitology, Drugs and Drug Resistance
https://www.readbyqxmd.com/read/28109905/cloning-genetic-engineering-and-characterization-of-tmof-expressed-in-saccharomyces-cerevisiae-to-control-larval-mosquitoes
#2
Borovsky Dov, Sabine Nauewelaers, Charles A Powell, Robert G Shatters
Trypsin modulating oostatic factor, a decapaptide isolated from the ovaries of A. aegypti, is the physiological factor that terminates the trypsin biosynthesis after the blood meal. Earlier results obtained from feeding mosquito larvae and injecting female mosquitoes with TMOF show that trypsin biosynthesis and egg development are inhibited, indicating that TMOF traverses the gut epithelial cells and modulates trypsin biosynthesis, making it a potential larvacidal peptide hormone. Therefore, TMOF and TMOF green fluorescent protein (GFP) fusion protein with a trypsin cleavage site, allowing TMOF release in the larval gut, were expressed in S...
January 18, 2017: Journal of Insect Physiology
https://www.readbyqxmd.com/read/28109772/trichoderma-virens-as-a-biocontrol-of-toxocara-canis-in-vivo-evaluation
#3
Fernando de Souza Maia Filho, Anelise Oliveira da Silva Fonseca, Beatriz Maroneze Persici, Julia de Souza Silveira, Caroline Quintana Braga, Luciana Pötter, Sônia de Avila Botton, Daniela Isabel Brayer Pereira
BACKGROUND: Microorganisms have been widely studied as biological control agents of parasites of medical and veterinary importance. Coprophagous arthropods, bacteria and fungi are among the different organisms evaluated as potential biological control agents. Nematophagous fungi capture and digest the free forms of nematodes in the soil. Due to its zoonotic potential, Toxocara canis have been brought to the attention of researchers. AIMS: The aim of the present study was to determine whether the administration of embryonated T...
January 18, 2017: Revista Iberoamericana de Micología
https://www.readbyqxmd.com/read/28109717/dicer-1-regulates-proliferative-potential-of-drosophila-larval-neural-stem-cells-through-bantam-mirna-based-down-regulation-of-the-g1-s-inhibitor-dacapo
#4
Animesh Banerjee, Jagat Kumar Roy
The present work elucidates the role of miRNA in cell cycle regulation during brain development in Drosophila. Here we report that lineage specific depletion of dicer-1, a classically acknowledged miRNA biogenesis protein in neuroblasts leads to a reduction in their numbers and size in the third instar larval central brain. These brains also showed lower number of mitotically active cells and when homozygous mitotic clones were generated in an otherwise heterozygous dicer-1 mutant background via MARCM technique, they showed reduced number of progeny cells in individual clones, substantiating the adverse effect of the loss of dicer-1 on the proliferative potential of neuroblasts...
January 18, 2017: Developmental Biology
https://www.readbyqxmd.com/read/28108366/functional-analysis-of-a-tyrosinase-gene-involved-in-early-larval-shell-biogenesis-in-crassostrea-angulata-and-its-response-to-ocean-acidification
#5
Bingye Yang, Fei Pu, Lingling Li, Weiwei You, Caihuan Ke, Danqing Feng
The formation of the primary shell is a vital process in marine bivalves. Ocean acidification largely influences shell formation. It has been reported that enzymes involved in phenol oxidation, such as tyrosinase and phenoloxidases, participate in the formation of the periostracum. In the present study, we cloned a tyrosinase gene from Crassostrea angulata named Ca-tyrA1, and its potential function in early larval shell biogenesis was investigated. The Ca-tyrA1 gene has a full-length cDNA of 2430bp in size, with an open reading frame of 1896bp in size, which encodes a 631-amino acid protein that includes a 24-amino acid putative signal peptide...
January 17, 2017: Comparative Biochemistry and Physiology. Part B, Biochemistry & Molecular Biology
https://www.readbyqxmd.com/read/28108175/characterization-of-the-synergistic-interaction-between-beauveria-bassiana-strain-gha-and-bacillus-thuringiensis-morrisoni-strain-tenebrionis-applied-against-colorado-potato-beetle-larvae
#6
S P Wraight, M E Ramos
Studies were undertaken to further characterize the previously identified synergistic activity of Bacillus thuringiensis- and Beauveria bassiana-based biopesticides against Colorado potato beetle (CPB). A flowable concentrate of B. thuringiensis morrisoni strain tenebrionis (Bt) (Novodor® FC) and a wettable powder of B. bassiana strain GHA (Bb) (Mycotrol® 22WP) were applied against CPB larval populations infesting potato in field plots. Novodor FC and an oil-dispersion formulation of Bb (Mycotrol ES) were applied against second-instar CPB larvae on potted potato plants in greenhouse tests under low relative humidity (RH), variable-temperature conditions...
January 17, 2017: Journal of Invertebrate Pathology
https://www.readbyqxmd.com/read/28107480/drosophila-vps13-is-required-for-protein-homeostasis-in-the-brain
#7
Jan J Vonk, Wondwossen M Yeshaw, Francesco Pinto, Anita I E Faber, Liza L Lahaye, Bart Kanon, Marianne van der Zwaag, Antonio Velayos-Baeza, Raimundo Freire, Sven C van IJzendoorn, Nicola A Grzeschik, Ody C M Sibon
Chorea-Acanthocytosis is a rare, neurodegenerative disorder characterized by progressive loss of locomotor and cognitive function. It is caused by loss of function mutations in the Vacuolar Protein Sorting 13A (VPS13A) gene, which is conserved from yeast to human. The consequences of VPS13A dysfunction in the nervous system are still largely unspecified. In order to study the consequences of VPS13A protein dysfunction in the ageing central nervous system we characterized a Drosophila melanogaster Vps13 mutant line...
2017: PloS One
https://www.readbyqxmd.com/read/28106957/the-influence-of-habitat-heterogeneity-and-latitude-on-gamma-diversity-of-the-nearctic-simuliidae-a-ubiquitous-group-of-stream-dwelling-insects
#8
John W McCreadie, Rachel H Williams, Sam Stutsman, Debra S Finn, Peter H Adler
Among the most prominent, large-scale patterns of species richness are the increases in richness with decreasing latitude and with increasing habitat heterogeneity. Using the stream-dwelling larval and pupal stages of North American black flies (Diptera: Simuliidae), we address three broad questions about species richness: (i) Does a significant latitude-richness relationship exist? (ii) How does habitat heterogeneity influence gamma diversity? (iii) What is the sign (positive or negative) of the latitude-richness and the heterogeneity-richness relationships? We found no evidence that habitat heterogeneity influences gamma diversity...
January 20, 2017: Insect Science
https://www.readbyqxmd.com/read/28106260/first-report-of-stegomyia-aegypti-%C3%A2-aedes-aegypti-in-mexico-city-mexico
#9
P Kuri-Morales, F Correa-Morales, C González-Acosta, G Sánchez-Tejeda, E Dávalos-Becerril, M Fernanda Juárez-Franco, A Díaz-Quiñonez, H Huerta-Jimenéz, M D Mejía-Guevara, M Moreno-García, J F González-Roldán
Stegomyia aegypti (= Aedes aegypti) (Diptera: Culicidae) is a species of mosquito that is currently widespread in Mexico. Historically, the mosquito has been distributed across most tropical and subtropical areas lower than 1700 m a.s.l. Currently, populations that are found at higher altitudes in regions with cold and dry climates suggest that these conditions do not limit the colonization and population growth of S. aegypti. During a survey of mosquitoes in September 2015, larvae of S. aegypti mosquitoes were found in two different localities in Mexico City, which is located at about 2250 m a...
January 20, 2017: Medical and Veterinary Entomology
https://www.readbyqxmd.com/read/28104670/mutants-for-drosophila-isocitrate-dehydrogenase-3b-are-defective-in-mitochondrial-function-and-larval-cell-death
#10
Dianne M Duncan, Paula Kiefel, Ian Duncan
The death of larval salivary gland cells during metamorphosis in Drosophila melanogaster has been a key system for studying steroid controlled programmed cell death. This death is induced by a pulse of the steroid hormone ecdysone that takes place at the end of the prepupal period. For many years, it has been thought that the ecdysone direct response gene Eip93F (E93) plays a critical role in initiating salivary gland cell death. This conclusion was based largely on the finding that the three "type" alleles of E93 cause a near-complete block in salivary gland cell death...
January 18, 2017: G3: Genes—Genomes—Genetics
https://www.readbyqxmd.com/read/28103957/rna-interference-mediated-knockdown-of-brugia-malayi-udp-galactopyranose-mutase-severely-affects-parasite-viability-embryogenesis-and-in-vivo-development-of-infective-larvae
#11
Sweta Misra, Jyoti Gupta, Shailja Misra-Bhattacharya
BACKGROUND: Galactofuranose is an essential cell surface component present in bacteria, fungi and several nematodes such as Caenorhabditis spp., Brugia spp., Onchocerca spp. and Strongyloides spp. This sugar maintains the integrity of parasite surface and is essential for virulence. UDP-Galactopyranose mutase (bmugm) plays a key role in Galf biosynthesis by catalyzing conversion of UDP-Galactopyranose into UDP-galactofuranose and knockout studies of the gene in Leishmania major, Mycobacterium and Aspergillus fumigatus displayed attenuated virulence while RNA interference study in C...
January 19, 2017: Parasites & Vectors
https://www.readbyqxmd.com/read/28102318/transcriptional-profiling-of-olfactory-system-development-identifies-distal-antenna-as-a-regulator-of-subset-of-neuronal-fates
#12
Scott Barish, Qingyun Li, Jia W Pan, Charlie Soeder, Corbin Jones, Pelin C Volkan
Drosophila uses 50 different olfactory receptor neuron (ORN) classes that are clustered within distinct sensilla subtypes to decipher their chemical environment. Each sensilla subtype houses 1-4 ORN identities that arise through asymmetric divisions of a single sensory organ precursor (SOP). Despite a number of mutational studies investigating the regulation of ORN development, a majority of the transcriptional programs that lead to the different ORN classes in the developing olfactory system are unknown. Here we use transcriptional profiling across the time series of antennal development to identify novel transcriptional programs governing the differentiation of ORNs...
January 19, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28101904/functional-analysis-of-the-circadian-clock-gene-timeless-in-tribolium-castaneum
#13
Chengjun Li, Xiaopei Yun, Xiaojuan Yu, Bin Li
Circadian rhythms are endogenous oscillations with a period of about 24 h driven by a circadian clock. So far, the variable oscillators were designed in insects. To explore the circadian clock of Tribolium castaneum, we have cloned the clock gene timeless (Tctimeless). Its open reading frame is 3240 bp in length and consists of 10 exons. Tctimeless is highly expressed in the late pupal stage. Tissue-specific expression analysis in late adult stages revealed high expression of Tctimeless in the head, epidermis, fat body and accessory glands...
January 19, 2017: Insect Science
https://www.readbyqxmd.com/read/28101647/a-real-time-pcr-approach-to-identify-anthelmintic-resistant-nematodes-in-sheep-farms
#14
M Milhes, M Guillerm, M Robin, M Eichstadt, C Roy, C Grisez, F Prévot, E Liénard, E Bouhsira, M Franc, P Jacquiet
Resistance to fenbendazole, ivermectin, and moxidectin was explored by a fecal egg count reduction test in four meat sheep flocks in southwestern France where anthelmintic resistance was suspected. The FECR test results of the present study confirmed the presence of benzimidazole resistance in three out of the four farms and the presence of ivermectin resistance in one flock. In addition, a suspicion of moxidectin resistance was shown in this latter farm. Both conventional morphological and molecular identifications were performed on larval cultures before and after the treatment in the studied farms...
January 18, 2017: Parasitology Research
https://www.readbyqxmd.com/read/28099770/cryptic-lineages-of-a-common-alpine-mayfly-show-strong-life-history-divergence
#15
Marie Leys, Irene Keller, Christopher T Robinson, Katja Räsänen
Understanding ecological divergence of morphologically similar but genetically distinct species ̶ previously considered as a single morphospecies ̶ is of key importance in evolutionary ecology and conservation biology. Despite their morphological similarity, cryptic species may have evolved distinct adaptations. If such ecological divergence is unaccounted for, any predictions about their responses to environmental change and biodiversity loss may be biased. We used spatio-temporally replicated field surveys of larval cohort structure and population genetic analyses (using nuclear microsatellite markers) to test for life history divergence between two cryptic lineages of the alpine mayfly Baetis alpinus in the Swiss Alps...
January 18, 2017: Molecular Ecology
https://www.readbyqxmd.com/read/28098234/maternal-cortisol-stimulates-neurogenesis-and-affects-larval-behaviour-in-zebrafish
#16
Carol Best, Deborah M Kurrasch, Mathilakath M Vijayan
Excess glucocorticoid transferred from stressed mother to the embryo affects developing vertebrate offspring, but the underlying programming events are unclear. In this study, we tested the hypothesis that increased zygotic glucocorticoid deposition, mimicking a maternal stress scenario, modifies early brain development and larval behaviour in zebrafish (Danio rerio). Cortisol was microinjected into the yolk at one cell-stage, to mimic maternal transfer, and the larvae [96 hours post-fertilization (hpf)] displayed increased activity in light and a reduction in thigmotaxis, a behavioural model for anxiety, suggesting an increased propensity for boldness...
January 18, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28098183/seasonal-and-regional-presence-of-hymenopteran-parasitoids-of-drosophila-in-switzerland-and-their-ability-to-parasitize-the-invasive-drosophila-suzukii
#17
Valery Knoll, Thomas Ellenbroek, Jörg Romeis, Jana Collatz
Since its introduction into Europe the invasive Drosophila suzukii has established and spread widely, thereby entering habitats populated by native Drosophila species and their natural enemies. The highly prolific D. suzukii will likely interact with these species as a competitor, host or prey. To investigate potential interactions of D. suzukii with parasitoids, a field survey was conducted across several fruit-growing regions in Switzerland in two consecutive years. Eight species of hymenopteran parasitoids were collected using D...
January 18, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28097823/excess-retinoic-acid-induces-fusion-of-centra-by-degenerating-intervertebral-ligament-cells-in-japanese-flounder-paralichthys-olivaceus
#18
Xiaoming Wu, Qiran Chen, Youhei Washio, Hayato Yokoi, Tohru Suzuki
In marine aquaculture fish, excessive supplement of vitamin A (VA) to zooplanktons for larval culture and experimental exposure of larvae to retinoic acid (RA: active form of VA) have been known to cause vertebral deformity. However, the tissues in the developing vertebral column that are affected by RA and the progression of vertebral deformity remain undetermined. To examine these questions, we histologically traced the progress of vertebral deformity induced by RA in Japanese flounder (Paralichthys olivaceus)...
January 18, 2017: Journal of Experimental Zoology. Part B, Molecular and Developmental Evolution
https://www.readbyqxmd.com/read/28097662/thermal-requirements-for-growth-survival-and-aerobic-performance-of-weatherfish-larvae-misgurnus-fossilis
#19
B Schreiber, J Monka, B Drozd, M Hundt, M Weiss, T Oswald, R Gergs, R Schulz
Thermal requirements of larval weatherfish Misgurnus fossilis were investigated in terms of growth, survival and aerobic performance. Growth and survival of M. fossilis larvae acclimated to five temperatures (11, 15, 19, 23 and 27° C) were measured over 25 days. In the upper temperature treatments (19, 23 and 27° C), survival of larvae was stable throughout the entire rearing period (>75%), whereas 11 and 15° C resulted in severe declines in survival (to <10%). Growth of larvae (expressed as dry mass and total length) was highest at 19 and 23° C, but significantly decreased at 27° C...
January 18, 2017: Journal of Fish Biology
https://www.readbyqxmd.com/read/28096859/occurrence-and-intensity-of-anisakid-nematode-larvae-in-some-commercially-important-fish-species-in-persian-gulf
#20
Maryam Dadar, Alireza Alborzi, Rahim Peyghan, Milad Adel
BACKGROUND: Anisakid nematodes are common parasites of fish, mammals, fish-eating birds, and reptiles with a worldwide distribution, causing diseases in human, fish and important economic losses. METHODS: A preliminary epidemiological study was carried out on Anisakid nematodes larvae in some commercially important fish species to evaluate the anisakid nematode larvae from greater lizardfish, (Saurida tumbil), Japanese thread fin bream (Nemipterus japonicus), crocodile longtom (Tylosurus crocodilus crocodiles) and longfin trevally (Carangoides armatus) from the Persian Gulf of Iran...
April 2016: Iranian Journal of Parasitology
keyword
keyword
75534
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"