keyword
MENU ▼
Read by QxMD icon Read
search

larvae

keyword
https://www.readbyqxmd.com/read/28330080/transgenic-rice-plants-expressing-synthetic-cry2ax1-gene-exhibits-resistance-to-rice-leaffolder-cnaphalocrosis-medinalis
#1
R Manikandan, N Balakrishnan, D Sudhakar, V Udayasuriyan
Bacillus thuringiensis is a major source of insecticidal genes imparting insect resistance in transgenic plants. Level of expression of transgenes in transgenic plants is important to achieve desirable level of resistance against target insects. In order to achieve desirable level of expression, rice chloroplast transit peptide sequence was fused with synthetic cry2AX1 gene to target its protein in chloroplasts. Sixteen PCR positive lines of rice were generated by Agrobacterium mediated transformation using immature embryos...
June 2016: 3 Biotech
https://www.readbyqxmd.com/read/28329817/early-life-benzo-a-pyrene-exposure-causes-neurodegenerative-syndromes-in-adult-zebrafish-danio-rerio-and-the-mechanism-involved
#2
Dongxu Gao, Chonggang Wang, Zhihui Xi, Yixi Zhou, Yuanchuan Wang, Zhenghong Zuo
There is increasing recognition of the importance of early-life environmental exposures in health disorders at later-life stages. The aim of this study was to evaluate whether early-life exposure to benzo[a]pyrene (BaP) could induce neurodegenerative syndromes at later-life stages in zebrafish. Embryos were exposed to BaP at doses of 0, 0.05, 0.5, 5, and 50 nM from early embryogenesis to 96 h post-fertilization (hpf), then transferred to clean water and maintained for 365 days. We found that BaP decreased locomotor and cognitive ability, neurotransmitter levels of dopamine, 3,4-dihydroxyphenylacetic acid and norepinephrine; and induced loss of dopaminergic neurons and resulted in neurodegeneration...
January 30, 2017: Toxicological Sciences: An Official Journal of the Society of Toxicology
https://www.readbyqxmd.com/read/28329712/toxicity-of-effluents-from-gasoline-stations-oil-water-separators-to-early-life-stages-of-zebrafish-danio-rerio
#3
Romulo Nepomuceno Alves, Célio Freire Mariz, Driele Ventura de Paulo, Paulo S M Carvalho
Used petroleum hydrocarbons and gasoline stations runoff are significant sources of polycyclic aromatic hydrocarbons (PAHs) to aquatic ecosystems. Samples of the final effluent of oil-water-separators were collected at gasoline stations in the metropolitan region of Recife, Brazil, before release to sewage or rainwater systems. Effluent soluble fractions (ESF) were prepared and bioassays were performed according to the Fish Embryo Toxicity Test. The test involved exposing zebrafish Danio rerio embryos to dilutions of the ESFs for 96 h, with daily examination of lethality and sublethal morphological effects integrated through the General Morphology Score (GMS), based on the achievement of developmental hallmarks...
March 8, 2017: Chemosphere
https://www.readbyqxmd.com/read/28329006/dimorphic-cocoons-of-the-cecropia-moth-hyalophora-cecropia-morphological-behavioral-and-biophysical-differences
#4
Patrick A Guerra, Steven M Reppert
The larvae of the giant silk moth (Hyalophora cecropia) spin strikingly dimorphic, multilayered cocoons that are either large and fluffy (baggy) or significantly smaller and tightly woven (compact). Although these cocoon-morphs share the same function (i.e., housing for pupal to adult development during overwintering), previous work has been unable to determine why cocoon dimorphism exists. We addressed this issue in cecropia moth cocoons collected along power line right-of-way habitats in Massachusetts. We first characterized the architectural differences between cocoon-morphs for all three cocoon sections (outer and inner envelopes, and the intermediate layer separating the two)...
2017: PloS One
https://www.readbyqxmd.com/read/28328597/clinical-manifestation-of-a-patient-with-forehead-sparganosis
#5
Soung Min Kim, Emmanuel Kofi Amponsah, Mi Young Eo, Yun Ju Cho, Suk Keun Lee
Human sparganosis is a parasite infection caused by the larva of a tapeworm of the genus Spirometra. Ocular, central nervous system, auricular, pulmonary, intraosseous, intraperitoneal, and subcutaneous manifestations of this infection in the neck or inguinal region have been described.The authors report the rare occurrence of cutaneous forehead sparganosis of a 19-year-old male who presented with a soft subcutaneous mass in the forehead, along with a related literature review.
March 21, 2017: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/28327954/genome-sequencing-of-the-winged-midge-parochlus-steinenii-from-the-antarctic-peninsula
#6
Sanghee Kim, Mijin Oh, Woongsic Jung, Joonho Park, Han-Gu Choi, Seung Chul Shin
Background: In the Antarctic, only two species of Chironomidae occur naturally-the wingless midge, Belgica antarctica , and the winged midge, Parochlus steinenii . B. antarctica is an extremophile with unusual adaptations. The larvae of B. antarctica are desiccation- and freeze-tolerant and the adults are wingless. Recently, the compact genome of B. antarctica was reported and it is the first Antarctic eukaryote to be sequenced. Although P. steinenii occurs naturally in the Antarctic with B...
February 24, 2017: GigaScience
https://www.readbyqxmd.com/read/28327829/-western-blot-diagnostic-yield-for-simultaneous-antibody-detection-in-patients-with-human-cysticercosis-hydatidosis-and-human-fascioliasis
#7
Kelly Davelois, Hermes Escalante, César Jara
. To determine the diagnostic yield using western blotting to simultaneously detect antibodies in patients with human cysticercosis, hydatidosis, and human fascioliasis. Materials and methods . Cross-sectional study of diagnostic yield assessment. Excretory/secretory antigens were obtained from Taenia solium larvae, Echinococcus granulosus cysts, and the adult flukes of Fasciola hepática, which were then separated using the polyacrylamide gel electrophoresis technique, transferred, and attached to a nitrocellulose membrane to be probed with sera from the patient infected with the three parasites...
October 2016: Revista Peruana de Medicina Experimental y Salud Pública
https://www.readbyqxmd.com/read/28327815/in-vivo-and-in-vitro-activity-of-oil-extract-of-garlic-allium-sativum-linnaeus-against-schistosoma-japonicum-cercariae
#8
Kang Wan, Peng Wang, Leibo Zhang
INTRODUCTION: The activity of garlic oil extract against Schistosoma japonicum cercariae was evaluated. METHODS: The in vitro and in vivo cercaricidal activities against S. japonicum larvae were determined. RESULTS: Exposure to ≥ 10-6 (v/v) garlic emulsions for 30 min led to 100% cercariae mortality; pre-exposure treatment with ≥ 10-4 (v/v) garlic emulsions showed 100% preventive efficacy against S. japonicum infection, while pre-treatment with 10-5 and 10-6 (v/v) emulsions achieved 20%-40% preventive efficacy and 35...
January 2017: Revista da Sociedade Brasileira de Medicina Tropical
https://www.readbyqxmd.com/read/28327808/prevalence-and-distribution-of-angiostrongylus-cantonensis-nematoda-angiostrongylidae-in-achatina-fulica-mollusca-gastropoda-in-baixada-santista-s%C3%A3-o-paulo-brazil
#9
Laura Rocha Guerino, Iracy Lea Pecora, Marcel Sabino Miranda, Cryslaine Aguiar-Silva, Omar Dos Santos Carvalho, Roberta Lima Caldeira, Reinaldo José da Silva
INTRODUCTION: Angiostrongylus cantonensis is causes eosinophilic meningoencephalitis in humans. Worldwide expansion of this nematode is linked to the dispersion of their hosts. This study aimed to determine the prevalence of A. cantonensis infection in Achatina fulica in the nine municipalities that make up Baixada Santista, São Paulo, Brazil. METHODS: Angiostrongylus cantonensis larvae were analyzed using optical microscopy. We performed polymerase chain reaction and restriction fragment length polymorphism using restriction endonuclease ClaI, directed to the internal transcribed spacer region 2 of A...
January 2017: Revista da Sociedade Brasileira de Medicina Tropical
https://www.readbyqxmd.com/read/28327568/aminopeptidase-n1-is-involved-in-bacillus-thuringiensis-cry1ac-toxicity-in-the-beet-armyworm-spodoptera-exigua
#10
Lin Qiu, Songhe Cui, Lang Liu, Boyao Zhang, Weihua Ma, Xiaoping Wang, Chaoliang Lei, Lizhen Chen
Understanding how insecticidal proteins from the bacterium Bacillus thuringiensis (Bt) interact with their hosts is crucial to fully explain the molecular bases of Bt specificity and insecticidal activity. Previous studies support ATP binding cassette transporters (ABCC2/3) and one cadherin-like protein are Cry1Ac functional receptors in the beet armyworm (Spodoptera exigua). In this study, a combined one-dimensional gel electrophoresis and immunoblotting approach identified aminopeptidase N (APNs) as putative Cry1Ac binding proteins in the midgut brush border membrane of S...
March 22, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28326841/a-new-iridoid-glycoside-and-a-new-cinnamoyl-glycoside-from-scrophularia-ningpoensis-hemsl
#11
Jun Zhang, Fanny C F Ip, Yan Liang, Nancy Y Ip, Ba-Lian Zhong, Chun-Wang Lai, Shi-Hai Xu
A new iridoid glycoside, namely 8-O-(threo-2, 3-dihydroxyl-3-phenyl-propionoyl)-harpagide (1), along with a new cinnamoyl glycoside named as cis-sibirioside A (2), were isolated from Scrophularia ningpoensis Hemsl. Their chemical structures were completely established by spectroscopic methods and comparison with related literatures. Compound 1 exhibited moderate antifouling effect against the settlement of Balanus amphitrite larvae with IC50 being 13.5 μg/mL and LC50 > 25 μg/mL.
March 22, 2017: Natural Product Research
https://www.readbyqxmd.com/read/28326550/from-neuron-to-behavior-sensory-motor-coordination-of-zebrafish-turning-behavior
#12
REVIEW
Keiko Umeda, Wataru Shoji
Recent development of optogenetics brought non-invasive neural activation in living organisms. Transparent zebrafish larva is one of the suitable animal models for this technique, which enables us to investigate neural circuits for behaviors based on a whole individual nervous system. In this article we review our recent finding that suggests sensory-motor coordination in larval zebrafish escape behavior. When water vibration stimulates mechanosensory Rohon-Beard (RB) neurons, intra-spinal reflex circuit launches contralateral trunk muscle contraction that makes rapid body curvature for turning...
March 21, 2017: Development, Growth & Differentiation
https://www.readbyqxmd.com/read/28326461/toxicity-and-detoxification-mechanism-of-black-pepper-and-its-major-constituent-in-controlling-rhynchophorus-ferrugineus-olivier-curculionidae-coleoptera
#13
A Hussain, M Rizwan-Ul-Haq, H Al-Ayedh, A M Aljabr
The survival, feeding response, and detoxification mechanism of Rhynchophorus ferrugineus Olivier, a key pest responsible for destruction of date palm, was examined with different extracts of Piper nigrum and its major constituent (piperine) identified by GC-MS. In the present study, toxicity of different extracts of black pepper was evaluated by incorporating diffferent doses of extracts into the artificial diet of red palm weevil larvae. All extracts showed dose-dependent insecticidal activity to the tested eighth-instar red palm weevil larvae...
March 21, 2017: Neotropical Entomology
https://www.readbyqxmd.com/read/28326460/on-the-adult-behavioral-repertoire-of-the-sawfly-perreyia-flavipes-konow-1899-hymenoptera-pergidae-movement-mating-and-thanatosis
#14
F M Neves, M R Pie
Perreyia flavipes Konow, 1899 (Pergidae: Perreyinae) is a sawfly species with gregarious larvae commonly found in open areas in southern Brazil through Uruguay and northern Argentina. The combination of highly gregarious larvae with the production of a variety of toxins in P. flavipes has led to severe cases of intoxication in a variety of livestock species. Over the years, considerable information was discovered on the larval natural history of P. flavipes; however, virtually nothing is known about the adult behavior, particularly because of its short life-span...
March 21, 2017: Neotropical Entomology
https://www.readbyqxmd.com/read/28326431/effects-of-a-supraseasonal-drought-on-the-ecological-attributes-of-plagioscion-squamosissimus-heckel-1840-pisces-sciaenidae-in-a-brazilian-reservoir
#15
Antonia E F Souza, Jônnata F Oliveira, Danielle Peretti, Rodrigo Fernandes, Rodrigo S Costa, José Luis Costa Novaes
The aim of this study was to evaluate the effect of a supraseasonal drought on the ecological attributes of Plagioscion squamosissimus. The fish were caught quarterly from February 2010 to November 2014 using gill nets in the reservoir of Santa Cruz, Rio Grande do Norte, Brazil. The abundance of the species was evaluated with the catch per unit effort (CPUE) metric and then correlated with the accumulated rainfall and water volume of the reservoir. The diet of the fish was evaluated using the feeding index (IAi)...
2017: TheScientificWorldJournal
https://www.readbyqxmd.com/read/28325980/baby-killers-documentation-and-evolution-of-scuttle-fly-diptera-phoridae-parasitism-of-ant-hymenoptera-formicidae-brood
#16
Brian V Brown, John M Hash, Emily A Hartop, Wendy Porras, Dalton de Souza Amorim
BACKGROUND: Numerous well-documented associations occur among species of scuttle flies (Diptera: Phoridae) and ants (Hymenoptera: Formicidae), but examples of brood parasitism are rare and the mechanisms of parasitism often remain unsubstantiated. NEW INFORMATION: We present two video-documented examples of ant brood (larvae and pupae) parasitism by scuttle flies. In footage from Estação Biológica de Boracéia in Brazil, adult females of Ceratoconus setipennis Borgmeier can be seen attacking workers of Linepithema humile (Mayr) species group while they are carrying brood, and ovipositing directly onto brood in the nest...
2017: Biodiversity Data Journal
https://www.readbyqxmd.com/read/28325964/a-review-of-insect-parasitoids-associated-with-lobesia-botrana-denis-schifferm%C3%A3-ller-1775-in-italy-1-dipteratachinidae-and-hymenopterabraconidae-lepidoptera-tortricidae
#17
Pier Luigi Scaramozzino, Augusto Loni, Andrea Lucchi
This paper is aimed to summarize the information available on the parasitoid complex of the European Grapevine Moth (EGVM), Lobesia botrana (Denis & Schiffermüller, 1775) (Lepidoptera Tortricidae) in Italy. The list is the result of the consultation of a vast bibliography published in Italy for almost two hundred years, from 1828 to date. This allowed the clarification and correction of misunderstandings and mistakes on the taxonomic position of each species listed. In Italy the complex of parasitoids detected on EGVM includes approximately 90 species belonging to ten families of Hymenoptera (Braconidae, Ichneumonidae, Chalcididae, Eulophidae, Eupelmidae, Eurytomidae, Pteromalidae, Torymidae, Trichogrammatidae, and Bethylidae) and one family of Diptera (Tachinidae)...
2017: ZooKeys
https://www.readbyqxmd.com/read/28325642/an-italian-case-of-intestinal-anisakiasis-with-a-presurgical-diagnosis-could-this-parasite-represent-an-emerging-disease
#18
Magda Zanelli, Moira Ragazzi, Sirio Fiorino, Moira Foroni, Paolo Cecinato, Maria Del Mar Jordana Sanchez, Stefano Ascani, Loredana De Marco
Anisakiasis is a parasitic infection caused by the consumption of raw fish containing larvae of the Anisakis species. Since the first description in 1960 of a patient suffering from this pathogen, in the Netherlands, most of the cases have been reported in Japan, where consumption of raw fish is common, but the number of cases is increasing worldwide. The first case identified in Italy dates back to 1996 and a few cases have been reported since then. In Italy the intestinal form occurs almost as frequently as the gastric form, which is far more frequent in Japan...
February 16, 2017: Pathology, Research and Practice
https://www.readbyqxmd.com/read/28325173/patterns-and-processes-influencing-helminth-parasites-of-arctic-coastal-communities-during-climate-change
#19
K V Galaktionov
This review analyses the scarce available data on biodiversity and transmission of helminths in Arctic coastal ecosystems and the potential impact of climate changes on them. The focus is on the helminths of seabirds, dominant parasites in coastal ecosystems. Their fauna in the Arctic is depauperate because of the lack of suitable intermediate hosts and unfavourable conditions for species with free-living larvae. An increasing proportion of crustaceans in the diet of Arctic seabirds would result in a higher infection intensity of cestodes and acanthocephalans, and may also promote the infection of seabirds with non-specific helminths...
March 22, 2017: Journal of Helminthology
https://www.readbyqxmd.com/read/28325121/dna-extraction-and-barcode-identification-of-development-stages-of-forensically-important-flies-in-the-czech-republic
#20
Tereza Olekšáková, Martina Žurovcová, Vanda Klimešová, Miroslav Barták, Hana Šuláková
Several methods of DNA extraction, coupled with 'DNA barcoding' species identification, were compared using specimens from early developmental stages of forensically important flies from the Calliphoridae and Sarcophagidae families. DNA was extracted at three immature stages - eggs, the first instar larvae, and empty pupal cases (puparia) - using four different extraction methods, namely, one simple 'homemade' extraction buffer protocol and three commercial kits. The extraction conditions, including the amount of proteinase K and incubation times, were optimized...
March 21, 2017: Mitochondrial DNA. Part A. DNA Mapping, Sequencing, and Analysis
keyword
keyword
83272
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"