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https://www.readbyqxmd.com/read/29786148/ecotoxicological-assessment-of-immersion-samples-from-fa%C3%A3-ade-render-containing-free-or-encapsulated-biocides
#1
Etiënne L M Vermeirssen, Sophie Campiche, Conrad Dietschweiler, Inge Werner, Michael Burkhardt
To protect house façades from fouling by microorganisms, biocides can be added to a render or paint before it is applied. During driving rain events, these biocides gradually leach out and have the potential to pollute soil or aquatic ecosystems. We studied the leaching behaviour of biocides and toxicity of leachates from renders with either free or encapsulated biocides. Both render types contained equal amounts of terbutryn, 2-octyl-3(2H)-isothiazolinone (OIT) and 4,5-dichloro-2-n-octyl-4-isothiazolino-3-one (DCOIT)...
May 22, 2018: Environmental Toxicology and Chemistry
https://www.readbyqxmd.com/read/29785892/the-monogenean-paradiplozoon-ichthyoxanthon-behaves-like-a-micropredator-on-two-of-its-hosts-as-indicated-by-stable-isotopes
#2
B Sures, M Nachev, B M Gilbert, Q M Dos Santos, M A Jochmann, D Köster, T C Schmidt, A Avenant-Oldewage
The analysis of stable isotopes of carbon and nitrogen has been used as a fingerprint for understanding the trophic interactions of organisms. Most of these studies have been applied to free-living organisms, while parasites have largely been neglected. Studies dealing with parasites so far have assessed the carbon and nitrogen signatures in endoparasites or ectoparasites of different hosts, without showing general trends concerning the nutritional relationships within host-parasite associations. Moreover, in most cases such systems involved a single host and parasite species...
May 22, 2018: Journal of Helminthology
https://www.readbyqxmd.com/read/29757526/drivers-of-flea-siphonaptera-community-structure-in-sympatric-wild-carnivores-in-northwestern-mexico
#3
Andrés M López-Pérez, Kenneth Gage, Andre V Rubio, John Montenieri, Libertad Orozco, Gerardo Suzan
Host identity, habitat type, season, and interspecific interactions were investigated as determinants of the community structure of fleas on wild carnivores in northwestern Mexico. A total of 540 fleas belonging to seven species was collected from 64 wild carnivores belonging to eight species. We found that the abundances of some flea species are explained by season and host identity. Pulex irritans and Echidnophaga gallinacea abundances were significantly higher in spring than in fall season. Flea communities on carnivore hosts revealed three clusters with a high degree of similarity within each group that was explained by the flea dominance of E...
June 2018: Journal of Vector Ecology: Journal of the Society for Vector Ecology
https://www.readbyqxmd.com/read/29746259/epigenetic-fleas-bite-the-genome-in-bone-health-muscle-strength-the-gut-heart-health-and-during-ketogenesis
#4
George Grimble
No abstract text is available yet for this article.
May 8, 2018: Current Opinion in Clinical Nutrition and Metabolic Care
https://www.readbyqxmd.com/read/29744628/impact-of-sylvatic-plague-vaccine-on-non-target-small-rodents-in-grassland-ecosystems
#5
Gebbiena M Bron, Katherine L D Richgels, Michael D Samuel, Julia E Poje, Faye Lorenzsonn, Jonathan P Matteson, Jesse T Boulerice, Jorge E Osorio, Tonie E Rocke
Oral vaccination is an emerging management strategy to reduce the prevalence of high impact infectious diseases within wild animal populations. Plague is a flea-borne zoonosis of rodents that often decimates prairie dog (Cynomys spp.) colonies in the western USA. Recently, an oral sylvatic plague vaccine (SPV) was developed to protect prairie dogs from plague and aid recovery of the endangered black-footed ferret (Mustela nigripes). Although oral vaccination programs are targeted toward specific species, field distribution of vaccine-laden baits can result in vaccine uptake by non-target animals and unintended indirect effects...
May 9, 2018: EcoHealth
https://www.readbyqxmd.com/read/29741710/response-to-short-term-cold-storage-for-eggs-of-agasicles-hygrophila-coleoptera-chrysomelidae-a-biological-control-agent-of-alligator-weed-alternanthera-philoxeroides-caryophyllales-amaranthaceae
#6
Yan-Hong Liu, Dong Jia, Xiao-Fang Yuan, Yuan-Xin Wang, Hsin Chi, Thomas James Ridsdill-Smith, Rui-Yan Ma
The alligator weed flea beetle, Agasicles hygrophila Selman & Vogt (Coleoptera: Chrysomelidae) has been used very successfully for the biological control of the widely-distributed invasive weed Alternanthera philoxeroides (Mart.) Griseb (Caryophyllales: Amaranthaceae). In order to extend the 'shelf life' of natural enemies released in biological control programs, cold storage has proven to be a valuable commercial procedure. To determine a suitable low temperature for storage of A. hygrophila, we conducted short-term cold storage treatments of eggs (4°C for 0...
May 8, 2018: Journal of Economic Entomology
https://www.readbyqxmd.com/read/29738738/the-latitudinal-but-not-the-longitudinal-geographic-range-positions-of-haematophagous-ectoparasites-demonstrate-historical-signatures
#7
Boris R Krasnov, Georgy I Shenbrot, Luther van der Mescht, Elizabeth M Warburton, Irina S Khokhlova
We tested whether geographic range position of fleas parasitic on small mammals in the Palearctic is affected by environmental niche conservatism or geographic range conservatism by measuring phylogenetic signal in range centroids and boundaries. We predicted that stronger phylogenetic signal in latitudinal than longitudinal range positions would indicate the important role of niche conservatism as a driver of the evolution of fleas' geographic ranges. Phylogenetic signals in geographic range positions were measured across 120 species, as well as within five flea lineages (subfamily/family rank) of different evolutionary ages...
May 5, 2018: International Journal for Parasitology
https://www.readbyqxmd.com/read/29736763/serum-cytokine-responses-in-rickettsia-felis-infected-febrile-children-ghana
#8
Jessica Rauch, Peter Sothmann, Cassandra Aldrich, Ben Hogan, Ellis Owusu-Dabo, Jürgen May, Daniel Eibach, Dennis Tappe
The intracellular pathogen Rickettsia felis causes flea-borne spotted fever and is increasingly recognized as an emerging cause of febrile illness in Africa, where co-infection with Plasmodium falciparum is common. Rickettsiae invade endothelial cells. Little is known, however, about the early immune responses to infection. In this study, we characterize for the first time the cytokine profile in the acute phase of illness caused by R. felis infection, as well as in plasmodial co-infection, using serum from 23 febrile children < 15 years of age and 20 age-matched healthy controls from Ghana...
May 8, 2018: Medical Microbiology and Immunology
https://www.readbyqxmd.com/read/29736361/tungiasis-presenting-as-onychomycosis-probably-the-first-report-of-flea-infestation-of-the-nail-observed-using-modified-potassium-hydroxide-mount-technique
#9
Venkataramana Kandi
Tungiasis is an infection/infestation of the flea Tunga penetrans . These are bloodsucking ectoparasitic insects belonging to the phylum Arthropoda, and they do not possess wings, but they have long legs enabling them to jump up to 30 cm high. The fleas are usually present on the skin and in the hair of domestic and wild animals and are prevalent throughout the world. They may also be present in an environment consisting of dry sandy soils, and they infect people who walk barefoot and reside in flea-infested areas...
March 5, 2018: Curēus
https://www.readbyqxmd.com/read/29728431/a-miraculous-recovery-bartonella-henselae-infection-following-a-red-ant-bite
#10
Pramod K Guru, Anjali Agarwal, Ashley Fritz
Infections caused by the Bartonella species are responsible for the human diseases collectively called 'bartonellosis'. The clinically important human infections are mostly caused by the three species (eg, B. bacilliformis, B. quintana and B. henselae ) of Bartonella out of the many progressively increasing identified species. Bartonella henselae transmitted by the arthropod vector, fleas, after cat bite is responsible for the rare multisystem cat scratch disease in humans. We present an extremely rare case of B...
May 4, 2018: BMJ Case Reports
https://www.readbyqxmd.com/read/29723100/resistance-to-deltamethrin-in-prairie-dog-cynomys-ludovicianus-fleas-in-the-field-and-in-the-laboratory
#11
David A Eads, Dean E Biggins, Jonathan Bowser, Janet C McAllister, Randall L Griebel, Eddie Childers, Travis M Livieri, Cristi Painter, Lindsey Sterling Krank, Kristy Bly
Sylvatic plague poses a substantial risk to black-tailed prairie dogs ( Cynomys ludovicianus) and their obligate predator, the black-footed ferret ( Mustela nigripes). The effects of plague on prairie dogs and ferrets are mitigated using a deltamethrin pulicide dust that reduces the spread of plague by killing fleas, the vector for the plague bacterium. In portions of Conata Basin, Buffalo Gap National Grasslands, and Badlands National Park, South Dakota, 0.05% deltamethrin has been infused into prairie dog burrows on an annual basis since 2005...
May 3, 2018: Journal of Wildlife Diseases
https://www.readbyqxmd.com/read/29722798/stochastic-processes-govern-bacterial-communities-from-the-blood-of-pikas-and-from-their-arthropod-vectors
#12
Huan Li, Tongtong Li, Jiapeng Qu
Vector-borne microbes influence pathogen transmission and blood microbiomes, thereby affecting the emergence of infectious diseases. Thus, understanding the relationship between host and vector microbiomes is of importance. In this study, we investigated the bacterial community composition, diversity and assembly of the flea (Rhadinopsylla dahurica vicina), torsalo (Hypoderma curzonial), and the blood and gut of their shared pika host, Ochotona curzoniae. Bartonella, Sphingomonas and Bradyrhizobium were enriched in blood, while Wolbachia and Fusobacterium were more abundant in fleas and torsaloes...
May 2, 2018: FEMS Microbiology Ecology
https://www.readbyqxmd.com/read/29718583/targeted-gene-disruption-by-use-of-crispr-cas9-ribonucleoprotein-complexes-in-the-water-flea-daphnia-pulex
#13
Chizue Hiruta, Keiichi Kakui, Knut E Tollefsen, Taisen Iguchi
The microcrustacean Daphnia pulex is an important model for environmental, ecological, evolutionary and developmental genomics because its adaptive life history displays plasticity in response to environmental changes. Even though the whole-genome sequence is available and omics data have actively accumulated for this species, the available tools for analyzing gene function have thus far been limited to RNAi (RNA interference) and TALEN (the transcription activator-like effector nuclease) systems. The development of the CRISPR/Cas9 (clustered regularly interspaced short palindromic repeats/CRISPR-associated 9) system is thus expected to further increase the genetic tractability of D...
May 2, 2018: Genes to Cells: Devoted to Molecular & Cellular Mechanisms
https://www.readbyqxmd.com/read/29700713/acute-and-chronic-effects-of-exposure-to-the-juvenile-hormone-analog-fenoxycarb-during-sexual-reproduction-in-daphnia-magna
#14
Sabine Navis, Aline Waterkeyn, Luc De Meester, Luc Brendonck
Recent studies have demonstrated that insect growth regulating insecticides are able to affect reproductive endpoints in zooplankton species at very low levels. For the cyclic parthenogenetic water flea Daphnia, most of this research has focused on the asexual part of the life cycle and induction of male offspring. Even though Daphnia and many other aquatic invertebrates rely on sexual reproduction and subsequent production of dormant eggs to recover from environmentally harsh conditions, much less is known about the effects of toxicants on the sexual reproductive phase...
April 26, 2018: Ecotoxicology
https://www.readbyqxmd.com/read/29700709/the-deer-mouse-peromyscus-maniculatus-as-an-enzootic-reservoir-of-plague-in-california
#15
Mary Danforth, James Tucker, Mark Novak
It has long been theorized that deer mice (Peromyscus maniculatus) are a primary reservoir of Yersinia pestis in California. However, recent research from other parts of the western USA has implicated deer mice as spillover hosts during epizootic plague transmission. This retrospective study analyzed deer mouse data collected for plague surveillance by public health agencies in California from 1971 to 2016 to help elucidate the role of deer mice in plague transmission. The fleas most commonly found on deer mice were poor vectors of Y...
April 26, 2018: EcoHealth
https://www.readbyqxmd.com/read/29690303/species-diversity-and-phylogeny-of-fleas-of-small-terrestrial-mammals-in-the-forests-of-the-central-highlands-of-madagascar
#16
Mireille Harimalala, AdelaÏde Miarinjara, Jean-Bernard Duchemin, Tojo Ramihangihajason, Sebastien Boyer
Fleas are holometabolous insects forming the order of Siphonaptera. Some studies have been carried out on biology and systematic of Malagasy fleas, but little is known about their phylogenetic relationships. In this study, we focused on flea species occurring in the forests of the Central Highlands and also, on the determination of their phylogenetic relationships. Three families, five genera and thirteen species were identified. The family Pulicidae includes four species (Centetipsylla madagascariensis Rothschild, Synopsyllus fonquerniei Wagner Roubaud, S...
March 21, 2018: Zootaxa
https://www.readbyqxmd.com/read/29690252/new-contributions-to-the-knowledge-of-chinese-flea-beetle-fauna-iii-revision-of-meishania-chen-wang-with-description-of-five-new-species-coleoptera-chrysomelidae-galerucinae
#17
Yongying Ruan, Alexander S Konstantinov, K D Prathapan, Mengna Zhang, Shihong Jiang, Xingke Yang
The flea beetle genus Meishania Chen Wang is revised and five new species-M. cangshanensis sp. nov., M. flavipennis sp. nov., M. fulvotigera sp. nov., and M. sichuanica sp. nov. from China and M. bhutanensis sp. nov. from Bhutan-are described. All species of Meishania are illustrated and a key to species is provided.
April 3, 2018: Zootaxa
https://www.readbyqxmd.com/read/29689818/fleas-insecta-siphonaptera-with-public-health-relevance-in-domestic-pigs-artiodactyla-suidae-from-argentina
#18
Juliana Patricia Sanchez, MarÍa Cecilia Ezquiaga, Melanie Ruiz
The presence of fleas can have a great negative impact on the productivity and well-being of the animals, and can contribute towards propagation of causative pathogens of important diseases in animals and humans. Fleas and domestic pigs (Sus scrofa Linnaeus, 1758) are a known association. However, knowledge about fleas on pigs in Argentina is scarce. In this country, swine farming has become one of the main components of livestock production. This activity is primarily carried out by smallholder farmers, involving a potential risk to humans of acquiring pathogens...
January 17, 2018: Zootaxa
https://www.readbyqxmd.com/read/29683400/molecular-evidence-of-rickettsia-in-human-and-dog-blood-in-bangkok
#19
Nanthanida Mongkol, Yupin Suputtamongkol, Piyanan Taweethavonsawat, Suporn Foongladda
Rickettsia spp. has been detected in dog fleas in Bangkok, Thailand. With the intent of collecting evidence to confirm the presence of rickettsioses in dogs and to assess the level of associated potential for accidental human infection, human buffy coat from patients with fever of unknown origin (n = 168), whole blood samples from dogs (n = 353), and 19 flea groups from our dog sample population were studied during the 2012 to 2014 study period. The presence of Rickettsia was investigated by molecular detection of 23S rRNA gene of Rickettsia genus, citrate synthase (gltA) gene, and 17-kDa outer membrane gene...
April 23, 2018: Vector Borne and Zoonotic Diseases
https://www.readbyqxmd.com/read/29679836/physical-immobility-as-a-sensitive-indicator-of-hydraulic-fracturing-fluid-toxicity-towards-daphnia-magna
#20
Tamzin A Blewett, Perrine L M Delompré, Chris N Glover, Greg G Goss
The process of extracting hydrocarbon resources by hydraulic fracturing is an increasingly utilised technique worldwide, resulting in an effluent called flowback and produced water (FPW). This effluent is a complex mixture of salts, metals and organic compounds, and has been shown to be highly toxic to aquatic biota, an effect attributed mainly to its salt and organic components. However, in the current study we show that the water flea, Daphnia magna, is physically impaired by, and rendered immobile at the surface of, test waters containing FPW...
April 18, 2018: Science of the Total Environment
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