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https://www.readbyqxmd.com/read/28108174/experimental-infection-of-octopus-vulgaris-cuvier-1797-with-photobacterium-damsela-subsp-piscicida-immunohistochemical-tracking-of-antigen-and-tissue-responses
#1
Vasileios Bakopoulos, Daniella White, Michail-Aggelos Valsamidis, Feli Vasilaki
Adult common octopus individuals were intramuscularly infected with Photobacterium damsela subsp. piscicida in order to investigate if this species is sensitive to this common and important fish pathogen. The fate of the bacterial antigens and the tissue responses of Octopus vulgaris were studied employing immunohistochemical techniques. Strong reaction at the site of injection was evident from day 2 post-infection that continued until day 14. Great numbers of hemocytes that were attracted at the site of infection were involved in phagocytosis of bacteria...
January 17, 2017: Journal of Invertebrate Pathology
https://www.readbyqxmd.com/read/28073394/gregarine-infection-accelerates-larval-development-of-the-cat-flea-ctenocephalides-felis-bouch%C3%A3
#2
M E Alarcón, A Jara-F, R C Briones, A K Dubey, C H Slamovits
A high degree of specialization between host and parasite is a well-known outcome of a long history of coevolution, and it is strikingly illustrated in a coordination of their life cycles. In some cases, the arms race ensued at the establishment of a symbiotic relationship results in the adoption of manipulative strategies by the parasite. We have already learned that Steinina ctenocephali, a gregarine living in the alimentary canal of cat flea, Ctenocephalides felis follows its phenology and metamorphosis...
January 11, 2017: Parasitology
https://www.readbyqxmd.com/read/28068378/mesopredator-management-effects-of-red-fox-control-on-the-abundance-diet-and-use-of-space-by-feral-cats
#3
Robyn Molsher, Alan E Newsome, Thomas M Newsome, Christopher R Dickman
Apex predators are subject to lethal control in many parts of the world to minimize their impacts on human industries and livelihoods. Diverse communities of smaller predators-mesopredators-often remain after apex predator removal. Despite concern that these mesopredators may be 'released' in the absence of the apex predator and exert negative effects on each other and on co-occurring prey, these interactions have been little studied. Here, we investigate the potential effects of competition and intraguild predation between red foxes (Vulpes vulpes) and feral cats (Felis catus) in south-eastern Australia where the apex predator, the dingo (Canis dingo), has been extirpated by humans...
2017: PloS One
https://www.readbyqxmd.com/read/28068343/the-fleas-siphonaptera-in-iran-diversity-host-range-and-medical-importance
#4
Naseh Maleki-Ravasan, Samaneh Solhjouy-Fard, Jean-Claude Beaucournu, Anne Laudisoit, Ehsan Mostafavi
BACKGROUND: Flea-borne diseases have a wide distribution in the world. Studies on the identity, abundance, distribution and seasonality of the potential vectors of pathogenic agents (e.g. Yersinia pestis, Francisella tularensis, and Rickettsia felis) are necessary tools for controlling and preventing such diseases outbreaks. The improvements of diagnostic tools are partly responsible for an easier detection of otherwise unnoticed agents in the ectoparasitic fauna and as such a good taxonomical knowledge of the potential vectors is crucial...
January 2017: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/28043384/initial-evaluations-of-the-effectiveness-of-spinetoram-as-a-long-acting-oral-systemic-pulicide-for-controlling-cat-flea-ctenocephalides-felis-infestations-on-dogs
#5
W Hunter White, Kari L Riggs, Michelle L Totten, Daniel E Snyder, Christine M McCoy, David R Young
Spinetoram is a semi-synthetic, spinosyn class natural product derived from fermentation by the actinomycete, Saccharopolyspora spinosa. Based on LD50 (50% lethal dose) values against adult cat fleas (Ctenocephalides felis) using an in vitro contact assay, spinetoram was approximately 4-fold more potent than spinosad. Subsequently, two parallel-arm, randomized block design laboratory studies were conducted to evaluate the effectiveness of orally administered spinetoram against experimental C. felis infestations on dogs, when administered as a single dose or multiple doses over a 6-12h interval...
January 15, 2017: Veterinary Parasitology
https://www.readbyqxmd.com/read/28043379/use-of-a-commercial-serologic-test-for-angiostrongylus-vasorum-for-the-detection-of-a-chabaudi-in-wildcats-and-a-daskalovi-in-badgers
#6
Georgiana Deak, Călin Mircea Gherman, Angela Monica Ionică, Aikaterini Alexandra Daskalaki, Ioana Adriana Matei, Gianluca D'Amico, Cristian Domşa, Nikola Pantchev, Andrei Daniel Mihalca, Vasile Cozma
Three species of the genus Angiostrongylus are known to infect European carnivores: A. vasorum (mainly in canids but also in other carnivores), A. chabaudi (in felids) and A. daskalovi (in mustelids). A. vasorum is responsible for clinically severe disease in domestic dogs, most commonly diagnosed based on fecal examination and serological detection of circulating antigens. Considering the poorly known host range and the challenging larval differentiation in the feces between the three species of Angiostrongylus infecting European carnivores, our aim was to evaluate the cross-reactivity of A...
January 15, 2017: Veterinary Parasitology
https://www.readbyqxmd.com/read/28031350/a-molecular-survey-for-francisella-tularensis-and-rickettsia-spp-in-haemaphysalis-leporispalustris-acari-ixodidae-in-northern-california
#7
Tara Roth, Robert S Lane, Janet Foley
Francisella tularensis and Rickettsia spp. have been cultured from Haemaphysalis leporispalustris Packard, but their prevalence in this tick has not been determined using modern molecular methods. We collected H. leporispalustris by flagging vegetation and leaf litter and from lagomorphs (Lepus californicus Gray and Sylvilagus bachmani (Waterhouse)) in northern California. Francisella tularensis DNA was not detected in any of 1,030 ticks tested by polymerase chain reaction (PCR), whereas 0.4% of larvae tested in pools, 0 of 117 individual nymphs, and 2...
December 28, 2016: Journal of Medical Entomology
https://www.readbyqxmd.com/read/28011733/intrinsic-activity-of-igrs-against-larval-cat-fleas
#8
Michael K Rust, W Lance H Hemsarth
Insect growth regulators (IGRs) such as lufenuron, methoprene, and pyriproxyfen have been important tools in the integrated pest management of cat fleas, Ctenocephalides felis (Bouché), for the past two decades. Other IGRs have been registered for the control of termite, dipteran, and lepidopterous pests including chlorfluazuron, cyromazine, dicyclanil, and precocene I, but have been not tested against C. felis The intrinsic activity of IGRs was determined by exposing larvae to treated larval rearing media...
December 22, 2016: Journal of Medical Entomology
https://www.readbyqxmd.com/read/28011042/glial-changes-and-evidence-for-apoptosis-in-the-brain-of-cats-infected-by-cytauxzoon-felis
#9
L L Clarke, P M Krimer, D R Rissi
Ischaemic neuropathological changes associated with Cytauxzoon felis infection in cats have been reported recently. This paper describes the associated glial changes and the evidence for apoptosis in the brain of cats infected naturally by C. felis. Sections of brain from eight affected cats and eight age- and sex-matched control cats were evaluated by immunohistochemistry for expression of glial fibrillary acidic protein, CD18 and cleaved caspase-3. Vascular changes in the leptomeninges and parenchyma, the number of positive astrocytes and phagocytic cells (microglia or macrophages) and the average astrocytic cytoplasmic area and number and length of astrocytic processes were quantified, and a mean value for the grey and white matter in both groups was generated...
December 20, 2016: Journal of Comparative Pathology
https://www.readbyqxmd.com/read/28007314/interspecies-discrimination-of-a-fumigatus-and-siblings-a-lentulus-and-a-felis-of-the-aspergillus-section-fumigati-using-the-aspergenius-%C3%A2-assay
#10
G M Chong, A G Vonk, J F Meis, G J H Dingemans, J Houbraken, F Hagen, G R Gaajetaan, D W E van Tegelen, G F M Simons, B J A Rijnders
The AsperGenius(®) assay detects several Aspergillus species and the A. fumigatus Cyp51A mutations TR34/L98H/T289A/Y121F that are associated with azole resistance. We evaluated its contribution in identifying A. lentulus and A. felis, 2 rare but intrinsically azole-resistant sibling species within the Aspergillus section Fumigati. Identification of these species with conventional culture techniques is difficult and time-consuming. The assay was tested on (i) 2 A. lentulus and A. felis strains obtained from biopsy proven invasive aspergillosis and (ii) control A...
December 5, 2016: Diagnostic Microbiology and Infectious Disease
https://www.readbyqxmd.com/read/27991415/assessment-of-the-efficacy-of-a-topical-combination-of-fipronil-permethrin-frontline-tri-act-%C3%A2-frontect-%C3%A2-against-egg-laying-and-adult-emergence-of-the-cat-flea-ctenocephalides-felis-in-dogs
#11
Frédéric Beugnet, Lénaïg Halos, Wilfried Lebon, Julian Liebenberg
This study was conducted to assess the prevention of egg laying and the inhibition of the emergence of the cat flea (Ctenocephalides felis) resulting from the application of a combination of fipronil and permethrin (Frontline Tri-Act(®)/Frontect(®), Merial) on dogs. Sixteen healthy dogs were included after pre-treatment live flea counts and randomly allocated to two groups. Eight dogs served as untreated controls and 8 dogs were treated on Day 0 and Day 30 with topical application of fipronil/permethrin at the minimum dose of 6...
2016: Parasite: Journal de la Société Française de Parasitologie
https://www.readbyqxmd.com/read/27986544/-candidatus-rickettsia-asemboensis-in-rhipicephalus-sanguineus-ticks-brazil
#12
Bruno Dall'Agnol, Ugo Souza, Anelise Webster, Bárbara Weck, Bárbara Stenzel, Marcelo Labruna, Guilherme Klafke, João Ricardo Martins, Carlos Alexandre Sanchez Ferreira, José Reck
"Candidatus Rickettsia asemboensis" is an obligate intracellular bacterium of the Rickettsiales order, genetically related to species belonging to the Rickettsia felis group, agents of flea-borne spotted fever. Here we report for the first time the detection of "Ca. R. asemboensis", a flea-associated organism, in Rhipicephalus sanguineus ticks. It is the first occurrence of this emerging bacterium in Brazil, which increases the geographical distribution of this R. felis-like agent.
December 13, 2016: Acta Tropica
https://www.readbyqxmd.com/read/27981678/bilateral-pre-auricular-papillary-squamous-cell-carcinomas-associated-with-papillomavirus-infection-in-a-domestic-cat
#13
John S Munday, Stacy Gwyther, Neroli A Thomson, Richard Malik
BACKGROUND: Cutaneous papillary squamous cell carcinomas (SCCs) are extremely rare in humans and have not been reported in any nonhuman species. In humans, oral papillary SCCs are often caused by papillomavirus infection and have a more favourable prognosis than other SCC subtypes. CASE: A 10-year-old ginger and white domestic short hair cat had a 12 month history of symmetrical, roughly circular, exophytic 2 cm diameter masses in both pre-auricular regions. Surgical excision was performed, although with only narrow margins...
December 15, 2016: Veterinary Dermatology
https://www.readbyqxmd.com/read/27979940/draft-genome-sequence-of-enterococcus-faecalis-strain-ucd-pd3
#14
Dana R De Vries, Alexandra L Martin, Holly H Ganz, Jonathan A Eisen, David A Coil
Here, we present the draft genome sequence of Enterococcus faecalis strain UCD-PD3. The assembly contains 2,861,314 bp in 73 contigs. This strain was isolated from a feral domestic cat (Felis catus) anal sac secretion sample, as part of a project on isolating and characterizing the microbes present in feline anal sacs.
December 15, 2016: Genome Announcements
https://www.readbyqxmd.com/read/27938443/hepatozoon-silvestris-sp-nov-morphological-and-molecular-characterization-of-a-new-species-of-hepatozoon-adeleorina-hepatozoidae-from-the-european-wild-cat-felis-silvestris-silvestris
#15
Adnan Hodžić, Amer Alić, Senad Prašović, Domenico Otranto, Gad Baneth, Georg Gerhard Duscher
Based on morphological and genetic characteristics, we describe a new species of Hepatozoon in the European wild cat (Felis silvestris silvestris), herein named Hepatozoon silvestris sp. nov. The study also provides the first data on the occurrence of H. felis in this wild felid. Hepatozoon meronts were observed in multiple cross-sections of different organs of four (44%) cats. Additionally, extracellular forms, resembling mature gamonts of Hepatozoon, were found in the spleen and myocardium of two cats. Furthermore, tissues of six animals (67%) were positive by PCR...
December 12, 2016: Parasitology
https://www.readbyqxmd.com/read/27938422/detection-and-molecular-identification-of-hepatozoon-canis-and-babesia-vogeli-from-domestic-dogs-in-palestine
#16
Kifaya Azmi, Amer Al-Jawabreh, Abedelmajeed Nasereddin, Ahmad Abdelkader, Taher Zaid, Suheir Ereqat, Samer S Sawalha, Gad Baneth, Ziad Abdeen
Dogs serve as hosts for a great number of parasites, which may affect their health and wellbeing. This study aimed to observe tick borne pathogens in dogs from Palestine including Hepatozoon canis and Babesia species. The prevalence of both H. canis and Babesia species infections in apparently healthy dogs, from ten districts of the West Bank was surveyed. DNA was extracted from blood samples obtained from dogs (n = 362) and ticks (n = 213) collected from dogs (n = 77). A primer set that amplifies a partial sequence of the Babesia and Hepatozoon 18S rRNA gene was used for PCR and the DNA sequences of the PCR products of all samples were determined...
December 12, 2016: Parasitology
https://www.readbyqxmd.com/read/27933665/detection-of-dna-sequences-from-a-novel-papillomavirus-in-a-feline-basal-cell-carcinoma
#17
John S Munday, Adrienne French, Neroli Thomson
BACKGROUND: Basal cell carcinomas (BCCs) are uncommon feline skin neoplasms of uncertain cause. CASE: A 14-year-old Abyssinian cat developed a soft dermal nodule on the dorsal thorax. This mass grew slowly over a six month period before being surgically excised. METHODS AND RESULTS: Histology revealed a BCC. Additionally, changes suggestive of an early Bowenoid in situ carcinoma (BISC) were present in the overlying epidermis. Both the BCC and the BISC contained papillomavirus-induced cell changes and prominent basophilic intracytoplasmic bodies...
December 8, 2016: Veterinary Dermatology
https://www.readbyqxmd.com/read/27925064/does-hair-coat-length-affect-flea-infestation-in-naturally-infested-dogs
#18
Guilherme Araujo Collares da Silva, Luciana Araujo Lins, Márcio Josué Costa Irala, Marcial Corrêa Cárcamo, Paulo Bretanha Ribeiro
The Siphonaptera are parasitic insects of endothermic animals and Ctenocephalides felis and Pulex irritans are important parasites of dogs. This study evaluated the effect of hair coat length and time of year on the population size of C. felis and P. irritans in naturally infested dogs. Fleas were collected from 14 dogs on a monthly basis for a year (February 2015 to January 2016) at a rural property in Bagé, Rio Grande do Sul, Brazil. The dogs were divided into two groups based on hair coat length: short coat (coat length < 5...
October 2016: Revista Brasileira de Parasitologia Veterinária, Brazilian Journal of Veterinary Parasitology
https://www.readbyqxmd.com/read/27919727/patent-ductus-arteriosus-in-cats-felis-catus-50-cases-2000-2015
#19
A Bascuñán, K M Thieman Mankin, A B Saunders, J M Bright, V Scharf, A Singh, L O'Sullivan, B Brisson, A H Estrada, S P Tou, C Ruoff
OBJECTIVES: To describe signalment, clinical characteristics, diagnostic, treatment, and outcome data in a large case series of cats with patent ductus arteriosus (PDA). ANIMALS: Fifty cats with confirmed PDA. METHODS: Retrospective review of medical records from five referral veterinary hospitals for cats with PDA between 2000 and 2015. Cats were included if a PDA was visualized echocardiographically, during surgery, or on post-mortem examination...
December 2, 2016: Journal of Veterinary Cardiology: the Official Journal of the European Society of Veterinary Cardiology
https://www.readbyqxmd.com/read/27905152/the-effect-of-cumulus-cells-on-domestic-cat-felis-catus-oocytes-during-in-vitro-maturation-and-fertilization
#20
N Sowińska, K Frankowska, A Filipczyk, A Adamaszek, K Nalik, K Fic, A Pietsch-Fulbiszewska
The aim of this study was to evaluate the effect of co-culture of denuded oocytes with cumulus cells (CC) or cumulus-oocyte complexes (COCs) on in vitro maturation (IVM) and in vitro fertilization (IVF). Immature oocytes were collected from ovaries of domestic cats following a routine ovariectomy. Oocytes were matured in vitro for 24 hr within four groups: (i) denuded oocytes (DO), (ii) DO co-cultured with CC, (iii) DO co-cultured with COC and (iv) COC as a control group. In further experiments, COCs were matured in vitro for 24 hr, and then, oocytes were randomly divided into four groups as previously described and fertilized in vitro...
November 30, 2016: Reproduction in Domestic Animals, Zuchthygiene
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