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https://www.readbyqxmd.com/read/28428134/use-of-physiological-biomarkers-in-diagnosis-along-with-field-trials-of-different-trypanisidal-drugs-in-camels-of-cholistan-desert
#1
Aneela Zameer Durrani, Zubair Bashir, Khalid Mehmood, Muhammad Avais, Haroon Akbar, Waqas Ahmad, Muhammad Azeem
The point prevalence of trypanosomiasis with different physiological biomarkers along with evaluation of the most responsive trypanosidal drug against trypanosomiasis under field conditions was studied. For this purpose a total of 300 free range camels were selected at different grazing and watering point in Cholistan desert. The study population of camels included 150 clinically suspected camels for trypanosomiasis and 150 healthy camels with normal temperature, pulse and respiration. For therapeutic trials 36 positively diagnosed animals were randomly divided into three experimental groups for therapeutic trials...
April 17, 2017: Microbial Pathogenesis
https://www.readbyqxmd.com/read/28427962/first-report-of-a-rickettsia-asembonensis-related-infecting-fleas-in-brazil
#2
Arannadia Barbosa Silva, Vinicius Figueiredo Vizzoni, Andréa Pereira Costa, Francisco Borges Costa, Jonas Moraes-Filho, Marcelo Bahia Labruna, Gilberto Salles Gazêta, Rita de Maria Seabra Nogueira
The present study was performed in a non-endemic area for spotted fever (SF) in Imperatriz microregion, state of Maranhão, Brazil. Blood samples and ectoparasites were collected from 300 dogs of the Imperatriz microregion. Canine serum samples were tested individually by indirect immunofluorescence assay (IFA), using five Rickettsia isolates from Brazil. Antibodies reactive to at least one of the five species of Rickettsia were detected in 1.6% of the dogs (5/300). These sera were considered reactive to Rickettsia rickettsii and Rickettsia amblyommatis or very closely related species...
April 17, 2017: Acta Tropica
https://www.readbyqxmd.com/read/28426403/pcr-denaturing-gradient-gel-electrophoresis-as-a-useful-method-to-identify-of-intestinal-bacteria-flora-in-haemaphysalis-flava-ticks
#3
Tian-Yin Cheng, Guo-Hua Liu
Ticks are blood-sucking ectoparasites of great medical and veterinary significance that can transmit bacteria, protozoa, fungi and viruses, causing a variety of human and animal diseases worldwide. In the present study, the intestinal bacterial flora associated with Haemaphysalis flava ticks in different developmental stages were analyzed using polymerase chain reaction (PCR) and denaturing gradient gel electrophoresis (DGGE). Eleven distinct DGGE bands were found using PCR-DGGE method. Sequences analyses indicated that they belonged to Bacillus cereus, Candidatus rickettsia, Erwinia sp...
June 1, 2017: Acta Parasitologica
https://www.readbyqxmd.com/read/28424664/spotted-fever-epidemiology-and-vector-rickettsia-host-relationship-in-rio-de-janeiro-state
#4
Diego C Montenegro, Karla Bitencourth, Stefan V de Oliveira, Ana P Borsoi, Karen M Cardoso, Maria S B Sousa, Cristina Giordano-Dias, Marinete Amorim, Nicolau M Serra-Freire, Gilberto S Gazêta, Reginaldo P Brazil
The eco-epidemiological scenario of spotted fever (SF), a tick-borne disease that affects humans and other animals in several countries around the world, was analyzed in Rio de Janeiro (RJ) State, Brazil. During the last 34 years, 990 SF cases were reported in RJ (the Brazilian state with the highest population density), including 116 cases confirmed by serology (RIFI) or PCR, among 42.39% of the municipalities with reported cases of SF. The epidemiologic dynamics of SF in RJ State are very heterogeneous in time and space, with outbreaks, high mortality rates and periods of epidemiological silence (no SF cases reported)...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28424628/branchial-pathomorphology-of-southern-bluefin-tuna-thunnus-maccoyii-castelnau-1872-infected-by-helminth-and-copepodan-parasites
#5
Mark B Adams, Craig J Hayward, Barbara F Nowak
Three metazoan parasites, a monogenean Hexostoma thynni and two species of copepods Pseudocycnus appendiculatus and Euryphorus brachypterus are known to parasitize the gills of ranched southern bluefin tuna (SBT) and other tuna species. However, there is no detailed information describing the pathological response to infection by these parasites in this species. Wild southern bluefin tuna Thunnus maccoyii (approximately 3 years of age), captured and towed to a grow-out site in the waters immediately south of Port Lincoln, South Australia were subsequently sampled (n = 10) monthly from March until August 2004 during commercial harvest operations...
2017: Frontiers in Physiology
https://www.readbyqxmd.com/read/28424344/mutualistic-cleaner-fish-maintains-high-escape-performance-despite-privileged-relationship-with-predators
#6
Simon Gingins, Dominique G Roche, Redouan Bshary
Predatory reef fishes regularly visit mutualistic cleaner fish (Labroides dimidiatus) to get their ectoparasites removed but show no interest in eating them. The concept of compensated trait loss posits that characters can be lost if a mutualistic relationship reduces the need for a given trait. Thus, selective pressures on escape performance might have relaxed in L. dimidiatus due to its privileged relationship with predators. However, the cost of failing to escape a predatory strike is extreme even if predation events on cleaners are exceptionally rare...
April 26, 2017: Proceedings. Biological Sciences
https://www.readbyqxmd.com/read/28417247/influence-of-environmental-temperature-and-humidity-on-questing-ticks-in-central-spain
#7
F Requena-García, F Cabrero-Sañudo, S Olmeda-García, Julia González, F Valcárcel
Ticks are important ectoparasites and vectors of the pathogens that cause disease in humans and animals. At a natural reserve in Ciudad Real (Spain), an uncontrollable infestation of wild animals with Hyalomma lusitanicum (Koch) has been reported by some game reserve owners. Many questions about distribution, abundance, and phenology of this tick in this area remain unanswered. The aim of this study was to determine if temperature and relative humidity affect the questing tick's activity in four species of ticks in a meso-Mediterranean area, especially that of H...
April 17, 2017: Experimental & Applied Acarology
https://www.readbyqxmd.com/read/28414262/mitey-costly-energetic-costs-of-parasite-avoidance-and-infection
#8
Lien T Luong, Collin J Horn, Taylor Brophy
Parasites reduce host fitness via perturbations to host energy allocation, growth, survival, and reproduction. Here, we investigate the independent effects of parasite exposure and infection on host metabolic rate. Our study focuses on Drosophila hydei and a naturally occurring ectoparasitic mite, Macrocheles muscaedomesticae. We use flow-through respirometry to measure the metabolic rate of flies during the period of exposure (preinfection) and during mite attachment. Flies were exposed to mites either indirectly (through a mesh screen) or directly, allowing for physical contact between the fly and the mite...
July 2017: Physiological and Biochemical Zoology: PBZ
https://www.readbyqxmd.com/read/28405368/concurrence-in-the-ability-for-lipid-synthesis-between-life-stages-in-insects
#9
Bertanne Visser, Denis S Willett, Jeffrey A Harvey, Hans T Alborn
The ability to synthesize lipids is critical for an organism's fitness; hence, metabolic pathways, underlying lipid synthesis, tend to be highly conserved. Surprisingly, the majority of parasitoids deviate from this general metabolic model by lacking the ability to convert sugars and other carbohydrates into lipids. These insects spend the first part of their life feeding and developing in or on an arthropod host, during which they can carry over a substantial amount of lipid reserves. While many parasitoid species have been tested for lipogenic ability at the adult life stage, it has remained unclear whether parasitoid larvae can synthesize lipids...
March 2017: Royal Society Open Science
https://www.readbyqxmd.com/read/28404634/mucosal-igm-antibody-with-d-mannose-affinity-in-fugu-takifugu-rubripes-is-utilized-by-a-monogenean-parasite-heterobothrium-okamotoi-for-host-recognition
#10
Kento Igarashi, Ryohei Matsunaga, Sachi Hirakawa, Sho Hosoya, Hiroaki Suetake, Kiyoshi Kikuchi, Yuzuru Suzuki, Osamu Nakamura, Toshiaki Miyadai, Satoshi Tasumi, Shigeyuki Tsutsui
How parasites recognize their definitive hosts is a mystery; however, parasitism is reportedly initiated by recognition of certain molecules on host surfaces. Fish ectoparasites make initial contact with their hosts at body surfaces, such as skin and gills, which are covered with mucosa that are similar to those of mammalian guts. Fish are among the most primitive vertebrates with immune systems that are equivalent to those in mammals, and they produce and secrete IgM into mucus. In this study, we showed that the monogenean parasite Heterobothrium okamotoi utilizes IgM to recognize its host, fugu Takifugu rubripes Oncomiracidia are infective larvae of H...
April 12, 2017: Journal of Immunology: Official Journal of the American Association of Immunologists
https://www.readbyqxmd.com/read/28402336/lock-picks-fungal-infection-facilitates-the-intrusion-of-strangers-into-ant-colonies
#11
Enikő Csata, Natalia Timuş, Magdalena Witek, Luca Pietro Casacci, Christophe Lucas, Anne-Geneviève Bagnères, Anna Sztencel-Jabłonka, Francesca Barbero, Simona Bonelli, László Rákosy, Bálint Markó
Studies investigating host-parasite systems rarely deal with multispecies interactions, and mostly explore impacts on hosts as individuals. Much less is known about the effects at colony level, when parasitism involves host organisms that form societies. We surveyed the effect of an ectoparasitic fungus, Rickia wasmannii, on kin-discrimination abilities of its host ant, Myrmica scabrinodis, identifying potential consequences at social level and subsequent changes in colony infiltration success of other organisms...
April 12, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28399289/no-detectable-insecticide-resistance-in-swallow-bugs-hemiptera-cimicidae-following-long-term-exposure-to-naled-dibrom-8
#12
Jelena Runjaic, Ian J Bellovich, Catherine E Page, Charles R Brown, Warren Booth
The swallow bug, Oeciacus vicarius Horvath, is a hematophagous ectoparasite of the cliff swallow, Petrochelidon pyrrhonota Vieillot, and is closely related to bed bugs (Cimex spp.). Evolution of insecticide resistance has been documented for bed bugs but not studied in Oeciacus. For periods of 17 and 32 yr, two cliff swallow colonies in western Nebraska were treated during the summer breeding season using the organophosphate insecticide Dibrom. Despite continual treatments, O. vicarius has been observed frequently within these colonies...
February 19, 2017: Journal of Medical Entomology
https://www.readbyqxmd.com/read/28399223/first-detection-of-the-kdr-mutation-t929i-in-head-lice-phthiraptera-pediculidae-in-schoolchildren-of-the-metropolitan-area-of-nuevo-leon-and-yucatan-mexico
#13
Gustavo Ponce-Garcia, Karina Villanueva-Segura, Gerardo Trujillo-Rodriguez, Iram P Rodriguez-Sanchez, Beatriz Lopez-Monroy, Adriana E Flores
The head louse Pediculus humanus capitis (De Geer) is a hematophagous ectoparasite that inhabits the human scalp. Infestations by this insect are commonly known as pediculosis, which is more common in younger groups. These infestations are asymptomatic; however, skin irritation from scratching occasionally may cause secondary bacterial infections. In recent years, the prevalence of pediculosis has increased in children; this increase has been attributed to louse resistance to the insecticides used as a control measure for infestation...
March 3, 2017: Journal of Medical Entomology
https://www.readbyqxmd.com/read/28395749/tradition-and-innovation-selamectin-plus-sarolaner-a-new-tool-to-control-endo-and-ectoparasites-of-cats-a-european-perspective
#14
EDITORIAL
Domenico Otranto, Susan Little
No abstract text is available yet for this article.
April 2017: Veterinary Parasitology
https://www.readbyqxmd.com/read/28388639/the-current-status-of-resistance-to-alpha-cypermethrin-ivermectin-and-amitraz-of-the-cattle-tick-rhipicephalus-microplus-in-ecuador
#15
Richar Rodríguez-Hidalgo, Ximena Pérez-Otáñez, Sandra Garcés-Carrera, Sophie O Vanwambeke, Maxime Madder, Washington Benítez-Ortiz
Rhipicephalus microplus is widely distributed in tropical and subtropical areas of the world where livestock is a principal activity with great veterinary and economic importance. In Ecuador, this hematophagous ectoparasite has been observed between 0 and 2600 masl. One of the main tick control measures is the use of acaricides, which have been indiscriminately used worldwide and in Ecuador. In this country, no studies on acaricide resistance in Rhipicephalus microplus have been published. The current study aims to characterise the level of resistance of R...
2017: PloS One
https://www.readbyqxmd.com/read/28388638/mechanisms-causing-size-differences-of-the-land-hermit-crab-coenobita-rugosus-among-eco-islands-in-southern-taiwan
#16
Chia-Hsuan Hsu, Keryea Soong
Numerous environmental factors can influence body size. Comparing populations in different ecological contexts is one potential approach to elucidating the most critical of such factors. In the current study, we found that the body size of the land hermit crab Coenobita rugosus was significantly larger on Dongsha Island in the South China Sea than on other eco-islands around Southern Taiwan. We hypothesized that this could be due to differences in (1) shell resources, (2) parasite impact, (3) competition, (4) predation, and (5) food...
2017: PloS One
https://www.readbyqxmd.com/read/28387808/evaluation-of-hematobin-as-a-vaccine-candidate-to-control-haematobia-irritans-diptera-muscidae-loads-in-cattle
#17
M Breijo, S Rocha, X Ures, L Pastro, P Alonzo, C Fernández, A Meikle
The horn fly, Haematobia irritans (L.), is a blood-sucking livestock ectoparasite responsible for substantial livestock losses. In the present work, the potential use of recombinant hematobin (HTB), a horn fly salivary protein, as an antigen for cattle vaccination was investigated. In this trial, horn fly loads and H. irritans's blood intake were assessed in vaccinated (n = 4) and control (n = 4) crossbred dark-coated steers, which were naturally infected. The vaccinated group received a 1 ml subcutaneous injection of 100 µg of HTB protein emulsified in 500 µl of Incomplete Freund Adjuvant (AIF) on days 0 and 30...
April 6, 2017: Journal of Economic Entomology
https://www.readbyqxmd.com/read/28384422/physiological-correlates-of-multiple-parasitic-infections-in-side-blotched-lizards
#18
Austin R Spence, Andrew M Durso, Geoffrey D Smith, Heather M Skinner, Susannah S French
We investigated the presence of ectoparasites and hemoparasites in side-blotched lizards (Uta stansburiana) across a large part of their range and measured how parasitic infection related to several key physiological indicators of health. Blood samples were collected from 132 lizards from central Arizona, southern Utah, and eastern Oregon. Hemoparasites were found in 22 individuals (3.2% prevalence in Arizona, 19.1% in Utah, and 6.3% in Oregon), and ectoparasites were found on 51 individuals (56.3% prevalence in Arizona, 56...
May 2017: Physiological and Biochemical Zoology: PBZ
https://www.readbyqxmd.com/read/28383033/molecular-basis-of-olfactory-chemoreception-in-the-common-bed-bug-cimex-lectularius
#19
Feng Liu, Zhou Chen, Nannan Liu
As one of the most notorious ectoparasites, bed bugs rely heavily on human or animal blood sources for survival, mating and reproduction. Chemoreception, mediated by the odorant receptors on the membrane of olfactory sensory neurons, plays a vital role in their host seeking and risk aversion processes. We investigated the responses of odorant receptors to a large spectrum of semiochemicals, including human odorants and plant-released volatiles and found that strong responses were sparse; aldehydes/ketones were the most efficient stimuli, while carboxylic acids and aliphatics/aromatics were comparatively less effective in eliciting responses from bed bug odorant receptors...
April 6, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28381228/mesocarnivores-and-macroparasites-altitude-and-land-use-predict-the-ticks-occurring-on-red-foxes-vulpes-vulpes
#20
Attila D Sándor, Gianluca D'Amico, Călin M Gherman, Mirabela O Dumitrache, Cristian Domșa, Andrei Daniel Mihalca
BACKGROUND: The red fox Vulpes vulpes is the most common mesocarnivore in Europe and with a wide geographical distribution and a high density in most terrestrial habitats of the continent. It is fast urbanising species, which can harbor high numbers of different tick species, depending on the region. Here we present the results of a large-scale study, trying to disentangle the intricate relationship between environmental factors and the species composition of ectoparasites in red foxes...
April 5, 2017: Parasites & Vectors
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