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https://www.readbyqxmd.com/read/28641605/state-dependent-parasitism-by-a-facultative-parasite-of-fruit-flies
#1
Lien T Luong, Taylor Brophy, Emily Stolz, Solomon J Chan
Parasites can evolve phenotypically plastic strategies for transmission such that a single genotype can give rise to a range of phenotypes depending on the environmental condition. State-dependent plasticity in particular can arise from individual differences in the parasite's internal state or the condition of the host. Facultative parasites serve as ideal model systems for investigating state-dependent plasticity because individuals can exhibit two life history strategies (free-living or parasitic) depending on the environment...
June 23, 2017: Parasitology
https://www.readbyqxmd.com/read/28622856/survey-for-selected-pathogens-in-wild-pigs-sus-scrofa-from-guam-marianna-islands-usa
#2
Christopher A Cleveland, Anthony DeNicola, J P Dubey, Dolores E Hill, Roy D Berghaus, Michael J Yabsley
Pigs (Sus scrofa) were introduced to Guam in the 1600's and are now present in high densities throughout the island. Wild pigs are reservoirs for pathogens of concern to domestic animals and humans. Exposure to porcine parvovirus, transmissible gastroenteritis, and Leptospira interrogans has been documented in domestic swine but data from wild pigs are lacking. The close proximity of humans, domestic animals, and wild pigs, combined with the liberal hunting of wild pigs, results in frequent opportunities for pathogen transmission...
June 2017: Veterinary Microbiology
https://www.readbyqxmd.com/read/28622341/hygienic-and-grooming-behaviors-in-african-and-european-honeybees-new-damage-categories-in-varroa-destructor
#3
Beatrice T Nganso, Ayuka T Fombong, Abdullahi A Yusuf, Christian W W Pirk, Charles Stuhl, Baldwyn Torto
Varroa destructor is an ectoparasitic pest of honeybees, and a threat to the survival of the apiculture industry. Several studies have shown that unlike European honeybees, African honeybee populations appear to be minimally affected when attacked by this mite. However, little is known about the underlying drivers contributing to survival of African honeybee populations against the mite. We hypothesized that resistant behavioral defenses are responsible for the survival of African honeybees against the ectoparasite...
2017: PloS One
https://www.readbyqxmd.com/read/28616169/host-sympatry-and-body-size-influence-parasite-straggling-rate-in-a-highly-connected-multihost-multiparasite-system
#4
Jose L Rivera-Parra, Iris I Levin, Kevin P Johnson, Patricia G Parker
Parasite lineages commonly diverge when host lineages diverge. However, when large clades of hosts and parasites are analyzed, some cases suggest host switching as another major diversification mechanism. The first step in host switching is the appearance of a parasite on an atypical host, or "straggling." We analyze the conditions associated with straggling events. We use five species of colonially nesting seabirds from the Galapagos Archipelago and two genera of highly specific ectoparasitic lice to examine host switching...
June 2017: Ecology and Evolution
https://www.readbyqxmd.com/read/28615872/seasonal-incidence-of-protozoan-parasitic-infestation-in-ornamental-fishes-of-west-bengal-india
#5
Mandira Saha, P K Bandyopadhyay
The communication, dealing with the prevalence of protozoan parasites of the ornamental fish of West Bengal. During the study more than five hundred fish have been examined from five districts namely, Nadia, Hooghly, Howrah, North 24-pargana and South 24-pargana of West Bengal during pre-monsoon, monsoon and post-monsoon season. The study reveals that the intensity of infection is more in case of ciliate parasites. The highest ectoparasitic infection has been recorded during post-monsoon season, i.e. from November to February, followed by the pre-monsoon period while the lowest infection was recorded during monsoon i...
June 2017: Journal of Parasitic Diseases: Official Organ of the Indian Society for Parasitology
https://www.readbyqxmd.com/read/28610229/a-new-east-african-genus-of-spirostreptid-millipedes-diplopoda-spirostreptida-spirostreptidae-with-notes-on-their-fungal-ectoparasite-i-rickia-gigas-i
#6
Henrik Enghoff
The new genus Tropostreptus is erected to accommodate seven species which are all endemic in Tanzania: T. hamatus (Demange, 1977) (type species, = Spirostreptus hamatus Demange, 1977), T. sigmatospinus sp. nov., T. microcephalus sp. nov., T. droides sp. nov., T. kipunji spec. nov., T. austerus (Attems, 1950) (= Epistreptus austerus Attems, 1950) and T. severus sp. nov. All but one (T. sigmatospinus) of the species are restricted to the Eastern Arc Mts. in a wide sense, i.e., including Mt. Rungwe. Notes are included on Rickia gigas Santamaria et al...
June 7, 2017: Zootaxa
https://www.readbyqxmd.com/read/28601811/microsomal-triglyceride-transfer-protein-mtp-in-the-ectoparasitic-crustacean-salmon-louse-l-salmonis
#7
Muhammad Tanveer Khan, Sussie Dalvin, Frank Nilsen, Rune Male
The salmon louse Lepeophtheirus salmonis is a challenging ectoparasite for the salmon farming industry and wild salmonids. Salmon lice have a very high reproductive output, that require deposition of large amounts of lipids into growing oocytes as a major energy source, most probably mediated by lipoproteins. Microsomal triglyceride transfer protein (MTP) is essential for the assembly of lipoproteins. Salmon lice have three LsMTP transcript variants encoding two different protein isoforms predicted to contain three β sheets (N, C and A) and a central helical domain, similar to MTP from other species...
June 10, 2017: Journal of Lipid Research
https://www.readbyqxmd.com/read/28597314/deltamethrin-as-inductor-agent-of-precocious-ovarian-degeneration-in-rhipicephalus-sanguineus-s-l-acari-ixodidae-ticks
#8
Maria Izabel Camargo-Mathias, Natalia Rubio Claret Pereira, Camila da Silva Reis, Cristiane Regina de Almeida, Douglas Rodrigo Dos Santos Mendes, Giselle Bezerra de Araújo, Lays Postali, Tober Figueroa, Allan Roberto Fernandes Ferreira, Juan Parente Santos, Patrícia Rosa de Oliveira
The cosmopolitan species Rhipicephalus sanguineus s.l. is one of the most widely distributed ticks all over the world. These ectoparasites are vectors of several pathogens and cause significant direct damage to their hosts. The biological success of these ectoparasites has been attributed to their ovaries and salivary glands, organs that ensure their survival in various environmental conditions. The importance of the ovaries in ticks is that, after mating, the individuals are able to lay approximately three thousand eggs...
June 8, 2017: Experimental & Applied Acarology
https://www.readbyqxmd.com/read/28594843/microbes-and-masculinity-does-exposure-to-pathogenic-cues-alter-women-s-preferences-for-male-facial-masculinity-and-beardedness
#9
Toneya L McIntosh, Anthony J Lee, Morgan J Sidari, Rebecca E Stower, James M Sherlock, Barnaby J W Dixson
Women's preferences for men's androgen dependent secondary sexual traits are proposed to be phenotypically plastic in response to exposure to pathogens and pathogen disgust. While previous studies report that masculinity in facial shape is more attractive to women who have recently been exposed to pathogenic cues and who are high in self-reported pathogen disgust, facial hair may reduce male attractiveness under conditions of high pathogens as beards are a possible breeding ground for disease carrying ectoparasites...
2017: PloS One
https://www.readbyqxmd.com/read/28585103/a-review-of-fur-mites-of-the-genus-dubininetta-fain-lukoschus-1978-acariformes-listrophoridae-ectoparasites-of-moles-soricomorpha-talpidae
#10
Andre V Bochkov
The fur mite genus Dubininetta Fain & Lukoschus, 1978 (Acariformes: Listrophoridae) represented by ectoparasites of moles (Soricomorpha: Talpidae) is revised. An amended diagnosis of this genus is provided. Two new species are described from moles in Vietnam: Dubininetta euroscaptor n. sp. from Euroscaptor parvidens (Miller) and Dubininetta abramovi n. sp. from Euroscaptor subanura Kawada, Son & Can. The insufficiently described D. taiwanensis (Fain & Lukoschus, 1978) from Mogera insularis (Swinhoe) (type-host) is redescribed based on the type-specimens and numerous newly collected in the Russian Far East specimens from Mogera robusta Nehring...
June 5, 2017: Systematic Parasitology
https://www.readbyqxmd.com/read/28583186/assessment-of-dog-owner-adherence-to-veterinarians-flea-and-tick-prevention-recommendations-in-the-united-states-using-a-cross-sectional-survey
#11
Robert P Lavan, Kaan Tunceli, Dongmu Zhang, Dorothy Normile, Rob Armstrong
BACKGROUND: Adherence to a prescribed therapeutic regimen is a critical factor for achieving medication effectiveness and therefore treatment success. In the case of companion animal ectoparasite control, suboptimal owner adherence to medication recommendations is thought to be a common cause of treatment failure, and previous reports have found pet owners applying an average of 4.0-4.6 monthly flea and tick treatments per year to their dogs. This study investigated: US veterinary hospital self-reported flea and tick prevention recommendations; dog owner recollection of these recommendations; dog owner opinion on flea/tick recommendations and estimated owner flea and tick medication adherence based on veterinary hospital purchase records...
June 6, 2017: Parasites & Vectors
https://www.readbyqxmd.com/read/28577881/gene-enriched-draft-genome-of-the-cattle-tick-rhipicephalus-microplus-assembly-by-the-hybrid-pacific-biosciences-illumina-approach-enabled-analysis-of-the-highly-repetitive-genome
#12
Roberto A Barrero, Felix D Guerrero, Michael Black, John McCooke, Brett Chapman, Faye Schilkey, Adalberto A Pérez de León, Robert J Miller, Sara Bruns, Jason Dobry, Galina Mikhaylenko, Keith Stormo, Callum Bell, Quanzhou Tao, Robert Bogden, Paula M Moolhuijzen, Adam Hunter, Matthew I Bellgard
The genome of the cattle tick Rhipicephalus microplus, an ectoparasite with global distribution, is estimated to be 7.1Gbp in length and consists of approximately 70% repetitive DNA. We report the draft assembly of a tick genome that utilized a hybrid sequencing and assembly approach to capture the repetitive fractions of the genome. Our hybrid approach produced an assembly consisting of 2.0Gbp represented in 195,170 scaffolds with a N50 of 60,284bp. The Rmi v2.0 assembly is 51.46% repetitive with a large fraction of unclassified repeats, short interspersed elements, long interspersed elements and long terminal repeats...
June 1, 2017: International Journal for Parasitology
https://www.readbyqxmd.com/read/28569177/serological-and-molecular-detection-of-spotted-fever-group-rickettsia-in-a-group-of-pet-dogs-from-luanda-angola
#13
Patrícia F Barradas, Hugo Vilhena, Ana Cristina Oliveira, Sara Granada, Irina Amorim, Paula Ferreira, Luís Cardoso, Fátima Gärtner, Rita de Sousa
BACKGROUND: Infections with tick-borne rickettsiae can cause diseases well known in humans but still not so well characterized in dogs. Susceptibility to infection depends on the virulence of Rickettsia spp. and only a few of them have been described to cause disease in dogs. The aim of this study was to investigate the exposure to Rickettsia spp. among a group of pet dogs from Luanda, Angola. RESULTS: Out of 103 dogs included in the study, 62 (60.2%) were infested with ticks...
May 31, 2017: Parasites & Vectors
https://www.readbyqxmd.com/read/28566098/fish-parasites-as-indicators-of-organic-pollution-in-southern-brazil
#14
A C F Lacerda, K Roumbedakis, J G S Bereta Junior, A P O Nuñer, M M Petrucio, M L Martins
Increasing urbanization along riverbanks is a constant source of stressors to the aquatic community, and the use of bioindicators is suitable to detect and monitor the effect of each stressor. We investigated the parasites of the 'cará' fish (Geophagus brasiliensis) as potential bioindicators in a river whose banks are subject to increasing anthropogenic pressure. Samples were taken at four points of the Sangradouro River, in Florianópolis, southern Brazil, bimonthly for 12 months. Water temperature, pH, dissolved oxygen, conductivity and salinity were measured at each point and water samples were taken for nutrient analysis (total nitrogen, nitrite, total ammonia nitrogen, total phosphorus, phosphate), and total and faecal coliforms...
June 1, 2017: Journal of Helminthology
https://www.readbyqxmd.com/read/28563902/of-lemurs-and-louse-flies-the-biogeochemical-and-biotic-effects-of-forest-disturbance-on-propithecus-edwardsi-and-its-obligate-ectoparasite-allobosca-crassipes-in-ranomafana-national-park-southeastern-madagascar
#15
Elizabeth McGee, Stanley Vaughn
From alleles to ecosystems and landscapes, anthropogenic activity continues to affect the environment, with particularly adverse effects on biodiversity hotspots such as Madagascar. Selective logging has been proposed as a "win-win" conservation strategy, yet its effects on different components of biodiversity are still not fully understood. Here we examine biotic factors (i.e., dietary differences) that may be driving differences in biogeochemical stocks between disturbed and undisturbed forests. We present the stable nitrogen (δ(15) N) and carbon (δ(13) C) isotope composition of hair from the lemur Propithecus edwardsi and of whole bodies of its obligate ectoparasite, the louse-fly Allobosca crassipes, from sites in Ranomafana National Park (RNP) that are comparable except for the history of logging and subsequent forest regeneration...
May 31, 2017: American Journal of Primatology
https://www.readbyqxmd.com/read/28556094/reduced-growth-in-wild-juvenile-sockeye-salmon-oncorhynchus-nerka-infected-with-sea-lice
#16
S C Godwin, L M Dill, M Krkošek, M H H Price, J D Reynolds
Daily growth rings were examined in the otoliths of wild juvenile sockeye salmon Oncorhynchus nerka to determine whether infection by ectoparasitic sea lice Caligus clemensi and Lepeophtheirus salmonis was associated with reduced host body growth, an important determinant of survival. Over 98% of the sea lice proved to be C. clemensi and the fish that were highly infected grew more slowly than uninfected individuals. Larger fish also grew faster than smaller fish. Finally, there was evidence of an interaction between body size and infection status, indicating the potential for parasite-mediated growth divergence...
May 29, 2017: Journal of Fish Biology
https://www.readbyqxmd.com/read/28545591/an-ultrastructural-study-of-the-surface-and-attachment-structures-of-paradiplozoon-homoion-bychowsky-nagibina-1959-monogenea-diplozoidae
#17
Veronika Konstanzová, Božena Koubková, Martin Kašný, Jana Ilgová, Ewa Dzika, Milan Gelnar
BACKGROUND: Species of Diplozoon Palombi, 1949 (Monogenea: Diplozoidae) are blood-feeding ectoparasites mainly parasitising the gills of cyprinid fishes. Although these parasites have been the subject of numerous taxonomic, phylogenetic and ecological studies, the ultrastructure of the surface and haptor attachment structures remains almost unknown. In this study, we used transmission electron microscopy to examine the ultrastructure of attachment clamps and neodermal surface of Paradiplozoon homoion (Bychowsky & Nagibina, 1959), family Diplozoidae Palombi, 1949, thereby broadening our knowledge of platyhelminth biology...
May 25, 2017: Parasites & Vectors
https://www.readbyqxmd.com/read/28544577/hatching-asynchrony-impacts-cognition-in-male-zebra-finches
#18
Simone A Campbell, Michelle L Beck, Kendra B Sewall
Conditions experienced early in life can shape brain development and later cognition. Altricial songbirds are particularly vulnerable to early environmental perturbations. Research on "Developmental Stress" in songbirds has addressed how early-life conditions may impair song learning and has been extended to consider other components of adult phenotype. Early-life challenges ranging from ectoparasites to competition with siblings have been shown to compromise song learning and other measures of cognition, as well as behavioral strategy...
May 23, 2017: Journal of Experimental Zoology. Part A, Ecological Genetics and Physiology
https://www.readbyqxmd.com/read/28544317/fish-parasite-dinoflagellates-haidadinium-ichthyophilum-and-piscinoodinium-share-a-recent-common-ancestor
#19
Elisabeth Hehenberger, Erick R James, Javier Del Campo, John A Buckland-Nicks, Thomas E Reimchen, Patrick J Keeling
The dinoflagellate Haidadinium ichthyophilum Buckland-Nicks, Reimchen and Garbary 1997 is an ectoparasite of the spine-deficient, three-spine stickleback Gasterosteus aculeatus L. Reimchen 1984, a fish endemic to Rouge Lake, Haida Gwaii. Haidadinium ichthyophilum proved difficult to assign taxonomically, because its morphology and complex life cycle exhibited defining characteristics of both autotrophic and heterotrophic dinoflagellates, and was tentatively assigned to the Phytodiniales. Here, we characterized a 492bp-fragment of the small subunit ribosomal RNA (SSU rRNA) from preserved H...
May 25, 2017: Journal of Eukaryotic Microbiology
https://www.readbyqxmd.com/read/28541836/description-of-candidatus-bartonella-fadhilae-n-sp-and-candidatus-bartonella-sanaae-n-sp-bartonellaceae-from-dipodillus-dasyurus-and-sekeetamys-calurus-gerbillinae-from-the-sinai-massif-egypt
#20
Mohammed Alsarraf, Eman M E Mohallal, Ewa J Mierzejewska, Jolanta Behnke-Borowczyk, Renata Welc-Falęciak, Małgorzata Bednarska, Lukasz Dziewit, Samy Zalat, Francis Gilbert, Jerzy M Behnke, Anna Bajer
Bartonella spp. are parasites of mammalian erythrocytes and endothelial cells, transmitted by blood-feeding arthropod ectoparasites. Different species of rodents may constitute the main hosts of Bartonella, including several zoonotic species of Bartonella. The aim of this study was to identify and compare Bartonella species and genotypes isolated from rodent hosts from the South Sinai, Egypt. Prevalence of Bartonella infection was assessed in rodents (837 Acomys dimidiatus, 73 Acomys russatus, 111 Dipodillus dasyurus, and 65 Sekeetamys calurus) trapped in 2000, 2004, 2008, and 2012 in four dry montane wadis around St...
May 25, 2017: Vector Borne and Zoonotic Diseases
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