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Journals International Journal for Para...

International Journal for Parasitology

https://read.qxmd.com/read/38609075/effects-of-regional-coordination-of-salmon-louse-control-in-reducing-negative-impacts-of-salmonid-aquaculture-on-wild-salmonids
#1
JOURNAL ARTICLE
Leif Christian Stige, Peder A Jansen, Kari O Helgesen
Parasitic salmon lice (Lepeoptheirus salmonis) are a constraint to the sustainable growth of salmonids in open net pens, and this issue has caused production to level off in recent years in the most aquaculture-intensive areas of Norway. The maximum allowed biomass at a regional level is regulated by using the so-called "traffic light" system, where salmon louse-induced mortality of migrating wild salmon post-smolts is evaluated against set targets. As a case study, we have investigated how a specific aquaculture-intensive area can reduce its louse levels sufficiently to achieve a low impact on wild salmon...
April 10, 2024: International Journal for Parasitology
https://read.qxmd.com/read/38609074/the-geographic-limits-and-life-history-of-the-tropical-brown-dog-tick-rhipicephalus-linnaei-audouin-1826-in-australia-with-notes-on-the-spread-of-ehrlichia-canis
#2
JOURNAL ARTICLE
Ernest J M Teo, Kimberly L Evasco, Dayana Barker, M L Levin, Stephen C Barker
The tropical brown dog tick, Rhipicephalus linnaei, is a tick of much medical, veterinary, and zoonotic importance. This tick has a nearly world-wide distribution due to its ability to survive and propagate in kennels and houses. Rhipicephalus linnaei is the vector of Ehrlichia canis, the causative agent of canine monocytic ehrlichiosis, an often debilitating disease of canids and, occasionally, humans. To prevent incursion of E. canis into Australia, dogs entering Australia have been required to have a negative immunofluorescence antibody test for E...
April 10, 2024: International Journal for Parasitology
https://read.qxmd.com/read/38604548/epidemiological-investigation-of-entamoeba-in-wild-rhesus-macaques-in-china-a-novel-ribosomal-lineage-and-genetic-differentiation-of-entamoeba-nuttalli
#3
JOURNAL ARTICLE
Mengshi Yu, Yongfang Yao, Xin Li, Aoxing Su, Meng Xie, Ying Xiong, Shengzhi Yang, Qingyong Ni, Hongtao Xiao, Huailiang Xu
Wild rhesus macaques are a potential source of zoonotic parasites for humans, and Entamoeba spp. are common intestinal parasites. To investigate the prevalence of Entamoeba in wild rhesus macaques in China and explore the genetic differentiation of the potentially pathogenic species Entamoeba nuttalli, a total of 276 fecal samples from five populations at high altitudes (HAG, 2,800-4,100 m above sea level) and four populations at low altitudes (LAG, 5-1,000 m above sea level) were collected. PCR methods based on the ssrRNA gene were used to detect Entamoeba infection...
April 9, 2024: International Journal for Parasitology
https://read.qxmd.com/read/38604547/searching-for-common-patterns-in-parasite-ecology-species-and-host-contributions-to-beta-diversity-in-helminths-of-south-african-ungulates-and-fleas-of-south-american-rodents
#4
JOURNAL ARTICLE
Ivan G Horak, Joop Boomker, Vasily I Grabovsky, Irina S Khokhlova, Kerstin Junker, Juliana P Sanchez, M Fernanda López Berrizbeitia, Boris R Krasnov
We searched for common patterns in parasite ecology by investigating species and host contributions to the beta-diversity of infracommunities (=assemblages of parasites harboured by a host individual) in helminths of three species of South African ungulates and fleas of 11 species of South American rodents, assuming that a comparison of patterns in distinctly different parasites and hosts would allow us to judge the generality or, at least, commonness of these patterns. We used data on species' composition and numbers of parasites and asked whether (i) parasite species' attributes (life cycle, transmission mode, and host specificity in helminths; possession of sclerotized combs, microhabitat preference, and host specificity in fleas) or their population structure (mean abundance and/or prevalence) and (ii) host characteristics (sex and age) affect parasite and host species' contributions to parasite beta-diversity (SCBD and HCBD, respectively)...
April 9, 2024: International Journal for Parasitology
https://read.qxmd.com/read/38575051/enigmatic-host-mite-relationships-unraveling-the-distribution-of-quill-mites-on-birds-of-paradise
#5
JOURNAL ARTICLE
Maciej Skoracki, Markus Unsoeld, Jakub Z Kosicki, Roland R Melzer, Stefan Friedrich, Bozena Sikora
Mites of the family Syringophilidae (Acariformes: Prostigmata: Cheyletoidea) are permanent and obligatory parasites of birds. This study presents an analysis of mite material collected from 22 avian species belonging to the family Paradisaeidae (Passeriformes), revealing the presence of four mite species belonging to four genera: Syringophiloidus attenboroughi n. sp., Peristerophila regiusi n. comb., Picobia frankei, and Gunabopicobia garylarsoni. In the present work, the genus Neoperisterophila is synonymized with the genus Peristerophila...
April 2, 2024: International Journal for Parasitology
https://read.qxmd.com/read/38570155/exploring-the-impact-of-epidemiological-and-clinical-factors-on-the-progression-of-canine-leishmaniosis-by-statistical-and-whole-genome-analyses-from-breed-predisposition-to-comorbidities
#6
JOURNAL ARTICLE
Carolina R Sanz, Juliana Sarquis, María Ángeles Daza, Guadalupe Miró
Canine leishmaniosis (CanL), caused by Leishmania infantum, is a complex disease of growing importance in Europe. Clinical manifestations result from the down-modulation of the host immune response through multiple host-parasite interactions. Although several factors might influence CanL progression, this is the first known study evaluating risk factors for its different clinical stages in a large referral hospital population (n=35.669) from an endemic area, over a 20 year period. Genome-wide scans for selection signatures were also conducted to explore the genomic component of clinical susceptibility to L...
April 1, 2024: International Journal for Parasitology
https://read.qxmd.com/read/38492780/the-unusual-kinetics-of-lactate-dehydrogenase-of-schistosoma-mansoni-and-their-role-in-the-rapid-metabolic-switch-after-penetration-of-the-mammalian-host
#7
JOURNAL ARTICLE
Michiel L Bexkens, Olivier M F Martin, Jos M van den Heuvel, Marion G J Schmitz, Bas Teusink, Barbara M Bakker, Jaap J van Hellemond, Jurgen R Haanstra, Malcolm D Walkinshaw, Aloysius G M Tielens
Lactate dehydrogenase (LDH) from Schistosoma mansoni has peculiar properties for a eukaryotic LDH. Schistosomal LDH (SmLDH) isolated from schistosomes, and the recombinantly expressed protein, are strongly inhibited by ATP, which is neutralized by fructose-1,6-bisphosphate (FBP). In the conserved FBP/anion binding site we identified two residues in SmLDH (Val187 and Tyr190) that differ from the conserved residues in LDHs of other eukaryotes, but are identical to conserved residues in FBP-sensitive prokaryotic LDHs...
March 14, 2024: International Journal for Parasitology
https://read.qxmd.com/read/38492779/comparative-genomics-analysis-reveals-sequence-characteristics-potentially-related-to-host-preference-in-cryptosporidium-xiaoi
#8
JOURNAL ARTICLE
Jiayu Li, Yingying Fan, Na Li, Yaqiong Guo, Weijian Wang, Kangli Feng, Wei He, Falei Li, Jianbo Huang, Yanhua Xu, Lihua Xiao, Yaoyu Feng
Cryptosporidium spp. are important diarrhea-associated pathogens in humans and livestock. Among the known species, Cryptosporidium xiaoi, which causes cryptosporidiosis in sheep and goats, was previously recognized as a genotype of the bovine-specific Cryptosporidium bovis based on their high sequence identity in the ssrRNA gene. However, the lack of genomic data has limited characterization of the genetic differences between the two closely related species. In this study, we sequenced the genomes of two C...
March 14, 2024: International Journal for Parasitology
https://read.qxmd.com/read/38460722/assessing-the-role-of-individual-foxes-in-environmental-contamination-with-echinococcus-multilocularis-through-faecal-samples
#9
JOURNAL ARTICLE
Abdou Malik Da Silva, Eve Afonso, Francis Raoul, Patrick Giraudoux, Marina Mergey, Gérald Umhang, Sandra Courquet, Dominique Rieffel, Laurence Millon, Jenny Knapp
Key parasite transmission parameters are difficult to obtain from elusive wild animals. For Echinococcus multilocularis, the causative agent of alveolar echinococcosis (AE), the red fox is responsible for most of the environmental contamination in Europe. The identification of individual spreaders of E. multilocularis environmental contamination is crucial to improving our understanding of the ecology of parasite transmission in areas of high endemicity and optimising the effectiveness of prevention and control measures in the field...
March 7, 2024: International Journal for Parasitology
https://read.qxmd.com/read/38460721/sympatry-in-a-nightingale-contact-zone-has-no-effect-on-host-specific-blood-parasite-prevalence-and-lineage-diversity
#10
JOURNAL ARTICLE
William Jones, Radka Reifová, Jiří Reif, Petr Synek, Michal Šíma, Pavel Munclinger
Parasites are a key driving force behind many ecological and evolutionary processes. Prevalence and diversity of parasites, as well as their effects on hosts, are not uniform across host species. As such, the potential parasite spillover between species can significantly influence outcomes of interspecific interactions. We screened two species of Luscinia nightingales for haemosporidian blood parasites (Plasmodium, Leucocytozoon and Haemoproteus) along an approximately 3,000 km transect in Europe, incorporating areas of host distant allopatry, close allopatry and sympatry...
March 7, 2024: International Journal for Parasitology
https://read.qxmd.com/read/38458482/first-use-of-tissue-exudate-serology-to-identify-toxocara-spp-infection-in-food-animals
#11
JOURNAL ARTICLE
Sara R Healy, Eric R Morgan, Joaquin M Prada, Grégory Karadjian, Aurélie Chevillot, Martha Betson
Toxocara canis and Toxocara cati are globally distributed, zoonotic roundworm parasites. Human infection can have serious clinical consequences including blindness and brain disorders. In addition to ingesting environmental eggs, humans can become infected by eating infective larvae in raw or undercooked meat products. To date, no studies have assessed the prevalence of Toxocara spp. larvae in meat from animals consumed as food in the UK or assessed tissue exudates for the presence of anti-Toxocara antibodies...
March 6, 2024: International Journal for Parasitology
https://read.qxmd.com/read/38452965/parvatrema-spp-digenea-gymnophallidae-with-parthenogenetic-metacercariae-diversity-distribution-and-host-specificity-in-the-palaearctic
#12
JOURNAL ARTICLE
Kirill V Galaktionov, Anna Gonchar, Daria Postanogova, Aleksei Miroliubov, Semen Yu Bodrov
There are several species of gymnophallid digeneans in the genus Parvatrema that are unique in developing metacercariae that reproduce by parthenogenesis in the second intermediate host. Transmission of these digeneans takes place in coastal ecosystems of the North Pacific and North Atlantic seas. The first intermediate hosts are bivalves, the second ones are gastropods, and the definitive hosts are migratory birds. We integrated data accumulated over 25 years of research and differentiated a complex of five closely related species...
March 5, 2024: International Journal for Parasitology
https://read.qxmd.com/read/38452964/unconventional-features-in-the-transcription-and-processing-of-spliceosomal-small-nuclear-rnas-in-the-protozoan-parasite-trichomonas-vaginalis
#13
JOURNAL ARTICLE
Augusto Simoes-Barbosa, Jully Pinheiro
Trichomonas vaginalis is a medically important protozoan parasite, and a deep-branching, evolutionarily divergent unicellular eukaryote that has conserved several key features of eukaryotic gene expression. Trichomonas vaginalis possesses a metazoan/plant-like capping apparatus, mRNAs with a cap 1 structure and spliceosomes containing the five small nuclear RNAs (snRNAs). However, in contrast to metazoan and plant snRNAs, the structurally conserved T. vaginalis snRNAs were initially identified as lacking the canonical guanosine cap nucleotide...
March 5, 2024: International Journal for Parasitology
https://read.qxmd.com/read/38452963/gastropod-invasions-in-anthropogenically-impacted-impoundments-in-south-africa-tracing-their-origins-and-exploring-field-evidence-of-parasite-spillback-and-amplification
#14
JOURNAL ARTICLE
James Omondi Outa, Parthi Bhika, Annemariè Avenant-Oldewage
Invasive snails are associated with ecological problems in freshwater bodies worldwide. However, their impact on the transmission of digenean infections remain underreported. In the present study, 1708 specimens representing four snail species were sampled from four impoundments in the Limpopo River system in South Africa. Gyraulus chinensis (Planorbidae), Physella acuta (Physidae) and Pseudosuccinea columella (Lymnaeidae), which are invasive, were found in all the sampling sites. In contrast, the native lymnaeid Radix natalensis occurred at only one study site...
March 5, 2024: International Journal for Parasitology
https://read.qxmd.com/read/38447815/temperature-bounded-development-of-dirofilaria-immitis-larvae-restricts-the-geographical-distribution-and-seasonality-of-its-transmission-case-study-and-decision-support-system-for-canine-heartworm-management-in-australia
#15
JOURNAL ARTICLE
Peter J Atkinson, Mark Stevenson, Ryan O'Handley, Torben Nielsen, Charles G B Caraguel
Dirofilaria immitis is the causative agent of canine heartworm disease. We used the established heartworm development unit (HDU) principle to map the extrinsic incubation period (EIP) of D. immitis in Australia using historical weather data from 2013-2022. We found weather conditions suitable for EIP completion showed substantial seasonality and geographical variability. Whilst a considerable percentage of the Australian territory showed suitable weather conditions to always support EIP completion (17%), only 2...
March 4, 2024: International Journal for Parasitology
https://read.qxmd.com/read/38311021/laboratory-and-field-validation-of-the-recombinase-polymerase-amplification-assay-targeting-the-schistosoma-mansoni-mitochondrial-minisatellite-region-smmit-rpa-for-snail-xenomonitoring-for-schistosomiasis
#16
JOURNAL ARTICLE
Silvia Gonçalves Mesquita, Grace Gadd, Fernanda Sales Coelho, Adam Cieplinski, Aidan Emery, Elena Birgitta Lugli, Taynãna César Simões, Cristina Toscano Fonseca, Roberta Lima Caldeira, Bonnie Webster
Improvements in diagnostics for schistosomiasis in both humans and snail hosts are priorities to be able to reach the World Health Organization (WHO) goal of eliminating the disease as a public health problem by 2030. In this context, molecular isothermal amplification tests, such as Recombinase Polymerase Amplification (RPA), are promising for use in endemic areas at the point-of-need for their accuracy, robustness, simplicity, and time-effectiveness. The developed recombinase polymerase amplification assay targeting the Schistosoma mansoni mitochondrial minisatellite region (SmMIT-RPA)was used to detect Schistosoma mansoni DNA from both laboratory and field Biomphalaria snails...
February 2, 2024: International Journal for Parasitology
https://read.qxmd.com/read/38246406/development-of-adult-dirofilaria-immitis-worms-in-the-rag2-il-2r%C3%AE-mouse-model
#17
JOURNAL ARTICLE
Frederic Risch, Carolin Ludwig-Erdmann, Achim Hoerauf, Heinz Sager, Marc P Hübner
Dirofilaria immitis is the causative agent for one of the major parasitic infections in dogs. It is currently not possible to reliably diagnose the infection before the development of fertile adult female worms and the presence of microfilariae which takes six to 7 months. However, at this point adult worms already reside in the pulmonary arteries and can cause significant damage. Novel in vivo models may facilitate the development of new diagnostic tools and improve treatment options for both the early and late stages of D...
January 19, 2024: International Journal for Parasitology
https://read.qxmd.com/read/38246405/mitochondrial-genetic-diversity-and-phylogenetic-relationships-of-echinococcus-multilocularis-in-europe
#18
JOURNAL ARTICLE
Azzurra Santoro, Federica Santolamazza, Simone M Cacciò, Giuseppe La Rosa, Daniela Antolová, Herbert Auer, Guna Bagrade, Petra Bandelj, Walter Basso, Relja Beck, Carlo V Citterio, Rebecca K Davidson, Gunita Deksne, Caroline F Frey, Eva Fuglei, Walter Glawischnig, Bruno Gottstein, Jiří Harna, Heidi Huus Petersen, Jacek Karamon, Famke Jansen, Júlia Jarošová, Pikka Jokelainen, Britta Lundström-Stadelmann, Pavlo Maksimov, Milan Miljević, Martina Miterpáková, Epp Moks, Francesco Origgi, Zanda Ozolina, Marie-Pierre Ryser, Thomas Romig, Mindaugas Šarkūnas, Nathalie Scorrano, Urmas Saarma, Viliam Šnábel, Tamás Sréter, Gèrald Umhang, Gorazd Vengušt, Diana Žele Vengušt, Adriano Casulli
The cestode Echinococcus multilocularis is the causative agent of alveolar echinococcosis, a fatal zoonotic parasitic disease of the northern hemisphere. Red foxes are the main reservoir hosts and, likely, the main drivers of the geographic spread of the disease in Europe. Knowledge of genetic relationships among E. multilocularis isolates at a European scale is key to understanding the dispersal characteristics of E. multilocularis. Hence, the present study aimed to describe the genetic diversity of E. multilocularis isolates obtained from different host species in 19 European countries...
January 19, 2024: International Journal for Parasitology
https://read.qxmd.com/read/38242277/molecular-characteristics-of-cryptosporidium-spp-in-human-cases-in-five-finnish-hospital-districts-during-2021-first-findings-of-cryptosporidium-mortiferum-cryptosporidium-chipmunk-genotype-i-in-finland
#19
JOURNAL ARTICLE
Tessa Häkkänen, Ruska Rimhanen-Finne, Jenni Antikainen, Eeva Ruotsalainen, Anni Vainio
The aims of the study were to characterise the distribution of Cryptosporidium spp. and subtypes causing infections in Finland during 2021. This was carried out with 60 clinical samples from the hospital districts of Helsinki and Uusimaa, Vaasa, Kymenlaakso, South Karelia, and Central Finland, as well as with Finnish Infectious Diseases Register (FIDR) data. Additionally, the study aimed to explore the potential exposures related to Cryptosporidium mortiferum (Cryptosporidium chipmunk genotype I) infections via interview...
January 17, 2024: International Journal for Parasitology
https://read.qxmd.com/read/38185351/strong-mitonuclear-discordance-in-the-phylogeny-of-neodermata-and-evolutionary-rates-of-polyopisthocotylea
#20
JOURNAL ARTICLE
Dong Zhang, Ivan Jakovlić, Hong Zou, Fei Liu, Chuan-Yu Xiang, Qunzong Gusang, Sonam Tso, Shenggui Xue, Wen-Jin Zhu, Zhenxin Li, Jihua Wu, Gui-Tang Wang
The genomic evolution of Polyopisthocotylea remains poorly understood in comparison to the remaining three classes of Neodermata: Monopisthocotylea, Cestoda, and Trematoda. Moreover, the evolutionary sequence of major events in the phylogeny of Neodermata remains unresolved. Herein we sequenced the mitogenome and transcriptome of the polyopisthocotylean Diplorchis sp., and conducted comparative evolutionary analyses using nuclear (nDNA) and mitochondrial (mtDNA) genomic datasets of Neodermata. We found strong mitonuclear discordance in the phylogeny of Neodermata...
January 5, 2024: International Journal for Parasitology
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