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1.
Parasitol Res ; 122(2): 675-684, 2023 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-36504395

RESUMO

Ectoparasites of dogs represent an important group of parasites. They often suck blood, cause pruritis, and could serve as vectors of many pathogens of veterinary and public health importance. In northeastern Nigeria, there is a lack of data regarding ectoparasites of dogs. Therefore, this study was undertaken to explore the external parasites of dogs and the associated epidemiological risk factors. A total of 1041 dogs (mean age = 8.5 ± 2.1 months) from residential house visit (54.9%) and those attending veterinary clinic (45.1%) were sampled in northeastern Nigeria. Multivariate logistic regression analysis assessed epidemiological risk factors associated with canine ectoparasitic infections. Of the 1041 dogs screened, 92.5% (963/1047) harbored one or more ectoparasites. Rhipicephalus sanguineus (52.4%), Linognathus setosus (7.8%), Ctenocephalides canis (2.3%), and Otodectes cynotis canis (1.4%) were the significantly encountered tick, lice, fleas, and mite species, respectively. Being female dog (OR = 1.8; p = 0.01), cross (OR = 2.2; p = 0.029), and exotic breeds (OR = 2.4; p = 0.02), < 7 months (OR = 3.1; p = 0.04) and 7-12 months (OR = 2.1; p = 0.01) aged dogs as well as rainy season (OR = 1.9; p = 0.02) were strong predictors for tick infestation. Similarly, cross (OR = 7.2; p = 0.001) and local breeds (OR = 2.8; p = 0.0001), dogs aged > 12 months (OR = 2.5; p = 0.03), and dogs used for hunting (OR = 3.2; p = 0.01) and as security guards (OR = 3.8; p = 0.01) were strongly associated with lice infestation. Results from this study revealed a high prevalence of external parasites parasitizing majority of the sampled dogs. Some of these parasites may serve as vectors of zoonotic pathogens posing public health risks.


Assuntos
Anoplura , Doenças do Cão , Ectoparasitoses , Parasitos , Rhipicephalus sanguineus , Animais , Cães , Feminino , Masculino , Ectoparasitoses/epidemiologia , Ectoparasitoses/veterinária , Ectoparasitoses/parasitologia , Nigéria/epidemiologia , Doenças do Cão/epidemiologia , Doenças do Cão/parasitologia
2.
Int J Mol Sci ; 23(21)2022 Oct 28.
Artigo em Inglês | MEDLINE | ID: mdl-36361879

RESUMO

Sucking lice are obligate ectoparasites of mammalian hosts, causing serious public health problems and economic losses worldwide. It is well known that sucking lice have fragmented mitochondrial (mt) genomes, but many remain undetermined. To better understand patterns of mt genome fragmentation in the sucking lice, we sequenced the mt genome of the buffalo louse Haematopinus tuberculatus using next-generation sequencing (NGS). The mt genome of H. tuberculatus has ten circular minichromosomes containing a total of 37 genes. Each minichromosome is 2.9-5.0 kb long and carries one to eight genes plus one large non-coding region. The number of mt minichromosomes of H. tuberculatus (ten) is different from those of congeneric species (horse louse H. asini, domestic pig louse H. suis and wild pig louse H. apri) and other sucking lice. Two events (gene translocation and merger of mt minichromosome) are observed in Haematopinus. Compared to other studies, our phylogeny generated from mt genome datasets showed a different topology, suggesting that inclusion of data other than mt genomes would be required to resolve phylogeny of sucking lice. To our knowledge, this is the first report of a ten mt minichromosomes genome in sucking lice, which opens a new outlook into unexplored mt genome fragmentation patterns in sucking lice.


Assuntos
Anoplura , Genoma Mitocondrial , Suínos , Animais , Cavalos/genética , Evolução Molecular , Anoplura/genética , Sequência de Bases , Filogenia , Sus scrofa/genética
3.
Zootaxa ; 5168(2): 196-206, 2022 Jul 21.
Artigo em Inglês | MEDLINE | ID: mdl-36101290

RESUMO

The bark louse genus Ceratostigma Li, 2002 is revised with description of Ceratostigma stagona sp. n., from Xizang Autonomous Region, China. A new combination of an Indonesian endemic species, C. lisae (Thornton, 1984) comb. n., is proposed, and thus Ceratostigma is newly recorded from Indonesia. A distribution map and a key to species of Ceratostigma are also provided.


Assuntos
Anoplura , Plumbaginaceae , Animais , China , Neópteros , Casca de Planta
4.
Sci Rep ; 12(1): 14078, 2022 08 18.
Artigo em Inglês | MEDLINE | ID: mdl-35982240

RESUMO

The seal heartworm Acanthocheilonema spirocauda (Nematoda: Onchocercidae) parasitizes the heart and pulmonary arteries of various phocid seals of the Northern Hemisphere. Over many decades, potential vectors of this parasite have been discussed, and to this date, the life cycle is not fully known. The seal louse Echinophthirius horridus (Anoplura: Echinophthiriidae) is an obligatory, permanent and haematophagous ectoparasite of phocids that has been hypothesized to function as obligate intermediate host for A. spirocauda. We examined 11 adult E. horridus specimens collected from stranded harbour seals (Phoca vitulina) in rehabilitation at the Sealcentre Pieterburen by X-ray microCT imaging, aiming to illustrate larval A. spirocauda infection sites in situ. In three of these specimens, thread-like larvae were detected in insect organs. Detailed imaging of the most infected louse revealed a total of 54 A. spirocauda larvae located either in fat bodies or the haemocoel. Histological analysis of the same specimen illustrated nematode cross-sections, confirming X-ray microCT data. The current data strongly suggest that E. horridus is a natural intermediate host for A. spirocauda. Moreover, we demonstrate the potential of X-ray microCT-based imaging as a non-destructive method to analyze host-parasite interactions, especially in the neglected field of marine mammal parasitology.


Assuntos
Acanthocheilonema , Anoplura , Dirofilaria immitis , Nematoides , Phoca , Animais , Larva , Microtomografia por Raio-X
5.
J Parasitol ; 108(4): 353-365, 2022 07 01.
Artigo em Inglês | MEDLINE | ID: mdl-35925594

RESUMO

The sucking louse fauna associated with Mongolian mammals is inadequately known. We provide a list of 25 species of sucking lice recorded from Mongolian rodents including previously published records, and new records of specimens collected during an expedition to northwestern Mongolia in 2015. Hoplopleura inagakii Ono and Hasegawa and Polyplax cricetulis Chin are newly recorded from Mongolia and 2 new host associations in Mongolia are recorded for Hoplopleura acanthopus (Burmeister). We describe Hoplopleura altaiensis n. sp., from the Gobi Altai mountain vole, Alticola barakshin Bannikov (type host) with an additional specimen from Alticola strelzowi (Kastchenko) (Strelzow's mountain vole). Both sexes of the new species are illustrated with scanning electron micrographs and line drawings. We note small morphological differences in the shape of the female subgenital plate between specimens prepared for scanning electron microscopy versus those prepared for light microscopy following DNA extraction.


Assuntos
Anoplura , Ftirápteros , Animais , Arvicolinae , Feminino , Gerbillinae , Masculino , Mamíferos , Microscopia
6.
Mol Phylogenet Evol ; 174: 107556, 2022 09.
Artigo em Inglês | MEDLINE | ID: mdl-35738542

RESUMO

The avian feather louse Philopterus-complex (Phthiraptera: Ischnocera: Philopteridae) currently contains 12 genera that have been grouped together because of shared morphological characteristics. Although previously lumped into a single genus (Philopterus), more recent morphological treatments have separated the group into several different genera. Here we evaluate the status of these genera using DNA sequence data from 118 ingroup specimens belonging to ten genera in the Philopterus-complex: Australophilopterus Mey, 2004, Cinclosomicola Mey 2004, Clayiella Eichler, 1940, Corcorides Mey, 2004, Mayriphilopterus Mey, 2004, Paraphilopterus Mey 2004, Philopteroides Mey 2004, Philopterus Nitzsch, 1818, Tyranniphilopterus Mey, 2004, and Vinceopterus Gustafsson, Lei, Chu, Zou, and Bush, 2019. Our sampling includes 97 new louse-host association records. Our analyses suggest that the genus Debeauxoecus Conci, 1941, parasitic on pittas (Aves: Pittidae), is outside of the Philopterus-complex, and that there is strong support for the monophyly of a group containing the remaining genera from the complex. Some diverse genera, such as Philopterus (sensu stricto) and Mayriphilopterus are supported as monophyletic, whereas the genera Australophilopterus, Philopteroides, and Tyranniphilopterus are not. The present study is the largest phylogenetic reconstruction of avian lice belonging to the Philopterus-complex to date and suggests that further generic revision is needed in the group to integrate molecular and morphological information.


Assuntos
Anoplura , Doenças das Aves , Iscnóceros , Passeriformes , Ftirápteros , Animais , Doenças das Aves/genética , Doenças das Aves/parasitologia , Plumas , Iscnóceros/anatomia & histologia , Iscnóceros/genética , Passeriformes/parasitologia , Ftirápteros/genética , Filogenia
7.
Zootaxa ; 5091(3): 477-486, 2022 Jan 14.
Artigo em Inglês | MEDLINE | ID: mdl-35391235

RESUMO

We describe and illustrate a new species of sucking louse, Hoplopleura tunneya new species, from the Australian pale field rat, Rattus tunneyi Thomas (Rodentia: Muridae). Currently, 22 species of the genus Hoplopleura Enderlein, 1904 (Phthiraptera: Anoplura: Hoplopleuridae) are known from Australian endemic rodents. Among the seven new endemic rodent species of the genus Rattus in Australia, R. tunneyi is one of five hosts to Hoplopleura lice. In addition, we give a list of all the species of Hoplopleura known from Australian endemic rodents. Including the introduced species Polyplax spinulosa, the total number of sucking louse species known from Australian endemic rodents is now 24.


Assuntos
Anoplura , Ftirápteros , Animais , Austrália/epidemiologia , Espécies Introduzidas , Muridae , Neópteros , Ratos , Roedores
8.
An Acad Bras Cienc ; 94(suppl 1): e20210566, 2022.
Artigo em Inglês | MEDLINE | ID: mdl-35384974

RESUMO

Through evolutionary time, seal lice have developed morphological, behavioral, and ecological adaptations to cope with the amphibious lifestyle of their hosts in a co-evolutionary process. Consequently, the dynamics of lice populations are determined by seals behavior. We aim to study the effects of host sex, age class, year, and sampling location, on the prevalence and mean abundance of Antarctophthirus carlinii, on Weddell seals (WS) Leptonychotes wedelli. The study was conducted at two sites in the Antarctic Peninsula, namely, Marambio/Seymour Island (MI) and the Danco Coast (DC). We collected lice from 71 WS: 33 from MI, during the reproductive season, and 38 from DC, during the molting season, between 2014 and 2017. According to our analyses, host age class and sex were the variables that affected prevalence levels of lice on WS. Whereas, age class, year, site, and sex affected lice mean abundance. Juveniles presented higher prevalence and mean abundance than adults, possibly acting as reservoirs for lice as they move through different colonies until they reach reproductive age. Concurrently, seals during molting season were more infested. Unlike nursing, during the molting season seals spend much time ashore forming mixed groups that favor both egg development and lice transmission.


Assuntos
Anoplura , Focas Verdadeiras , Aclimatação , Animais , Regiões Antárticas , Prevalência
9.
BMC Genomics ; 23(1): 283, 2022 Apr 08.
Artigo em Inglês | MEDLINE | ID: mdl-35395774

RESUMO

BACKGROUND: The mitochondrial (mt) genomes of 15 species of sucking lice from seven families have been studied to date. These louse species have highly dynamic, fragmented mt genomes that differ in the number of minichromosomes, the gene content, and gene order in a minichromosome between families and even between species of the same genus. RESULTS: In the present study, we analyzed the publicly available data to understand mt genome fragmentation in seal lice (family Echinophthiriidae) and gorilla louse, Pthirus gorillae (family Pthiridae), in particular the role of minichromosome split and minichromosome merger in the evolution of fragmented mt genomes. We show that 1) at least three ancestral mt minichromosomes of sucking lice have split in the lineage leading to seal lice, 2) one minichromosome ancestral to primate lice has split in the lineage to the gorilla louse, and 3) two ancestral minichromosomes of seal lice have merged in the lineage to the northern fur seal louse. Minichromosome split occurred 15-16 times in total in the lineages leading to species in six families of sucking lice investigated. In contrast, minichromosome merger occurred only four times in the lineages leading to species in three families of sucking lice. Further, three ancestral mt minichromosomes of sucking lice have split multiple times independently in different lineages of sucking lice. Our analyses of mt karyotypes and gene sequences also indicate the possibility of a host switch of crabeater seal louse to Weddell seals. CONCLUSIONS: We conclude that: 1) minichromosome split contributes more than minichromosome merger in mt genome fragmentation of sucking lice, and 2) mt karyotype comparison helps understand the phylogenetic relationships between sucking louse species.


Assuntos
Anoplura , Genoma Mitocondrial , Animais , Anoplura/genética , Ordem dos Genes , Gorilla gorilla/genética , Filogenia
10.
Parasit Vectors ; 15(1): 73, 2022 Mar 05.
Artigo em Inglês | MEDLINE | ID: mdl-35248159

RESUMO

BACKGROUND: The human louse (Pediculus humanus) is a haematophagous ectoparasite that is intimately related to its host. It has been of great public health concern throughout human history. This louse has been classified into six divergent mitochondrial clades (A, D, B, F, C and E). As with all haematophagous lice, P. humanus directly depends on the presence of a bacterial symbiont, known as "Candidatus Riesia pediculicola", to complement their unbalanced diet. In this study, we evaluated the codivergence of human lice around the world and their endosymbiotic bacteria. Using molecular approaches, we targeted lice mitochondrial genes from the six diverged clades and Candidatus Riesia pediculicola housekeeping genes. METHODS: The mitochondrial cytochrome b gene (cytb) of lice was selected for molecular analysis, with the aim to identify louse clade. In parallel, we developed four PCR primer pairs targeting three housekeeping genes of Candidatus Riesia pediculicola: ftsZ, groEL and two regions of the rpoB gene (rpoB-1 and rpoB-2). RESULTS: The endosymbiont phylogeny perfectly mirrored the host insect phylogeny using the ftsZ and rpoB-2 genes, in addition to showing a significant co-phylogenetic congruence, suggesting a strict vertical transmission and a host-symbiont co-speciation following the evolutionary course of the human louse. CONCLUSION: Our results unequivocally indicate that louse endosymbionts have experienced a similar co-evolutionary history and that the human louse clade can be determined by their endosymbiotic bacteria.


Assuntos
Anoplura , Pediculus , Animais , Anoplura/genética , Evolução Biológica , Genes Mitocondriais , Humanos , Pediculus/microbiologia , Filogenia
11.
Trop Anim Health Prod ; 54(1): 66, 2022 Jan 18.
Artigo em Inglês | MEDLINE | ID: mdl-35041093

RESUMO

The cattle and buffalo farm practices have been adopted differently by farmers in India but the infestation of ectoparasites including louse has been advocated in high population of animals across the country. The aim of this study was to identify the louse morphologically and determine the in vitro efficacy of the insecticides deltamethrin, cypermethrin and flumethrin against the buffalo louse, Haematopinus tuberculatus. The present research work was conducted using lice collected from organized buffalo dairy farms of Mhow block, Indore district of Madhya Pradesh, India. The adult's lice were collected from heavily infested regions of the body and tail of buffaloes. Some of the collected adult's lice were preserved for morphological identification in 70% alcohol. Briefly, in vitro treated surface bioassay utilizing a cloth rectangle that allows lice to move freely has been used. The concentrations were prepared as 30, 60, 90 and 120 ppm for deltamethrin and flumethrin, whereas for cypermethrin, 100, 200, 300 and 400 ppm concentrations were prepared in distilled water. The 600 µl of each concentration was spread evenly over a cloth rectangle held in the bottom of a Petri plate. Ten adult lice were used for each concentration in triplicate (n = 30) and the same is maintained for control. The vitality of the louse was assessed at various intervals: 30, 60, 120, 180 and 240 min. The lousicidal efficacy was determined by using in vitro bioassays with deltamethrin, cypermethrin and flumethrin. It is observed that as the concentration of insecticides increases with exposure time, mortality of lice is also increased. The current study reveals that cypermethrin and flumethrin were effective in their recommended doses but in the case of deltamethrin, the lice showed a low level of resistance. Furthermore, this type of study on buffalo louse has not conducted in Mhow region of Madhya Pradesh where heavy infestation of lice occurs on buffalo.


Assuntos
Anoplura , Doenças dos Bovinos , Inseticidas , Infestações por Piolhos , Piretrinas , Animais , Bovinos , Infestações por Piolhos/veterinária , Nitrilas
12.
Zootaxa ; 5047(1): 45-52, 2021 Sep 28.
Artigo em Inglês | MEDLINE | ID: mdl-34811010

RESUMO

A new species of the bark louse genus Clematoscenea Enderlein, 1907, namely Clematoscenea biprocessus sp. n., is described from Xizang Autonomous Region, China. The new species can be diagnosed by the forewing with a nearly V-shaped brown marking on proximal half in female but hyaline on corresponding region in male, and by the abdomen dorsally with a yellow band. Keys to species of Clematoscenea based on male and female characters are also provided.


Assuntos
Anoplura , Casca de Planta , Animais , China , Neópteros
13.
Mol Phylogenet Evol ; 165: 107297, 2021 12.
Artigo em Inglês | MEDLINE | ID: mdl-34438049

RESUMO

Parasite diversification is influenced by many of the same factors that affect speciation of free-living organisms, such as biogeographic barriers. However, the ecology and evolution of the host lineage also has a major impact on parasite speciation. Here we explore the interplay between biogeography and host-association on the pattern of diversification in a group of ectoparasitic lice (Insecta: Phthiraptera: Penenirmus) that feeds on the feathers of woodpeckers, barbets, and honeyguides (Piciformes) and some songbirds (Passeriformes). We use whole genome sequencing of 41 ingroup and 12 outgroup samples to develop a phylogenomic dataset of DNA sequences from a reference set of 2395 single copy ortholog genes, for a total of nearly four million aligned base positions. The phylogenetic trees resulting from both concatenated and gene-tree/species-tree coalescent analyses were nearly identical and highly supported. These trees recovered the genus Penenirmus as monophyletic and identified several major clades, which tended to be associated with one major host group. However, cophylogenetic analysis revealed that host-switching was a prominent process in the diversification of this group. This host-switching generally occurred within single major biogeographic regions. We did, however, find one case in which it appears that a rare dispersal event by a woodpecker lineage from North America to Africa allowed its associated louse to colonize a woodpecker in Africa, even though the woodpecker lineage from North America never became established there.


Assuntos
Anoplura , Aves Canoras , Animais , Plumas , Interações Hospedeiro-Parasita/genética , Filogenia , Aves Canoras/genética , Aves Canoras/parasitologia
14.
Parasitol Res ; 120(10): 3611-3618, 2021 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-34435254

RESUMO

Rickettsioses are distributed among a variety of hematophagous arthropods, and represent an emergent threat. The presence of rickettsial bacteria in ectoparasites collected from pigs from Argentina is still unknown. This study investigated the presence and identity of Rickettsia spp. in fleas, Pulex irritans, and sucking lice, Haematopinus suis, of domestic and feral pigs, Sus scrofa, from Central-Northern Argentina, through the genes gltA and ompB. Rickettsial bacteria were detected in 50% of fleas and 24% of lice. The BLASTn analysis of the ompB gene fragments in P. irritans samples showed identities 99% and 100% with R. felis. Positive samples of H. suis were 99% similar with species from the spotted fever group, future amplifications of a more polymorphic fragment of the ompB gene will allow to corroborate the identity of the Rickettsia species present in these lice samples. The Rickettsia spp. reported in the present study are having eventually been associated with cases of human diseases, and the circulation of these agents in arthropods has already been reported in several countries. Therefore, the identification of circulating pathogenic agents, such as reported in this study, is crucial for development of preventive measures for the control of ectoparasite-borne rickettsiosis diseases. Further studies, using serology techniques, will be allow to explore the ability of pigs as a possible Rickettsia reservoir and its role as part of transmission cycle of Rickettsia spp. in the studied scenarios.


Assuntos
Anoplura , Rickettsia , Sifonápteros , Animais , Anoplura/microbiologia , Argentina , Rickettsia/genética , Sifonápteros/microbiologia , Sus scrofa , Suínos
15.
BMC Genomics ; 22(1): 598, 2021 Aug 06.
Artigo em Inglês | MEDLINE | ID: mdl-34362306

RESUMO

BACKGROUND: The typical single-chromosome mitochondrial (mt) genome of animals has fragmented into multiple minichromosomes in the lineage Mitodivisia, which contains most of the parasitic lice of eutherian mammals. These parasitic lice differ from each other even among congeneric species in mt karyotype, i.e. the number of minichromosomes, and the gene content and gene order in each minichromosome, which is in stark contrast to the extremely conserved single-chromosome mt genomes across most animal lineages. How fragmented mt genomes evolved is still poorly understood. We use Polyplax sucking lice as a model to investigate how tRNA gene translocation shapes the dynamic mt karyotypes. RESULTS: We sequenced the full mt genome of the Asian grey shrew louse, Polyplax reclinata. We then inferred the ancestral mt karyotype for Polyplax lice and compared it with the mt karyotypes of the three Polyplax species sequenced to date. We found that tRNA genes were entirely responsible for mt karyotype variation among these three species of Polyplax lice. Furthermore, tRNA gene translocation observed in Polyplax lice was only between different types of minichromosomes and towards the boundaries with the control region. A similar pattern of tRNA gene translocation can also been seen in other sucking lice with fragmented mt genomes. CONCLUSIONS: We conclude that inter-minichromosomal tRNA gene translocation orientated towards the boundaries with the control region is a major contributing factor to the highly dynamic mitochondrial genome organization in the parasitic lice of mammals.


Assuntos
Anoplura , Genoma Mitocondrial , Animais , Anoplura/genética , Genoma Mitocondrial/genética , Cariótipo , Mamíferos , Filogenia , RNA de Transferência/genética
16.
Med Vet Entomol ; 35(4): 658-662, 2021 12.
Artigo em Inglês | MEDLINE | ID: mdl-34268793

RESUMO

Seals (Phocidae) undergo an annual cycle of moulting that implies hair regeneration, and in the case of southern elephant seals, it also involves the superficial strata of the epidermis. Therefore, surviving the moulting period is crucial for their obligate and permanent ectoparasites. Throughout evolutionary time, sucking lice (Echinophtiriidae) have developed morphological, behavioural and ecological adaptations to cope with the amphibious lifestyle of their hosts. Lepidophthirus macrorhini, the Southern elephant seal louse species, faces the additional challenge of surviving attached to the host during the moulting period. Since lice live on the skin, L. macrorhini has developed a unique survival strategy by piercing the skin of their host, thus keeping them protected from moulting. During fieldwork in Patagonia and Antarctica, skin samples with lice within were collected for histological analysis to assess whether these parasites caused damage to the host. Lice generate an inflammatory process in the host's dermis, and these lesions could alter the normal chemical and mechanical protective properties of the skin facilitating secondary infections. Further studies that analyse the potential pathogens in those skin lesions are necessary to properly assess the real impact of ectoparasites on their host health.


Assuntos
Anoplura , Focas Verdadeiras , Animais , Muda , Focas Verdadeiras/parasitologia , Focas Verdadeiras/fisiologia , Pele
17.
Ann Parasitol ; 67(1): 107-109, 2021.
Artigo em Inglês | MEDLINE | ID: mdl-34022780

RESUMO

Morphological anomalies in sucking lice (Phthiraptera: Anoplura) have been discussed sporadically, mainly when the changes were considerable, such as in the structure of the reproductive organs or pleural plates, and have concerned the most commonly-studied species. An analysis of 376 specimens from three species of the genus Hoplopleura (H. acanthopus, H. affinis, H. edentula) identified 13 individuals with changes in the number and size of the setae on the sternal plates of the abdomen and irregularities in the structure of the plate itself (3.5% of the collection). The above anomalies do not invalidate the taxonomic decisions.


Assuntos
Anoplura , Animais , Abelhas , Humanos
18.
Vector Borne Zoonotic Dis ; 21(5): 342-350, 2021 05.
Artigo em Inglês | MEDLINE | ID: mdl-33728990

RESUMO

Lice are blood-sucking insects that are of medical and veterinary significance as parasites and vectors for various infectious agents. More than half of described blood-sucking lice species are found on rodents. Rodents are important hosts of several Bartonella and Rickettsia species, and some of these bacteria are characterized as human pathogens in Europe. Rodent ectoparasites, such as fleas and ticks, are important vectors of Bartonella spp. and Rickettsia spp., but knowledge about the presence of these bacteria in lice is limited. The aim of this study was to determine the prevalence of Bartonella and Rickettsia bacteria in lice collected from rodents in Slovakia. The ectoparasites were collected from small rodents captured from 2010 to 2015 at four different sites in eastern Slovakia. The presence of Bartonella and Rickettsia species in lice samples was screened by real-time PCR, targeting ssrA and gltA genes, respectively. The molecular characterization of the Bartonella strains was based on sequence analysis of partial rpoB and intergenic spacer (ITS) genes, and of the Rickettsia species on sequence analysis of the gltA gene. A total of 1074 lice of seven species were collected from six rodent species. Bartonella DNA was detected in Hoplopleura affinis (collected from Apodemus agrarius, Apodemus flavicollis, and Myodes glareolus), Polyplax serrata (from A. agrarius), and Hoplopleura sp. (from A. flavicollis). Sequence analysis revealed that the Bartonella strains belonged to the Bartonella coopersplainsensis, Bartonella tribocorum, and Bartonella taylorii genogroups. Rickettsia DNA was detected in H. affinis and P. serrata collected from A. agrarius. Sequence analysis revealed two Rickettsia species: Rickettsia helvetica and Rickettsia sp. The results of the study confirm the presence of Bartonella spp. and Rickettsia spp. in lice collected from rodents.


Assuntos
Anoplura , Bartonella , Rickettsia , Sifonápteros , Animais , Bartonella/genética , Murinae , Rickettsia/genética
19.
Zootaxa ; 4915(1): zootaxa.4915.1.11, 2021 Jan 20.
Artigo em Inglês | MEDLINE | ID: mdl-33756591

RESUMO

Packard (1873) described Menopon picicola as a new species, based on ten lice taken from two species of woodpeckers of the genus Picoides-P. arcticus (Swainson, 1832) and P. dorsalis Baird, 1858-collected in Wyoming, U.S.A. in August 1872. Considering that (1) Packard (1873) neither designated a holotype nor a single type host, (2) his type material is most likely lost, and (3) no additional lice from either of those two species of Picoides have been reported in the literature, the taxonomic status of Menopon picicola has not been confirmed.


Assuntos
Amblíceros , Anoplura , Iscnóceros , Infestações por Piolhos , Ftirápteros , Animais , Aves , Infestações por Piolhos/veterinária
20.
J Med Entomol ; 58(3): 1157-1165, 2021 05 15.
Artigo em Inglês | MEDLINE | ID: mdl-33576393

RESUMO

We describe two new species of sucking lice in the genus Hoplopleura Enderlein, 1904 (Psocodea: Phthiraptera: Hoplopleuridae) from Australia: Hoplopleura gracilicaudatusa n. sp. from the eastern chestnut mouse Pseudomys gracilicaudatus (Gould) (Rodentia: Muridae), and Hoplopleura nanusa n. sp. from the western chestnut mouse Pseudomys nanus (Gould) (Rodentia: Muridae). Pseudomys Gray is the most speciose genus of rodents endemic to Australia with 24 species; however, only two Pseudomys species have been reported previously to be hosts of sucking lice. The description of the new species in the present study doubles the number of sucking louse species known to parasitize Pseudomys mice and increases the total number of sucking louse species known from endemic Australian rodents from 21 to 23. Pseudomys gracilicaudatus and P. nanus are closely related murines that diverged ~1 MYA with distinct and widely separated extant geographic distributions. The two new Hoplopleura species described in the present study share some morphological characters and likely co-evolved and co-speciated with their chestnut mouse hosts.


Assuntos
Distribuição Animal , Anoplura/classificação , Murinae/parasitologia , Animais , Anoplura/crescimento & desenvolvimento , Feminino , Interações Hospedeiro-Parasita , Masculino , Northern Territory , Ninfa/classificação , Ninfa/crescimento & desenvolvimento , Queensland
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