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2 edition of osystematic studies on the genus rhipicephalus: the R. snaguineus and R. simus groups (ixodoidea, ixodidae). found in the catalog.

osystematic studies on the genus rhipicephalus: the R. snaguineus and R. simus groups (ixodoidea, ixodidae).

Rupert George Pegram

osystematic studies on the genus rhipicephalus: the R. snaguineus and R. simus groups (ixodoidea, ixodidae).

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Published by Brunel University in Uxbridge .
Written in English


Edition Notes

ContributionsBrunel University. Department of Biology.
The Physical Object
Pagination160p. :
Number of Pages160
ID Numbers
Open LibraryOL14473345M

Until recently, R. microplus and four other species were separated into their own genus, Boophilus, but a number of analyses, particularly molecular ones, have indicated that Boophilus is nested within Rhipicephalus (e.g. Beati & Keirans ) and the genera were synonymised by Murrell & . The golden jackal (Canis aureus) is a wolf-like canid that is native to Southeast Europe, Southwest Asia, South Asia, and regions of Southeast ed with the Arabian wolf, which is the smallest of the gray wolves (Canis lupus), the jackal is smaller and possesses shorter legs, a shorter tail, a more elongated torso, a less-prominent forehead, and a narrower and more pointed muzzle. The black-backed jackal (Canis mesomelas or Lupulella mesomelas) is a canine native to eastern and southern regions are separated by roughly kilometers. One region includes the southernmost tip of the continent, including South Africa, Namibia, Botswana, and other area is along the eastern coastline, including Kenya, Somalia, Djibouti, Eritrea, and Ethiopia.


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osystematic studies on the genus rhipicephalus: the R. snaguineus and R. simus groups (ixodoidea, ixodidae). by Rupert George Pegram Download PDF EPUB FB2

In this, our second study on the biosystematics of the Rhipicephalus sanguineus group, we consider an additional five species found in the Afrotropical region, namely R. sanguineus, R. camicasi, R. guilhoni, R. moucheti and R. bergeoni. Cross-breeding experiments have shown that R. sanguineus (Latreille, ) sensu stricto is genetically distinct from R.

camicasi Morel, Mouchet & Cited by: Abstract. For many years the biosystematic status of several species in the Rhipicephalus sanguineus group has been confused, with the result that they have often been misidentified. Over the years some 18 of these species have been synonymised with R. sanguineus (Latreille, ) itself.

More recently four new species in the group have been described: R. guilhoni Morel & Vassiliades, ; R Cited by: According to Walker () the genus Rhipicephalus is the largest genus in southern Africa, and it is the fourth largest in the family Ixodidae (Walker et al., ), and there are above 70 tick.

The mitochondrial genome reported for R. simus in the current study, clusters in a clade with R. sanguineus and R. turanicus as previously observed (Barker and Murrell, ).

This paper presents a general account of the tick genus Rhipicephalus and discusses its medical and veterinary importance and the control measures which should be adopted when infestation occurs. The features which distinguish the genus from other genera of Ixodidae are listed and the distribution of the 40 known species is briefly discussed.

sanguineus, which is almost cosmopolitan in the Author: F. Zumpt. The high percentage of similarity (%) observed between R. sanguineus and R. turanicus sequences would suggest that these species recently diverged within the Rhipicephalus genus. Pegram RG () Biosystematic studies on the genus Rhipicephalus: the R.

sanguineus and the R. simus groups (Ixodoidea, Ixodidae), pp + 90 plates. Ph.D. Thesis, Brunel University, London Google Scholar. Studies demonstrated differences of specific Rhipicephalus (Boophilus) spp. life cycle in different ecological zones, where varying degrees of climatic conditions affect each phase of the tick life cycle (LEGG, ; LONDT & ARTHUR, ) and changes in these factors can difficult precise establishing of the life cycles of R.

microplus and R. australis. Ticks of the Rhipicephalus sanguineus species complex osystematic studies on the genus rhipicephalus: the R. snaguineus and R. simus groups book be vector of various pathogens including Rickettsia conorii (the etiological agent of the Mediterranean spotted fever) and Coxiella burnetii (cause of the Query (Q) fever).R.

sanguineus ticks have been imported in several parts of central and northern Europe, especially in environments such as kennels and houses providing the.

Additionally, the phenotypic resembling R. sanguineus s.l. and Rhipicephalus turanicus (Pomerantsev) are here represented by nine clades, of which none of the R. turanicus assemblages appeared as.

The largest rhipicephaline genus, Rhipicephalus, was represented by ticks from six of the species groups, the second largest genus, Dermacentor, by species from two of three of its subgenera, and. 1. Introduction. The genus Rhipicephalus Koch, (Acari: Ixodidae) is the fourth largest in the family Ixodidae (Walker et al., ) and one of the most important genera of hard comprises 82 species (Guglielmone et al., ), most of which are widely distributed in sub-Saharan Africa (Walker et al., ).Some of the most common and economically important species in the genus.

The genus Rhipicephalus has been subdivided in groups and selected genera and each Rhipicephalus group (sanguineus, simus, pra-vus, evertsi, appendiculatus) were represented by at least 2 taxa to avoid R.

appendiculatus, R. sanguineus, and Rhipicephalus turanicus) to evaluate the expected level of intraspecific variability of the. The mitochondrial genome reported for R.

simus in the current study, clusters in a clade with R. sanguineus and R. turanicus as previously observed (Barker and Murrell, ). In Dermacentor, Dermacentor nuttalli and Dermacentor silvarum belong to the same species, as previously suggested (Kulakova et al., ).

The genus Rhipicephalus has been subdivided in groups and selected genera and each Rhipicephalus group (sanguineus, simus, pra-vus, evertsi, appendiculatus) were represented by at least 2 taxa to avoid R.

appendiculatus, R. sanguineus, and Rhipicephalus turanicus) to evaluate the expected level of intraspecific variability of the. Background Babesiosis is a parasitic vector-borne disease of increasing public health importance. Since the first human case was reported inzoonotic species have been reported on nearly every continent.

Zoonotic Babesia is vectored by Ixodes ticks and is commonly transmitted in North America by Ixodes scapularis, the tick species responsible for transmitting the pathogens that. The R. simus group is included in the R.

sanguineus group. Rhipicephalus appendiculatus does not appear to cluster with the 2 other members of the group, R. maculatus and R. pulchellus. The respective order of branching within the Rhipicephalus lineages is not fully resolved. More specimens from the group R.

sanguineus are needed to clarify if this group represents a valid individualized species, but, so far, the data support this hypothesis.

For the species in the group R. sanguineus, the clade distribution shows differences between the COI and the 12S trees, which does not happen in the subgenus Boophilus.

In the. A systematic analysis of generic/subgeneric relationships in the ixodid lineage Metastriata was conducted based on 82 structural and developmental characters, 15 of which have multiple states. Results of the analysis show considerable agreement with current classifications of the Ixodidae, including good support for monophyly of the Metastriata, the genera Ixodes and.

This is an interim report which deals with tick-borne typhus occurring among 'troops and prisoners of war in East Africa during the years It is of special interest because of the thorough manner in which the disease was studied by laboratory methods and because it is the most striking example yet recorded of what may happen when " islands " infested by infected ticks are entered by.

The Rhipicephalus sanguineus (Latreille) complex (Acari:Ixodidae) is composed of species with intra- and interspecific morphological variation that make their diagnosis difficult.

In the present study, male specimens of the R. sanguineus complex were collected from dogs in six districts of three regions of Brazil and submitted to molecular and scanning electron microscopy (SEM) analyses. Coxiella and Rhipicephalus mitochondrial lineages revealed an almost complete co-cladogenesis signature between ixodid lineages and endosymbiont strains, eviden.

Introduction. The brown dog tick, Rhipicephalus sanguineus (Latreille) is one of the most widely distributed ticks in the world, found globally between 50°N and 30°S latitudes (Walker et al. ).This cosmopolitan tick infests domestic and wild mammals, and incidentally man.

Its immature stages may infest rodents and other small mammals (Hoogstraal ), but canines and especially. Engorged female brown dog tick Rhipicephalus sanguineus, copyright Felipe Mateo and Cristina. Belongs within: Ixodidae. Rhipicephalus, the brown ticks, is a genus of ticks that is most diverse in Africa, though the brown dog tick R.

sanguineus is perhaps the world's most widespread tick. Molecular analysis indicates that the cattle ticks of the subgenus Boophilus should also be classified. Brown dog ticks are distributed world-wide, and their systematics and phylogeny are the subject of an ongoing debate.

The present study evaluates the reproductive compatibility between Rhipicephalus sanguineus ticks from North America, Israel, and Africa. Female ticks of the parent generation were mated with males from the same and alternate colonies.

Every pure and hybrid. Dogs A male Amhlyomma variegatum, 2 female Boophilus annulatus, 17 Hyalomma a. anatolicum, 8 H. dromedarii, 1 H. impeltatum, 5 H. rufipes, 2 Rhipicephalus e.

evertsi, 2 R. simus, and 16 R, s. sanguin- eus parasitized the few dogs examined at Ta'izz, indicating a remark- ably high rate and variety of tick infestation in this area.

Rhipicephalus simus, “Glossy tick” [12], are found in northern [45], eastern [47], central [41]. Of the genus Amblyomma four species that commonly infest cattle includes Amblyomma variegatum, A.

gemma, A. lepidum and A. cohaerens and are known to exist in Ethiopia [48]. In the United States Naval Medical Research Unit at Cairo conducted a brief medical survey of the Yemen. The results of this survey have been published in a large series of papers and the present paper deals with the ticks collected in the Yemen and the surrounding Arab the 9, specimens of ticks collected in the Yemen, more than 80% belonged to the genus Hyalomma which are.

Similarly, two studies in Brazil obtained a R. rickettsii in Rhipicephalus sanguineus and Amblyomma cajennense tick colonies experimentally infected with an in vitro-cultured strain of R. rickettsii (26, 27), while another Brazilian study reported a % FIR of R.

rickettsii in naturally infected Rhipicephalus sanguineus ticks. Clark KL1, Leydet BF, Threlkeld C. Author information. 1Department of Public Health, University of North Florida, 1 UNF Drive, Jacksonville, FLUSA. Abstract.

The present study investigated the cause of illness in human patients primarily in the southern USA with suspected Lymedisease based on erythema migrans-like skin lesions and/or symptoms consistent with early localized or late. This banner text can have markup. web; books; video; audio; software; images; Toggle navigation.

The following is based on the authors' summary: The distribution of certain species of ticks in relation to African Coast fever in cattle in Kenya is briefly reviewed.

It was thought that the passage of Theileria parva through different species of ticks might throw light on some of the sporadic outbreaks of the disease and on the peculiar character of some of the cases. variabilis, Hyalomma excavatum, Ixodes ricinus, Rhipicephalus bursa, R.

sanguineus and R. simus (Marchette and Stiller, ) but mostly Boophilus microplus causing Anaplasmosis (TFRC, ). Various other biting arthropods have been implicated as mechanical vectors. Experimental transmission has been demonstrated with a number of species of.

Studies in golden jackals from arid regions (northern Africa and Middle East) demonstrated the predominant presence of ticks from the genus Rhipicephalus: R. sanguineus (s.l.), R. turanicus and R. leporis. Surprisingly, there are no reports of ticks on golden jackals in sub-Saharan Africa.

Mites. Ticks and tick-borne diseases (TTBDis) are a major constraint to the health and production of small ruminants in Pakistan. Despite being the subject of intermittent studies over the past few decades, comprehensive information on the epidemiology and control of TTBDis is lacking.

Herein, we have systematically reviewed the current knowledge on TTBDis of small ruminants in Pakistan. Critical. The primary reservoirs for R. rickettsii are ticks, and the most common tick vectors in Central and South America are the species Rhipicephalus sanguineus and Amblyomma cajennense.

The most common tick vector in the eastern USA is the American dog tick, Dermacentor variabilis, and in the west, the Rocky Mountain wood tick, D. andersoni. The. Amblyomma hebraeum was the predominant species, followed by R. microplus. Rhipicephalus appendiculatus, R. simus and R.

zambeziensis were also identified. Amblyomma hebraeum was present throughout the year, with peak activity of adults in summer (November) and nymphs in winter (July). The ratio between adults and nymphs ranged from in. helvetica, R. felis, and R.

akari group. SFG rickettsioses occur worldwide and may cause serious diseases in humans. They are transmitted to people by arthropod vectors, such as ticks, fleas, and lice. A number of spotted fever group rickettsial pathogens have been reported across the world.

These include: Rickettsia aeschlimannii, R. africae, R. The occurrence of R. sanguineus s.s. in Algeria is an interesting result given that most R.

sanguineus in Africa cluster among the tropical lineage. This finding should prompt further investigation by exhaustive studies across Algerian territory. Such data can be useful to understand the dispersal route of R.

sanguineus s.s. from Europe to. A list is given of the names of 7 species of Insectívora and 26 Rodentia found in the Léopoldville area of the Belgian Congo. Am domestic rodents examined, no specimen of the brown rat (Ratius norvegicus) was seen, but there were four forms of the black rat, namely: R.

rattus (1, ), R. alexandrinus (14, ), orus (12, ) and R. wroughtoni (). The species of Rhipicephalus which used to be assigned to a separate genus Boophilus because they share a one host type of parasitic behaviour (i.e. moulting from larva to nymph and from nymph to adult takes places on the same host animal), the anal groove is only faintly or not visible, and the males are abnormally small, are R.

annulatus (the.Following the discovery of establishment of the African tortoise tick Amblyomma marmoreum in Florida, the present study was undertaken to determine the extent of introduction of exotic ticks into Florida on imported reptiles.

Exotic ticks were identified on 29 (91%) of 32 reptile premises in 18 counties of Florida.In a recent study, the prevalence of Rh. sanguineus infestation in dogs was reported to be 80% in Lokoja, Kogi State (south-central Nigeria) compared to only about % in Borno, in the northeastern part of Nigeria where the Rhipicephalus (Boophilus) cattle ticks are more prevalent [21,45].

Most of the dogs examined in Kogi state were used.