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Author |
Giangaspero, A.; Traversa, D.; Otranto, D. |
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Title |
[Ecology of Thelazia spp. in cattle and their vectors in Italy] |
Type |
Journal Article |
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Year |
2004 |
Publication |
Parassitologia |
Abbreviated Journal |
Parassitologia |
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Volume |
46 |
Issue  |
1-2 |
Pages |
257-259 |
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Keywords |
Animals; Cattle/parasitology; Cattle Diseases/epidemiology/*parasitology/transmission; Disease Transmission, Horizontal; Dog Diseases/epidemiology/parasitology/transmission; Dogs/parasitology; Ecosystem; Eye Infections, Parasitic/epidemiology/transmission/*veterinary; Horse Diseases/epidemiology/parasitology/transmission; Horses/parasitology; Humans; Insect Vectors/*parasitology; Italy/epidemiology; Muscidae/*parasitology; Species Specificity; Spirurida Infections/epidemiology/transmission/*veterinary; Thelazioidea/classification/*isolation & purification |
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Abstract |
The genus Thelazia (Spirurida, Thelaziidae) includes a cosmopolitan group of eyeworm spirurids responsible for ocular infections in domestic and wild animals and transmitted by different species of muscids. Bovine thelaziosis is caused by Thelazia rhodesi Desmarest 1828, Thelazia gulosa Railliet & Henry 1910, and Thelazia skrjabini Erschow 1928, which occur in many countries; T. gulosa and T. skrjabini have been reported mainly in the New World, while T. rhodesi is particularly common in the Old World. In Italy, T. rhodesi was reported in southern regions a long time ago and, recently, T. gulosa and T. skrjabini have been identified in autochthonous cattle first in Apulia and then in Sardinia. Thirteen species of Musca are listed as intermediate hosts of eyeworms, but only Musca autumnalis and Musca larvipara have been demonstrated to act as vectors of Thelazia in the ex-URSS, North America, ex-Czechoslovakia and more recently in Sweden. In Italy, after the reports of T. gulosa and T. skrjabini in southern regions, the intermediate hosts of bovine eyeworms were initially only suspected as the predominant secretophagous Muscidae collected from the periocular region of cattle with thelaziosis were the face flies, M. autumnalis and M. larvipara, followed by Musca osiris, Musca tempestiva and Musca domestica. The well-known constraints in the identification of immature eyeworms to species by fly dissection and also the time-consuming techniques used constitute important obstacles to epidemiological field studies (i.e. vector identification and/or role, prevalence and pattern of infection in flies, etc.). Molecular studies have recently permitted to further investigations into this area. A PCR-RFLP analysis of the ribosomal ITS-1 sequence was developed to differentiate the 3 species of Thelazia (i.e. T. gulosa, T. rhodesi and T. skrjabini) found in Italy, then a molecular epidemiological survey has recently been carried out in field conditions throughout five seasons of fly activity and has identified the role of M. autumnalis, M. larvipara, M. osiris and M. domestica as vectors of T. gulosa and of M. autumnalis and M. larvipara of T. rhodesi. Moreover, M. osiris was described, for the first time, to act as a vector of T. gulosa and M. larvipara of T. gulosa and T. rhodesi. The mean prevalence in the fly population examined was found to be 2.86%. The molecular techniques have opened new perspectives for further research on the ecology and epidemiology not only of Thelazia in cattle but also of other autochthonous species of Thelazia which have been also recorded in Italy, such as Thelazia callipaeda, which is responsible for human and canid ocular infection and Thelazia lacrymalis, the horse eyeworm whose epidemiological molecular studies are in progress. |
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Dipartimento PR.I.M.E., Universita degli Studi di Foggia |
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Language |
Italian |
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Original Title |
Ecologia di Thelazia spp. e dei vettori in Italia |
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0048-2951 |
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Notes |
PMID:15305729 |
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no |
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Call Number |
Equine Behaviour @ team @ |
Serial |
2633 |
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Author |
Makarov, V.V.; Bakulov, I.A. |
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Title |
[Zoopathogenic arboviruses, their systematics and ecology] |
Type |
Journal Article |
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Year |
1975 |
Publication |
Veterinariia |
Abbreviated Journal |
Veterinariia |
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Volume |
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Issue |
11 |
Pages |
39-41 |
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Keywords |
Animals; Arboviruses/*classification/pathogenicity; Cattle; Deer; Ecology; Horses; Insect Vectors; Sheep; Swine; Turkeys; Viruses/*classification/pathogenicity |
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Language |
Russian |
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Original Title |
Zoopatogennye arbovirusy--sistematika i ekologiia |
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Abbreviated Series Title |
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Series Volume |
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Series Issue |
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Edition |
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ISSN |
0042-4846 |
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Notes |
PMID:814685 |
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no |
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Call Number |
Equine Behaviour @ team @ |
Serial |
2703 |
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Author |
Mellor, P.S. |
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Title |
African horse sickness: transmission and epidemiology |
Type |
Journal Article |
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Year |
1993 |
Publication |
Veterinary Research |
Abbreviated Journal |
Vet Res |
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Volume |
24 |
Issue |
2 |
Pages |
199-212 |
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Keywords |
Africa, Northern/epidemiology; African Horse Sickness/epidemiology/*transmission; African horse sickness virus/*physiology; Animals; Arachnid Vectors/microbiology; Ceratopogonidae/*microbiology; Culicidae/microbiology; Horses; Insect Vectors/*microbiology; Portugal/epidemiology; Spain/epidemiology; Ticks/microbiology |
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Abstract |
African horse sickness (AHS) virus causes a non-contagious, infectious, arthropod-borne disease of equines and occasionally of dogs. The virus is widely distributed across sub-Saharan African where it is transmitted between susceptible vertebrate hosts by the vectors. These are usually considered to be species of Culicoides biting midges but mosquitoes and/or ticks may also be involved to a greater or lesser extent. Periodically the virus makes excursions beyond its sub-Saharan enzootic zones but until recently does not appear to have been able to maintain itself outside these areas for more than 2-3 consecutive years at most. This is probably due to a number of factors including the apparent absence of a long term vertebrate reservoir, the prevalence and seasonal incidence of the vectors and the efficiency of control measures (vaccination and vector abatement). The recent AHS epizootics in Iberia and N Africa spanning as they do, 5 or more yr, seem to have established a new pattern in AHS virus persistence. This is probably linked to the continuous presence of adult C imicola in the area. Culicoides imicola is basically an Afro-Asiatic insect and prefers warm climates. Therefore its continuous adult presence in parts of Iberia and N Africa may be due to some recent moderations of the climate in these areas. |
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Address |
Institute for Animal Health, Pirbright Laboratory, Woking, Surrey, UK |
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English |
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Abbreviated Series Title |
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Series Volume |
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Series Issue |
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Edition |
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ISSN |
0928-4249 |
ISBN |
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Expedition |
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Conference |
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Notes |
PMID:8102076 |
Approved |
no |
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Call Number |
Equine Behaviour @ team @ |
Serial |
2359 |
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Author |
Fulhorst, C.F.; Hardy, J.L.; Eldridge, B.F.; Chiles, R.E.; Reeves, W.C. |
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Title |
Ecology of Jamestown Canyon virus (Bunyaviridae: California serogroup) in coastal California |
Type |
Journal Article |
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Year |
1996 |
Publication |
The American Journal of Tropical Medicine and Hygiene |
Abbreviated Journal |
Am J Trop Med Hyg |
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Volume |
55 |
Issue |
2 |
Pages |
185-189 |
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Keywords |
Aedes/virology; Animals; Antibodies, Viral/blood; California/epidemiology; Cattle; Cattle Diseases/epidemiology; Deer; Dog Diseases/epidemiology; Dogs; Encephalitis Virus, California/immunology/*isolation & purification; Encephalitis, California/epidemiology/*veterinary; Female; Horse Diseases/epidemiology; Horses; Insect Vectors/virology; Lagomorpha; Male; Neutralization Tests/veterinary; Peromyscus; Rodent Diseases/epidemiology; Sigmodontinae |
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Abstract |
This paper reports the first isolation of Jamestown Canyon (JC) virus from coastal California and the results of tests for antibody to JC virus in mammals living in coastal California. The virus isolation was made from a pool of 50 Aedes dorsalis females collected as adults from Morro Bay, San Luis Obispo County, California. The virus isolate was identified by two-way plaque reduction-serum dilution neutralization tests done in Vero cell cultures. Sera from the mammals were tested for antibody to JC virus by a plaque-reduction serum dilution neutralization method. A high prevalence of JC virus-specific antibody was found in horses and cattle sampled from Morro Bay. This finding is additional evidence for the presence of a virus antigenically identical or closely related to JC virus in Morro Bay and indicates that the vectors of the virus in Morro Bay feed on large mammals. A high prevalence of virus-specific antibody was also found in horses sampled from Marin and San Diego counties. This finding suggests that viruses antigenically identical or closely related to JC virus are geographically widespread in coastal California. |
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Address |
School of Public Health, University of California, Berkeley, USA |
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English |
Summary Language |
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Original Title |
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Abbreviated Series Title |
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Series Volume |
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Series Issue |
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Edition |
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ISSN |
0002-9637 |
ISBN |
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Notes |
PMID:8780458 |
Approved |
no |
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Call Number |
Equine Behaviour @ team @ |
Serial |
2656 |
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Author |
Bourdin, P.; Laurent, A. |
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Title |
[Ecology of African horsesickness] |
Type |
Journal Article |
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Year |
1974 |
Publication |
Revue d'Elevage et de Medecine Veterinaire des Pays Tropicaux |
Abbreviated Journal |
Rev Elev Med Vet Pays Trop |
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Volume |
27 |
Issue |
2 |
Pages |
163-168 |
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Keywords |
African Horse Sickness/*epidemiology/transmission; Animals; Disease Reservoirs/veterinary; Horses; Humans; Insect Vectors |
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Language |
French |
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Original Title |
Note sur l'ecologie de la peste equine africaine |
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Edition |
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ISSN |
0035-1865 |
ISBN |
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Notes |
PMID:4619907 |
Approved |
no |
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Call Number |
Equine Behaviour @ team @ |
Serial |
2710 |
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Author |
Scherer, W.F.; Dickerman, R.W. |
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Title |
Ecologic studies of Venezuelan encephalitis virus in southeastern Mexico. 8. Correlations and conclusions |
Type |
Journal Article |
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Year |
1972 |
Publication |
The American Journal of Tropical Medicine and Hygiene |
Abbreviated Journal |
Am J Trop Med Hyg |
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Volume |
21 |
Issue |
2 |
Pages |
86-89 |
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Keywords |
Animals; Birds; Cattle; Chiroptera; Cricetinae; Culex; Culicidae; *Disease Reservoirs; Ecology; Encephalitis Virus, Venezuelan Equine/immunology; Encephalitis Viruses/*isolation & purification; Encephalomyelitis, Equine/epidemiology/*etiology; Horses; Humans; *Insect Vectors; Mammals; Mexico; Mice; Opossums; Rats; Swine |
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English |
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ISSN |
0002-9637 |
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Notes |
PMID:4399844 |
Approved |
no |
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Call Number |
Equine Behaviour @ team @ |
Serial |
2721 |
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Author |
No authors listed |
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Title |
Workshop on the geographic spread of Aedes albopictus in Europe and the concern among public health authorities. Proceedings of a workshop held at the Istituto Superiore di Sanita, Rome, Italy, 19-20 December 1994 |
Type |
Conference Article |
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Year |
1995 |
Publication |
Parassitologia |
Abbreviated Journal |
Parassitologia |
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Volume |
37 |
Issue |
2-3 |
Pages |
87-90 |
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Keywords |
*Aedes/growth & development/parasitology/virology; African horse sickness virus; Animals; Commerce; Dengue Virus; Dirofilaria; Disease Reservoirs; Ecology; Europe; Humans; *Insect Vectors/growth & development/parasitology/virology; Italy; *Mosquito Control/methods/organization & administration; Public Health; Rift Valley fever virus |
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English |
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Original Title |
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Series Editor |
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Abbreviated Series Title |
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Series Volume |
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Series Issue |
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Edition |
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ISSN |
0048-2951 |
ISBN |
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Expedition |
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Notes |
PMID:8778669 |
Approved |
no |
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Call Number |
Equine Behaviour @ team @ |
Serial |
2659 |
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Author |
Venter, G.J.; Koekemoer, J.J.O.; Paweska, J.T. |
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Title |
Investigations on outbreaks of African horse sickness in the surveillance zone in South Africa |
Type |
Journal Article |
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Year |
2006 |
Publication |
Revue Scientifique et Technique (International Office of Epizootics) |
Abbreviated Journal |
Rev Sci Tech |
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Volume |
25 |
Issue |
3 |
Pages |
1097-1109 |
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Keywords |
African Horse Sickness/*epidemiology; African horse sickness virus/genetics/*isolation & purification; Animals; Ceratopogonidae/*virology; Disease Outbreaks/*veterinary; Horses; Insect Vectors/*virology; Prevalence; Sentinel Surveillance/veterinary; South Africa/epidemiology |
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Abstract |
Confirmed outbreaks of African horse sickness (AHS) occurred in the surveillance zone of the Western Cape in 1999 and 2004, both of which led to a two-year suspension on the export of horses. Light trap surveys in the outbreak areas showed that known vector competent Culicoides species, notably C. imicola, were abundant and present in numbers equal to those in the traditional AHS endemic areas. Isolations of AHS virus serotypes 1 and 7, equine encephalosis virus, and bluetongue virus from field-collected C. imicola in the surveillance zone demonstrated that this species was highly competent and could transmit viruses belonging to different serogroups of the Orbivirus genus. Molecular identification of recovered virus isolates indicated that at least two incursions of AHS into the surveillance zone had taken place in 2004. The designation of an AHS-free zone in the Western Cape remains controversial since it can be easily compromised, as evidenced by the two recent outbreaks. In light of the results reported in the present study, the policy of maintaining a large population of unvaccinated horses in the surveillance zone should be reconsidered, as it leaves them vulnerable to infection with AHS virus, which is the most pathogenic of all equine viruses. |
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Address |
Agricultural Research Council-Onderstepoort Veterinary Institute, Private Bag X5, Onderstepoort, 0110 South Africa |
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English |
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Abbreviated Series Title |
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Series Volume |
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Series Issue |
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Edition |
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ISSN |
0253-1933 |
ISBN |
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Expedition |
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Conference |
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Notes |
PMID:17361773 |
Approved |
no |
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Call Number |
Equine Behaviour @ team @ |
Serial |
2355 |
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Author |
Valero, N. |
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Title |
West Nile virus: a new challenge? |
Type |
Journal Article |
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Year |
2003 |
Publication |
Investigacion Clinica |
Abbreviated Journal |
Invest Clin |
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Volume |
44 |
Issue |
3 |
Pages |
175-177 |
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Keywords |
Animal Migration; Animals; Bird Diseases/virology; Birds; Caribbean Region; Central America; Culex/virology; Horse Diseases/virology; Horses; Humans; Insect Vectors/virology; North America/epidemiology; South America; West Nile Fever/*epidemiology/transmission/veterinary; West Nile virus/*physiology |
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Abstract |
West Nile Virus (WNV), a member of the family Flaviviridae, was first isolated in 1937. Since the original isolation of the WNV outbreaks have occurred with increase in frequency of cases in humans and horses, apparent increase in severe human disease and high avian death rates. In 1999, 2000 and 2002 outbreaks of the WNV encephalitis were reported in horses, birds and humans from New York and Canada. Ornithophilic mosquitoes are the principal vectors of the WNV and birds of several species chiefly migrants appear to be the major introductory or amplifying host. The pattern of outbreaks in the old and new world suggests that viremic migratory birds may also contribute to movement of the virus. If so, Central America, Caribbean Islands and countries of South America including Venezuela, are in potential risk for suffering a severe outbreak for WNV, since several species of birds have populations that pass trough New York and cross the western north Atlantic or Caribbean Sea. It is important the knowledge of the ecology of WNV as well of the efficacy of control efforts in order to minimize the public health impact in these countries, where all population is susceptible to this infection. |
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Language |
Spanish |
Summary Language |
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Original Title |
Virus del Nilo Occidental: Un nuevo reto? |
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Abbreviated Series Title |
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Series Volume |
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Series Issue |
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Edition |
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ISSN |
0535-5133 |
ISBN |
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Expedition |
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Notes |
PMID:14552056 |
Approved |
no |
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Call Number |
Equine Behaviour @ team @ |
Serial |
2640 |
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Author |
Washino, R.K.; Tempelis, C.H. |
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Title |
Host-feeding patterns of Anopheles freeborni in the Sacramento Valley, California |
Type |
Journal Article |
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Year |
1967 |
Publication |
Journal of Medical Entomology |
Abbreviated Journal |
J Med Entomol |
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Volume |
4 |
Issue |
3 |
Pages |
311-314 |
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Keywords |
Animals; Anopheles/*growth & development; California; Cats; Cattle; Dogs; Ecology; Horses; Humans; *Insect Vectors; Rabbits; Rodentia; Swine |
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English |
Summary Language |
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Original Title |
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Abbreviated Series Title |
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Series Volume |
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Series Issue |
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Edition |
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ISSN |
0022-2585 |
ISBN |
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Notes |
PMID:6052143 |
Approved |
no |
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Call Number |
Equine Behaviour @ team @ |
Serial |
2745 |
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