{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,1,5]],"date-time":"2026-01-05T07:13:22Z","timestamp":1767597202436},"reference-count":22,"publisher":"Cambridge University Press (CUP)","issue":"2","license":[{"start":{"date-parts":[[2009,6,5]],"date-time":"2009-06-05T00:00:00Z","timestamp":1244160000000},"content-version":"unspecified","delay-in-days":8040,"URL":"https:\/\/www.cambridge.org\/core\/terms"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["J. Helminthol."],"published-print":{"date-parts":[[1987,6]]},"abstract":"<jats:title>ABSTRACT<\/jats:title><jats:p><jats:italic>Onchocerca gutturosa<\/jats:italic>and<jats:italic>O. lienalis<\/jats:italic>inflections in British cattle were studied by examination of cattle post-mortem originating from North Wales and Cheshire (north west England). In 463 adult animals, the microfilarial (mf) prevalence was 28\u00b75%. In 95\u00b73% of the inflected animals, gravid worms could not be found at either the ligamentum nuchae or the gastro-splenic omentum. Dermal mf at the head were identified as<jats:italic>O. gutturosa<\/jats:italic>on the basis of their highly significant assocation with the presence of gravid<jats:italic>O. gutturosa<\/jats:italic>at the ligamentum nuchae, which were found in only 3\u00b72% of cattle. Mfs were isolated from different skin sites and from adult worms and a minimum of 10 mfs from each isolate were examined for width and acid phosphatase (AP) staining pattern. The width of<jats:italic>O. gutturosa<\/jats:italic>dermal mf was &lt;4 \u03bcm (4 isolations), narrower than of putative<jats:italic>O. lienalis<\/jats:italic>mf isolated from umbilical skin of cattle without evidence of<jats:italic>O. gutturosa<\/jats:italic>, which were in 20\/22 isolations &gt;4 \u03bcm wide. The dermal mf were also distinguished on the basis of different AP staining patterns which, for each species, correlated closely with that of hatched intrauterine mf from their respective adult female worms. Based on the criteria of morphology and AP staining patterns the mf species prevalences in the survey population were estimated as<jats:italic>O. lienalis<\/jats:italic>24\u00b71% and<jats:italic>O. gutturosa<\/jats:italic>2\u00b72%, with a further 2\u00b72% of cattle inflected with both species. The results indicate that the predilection site of adult<jats:italic>O. lienalis<\/jats:italic>is not the gastro-splenic omentum. In North Wales, the distribution of the two species was different;<jats:italic>O. lienalis<\/jats:italic>was widely distributed in all cattle rearing areas both lowland and upland, whereas<jats:italic>O. gutturosa<\/jats:italic>was largely restricted to valleys close to major rivers.<\/jats:p>","DOI":"10.1017\/s0022149x00009834","type":"journal-article","created":{"date-parts":[[2009,6,5]],"date-time":"2009-06-05T15:22:10Z","timestamp":1244215330000},"page":"103-113","source":"Crossref","is-referenced-by-count":12,"title":["Onchocerciasis in British cattle: a study of<i>Onchocerca gutturosa<\/i>and<i>O. lienalis<\/i>in North Wales"],"prefix":"10.1017","volume":"61","author":[{"given":"A.J.","family":"Trees","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"P.J.","family":"McCall","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"S.J.","family":"Crozier","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"56","published-online":{"date-parts":[[2009,6,5]]},"reference":[{"key":"S0022149X00009834_ref021","doi-asserted-by":"publisher","DOI":"10.1016\/0035-9203(57)90101-3"},{"key":"S0022149X00009834_ref011","doi-asserted-by":"publisher","DOI":"10.4269\/ajtmh.1952.1.250"},{"key":"S0022149X00009834_ref004","doi-asserted-by":"publisher","DOI":"10.2307\/3280279"},{"key":"S0022149X00009834_ref002","doi-asserted-by":"publisher","DOI":"10.1177\/10.6.741"},{"key":"S0022149X00009834_ref020","first-page":"323","article-title":"Distribution of the microfilariae of Onchocerca in the skin of cattle","volume":"41","author":"Venkataratnam","year":"1961","journal-title":"Annales de la Soci\u00e9te Belge de Med\u00e9cine Tropicale"},{"key":"S0022149X00009834_ref006","doi-asserted-by":"crossref","first-page":"245","DOI":"10.1017\/S0022149X00007136","article-title":"Studies on Onchocerca gutturosa (Neumann, 1910) and its development in Simulium ornatum (Meigen, 1818). 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Observations on O. gutturosa in cattle in South-East England","volume":"45","author":"Eichler","year":"1971","journal-title":"Journal of Helminthollogy"},{"key":"S0022149X00009834_ref007","doi-asserted-by":"publisher","DOI":"10.19182\/remvt.8149"},{"key":"S0022149X00009834_ref009","first-page":"51","article-title":"The identification of some Onchocerca spp. of cattle by isoenzyme analysis","volume":"33","author":"Flockhart","year":"1982","journal-title":"Tropenmedizin und Parasitologie"},{"key":"S0022149X00009834_ref022","first-page":"109","article-title":"Acid phosphatase patterns in microfilariae of Onchocerca volvulus s.1. from the Upper Orinoco basin, Venezuela","volume":"34","author":"Yarz\u00e1bal","year":"1983","journal-title":"Tropenmedizin und Parasitilogie"},{"key":"S0022149X00009834_ref015","first-page":"462","article-title":"Histochemical enzyme-staining patterns of Onchocerca volvulus microfilariae and their occurrence in different onchocerciasis areas","volume":"29","author":"Omar","year":"1978","journal-title":"Tropenmedizin und Parasitologie"},{"key":"S0022149X00009834_ref001","doi-asserted-by":"crossref","first-page":"421","DOI":"10.1051\/parasite\/1978534421","article-title":"Validit\u00e9 des deux espe\u00e8ces Onchocerca lienalis et O. gutturosa, chez les bovins","volume":"53","author":"Bain","year":"1978","journal-title":"Annales de Parasitologie"},{"key":"S0022149X00009834_ref018","first-page":"1093","article-title":"Evidence of onchocerciasis in Georgia cattle: prevalence at slaughter","volume":"38","author":"Scholtens","year":"1977","journal-title":"American Journal of Veterinary Research"},{"key":"S0022149X00009834_ref014","first-page":"175","volume-title":"Problems in the Identification of Parasites and their Vectors","volume":"17","author":"Muller","year":"1979"},{"key":"S0022149X00009834_ref017","first-page":"33","article-title":"Histochemical differentiation of microfilariae of Dipetalonema, Dirofilaria, Onchocerca and Setaria spp. of man and domestic animals in the Zaria area (Nigeria)","volume":"29","author":"Schillhorn Van Veen","year":"1978","journal-title":"Tropenmedizin und Parasitologie"},{"key":"S0022149X00009834_ref013","first-page":"274","article-title":"Preliminary field studies on potential vectors of bovine onchocerciasis in North Wales","volume":"78","author":"Mccall","year":"1984","journal-title":"Transactions of the Royal Society of Tropical Medicine and Hygiene"},{"key":"S0022149X00009834_ref016","first-page":"157","article-title":"The development of Onchocerca ochengi (Nematoda: Filaroidea) to the infective stage in Simulium damnosum s.1. with a note on the histochemical staining of the parasite","volume":"30","author":"Omar","year":"1979","journal-title":"Tropenmedizin und Parasitologie"},{"key":"S0022149X00009834_ref003","first-page":"109","article-title":"Large scale recovery of Onchocerca mocrofilariae from naturally inflected cattle and horses","volume":"74","author":"Bianco","year":"1980","journal-title":"Transactions of the Royal Society of Tropical Medicine and Hygiene"},{"key":"S0022149X00009834_ref019","doi-asserted-by":"publisher","DOI":"10.1017\/S0031182000024756"},{"key":"S0022149X00009834_ref010","doi-asserted-by":"publisher","DOI":"10.1017\/S0022149X00025785"},{"key":"S0022149X00009834_ref008","first-page":"555","article-title":"Filarios\u00e9s des bovid\u00e9s au Ruanda-Urundi. III Etude parasitologique B) Failaries des genres Setaria et Onchocerca, et microfilaries sanguines et dermiques","volume":"35","author":"Fain","year":"1955","journal-title":"Annales de la Societe Belge de Medecine Tropicale"},{"key":"S0022149X00009834_ref012","first-page":"231","article-title":"Onchocerciasis of Queensland cattle","volume":"45","author":"Johnston","year":"1921","journal-title":"Transactions of the Royal Sciety of South Australia"},{"key":"S0022149X00009834_ref005","doi-asserted-by":"publisher","DOI":"10.1017\/S0022149X00023762"}],"container-title":["Journal of Helminthology"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/www.cambridge.org\/core\/services\/aop-cambridge-core\/content\/view\/S0022149X00009834","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2020,5,19]],"date-time":"2020-05-19T06:56:30Z","timestamp":1589871390000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.cambridge.org\/core\/product\/identifier\/S0022149X00009834\/type\/journal_article"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[1987,6]]},"references-count":22,"journal-issue":{"issue":"2","published-print":{"date-parts":[[1987,6]]}},"alternative-id":["S0022149X00009834"],"URL":"https:\/\/doi.org\/10.1017\/s0022149x00009834","relation":{},"ISSN":["0022-149X","1475-2697"],"issn-type":[{"value":"0022-149X","type":"print"},{"value":"1475-2697","type":"electronic"}],"subject":[],"published":{"date-parts":[[1987,6]]}}}