Spiculopteragia spiculoptera, S. asymmetrica and Ostertagia leptospicularis from Cervus elaphus in La Pampa, Argentina

Suarez, V.H.; Busetti, M. R.; Fort, Marcelo; Bedotti, D. O.

doi:10.1016/0304-4017(91)90095-d

Cited by 11 publications

(6 citation statements)

References 5 publications

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“…This study also demonstrated in a direct cross-infection experiment that O. leptospicularis is a generalist parasite and can spread between roe deer, cattle and sheep. Indeed, previous studies report the presence of this parasite in wild fallow [41] and red deer [42], but do not demonstrate direct transmission to cattle. We also demonstrated in a direct cross-infection experiment that S. spiculoptera can pass from roe deer to cattle.…”

Section: Discussionmentioning

confidence: 99%

Wild deer as potential vectors of anthelmintic-resistant abomasal nematodes between cattle and sheep farms

et al. 2014

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Gastrointestinal (GI) nematodes are among the most important causes of production loss in farmed ruminants, and anthelmintic resistance is emerging globally. We hypothesized that wild deer could potentially act as reservoirs of anthelmintic-resistant GI nematodes between livestock farms. Adult abomasal nematodes and faecal samples were collected from fallow (n = 24), red (n = 14) and roe deer (n = 10) from venison farms and areas of extensive or intensive livestock farming. Principal components analysis of abomasal nematode species composition revealed differences between wild roe deer grazing in the areas of intensive livestock farming, and fallow and red deer in all environments. Alleles for benzimidazole (BZ) resistance were identified in β-tubulin of Haemonchus contortus of roe deer and phenotypic resistance confirmed in vitro by an egg hatch test (EC50 = 0.149 µg ml−1 ± 0.13 µg ml−1) on H. contortus eggs from experimentally infected sheep. This BZ-resistant H. contortus isolate also infected a calf experimentally. We present the first account of in vitro BZ resistance in wild roe deer, but further experiments should firmly establish the presence of phenotypic BZ resistance in vivo. Comprehensive in-field studies should assess whether nematode cross-transmission between deer and livestock occurs and contributes, in any way, to the development of resistance on livestock farms.

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Section: Discussionmentioning

confidence: 99%

Wild deer as potential vectors of anthelmintic-resistant abomasal nematodes between cattle and sheep farms

et al. 2014

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“…Commercial ewe dairying is currently being developed in Argentina as a new alternative for small ruminant farming (Suarez and Busetti, 1999). This activity is not only profitable for farmers but also introduces new products, such as ewe cheese, to the Argentinian dairy market.…”

Section: Introductionmentioning

confidence: 99%

Effect of Infectious Status and Parity on Somatic Cell Count and California Mastitis Test in Pampinta Dairy Ewes

Suárez¹,

Busetti²,

Miranda³

et al. 2002

Journal of Veterinary Medicine, Series B

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The relationship between somatic cell counts (SCC) and California mastitis test (CMT) results according to the infectious status of mammary halves and parity of Pampinta dairy ewes was evaluated. Tests were associated to bacteriological analysis and classified into three groups: uninfected (negative culture), infected by minor pathogens and infected by major pathogens. Coagulase-negative Staphylococcus (32.4%), Micrococcus spp. (32.4%), Corynebacterium spp. (5.4%), and Bacillus spp. (1.4%) were the minor pathogens isolated, while Staphylococcus aureus (27%) and Escherichia coli (1.4%) were the major pathogens isolated. A good correlation was found between the CMT and SCC, which included inflammatory and epithelial cells (r = 0.64; P < 0.0001). SCC averages for the CMT scores shown in parentheses were 223 576 (0); 245,248 (1); 397,778 (2); 1,159,109 (3) and 2,460,833 (4) cells/ml. The correlation between SCC and the infectious status of udder halves was 0.58 (P < 0.0001). The relationship between SCC and CMT profiles and infectious status studied by a discriminant analysis showed, with an accuracy of 65%, three infectious status groups. SCC arithmetic means were 244,470 cells/ml for negative culture, 1,044,100 cells/ml for minor pathogens and 2,045,652 cells/ ml for major pathogens. With the exception of 1-year-old ewes, no significant differences were observed in SCC as affected by age or parity.

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“…Prior translocations of elk or red deer (also C. elaphus) have been attributed as the vehicle for introduction of liver flukes (Fascioloides magna) to Italy (Bassi, 1893in Kistner, 1982, the abomasal nematodes Spiculopteragia spiculoptera, Spiculopteragia asymmetrica, and Ostertagia leptospicularis to Argentina, New Zealand, and Texas (USA) (Andrews, 1973;Suarez et al, 1991;Rickard et al, 1993), and Onchocerca cervipedis to Poland (Tarezy'nski, 1954). Elaphostrongylus cervi was found in quarantined red deer being imported from New Zealand into Canada (Gajadhar et al, 1994).…”

Section: Introductionmentioning

confidence: 99%

Health Protocol for Translocation of Free-Ranging Elk

Corn

Nettles

2001

Journal of Wildlife Diseases

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When considering an elk (Cervus elaphus) restoration program, wildlife managers must evaluate the positive and negative elements of translocation. We prepared this protocol to give an overview of health considerations associated with translocation of elk, with an emphasis on movement of free-ranging elk from western North America to the southeastern USA. We evaluated infectious agents and ectoparasites reported in elk from two perspectives. First, we made a qualitative estimate of the ability of the agent to be introduced and to become established. This was done using a selected set of epidemiologic factors. Second, if there was a good possibility that the organism could become established in the release area, the potential pathological consequences for elk and other wildlife, domestic animals, and humans were assessed via examination of the literature and consultation with other animal health specialists. The results of these evaluations were used to classify infectious agents and ectoparasites as low risk (n ϭ 174), unknown risk (n ϭ 10), and high risk (n ϭ 9). We classified Anaplasma marginale, Anaplasma ovis, Mycobacterium paratuberculosis, Pasteurella multocida serotype 3, Elaphostrongylus cervi, Dicrocoelium dendriticum, Fascioloides magna, Echinococcus granulosus, Dermacentor albipictus, and Otobius megnini as unknown risks. High risk infectious agents and ectoparasites were the agent of chronic wasting disease, Brucella abortus, Mycobacterium bovis, Dermacentor andersoni, Ixodes pacificus, and Psoroptes sp. Parelaphostrongylus tenuis, Elaeophora schneideri, and a Babesia sp. are parasites endemic in the southeastern USA that may present a ''reverse risk'' and adversely affect elk if released in some parts of the region. We developed a five-component protocol to reduce the risk of introduction of high risk infectious agents and ectoparasites that included: (1) evaluation of the health status of source populations, (2) quarantines, (3) physical examination and diagnostic testing, (4) restrictions on translocation of animals from certain geographic areas or populations, and (5) prophylactic treatment.

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Spiculopteragia spiculoptera, S. asymmetrica and Ostertagia leptospicularis from Cervus elaphus in La Pampa, Argentina

Cited by 11 publications

References 5 publications

Wild deer as potential vectors of anthelmintic-resistant abomasal nematodes between cattle and sheep farms

Wild deer as potential vectors of anthelmintic-resistant abomasal nematodes between cattle and sheep farms

Effect of Infectious Status and Parity on Somatic Cell Count and California Mastitis Test in Pampinta Dairy Ewes

Health Protocol for Translocation of Free-Ranging Elk

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