Environmental Impact
Nematode parasites of reindeer in Fennoscandia: Population dynamics, anthelmintic control and its environmental impact. Doctoral thesis. ISSN 1652-6880, ISBN 91-576-7138-9 Nematode infections of semi-domesticated reindeer of northern Finland were monitored by faecal egg counts. The tracer calf techn...
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| Format: | Text |
| Language: | English |
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| Online Access: | http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.631.3901 http://pub.epsilon.slu.se/1207/2/PhD_Thesis_complete_Jackie_T_Hrabok.pdf |
| Summary: | Nematode parasites of reindeer in Fennoscandia: Population dynamics, anthelmintic control and its environmental impact. Doctoral thesis. ISSN 1652-6880, ISBN 91-576-7138-9 Nematode infections of semi-domesticated reindeer of northern Finland were monitored by faecal egg counts. The tracer calf technique was also used to estimate the acquisition of nematode infection from pasture. The most abundant parasite in the worm counts of tracer animals and in faecal egg counts of adult female reindeer was Ostertagia gruehneri. Capillaria sp. eggs were detected in calves and adults, but Nematodirinae eggs were only recovered from calves. Egg output of O. gruehneri was most abundant from late summer to autumn whereas Capillaria sp. and the Nematodirinae dominated the winter months. The proportion of inhibited larvae of O. gruehneri and Nematodirinae steadily increased from summer to early winter, followed by a decline and a commensurate increase in the number of adult parasites in the second summer. High prevalence and low intensity also characterized the nematode infections of winter-slaughtered reindeer from other northern herds examined. Our investigations showed that |
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