Host age, sex related and seasonal dynamics of Elaphostrongylus cervi larvae in fenced and free living red deer
Keywords:
red deer (Cervus elaphus L.), Elaphostrongylus cervi dorsal-spined larvae, L1, Baermann method, prevalence, intensityAbstract
First-stage larvae (L1) of the so-called tissue worm or extra-pulmonary lungworm Elaphostrongylus cervi were detected in the faeces of red deer using the Baermann sedimentation method. Faeces samples of farmed (n = 340) and free living deer (n = 94) of different age categories and both sexes were collected and examined in 2005–2009. Dorsal-spined 364–452 µm long L1 were counted and expressed as number of larva per gram (lpg). In calf samples L1 appeared first time in January only. Wild calves represented a higher prevalence (61.1–80%) and lower intensity (25.2–90.2) than their farmed counterparts (33.3–45.5 and 80–292 lpg). Prevalence (33.3–83.3 %) and intensity (5.2–372.1) in wild hinds varied over seasons as well as in farmed hinds (36.8–90.5%, and 54.7–251.6). In farmed stags prevalence showed even larger variations (0–100%), meanwhile intensity values were low (4–31.3) except in March (144.7 lpg). The use of anthelmintics had just a short-term influence on the prevalence and intensity.
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