Metastrongylus Species of Pigs
Living reference work entry
Greek: meta = behind; strongylos = round, cylindric. English: Pig lung worm.
In Europe, four species of the genus Metastrongylus are described in pigs ( M. confusus, M. elongatus, M. pudendotectus, M. salmi). Species differentiation just by morphology is very difficult; however, this is not needed for a successful therapy or for other control measurements. The males reach a length of 1.5–2.5 cm, while the females grow up to a length ranging between 2.5 and 5.5 cm. Males and females live together in nodules inside the small and midsized bronchial cavities. The development involves intermediate host after the females have excreted the thick-shelled eggs that measure about 55 × 40 μm (Fig. 1) and contain already the larva 1. If an intermediate host (e.g., earthworms, several annelids) has ingested such an embryonated egg, the larva hatches and via two molts, the infectious larval stage is reached (Fig. 2). If pigs...
KeywordsLarval Stage Oral Uptake Serological Test Intermediate Host Microscopical Determination
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