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Name: Greek: tainia = tape, band; hydatis = bladder containing water. Latin: pisum = pea; forma = shape; multiceps = with many heads; crassiceps = with fat ends; ovis = sheep.
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Geographic distribution/epidemiology: Worldwide with a broad spectrum of hosts.
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Morphology/life cycle: There are several rather common species:
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Taenia pisiformis (Figs. 1, 2, 3, 4, and 5). Adult worms reach a length of up to 2 m. The gravid terminal proglottids measure about 8–10 × 4.5 mm and their uterus is composed of a median strand and 8–14 pairs of lateral ones (Fig. 2). Intermediate hosts are rabbits, hares, and several rodents which harbor the pea-sized, whitish spherical cysticercus larva.
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Taenia ovis (Figs. 5 and 6). The adult tapeworm reaches a length of 1.2–1.5 m. Intermediate hosts are sheep.
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Taenia hydatigena (Fig. 5). This species reaches a length of 1 m; its terminal proglottids measure 12 × 6 mm. Intermediate hosts are different plant feeders.
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Further Reading
Al-Sabi MNS et al (2013) Reappearance of Taenia ovis krabbei muscle cysts in a roe deer (Capreolus capreolus) in Denmark after 60+ years. Vet Parasitol 196:225–229
DeWolf BD et al (2012) Distribution of, and risk factors associated with, sheep carcass condemnations due to cysticercus ovis infection on Canadian sheep farms. Vet Parasitol 190:434–441
DeWolf BD et al (2013) Development of a Taenia ovis transmission model and an assessment of control strategies. Vet Parasitol 198:127–135
Jia W et al (2010) Complete mitochondrial genomes of Taenia multiceps, T. hydatigena and T. pisiformis: additional molecular markers for a tapeworm genus of human and animal health significance. BMC Genomics 11:447–460
Jia W et al (2012) Mitochondrial genes and genomes support a cryptic species of tapeworm within Taenia taeniaeformis. Acta Trop 123:154–163
Mehlhorn H et al (1981) On the nature of proglottids in cestodes. Parasitol Res 65:243–259
Ntoukas V et al (2013) Cerebrellar cysticercosis caused by larval Taenia crassiceps tapeworm in immunocompetent woman, Germany. Emerg Infect Dis 19:2008–2011
Rostami S et al (2013) Molecular and morphological characterization of the tapeworm Taenia hydatigena (Pallas, 1766) in sheep from Iran. J Helminth. doi:10.1017/S0022149X13000667
Wu X et al (2012) Detailed transcriptome description of the neglected cestode Taenia multiceps. PLoS One 7, e45830
Wu X et al (2013) Identification of neglected cestode Taenia multiceps microRNAs by illumine sequencing and bioinformatics analysis. BMC Vet Res 9:162–175
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Mehlhorn, H. (2015). Taenia Species of Dogs and Cats. In: Mehlhorn, H. (eds) Encyclopedia of Parasitology. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-27769-6_4482-1
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DOI: https://doi.org/10.1007/978-3-642-27769-6_4482-1
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Publisher Name: Springer, Berlin, Heidelberg
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