The prepatent period for these tapeworms is approximately 40 days.įigure 6-9 Moniezia species produce eggs with a characteristic square or triangular shape. benedini are square or cuboidal in shape and approximately 75 µm in diameter ( Figure 6-9). expansa are triangular or pyramidal in shape and 56 to 67 µm in diameter. The eggs of both species can be easily differentiated using standard fecal flotation procedures. Two species are common among ruminants: Moniezia benedini in cattle and Moniezia expansa in cattle, sheep, and goats. The eggs of both species possess a pyriform (pear-shaped) apparatus. These tapeworms produce eggs with a characteristic square or triangular shape. Individual proglottids are very short and wide-“squatty.” Each proglottid contains two sets of laterally located genital organs and associated pores ( Figure 6-8). The scolex of Moniezia is unarmed it lacks an armed rostellum ( Figure 6-7). Moniezia species are large tapeworms and can be up to 1.6 cm at the widest margins ( Figure 6-6). Moniezia species are long (up to 6 m) tapeworms found in the small intestine of cattle, sheep, and goats. Transmission Route: Ingestion of infective grain mite expansa)ĭerivation of Genus: Moniezia-to be single Parasite: Moniezia benedini and Moniezia expansa Moniezia species and Thysanosoma actinoides are true tapeworms that infect the intestinal tract of ruminants. Understand the concepts behind the following metacestode stages, regarding their role in the life cycles of both true and pseudotapeworms.įigure 6-5 Cysticercoid (larval) stage has been dissected from insect intermediate host.Understand the correlation and integration between vertebrate or invertebrate hosts that serve as intermediate hosts for larval (metacestode) stages of cestodes and the vertebrate hosts that serve as definitive hosts for the adult stages of their corresponding cestode parasites.Understand that many cestode parasites are associated with two scientific names, one scientific name for the adult form of the parasite and one scientific name for the larval (metacestode) stage of the parasite.Identify the tapeworm parasites (both adult and larval forms) of the following domesticated animals: dog, cat, cattle, sheep, horse, and selected laboratory animals.
0 Comments
Leave a Reply. |
Details
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |