Fischoederius cobboldi: A scanning electron microscopy investigation of surface morphology of adult rumen fluke

摘要: Abstract Adults Fischoederius cobboldi are conical-shaped, concave ventrally and convex dorsally, measures about 8–10 mm in length 4–6 mm width across the mid section. Scanning electron microscopy (SEM) of entire body showed that tegumental surface exhibits highly corrugation transverse folds alternating with grooves without spines. At higher magnification, each fold is further increased a meshwork ridges separated by irregular-sized pits. The ventral has more complex corrugations invaginations than those dorsal body. Both anterior posterior suckers have thick edges covered appear spineless. genital pore located at one-third There two types sensory papillae on surface: type 1 bulbous shape nipple-like tips, measuring 10–15 μm diameter base, also 2 similar short cilia tips. These occur large clusters, having between 7 25 units depending region Clusters around tend to be abundant larger size. side exhibit features, but less numerous smaller. Corrugations aspect extensive