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Adults of different species infest different parts of the definitive host - for example the intestine, lungs, large blood vessels, [5] and liver. [13] The adults use a relatively large, muscular pharynx to ingest cells, cell fragments, mucus, body fluids or blood. In both the adult and snail-inhabiting stages, the external syncytium absorbs ...
Turkish children living shanty towns have higher prevalence than those in school provide apartments, with similar infection rates between boys and girls. [5] In rural Mexico, 25% of the children aged 6–10 in twelve schools were infected with H. nana. Socio-economic factors and lack of parent education are strong influences on the high ...
Pseudoceros canadensis, commonly known as the Puget flatworm, is a species of free-living flatworm in the genus Pseudoceros, belonging to the family Pseudocerotidae. Physical characteristics [ edit ]
Pseudoceros are simultaneous hermaphrodites [9] and reproduce sexually via random hypodermic insemination through the body tissue. [10] These organisms participate in penis fencing, [9] which is a behavior where the flatworms use their extended penises to stab and inseminate the other, while avoiding becoming inseminated themselves.
Monogenea are Platyhelminthes, so are among the lowest invertebrates to possess three embryonic germ layers—endoderm, mesoderm, and ectoderm. In addition, they have a head region that contains concentrated sense organs and nervous tissue (brain). Like all ectoparasites, monogeneans have well-developed attachment structures.
Schistosomiasis, also known as snail fever, bilharzia, and Katayama fever [1] [2] [9] is a disease caused by parasitic flatworms called schistosomes. [5] It affects the urinary tract or the intestines. [5]
An adult Notoplana acticola can range from one to two inches in length. [ citation needed ] The flatworms appear to be a tan or gray color with a darker shade through the center of the body. [ citation needed ] A Notoplana acticola' s body is wide on the anterior end and normally narrows towards the end of the body.
S. mansoni and other schistosomes are the only flukes or flatworms that exhibit sex separation as they exist as male and female individuals as in dioecious animals. [10] [11] However, they are not truly dioecious since the adults live in permanent male-female pairs, a condition called in copula.