trematode

Heterophyes heterophyes

…is a parasitic species of Heterophyid trematode that is commonly found in Northern Africa and most of Asia and Indonesia. Adult H. heterophyes will live burrowed between the villi of their host’s small intestines, their hosts are typically fish-eating birds and mammals (including humans). H. heterophyes eggs will not hatch until they have been ingested by a snail (usually Pirenella conica in Africa or Cerithidia cingula in Asia) once inside the snails gut the eggs will hatch and become a sporocyst which will produce rediae, which in turn produce cercariae which will exit the snail and swim towards the surface of the water and fall back down. On their way down they will attempt to come in contact with a fish and penetrate their tissue, from here the cercariae will enycst in the muscle tissue until the fish is eaten.

Classification

Animalia-Platyhelminthes-Trematoda-Opisthorchiida-Heterophyidae-Heterophyes-H. heterophyes

Image: Division of Parasitic Diseases and Malaria team

  • Phylum: Platyhelminthes
  • Class: Trematoda

Ribeiroia ondatrae is a parasitic trematode (flatworm) with a free-swimming larval stage that prefers to infect in and around the developing limb buds of larval amphibians. This can change or completely inhibit limb development. The limb malformation alter the frog’s ability to jump and swim making them much more susceptible to predators. 

Some bad news: I ran out of memory to render my objects in Illustrator so now they appear as black and white skeletons. The good news is that I was able to successfully save the file along with a .png. I was so close to finishing it too. The miracidia was the only thing left to render :(

Anyways, enjoy this infected mesentery screen shot from my .png while I work around this problem.