What are the characteristics of Aspidogastrea?
Families within the Aspidogastrea It is characterised by a single row of rugae (transverse thickenings of the body surface), numerous testes, and two caeca. Species of all other families have a single caecum and either one or two testes.
How many species of trematoda are there?
Trematoda is a class of 15,000–20,000 species and include two subclasses, the Aspidogastrea and the Digenea (Gibson et al., 2014). The Aspidogastrea comprise fewer than 100 species. They are parasites of the alimentary canal mainly of fishes and turtles.
What is the family of trematodes?
Trematodes (flukes) include parasitic flatworms belonging to the phylum Platyhelminthes, class Trematoda, and subclasses Aspidogastrea (two orders, four families) and Digenea (ten orders, more than seventy-two families).
Why are trematodes called flukes?
Trematode infections occur worldwide. Trematodes, also called flukes, cause various clinical infections in humans. The parasites are so named because of their conspicuous suckers, the organs of attachment (trematos means “pierced with holes”).
What are the major groups of trematodes?
Aspidogastrea and digenean trematodes make up the two major groups of Trematoda. The two groups are distinguished based on their structures and development process.
What are trematodes?
Trematodes, or flukes, are parasitic flatworms with unique life cycles involving sexual reproduction in mammalian and other vertebrate definitive hosts and asexual reproduction in snail intermediate hosts.
Which flatworm is also called trematode?
fluke, also called blood fluke or trematode, any member of the invertebrate class Trematoda (phylum Platyhelminthes), a group of parasitic flatworms that probably evolved from free-living forms millions of years ago. There are more than 10,000 species of flukes.
Are tapeworms trematodes?
Cestodes are parasitic worms of the taxonomic class of Cestoda and include tapeworms. Trematodes, commonly called flukes, are parasitic worms of the taxonomic class Trematoda. Both are in the kingdom Animalia and phylum Platyhelminthes. Both are bilaterally symmetrical and multicellular animals.
What is the common name for trematodes?
fluke, also called blood fluke or trematode, any member of the invertebrate class Trematoda (phylum Platyhelminthes), a group of parasitic flatworms that probably evolved from free-living forms millions of years ago.