Glossary
Acoelomorpha-Disputed phylum of marine, soft-bodied animals with planula-like features.
Platyhelminthes- Phylum of relatively simple bilterian, unsegmented, soft-bodied invertebrates.
Turbellaria-Sub-division of the phylum Platyhelminthes; not parasitic.
Monogenea-Small parasitic platform mainly found on skin or gills of fish.
Trematoda-A class within the phylum Platyhelminthes. Includes two groups of parasitic platforms called flukes.
Aspidogastrea-Small group of flukes that is a subclass of trematoda, and sister group to the Diogenes.
Digenea-A subclass of parasitic platforms characterized by a complex life cycle involving mollusks as the intermediate host.
Cestoidea-Name given to a class of parasitic platforms, of the phylum Platyhelminthes.
Cestodaria-One of two subclasses of the class Custoidea. The larvae have ten hooks on the posterior end.
Eucestoda-Larger of the two subclasses of platforms in the class Custody. All species are parasites.
Acoelomate-Animal that lacks a coelom. Possesses the digestive cavity.
Mesodermal mass-Germ layer.
Paedomorphosis-Resemblance of adult animals to the young of their ancestors.
Parenchyma-Functional tissue of an organ as distinguished from the connective and supporting tissue.
Rhabdites-Rod like structures in the cells of epidermis and in the nemerteans Discharged in mucous secretions.
Adhesive glands-Interbrate glands that secrete a sticky substance.
Chemoreceptors-Sensory cell or organ responsive to chemical stimuli.
Protonephridia-Invertebrate organ which occurs in pairs and removes metabolic wastes from an animal's body.
Flame cells-Specialized excretory cell found in the simplest freshwater invertebrates, including platforms.
Nephridiopore-External opening of a nephridium.
AuriclesStructure resembling an ear or earlobe.
Ocelli-Simple eye.
Zooids-Animal arising from another by budding or division.
Cocoon-Silky case spun by larvae for protection.
Oncomiracidium-Ciliated larva of Monogenea that hatches from the egg.
Flukes-Any member of the invertebrate class Trematoda.
Tegument-Integument of an organism.
Opisthaptor-Monogenea are a group of largely ectoparasitic members of Platyhelminthes.
Acetabulum-Socket of the hip bone.
Operculum-Structure that closes or covers an aperture.
Miracidium-Free swimming dilated larval stage in which parasitic fluke passes from egg to hose.
Sporocyst-Parasitic fluke in the initial stage of infection in snail host.
Cercariae-Free swimming larval stage in which a parasitic fluke passes from an intermediate host to final vertebrate host.
Metacercaria-Trematodes are small parasitic platforms that use vertebrates as their host.
Scolex-Anterior end of a tapeworm.
Endoparasite-Lives inside host.
Ectoparasite-Lives outside host.
Rostellum-Protrusion at the anterior end of a tapeworm, as an extension of the teguemtn.
Strobila-Segmented part of the body of a tapeworm.
Onchosphere-Members live in digestive tract of vertebrates as adults.
Cysticercosis-Tissue infection after exposure to egg of pork tapeworm.
Statocyst- orientates the body using gravity
Platyhelminthes- Phylum of relatively simple bilterian, unsegmented, soft-bodied invertebrates.
Turbellaria-Sub-division of the phylum Platyhelminthes; not parasitic.
Monogenea-Small parasitic platform mainly found on skin or gills of fish.
Trematoda-A class within the phylum Platyhelminthes. Includes two groups of parasitic platforms called flukes.
Aspidogastrea-Small group of flukes that is a subclass of trematoda, and sister group to the Diogenes.
Digenea-A subclass of parasitic platforms characterized by a complex life cycle involving mollusks as the intermediate host.
Cestoidea-Name given to a class of parasitic platforms, of the phylum Platyhelminthes.
Cestodaria-One of two subclasses of the class Custoidea. The larvae have ten hooks on the posterior end.
Eucestoda-Larger of the two subclasses of platforms in the class Custody. All species are parasites.
Acoelomate-Animal that lacks a coelom. Possesses the digestive cavity.
Mesodermal mass-Germ layer.
Paedomorphosis-Resemblance of adult animals to the young of their ancestors.
Parenchyma-Functional tissue of an organ as distinguished from the connective and supporting tissue.
Rhabdites-Rod like structures in the cells of epidermis and in the nemerteans Discharged in mucous secretions.
Adhesive glands-Interbrate glands that secrete a sticky substance.
Chemoreceptors-Sensory cell or organ responsive to chemical stimuli.
Protonephridia-Invertebrate organ which occurs in pairs and removes metabolic wastes from an animal's body.
Flame cells-Specialized excretory cell found in the simplest freshwater invertebrates, including platforms.
Nephridiopore-External opening of a nephridium.
AuriclesStructure resembling an ear or earlobe.
Ocelli-Simple eye.
Zooids-Animal arising from another by budding or division.
Cocoon-Silky case spun by larvae for protection.
Oncomiracidium-Ciliated larva of Monogenea that hatches from the egg.
Flukes-Any member of the invertebrate class Trematoda.
Tegument-Integument of an organism.
Opisthaptor-Monogenea are a group of largely ectoparasitic members of Platyhelminthes.
Acetabulum-Socket of the hip bone.
Operculum-Structure that closes or covers an aperture.
Miracidium-Free swimming dilated larval stage in which parasitic fluke passes from egg to hose.
Sporocyst-Parasitic fluke in the initial stage of infection in snail host.
Cercariae-Free swimming larval stage in which a parasitic fluke passes from an intermediate host to final vertebrate host.
Metacercaria-Trematodes are small parasitic platforms that use vertebrates as their host.
Scolex-Anterior end of a tapeworm.
Endoparasite-Lives inside host.
Ectoparasite-Lives outside host.
Rostellum-Protrusion at the anterior end of a tapeworm, as an extension of the teguemtn.
Strobila-Segmented part of the body of a tapeworm.
Onchosphere-Members live in digestive tract of vertebrates as adults.
Cysticercosis-Tissue infection after exposure to egg of pork tapeworm.
Statocyst- orientates the body using gravity