Echinostomatidae definition is - a family of digenetic trematode worms (type genus Echinostoma) that are rare in man but common and widely distributed as parasites of birds and lower vertebrates and are distinguished by having the anterior end modified and armed with spines.
Classification kingdom Animalia phylum Platyhelminthes class Trematoda order. Echinostomatidae genus Petasiger species Petasiger exaeretus.
Echinostomatidae (Trematoda) is the largest family within the class Trematoda. Members of this family have been studied for many years in relation to their utility as basic research models in.
ECHINODERMATA LARVAE Echinodermata larval forms. Echinoderms are unisexual animals. Sexual dimorphism is absent. Fertilisation takes place in water. The development may be direct or indirect. If the development is indirect it includes larva stages. In different classes of echinoderms, different types of larvae complete the development.
All animals are categorized by a seven-part classification system. What type of animal an octopus is depends on the taxonomic level being discussed. The broadest level is kingdom, followed by phylum, class, order, family, genus and species. All octopuses belong to the order Octopoda.
Abstract. The effect of Echinostoma friedi experimental infection on longevity, growth and fecundity of two susceptible first intermediate host snails, Radix peregra and Biomphalaria glabrata, was studied to contrast the level of compatibility. 120 R. peregra and 150 B. glabrata snails were used exposed to one, three or five miracidia and divided in three categories: INF (snails exposed and.
Primary References at the level of this taxa; B24: E J L Soulsby: Helminths, Arthropods and Protozoa of Domesticated Animals: Seventh Edition.
Faust (1929) presented an outline of the classification of the Digenea based primarily on fundamental excretory patterns, but also utilized life history criteria. In this same year Stunkard (1929) made a detailed comparison of the excretory systems of three genera Heterophyes, M-i- crophallus, and Cryptocotyle, all at that time considered to be members of the family Heterophyidae.