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These can be categorized into three groups; cestodes, nematodes and trematodes.Examples include: Acanthocephala; Ascariasis (roundworms); Cestoda (tapeworms) including: Taenia saginata (human beef tapeworm), Taenia solium (human pork tapeworm), Diphyllobothrium latum (fish tapeworm) and Echinococcosis (hydatid tapeworm)
A number of pathogenic intestinal nematodes cause diseases in humans, including ascariasis, trichuriasis, and hookworm disease. Anisakis species parasitise fish, and marine mammals and when consumed by humans can cause anisakiasis a gastric or gastroallergic disease. [ 70 ]
Familiar worms include the earthworms, members of phylum Annelida. Other invertebrate groups may be called worms, especially colloquially. In particular, many unrelated insect larvae are called "worms", such as the railroad worm, woodworm, glowworm, bloodworm, butterworm, inchworm, mealworm, silkworm, and woolly bear worm.
The following is a list of the classes in each phylum of the kingdom Animalia. There are 107 classes of animals in 33 phyla in this list. However, different sources give different numbers of classes and phyla. For example, Protura, Diplura, and Collembola are often considered to be the three orders in the class Entognatha. This list should by ...
The giant panda is a vulnerable species The use of love darts by the land snail Monachoides vicinus is a form of sexual selection Adult silk worm. Animals are multicellular eukaryotic organisms in the biological kingdom Animalia.
Reptiles, from Nouveau Larousse Illustré, 1897–1904, notice the inclusion of amphibians (below the crocodiles). In the 13th century, the category of reptile was recognized in Europe as consisting of a miscellany of egg-laying creatures, including "snakes, various fantastic monsters, lizards, assorted amphibians, and worms", as recorded by Beauvais in his Mirror of Nature. [7]
Ambulacraria are exclusively marine and include acorn worms, starfish, sea urchins, and sea cucumbers. [148] The chordates are dominated by the vertebrates (animals with backbones), [149] which consist of fishes, amphibians, reptiles, birds, and mammals. [150] [151] [152] The Spiralia develop with spiral cleavage in the embryo, as here in a sea ...
Trematodes are flattened oval or worm-like animals, usually no more than a few centimeters in length, although species as small as 1 millimetre (0.039 in) are known. Their most distinctive external feature is the presence of two suckers , one close to the mouth, and the other on the underside of the animal.