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Acanthocephala / ə ˌ k æ n θ oʊ ˈ s ɛ f ə l ə / [3] (Greek ἄκανθος, akanthos 'thorn' + κεφαλή, kephale 'head') is a group of parasitic worms known as acanthocephalans, thorny-headed worms, or spiny-headed worms, characterized by the presence of an eversible proboscis, armed with spines, which it uses to pierce and hold the gut wall of its host.
Archiacanthocephala is a class within the phylum of Acanthocephala. [2] They are parasitic worms that attach themselves to the intestinal wall of terrestrial vertebrates, including humans. They are characterised by the body wall and the lemnisci (which are a bundle of sensory nerve fibers), which have nuclei that divide without spindle ...
The main parts of the worm body are the proboscis, neck, and trunk. Because of horizontal markings on the worm, there is the appearance of segmentation. Acanthocephalans are sexually dimorphic ( dioecious ) – adult males are generally 4 to 5 cm long while females are longer, ranging from lengths of 10 to 30 cm. Males also have copulatory ...
Instead of having its eggs expelled from the host in feces, the gravid female detaches itself from the host's digestive tract and sinks to the bottom, where her body is consumed by the species' intermediate host, Caecidotea intermedius, a species of isopod. [5] [6] Upon hatching, the larvae begin to alter their host's behavior.
Acanthocephala terminalis is a species of leaf-footed bug in the family Coreidae. [3] [4] [5] ... while body size remains relatively constant. [1] Range and habitat
Life cycle of Acanthocephala. [3] [a] The life cycle of an acanthocephalan consists of three stages beginning when an infective acanthor (development of an egg) is released from the intestines of the definitive host and then ingested by an arthropod, the intermediate host. Although the intermediate hosts of Acanthocephaloides are arthropods.
The Florida leaf-footed bug (Acanthocephala femorata) is a species of insect. The genus name Acanthocephala means "spiny head" and comes from the pointed tylus at the tip of the head. [2] Acanthocephala femorata is found in the continental United States and Mexico. [1] This insect is considered a pest, eating and causing damage to citrus and ...
Life cycle of Acanthocephala. [7] [b] The life cycle of an acanthocephalan consists of three stages beginning when an infective acanthor (development of an egg) is released from the intestines of the definitive host and then ingested by an arthropod, the intermediate host. Although the intermediate hosts of Octospinifer are arthropods.