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・ Acanthobrama terraesanctae
・ Acanthobrama tricolor
・ Acanthobunocephalus nicoi
・ Acanthocalycium
・ Acanthocalyx
・ Acanthocalyx delavayi
・ Acanthocardamum
・ Acanthocardia
・ Acanthocardia aculeata
・ Acanthocardia spinosa
・ Acanthocardia tuberculata
・ Acanthocarpus
・ Acanthocarpus (crab)
・ Acanthocarpus (plant)
・ Acanthocarpus preissii
Acanthocephala
・ Acanthocephala (disambiguation)
・ Acanthocephala (insect)
・ Acanthocephala declivis
・ Acanthocephalus
・ Acanthocephalus (animal)
・ Acanthocephalus (plant)
・ Acanthocephalus anguillae
・ Acanthocephalus dirus
・ Acanthocephalus echigoensis
・ Acanthocepola
・ Acanthoceras
・ Acanthoceras (alga)
・ Acanthoceras (ammonite)
・ Acanthoceras rhotomagensis


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Acanthocephala : ウィキペディア英語版
Acanthocephala

Acanthocephala (Greek , ', thorn + , ', head) is a phylum 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. Acanthocephalans have complex life cycles, involving at least two hosts, which may include invertebrates, fishes, amphibians, birds, and mammals. About 1150 species have been described.〔Freeman, Scott, Lizabeth Allison, Michael Black, Greg Podgorski, and Kim Quillin. Biological Sciences. 5th ed. Glenview, Il: Pearson, 2014. 638. Print. 〕
The Acanthocephala were thought to be a discrete phylum. Recent genome analysis has shown that they are descended from, and should be considered as, highly modified rotifers. This is an example of molecular phylogenetics. This unified taxon is known as Syndermata.
== History ==
The earliest recognisable description of Acanthocephala – a worm with a proboscis armed with hooks – was made by Italian author Francesco Redi (1684).〔Crompton 1985, p. 27〕 In 1771, Joseph Koelreuter proposed the name Acanthocephala.〔 Philipp Ludwig Statius Müller independently called them ''Echinorhynchus'' in 1776.〔 Karl Rudolphi in 1809 formally named them Acanthocephala.

抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)
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