Eisenia (annelid)

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Eisenia
Redwiggler1.jpg
Eisenia fetida
Scientific classification Red Pencil Icon.png
Kingdom: Animalia
Phylum: Annelida
Class: Clitellata
Order: Opisthopora
Family: Lumbricidae
Genus: Eisenia
Michaelsen, 1900
Type species
Eisenia fetida
Species

Eisenia andrei
Eisenia fetida
Eisenia gordejeffi
Eisenia hortensis
Eisenia intermedia
Eisenia japonica
Eisenia kattoulasi
Eisenia lucens
Eisenia nordenskioldi
Eisenia parva
Eisenia rosea
Eisenia spelaea
Eisenia uralensis

Eisenia is a genus of earthworms (annelids), named after Swedish scientist Gustav Eisen.

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<span class="mw-page-title-main">Polychaete</span> Class of annelid worms

Polychaeta is a paraphyletic class of generally marine annelid worms, commonly called bristle worms or polychaetes. Each body segment has a pair of fleshy protrusions called parapodia that bear many bristles, called chaetae, which are made of chitin. More than 10,000 species are described in this class. Common representatives include the lugworm and the sandworm or clam worm Alitta.

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Lophotrochozoa is a clade of protostome animals within the Spiralia. The taxon was established as a monophyletic group based on molecular evidence. The clade includes animals like annelids, molluscs, bryozoans, brachiopods, and platyhelminthes.

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<span class="mw-page-title-main">Clitellum</span> Anatomic feature

The clitellum is a thickened glandular and non-segmented section of the body wall near the head in earthworms and leeches, that secretes a viscid sac in which eggs are stored. It is located near the anterior end of the body, between the fourteenth and seventeenth segments. The number of the segments to where the clitellum begins and the number of segments that make up the clitellum are important for identifying earthworms. In microdrile earthworms, the clitellum has only one layer, resulting in a smaller quantity of eggs than that of the megadrile earthworms, which have larger multi-layered clitellum that have special cells that secrete albumin into the worms' egg sac.

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<i>Eisenia fetida</i> Species of annelid worm

Eisenia fetida, known under various common names such as redworm, manure worm, brandling worm, panfish worm, trout worm, tiger worm, red wiggler worm, etc., is a species of earthworm adapted to decaying organic material. These worms thrive in rotting vegetation, compost, and manure. They are epigean, rarely found in soil. In this trait, they resemble Lumbricus rubellus.

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The Clitellata are a class of annelid worms, characterized by having a clitellum - the 'collar' that forms a reproductive cocoon during part of their life cycles. The clitellates comprise around 8,000 species. Unlike the class of Polychaeta, they do not have parapodia and their heads are less developed.

Eisenia may refer to:

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Gustavus Augustus Eisen was a Swedish-American polymath. He became a member of California Academy of Sciences in 1874 and a Life Member in 1883. In 1893, he became the 'Curator of Archaeology, Ethnology, and Lower Animals' at the Academy. He later changed titles to 'Curator of Marine Invertebrates'. In 1938, he was appointed as an 'Honorary Member', which is considered the highest honor from the Academy.

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References