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Annelida
Annelida
Annelida A phylum of invertebrates comprising the segmented worms (e.g. the earthworm). Annelids have cylindrical soft bodies showing
metameric segmentation, obvious externally as a series of rings separating the segments. Each segment is internally separated from the next by a membrane and bears stiff bristles (see
chaeta). Between the gut and other body organs there is a fluid-filled cavity called the
coelom, which acts as a hydrostatic skeleton. Movement is by alternate contraction of circular and longitudinal muscles in the body wall. The phylum contains three classes:
Polychaeta,
Oligochaeta, and
Hirudinea.
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Reproductive biology and phylogeny of Annelida.(book)(Brief Article)(Book Review)
Magazine article from: SciTech Book News; 6/1/2006; 514 words
; ...Reproductive biology and phylogeny of Annelida. Ed. by Greg Rouse and Fredrik Pleijel...Reproductive biology and phylogeny; v.4 QL391 Annelida, commonly known as segmented worms...ecology. Papers on selected groups of annelida include non-leech clitellata, hiradina...
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Mitochondrial genome sequence and gene order of Sipunculus nudus give additional support for an inclusion of Sipuncula into Annelida.(Research article)(Report)
Magazine article from: BMC Genomics; 1/16/2009; ; 700+ words
; ...Other analyses found Sipuncula to be sister group of Mollusca, Annelida and Arthropoda [19], Articulata (Annelida and Arthropoda) [14], Echiura [20], Mollusca [21], Annelida [22] or Annelida+Echiura [23]. More details about the...
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Holopelagic Poeobius meseres ("Poeobiidae," Annelida) is derived from benthic flabelligerid worms.
Magazine article from: The Biological Bulletin; 6/1/2005; ; 700+ words
; ...segments, is the sole recognized representative of Poeobiidae (Annelida; Fig. 1). It has been recorded from the eastern Pacific...originally thought by Heath (1930) to be the link between the Annelida and "Echiuroidea," but later Pickford (1947, cited in...
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Annelida.(Brief Article)(Poem)
Magazine article from: Prairie Schooner; 3/22/2005; ; 538 words
; Annelida My husband is saving the worms again. All night, heavy rain, now the driveway crawls with worms, afraid of drowning, but so...
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Annelida polychaeta I.(CRITICA DE LIBROS)(Reseña de libro)
Magazine article from: Interciencia; 3/1/2006; ; 700+ words
; Vieitez JM, Alos C, Parapar J, Besteiro C, Morera J, Nunez J, Laborda J, San Martin G. (2004) Annelida Polychaeta I Ramos MA (Coord. editorial) Serie Fauna Iberica, Vol. 25. Museo Nacional de Ciencias Naturales/CSIC. Madrid...
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Molecular Evidence that Sclerolinum brattstromi Is Closely Related to Vestimentiferans, not to Frenulate Pogonophorans (Siboglinidae, Annelida).
Magazine article from: The Biological Bulletin; 8/1/2001; ; 700+ words
; ...within the phylum Pogonophora (Jones, 1981; Ivanov, 1994). Others place frenulates and vestimentiferans within the phylum Annelida (Land and N[phi]rrevang, 1977; Kojima et al., 1993; Bartolomaeus, 1995; McHugh, 1997; Rouse and Fauchald, 1997...
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Functional and Evolutionary Implications of Opposed Bands, Big Mouths, and Extensive Oral Ciliation in Larval Opheliids and Echiurids (Annelida).
Magazine article from: The Biological Bulletin; 8/1/1999; ; 700+ words
; ...food-groove cilia in ancestral opposed-band feeders. Introduction The trochophore is a larval form of several phyla: Annelida, Sipuncula, Mollusca, and Entoprocta (Nielsen, 1995). It is largely defined by the presence of the prototroch, a preoral...
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Neosabellaria vitiensis, n. sp. (Annelida: Polychaeta: Sabellariidae), from Shallow Water of Suva Harbor, Fiji (1).
Magazine article from: Pacific Science; 7/1/2007; ; 700+ words
; Abstract: A new species of the genus Neosabellaria Kirtley, 1994, is described from shallow-water locations of Suva Harbor, Fiji. Neosabellaria vitiensis Bailey-Brock, Kirtley, Nishi, & Pohler, n. sp., is a gregarious sabellariid; its tubes are constructed of sand and shell debris and form
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FIRST RECORD OF MEGARAMPHOPRION (ANNELIDA; POLYCHAETA) IN LAURENTIA
Magazine article from: Journal of Paleontology; 11/1/2008; ; 700+ words
; THE HUNTINGTON cluster (USNM 536849; Fig. 1) measures 4.1 mm in total length and is comprised of five elements of the maxillary apparatus; the first and second pair of maxillae (right and left MI and MII) and the basal plate (Bp) fitted into the bight of the right MI (for descriptive terminology
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 "Bulletin (Southern California Academy of Sciences)")
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Commented checklist of the polychaetes (Annelida: polychaeta) from areas adjacent to islands of the Mexican Pacific and Gulf of California.
Magazine article from: Bulletin (Southern California Academy of Sciences); 4/1/2003; ; 700+ words
; AbstractThe systematic list of the benthic polychaetes from areas adjacent to the main islands of the Mexican Pacific is herein presented. A total of 1375 specimens were analyzed from 96 species and 29 families; the specimens were collected from soft bottoms around Tiburon, Del Carmen and Maria
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Annelida
Book article from: Animal Sciences
Annelida The phylum Annelida includes three main groups: the earthworms, the leeches, and the bristleworms. Annelids are found worldwide, and inhabit terrestrial, freshwater, and marine ecosystems . There are over 15,000 described species...
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Burgess Shale and Ediacaran Faunas
Book article from: Animal Sciences
...members of the phyla Porifora (sponges), Annelida (segmented marine flatworms), Arthropoda...the aptly named Hallucigenia (phyla Annelida) is probably one of the most famous...which included only phyla Porifora, Annelida, Arthropoda, Echinodermata, and Chordata...
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Caullery, Maurice
Dictionary entry from: Complete Dictionary of Scientific Biography
...of the oozooid and the blastozooid. In the fixed polychaete Annelida he analyzed the important transformations connected with the...Orthonectida, discovered by Giard in 1877. While studying the Annelida gathered by the Dutch ship Siboga from the bottom of the Malay...
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Annelid
Book article from: Biology
...or true-segmented worms, are members of the animal phylum Annelida, the most complex of all wormlike groups of organisms. Annelids...Wiley & Sons, 1990. Fauchald, Kristian. "Worms, Annelida." In Encyclopedia of Biodiversity, Vol. 5. Edited by S...
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M‘intosh, William Carmichael
Dictionary entry from: Complete Dictionary of Scientific Biography
...vols. (London, 1873 – 1923); “ On the Annelida of the Porcupine Expeditions of 1869 and 1870, ”...of London , 9 (1876), 395 – 416; Report on the Annelida potychaeta collected by H. M. S, Challenger during the years...
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