siphonoglyph


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siphonoglyph

[sī′fän·ə‚glif]
(invertebrate zoology)
A ciliated groove leading from the mouth to the gullet in certain anthozoans.
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The two filaments on the side opposite the siphonoglyph (the narrow, flagellated groove of the pharynx) are the longest and thickest, and are often bilobed; the filaments on the other six mesenteries contain digestive gland cells, and produce gonads (Fabricius and Alderslade, 2001).
Other three species of this genus have been inferred to reproduce asexually based upon their aggregation habit and the irregularity of some characters like number of mesenteries and siphonoglyphs. Based on the existence of aggregations, of regenerating individuals, and on the complete absence of gonads in anemones from some localities, Anthopleura krebsi has been presumed to be able to reproduce asexually (Carlgreen and Hedgepeth 1952, Belem and Pinto 1990, Gomes and Mayal 1997).