ascidium

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as·cid·i·um

 (ə-sĭd′ē-əm)
n. pl. as·cid·i·a (ə-sĭd′ē-ə) Botany
A pitcher-shaped or bottle-shaped part or organ, such as the hollow tubular leaf of a pitcher plant.

[New Latin, from Greek askidion, diminutive of askos, wineskin.]

as·cid′i·ate′ adj.
as·cid′i·form′ (-ə-fôrm′) adj.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

ascidium

(əˈsɪdɪəm)
n, pl -cidia (-ˈsɪdɪə)
(Botany) part of a plant that is shaped like a pitcher, such as the modified leaf of the pitcher plant
[C18: from New Latin, from Greek askidion a little bag, from askos bag]
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
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Recent surveys of ascidians biodiversity on the northern Chilean coast (Clarke & Castilla, 2000; Schories et al., 2015; Turon et al., 2016a, 2016b) did not make any reference to members of the genus Ascidia. Only one previous study reported the species A.
phlebobranch Ascidia challengeri Herdman, 1882) survive periods of turbulent sediment by reducing filtering efficiency (Torre et al.
Station Ascidia aspersa (Tunicate) 320 18 - Hippocampus hippocampus (Seahorse) 11 2 1 Liocarcinus depurator (Crab) 63 124 80 Species IV.
nigra are complicated by this species' many synonyms: Ascidia nigra Heller, 1878, Ascidia atra Lesueur, 1823, Ascidia somalensis Sluiter, 1905, Phallusia atra Traustedt, 1882, Phallusia violacea Gould, 1852, Phallusiopsis nigra Hartmeyer, 1909, Thallusia nigra Hartmeyer, 1908, Tunica nigra Hilton, 1913; but most reports in the last 70 years have used either Ascidia nigra or Phallusia nigra, with a preference for Phallusia in recent years (Shenkar and Swalla, 2011).
Even longer sperm longevities of more than 24 h were reported in the ascidians Ascidia mentula [30].
At Kleinzee, we identified the following suspension-feeding epibionts on the oysters themselves: barnacles (Notomegabalanus algicola), black mussels (Choromytilus meridionalis), and ascidians (Ciona intestinalis and Ascidia candata).
In an area with rocky substrate at 30 m depth, the seafloor was first colonized by erect bryozoans (Crisia eburnea and Idmidronea atlantica) and the polychaete Spirorbis spp., while later colonizers included the ascidians Aplidium pallidum and Ascidia callosa (Witman, 1998).