nephridium

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Related to nephridia: Malpighian tubules, parapodia

ne·phrid·i·um

(nə-frĭd′ē-əm)

n. pl. ne·phrid·i·a (-ē-ə)

1. A tubular excretory organ in many invertebrates, such as mollusks and earthworms.

2. The excretory organ of a vertebrate embryo from which the kidney develops.

[nephr(o)- + Latin -idium, diminutive suff. (from Greek -idion).]

ne·phrid′i·al 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.

nephridium

(nɪˈfrɪdɪəm)

n, pl -ia (-ɪə)

(Zoology) a simple excretory organ of many invertebrates, consisting of a tube through which waste products pass to the exterior

[C19: New Latin: little kidney]

neˈphridial adj

Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014

ne•phrid•i•um

(nəˈfrɪd i əm)

n., pl. -phrid•i•a (-ˈfrɪd i ə)

an excretory tubule in annelids, mollusks, and other invertebrates that discharges wastes from the body cavity through a pore on the body surface.

[1875–80; < Greek nephr(ós) kidney]

ne•phrid′i•al, adj.

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References in periodicals archive ?

Earthworms can detoxify Pb by storing it in waste amorphous granules, which are kept in the inert form within coelomic cells or are excreted through the segmental nephridia [42].

Metal Availability and Transfer along Food Chains in Siena, a Small Medieval Town in Italy

Excretory system meroic; a pair of dense fringes of micronephridia on segments 3 and 4; in 30 there are 32 to 36 avesiculate and astomate nephridia per segment.

NUEVAS LOMBRICES DE TIERRA ACANTHODRILIDAS DE LOS GENEROS PROTOZAPOTECIA Y TRIGASTER DE CUBA (ANNELIDA, CRASSICLITELLATA)

Oblique, transverse, 5-mm-thick sections, containing gills, digestive gland, mantle, nephridia, gonad, and foot were taken from each clam.

Mass mortalities affecting populations of the yellow clam Amarilladesma mactroides along its geographic range

Comparative morphology and evolution of the nephridia in Nemertea.

Salinity and temperature tolerance of the nemertean worm Carcinonemertes errans, an egg predator of the dungeness crab

Oblique transverse sections, approximately 5 mm thick, including mantle, gills, gonad, digestive gland, nephridia and foot were taken from each specimen.

Estudio histopatologico del chorito Mytilus chilensis (mytilidae) y del culengue Gari solida (psammobiidae) en el sur de Chile

Excretory system meroic; small number of nephridia, very difficult to find.

The role of museums in safeguarding biodiversity: a happy end of the century-long saga of Tritogenia zuluensis (Beddard, 1907) (Oligochaeta: Tritogeniidae)

1-3 pairs of anteclitellar nephridia observed in 7/8-9/10 (or none, in some individuals); postclitellar ones beginning in 13/14 or 14/15; compact postseptale of variable shape and with short duct arising posteriorly.

Estonian Enchytraeidae 4. Sublittoral Enchytraeidae (Annelida, Oligochaeta) in the eastern Baltic Sea/Eesti valgeliimuklased (Enchytraeidae) 4. Laanemere idaosa sublitoraali valgeliimuklased (Annelida, Oligochaeta)

On the paired nephridia of Prosobranchs, the homologies of the only remaining nephridium of most Prosobranchs, and the relations of the nephridia to the gonad and genital duct.

Microscopic anatomy of the reproductive system in two sympatric species of Fissurella bruguiere, 1789 (Mollusca: Vetigastropoda)/Anatomia microscopica del sistema reproductor en dos especies simpatricas del genero Fissurella bruguiere, 1789 (Mollusca: Vetigastropoda)

The gut was then freed from surrounding blood vessels and nephridia with a flamed forceps and separated into three sections: foregut, mid gut and hindgut.

Distribution of bacteria and fungi in the earthworm Libyodrillus violaceous (Annelida: Oligochaeta), a native earthworm from Nigeria

An unexpected and surprising result was the finding of coccidia in the gills of Ensis macha, because these Apicomplexan protozoa are usually located in nephridia or digestive glands in mollusks.

Histopathological assessment of broodstock of the razor clam Ensis macha (Pharidae) from the Tongoy Bay, Chile

Micro-PIXE studies of Cd distribution in the nephridia of the earthworm Eisenia fetida (Oligochaeta).

Molecular assessment of commercial and laboratory stocks of Eisenia spp. (Oligochaeta: Lumbricidae) from South Africa