与 «DIACTINAL»相关的英语书籍
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Family Crellidae Hentschel Poecilosclerida with a principal skeleton of diactinal
megaslceres arranged in plumose or plumoreticulate fibrous tracts, often
echinated by acanthostyles. The dermal skeleton is a dense layer of
acanthostyles.
Patricia R. Bergquist, 1978
2
A Dictionary for Invertebrate Zoology:
[L. dexter, right; vertere, to twist] An organism spirally twisting to the right. see
sinistrorse. diacresis see diaeresis diactinal a. [Gr. dis, twice; aktis, ray] Being
pointed at both ends. diactinal monaxon (PORIF) A monaxon that develops by
growing ...
3
Chemical Zoology V2: Porifera, Coelenterata, And Platyhelminthes
The calcareous spicules of the Calcarea are fine needles, pointed at both ends:
the diactinal oxea. Each spicule is formed by a mesenchymal cell, the scleroblast.
While the scleroblast is secreting its spicule, it divides into two daughter cells, ...
4
Modern Text Book of Zoology: Invertebrates
2-Diactinal monaxon 3 -Curved monaxon. 4-Triaenes. 5 & 6-Tetraxon calthrops.
7-Triradiate. 8 -Monaxon with ends hooked (anphidisc). 9-Hexactinal triaxon. 10
& 11-Potyaxons. 12-Spongin fibres. marketable size in about 7 years. Sponges ...
Monactinal Diactinal Curved Monaxon with Tctraxon monaxon monaxon
monaxon hook ends Triradiate Calthrops Hcxactinal g triaxon Polyaxon Polyaxon
Figure 4.7 Spicules and spongin. Spiculc {a 0 End of . ' iculc Sclcroblast 5p
Founder ...
6
Sponges of the New Caledonian Lagoon
Monaxonic Linear spicule with no more than two rays along one axis, including
both monactinal and diactinal spicules; also known as monaxonid (cf. triaxonid,
tetraxonidt. Mueronate Sharply pointed. Multispicular More than one row of ...
7
The Marine Fauna of New Zealand: Porifera, Demospongiae, ...
Family TEDANIIDAE Hentschel, 1923 Tedaniina Ridley & Dendy, 1886
Tedaniinae Ridley & Dendy, 1887 Diagnosis: Poecilosclerida with a
choanosomal skeleton of monactinal and/or diactinal megascleres which are
organised into plumose ...
Patricia R. Bergquist, P. J. Fromont, 1988
8
A Student's Text-book of Zoology: Protozoa to Chaetognatha
Shizochalina Schmidt ; Occanapia Norman. Sub-fam. 2. Gelliinae. Megascleres
all diactinal, oxea, or strongyla, Microsclera as sigmata or toxa ; no rind or fistulse
. Gellius Gray ; Gtlliodcs Ridley ; ToxocJuilinn Ridley. Sub-fam. 3. Tedaniinse.
Adam Sedgwick, Joseph Jackson Lister, Sir Arthur Everett Shipley, 1808
9
The Marine Fauna of New Zealand: Porifera, Demospongiae, ...
description of this sponge by Bergquist (1961) was based upon a small piece of
fixed tissue and only the peculiar, regularly notched diactinal 'spicules' permitted
description as a new species. The recorded dark red-brown colour is consistent ...
Patricia Rose Bergquist, 1996
10
The Light and Smith Manual: Intertidal Invertebrates from ...
... along a single axis. If growth occurs in a single direction (indicated by the
presence of one point), the spicule is a monactinal monaxon (plates 17A, 20A-
20D); if growth occurs in both directions, it is a diactinal monaxon (plates 17B,
20E-20J).
Sol Felty Light, James T. Carlton, 2007
