Octodendron hamuliferum Hollande et Enjumet 1960.jpg
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Octodendron hamuliferum Hollande et Enjumet 1960.jpg<% linkedspecs %>
Current identification:
Original Description
Forme très voisine d'O. spathillatum de grande taille (1000µm) et, comme elle, pourvue de huit spicules. Tissu spongieux peu étendu, limité au côté interne, par une plaque grillagée nette : ce sont les branches des deux ou trois premiers verticilles spiculaires qui concourent à sa formation. Tissu arachnoïdal grêle, dépendant des rameaux des 9 à 10 verticilles suivants. Ces rameaux (trois par verticille) se renflent pour la plupart, avant de se dichotomiser, non loin de leur base, en un disque qui représente l'ébauche d'une spathille. Sous ce nom, Haeckel désigne d'élégantes arborisations terminées en grappin que portent les spicules, dans leur partie libre. Le nombre des pattes du grappin varie de 6 à 10. Des spathilles ornent également la surface du corps. Elles contribuent à retenir les proies dans le voisinage des pseudopodes.
[Very close to Octodendron spathillatum, of large size (1000µm), and with 8 radial beams. Spongious tissue not very much extended, internally bounded by a lattice plate. It is constituted by the branches of the two, or three, first verticils of the radial beams. Spider web-like tissue, thin, outgrowing from the branches of the 9 to 10 following verticils. These branches (3 per verticil) are, for the majority of them, inflated before being dichotomized, not far from their basis, as to form a disc, representing the first stage of a spathilla. Under this name, Haeckel designates some elegant ramifications terminated by a hook, that are located on the free ends of the radial beams. The terminations of the hooks may be 6 to 10. Spathillae are also located on the surface of the skeleton. They have straight pedonculae. They contribute to fix the preys near the pseudopodia. (In French. Translated by J.P.C.)]
Microsphere excentrical, rather different from the cubic shape, small 15-20µm. Internal lattice plate (d=150-180µm). Maximum width of spongious tissue 30µm, bars 3µm. Spider web-shaped tissue 400µm, bars 1µm. Three-sided radial beams with a twisted free end, total length 1000µm. Central capsule, up to 300µm.
Editors' Notes
Plankton, January 600, March 500, July 500, october 200-800, November 50-100-800m deep, December surface.
Hollande, A. & Enjumet, M. (1960). Cytologie, evolution et systematique des Sphaeroides (Radiolaires). Archives du Museum National d'Histoire Naturelle, Paris. 7: 1-134. gsReferences:
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Octodendron hamuliferum compiled by the radiolaria@mikrotax project team viewed: 5-3-2021
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