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Asthenosoma (spines)
Beschrijving Venomous spines on the aboral side of Asthenosoma marisrubri and A. varium. a. Large secondary spine of A. marisrubri with a blister-like poison gland at the distal end, b. Large secondary spine of A. varium invested in a thick skin sheath annularly constricted and filled with venom. These are arranged in approximately rectangular areas (shaded in the ciagram below). This kind of spines is lacking in A. marisrubri, c. Small secondary spine of A. varium with a distal blister-like poison gland. These spines border the rectangular areas set with the large secondary spines (dots in the diagram below).Scale 3 mm. Modified from Weinberg & de Ridder (1998) JPG bestand - 57.27 kB - 478 x 945 pixels toegevoegd op 2011-02-23333 viewsUit bron Schultz, H. (2011). Sea urchins III: Worldwide regular de... © 2011 Schultz, Heinke Klik hier om terug te keren naar miniatuurweergave |
