Spicules – Mycale contarenii

Spicules: The megascleres typically are slightly curved (sub)tylostyles, thicker towards the pointed end, with a more or less pronounced head; length 220-(275)-320µm, varying between individuals. The microscleres includes palmate isochelae in 3 size groups. The largest are ca. 31-47µm and, when present in any numbers, are grouped into rosettes in the surface. The middle size (ca. 12-25µm) are solitary and variable in number (and may even be absent). The smallest isochelae are solitary, often abundant, with one tooth characteristically standing out from the shaft giving the spicule a noticeably angular profile, ca. 13-15µm. Sigmata (of two sizes) are present. The larger are numerous, robust and somewhat twisted, sizes generally in the range 40-65µm. The smaller are thinly scattered and very slender and consequently sometimes hard to find, ca. 16-22µm. Toxa are either single and scattered or, nearly always, in small bundles forming toxodragmata. They are small (ca. 20-70µm) and fine, with a widely extended central flexion. They are always present but sometimes rare and difficult to detect.

Sponges of British Isles – A Colour Guide and Working Document, 2007

By continuing to use the site, you agree to the use of cookies. more information

The cookie settings on this website are set to "allow cookies" to give you the best browsing experience possible. If you continue to use this website without changing your cookie settings or you click "Accept" below then you are consenting to this.