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Calyx nicaeensis

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© Anne Frijsinger & Mat Vestjens, Holland, Bild aus der Adria

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Courtesy of the author Anne Frijsinger & Mat Vestjens, Holland (Anne Frijsinger & Mat Vestjens, Holland) Image detail


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lexID:
5954 
AphiaID:
166932 
Scientific:
Calyx nicaeensis 
German:
Schwamm 
English:
Sponge 
Category:
Svampdjur 
Family tree:
Animalia (Kingdom) > Porifera (Phylum) > Demospongiae (Class) > Haplosclerida (Order) > Phloeodictyidae (Family) > Calyx (Genus) > nicaeensis (Species) 
Initial determination:
(Risso, ), 1826 
Occurrence:
Tunesien, Northern Africa, Adria, Egeiska havet, Medelhavet 
Size:
bis zu 20cm 
Temperature:
°C - 23°C 
Food:
Matspecialist, Plankton 
Difficulty:
6 - Mycket svår 
Offspring:
None 
Toxicity:
Toxic hazard unknown 
CITES:
Not evaluated 
Related species at
Catalog of Life
:
  • Calyx arcuarius
  • Calyx clavata
  • Calyx imperialis
  • Calyx infundibulum
  • Calyx kerguelensis
  • Calyx magnoculata
  • Calyx nyaliensis
  • Calyx podatypa
  • Calyx shackletoni
 
Author:
Publisher:
Meerwasser-Lexikon.de
Created:
Last edit:
2013-08-26 19:23:02 

Husbandry

(Risso, 1826)

The populations of Calyx nicaeensis have suffered a great decrease, drastically reducing in several areas of the Mediterranean Sea. This endangered and rare sponge at the present is still not included in any list of protected animal.
A specimen was observed in the August 2008 in the Protected Marine Area of Porto Cesareo (LE) on a coralligenous substrate at a depth of 30 m. This site is characterized by a very rich sponge assemblage where the branched sponge Axinella cannabina is the dominant species.

C. nicaensis shows a particular calyx morphology, sometimes it is characterized by an irregular and massive shape with several extensions thick 1-2 cm. The diameter of the calyx can reach 20 cm. The consistency is hard but fibrous. The colour is variable from beige to dark brown. The skeleton is constituted by a network of tiny siliceous needles (spicules) of two different size: great oxeas (100-150 ìm) and small oxeas (35-80 ìm).
In some site of the Eastern Mediterranean Sea, the sponge is still enough common and the old sponge fishermen use a small piece of the calyx sponge wetted in the sea water like a defogging. It is sufficient scrub the small piece on the glasses of the mask to be sure that during the immersion no fog will form inside it.

Text source: Reef check

External links

  1. Reef check (en)
  2. WoRMS (en)

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