Chondrocladia Temporal range: Pleistocene(?) to Present day | |
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The ping-pong tree sponge, Chondrocladia lampadiglobus [1] [2] | |
Scientific classification | |
Domain: | Eukaryota |
Kingdom: | Animalia |
Phylum: | Porifera |
Class: | Demospongiae |
Order: | Poecilosclerida |
Family: | Cladorhizidae |
Genus: | Chondrocladia Thomson, 1873 |
Species | |
33; see text | |
Synonyms | |
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Chondrocladia is a genus of carnivorous demosponges of the family Cladorhizidae. [3] Neocladia was long considered a junior synonym, but has recently become accepted as a distinct genus. [4]
33 named species are placed in this genus at present, but at least two additional undescribed ones are known to exist, while some of the described ones are known only from a few specimens or (e.g. the enigmatic Chondrocladia occulta ) just a single one, and their validity and/or placement in Chondrocladia is doubtful. Chondrocladia sponges are stipitate, with a stalk frequently anchored in the substrate by rhizoids and an egg-shaped body, sometimes with branches that end in inflatable spheres. [5] [6]
Fossils assignable to this genus are known since the Pleistocene, [7] less than 2 million years ago. But given its deep sea habitat, Chondrocladia may well have been around for much longer – perhaps since the Mesozoic, as characteristic spicules (termed "microcricorhabds" or "trochirhabds"), almost identical to those of some living Chondrocladia, are known from Early Jurassic rocks almost 200 million years old. [6]
These sponges gained media attention when a new species, a gourd-shaped carnivorous sponge, was featured in reports of finds off the coast of Antarctica. The new Chondrocladia was one of 76[ citation needed ] sponge species identified in the seas off Antarctica by the Antarctic Benthic Deep-Sea Biodiversity Project (ANDEEP) between 2002 and 2005, conducted aboard the German research vessel Polarstern . [8] [9]
Carnivorous sponges, which use hooked spicules to capture small crustaceans, have been known only since 1995, when Asbestopluma hypogea , another genus of the family Cladorhizidae, was identified in Mediterranean sea caves offshore La Ciotat (France) by Jean Vacelet and Nicole Boury-Esnault. [10] Carnivory has since turned out to be common and typical for this sponge family. [11] [4] Unlike their relatives, Chondrocladia still possesses the water flow system and choanocytes typical of sponges, albeit highly modified to inflate balloon-like structures that are used for capturing prey. [4] [6]
The known species of Chondrocladia are: [6] [3]
C. alaskensis and C. pulchra are better placed in Crambe [5] or Monanchora . [3]
C. dura, C. ramosa and C. sessilis are junior synonyms of Iotrochota purpurea . [3]
Cladorhiza is a genus of carnivorous sponges, comprising around 40 species found in oceans around the world. Cladorhiza is the type genus of the family Cladorhizidae.
Polymastia is a genus of sea sponges containing about 30 species. These are small to large encrusting or dome-shaped sponges with a smooth surface having many teat-shaped projections (papillae). In areas of strong wave action, this genus does not grow the teat structures, but instead grows in a corrugated form.
Plakinidae is a family of marine sponges. It is composed of seven genera:
Auletta is a genus of sponges in the family Bubaridae.
Homaxinella is a genus of sea sponges in the family Suberitidae. The type species is Homaxinella balfourensis.
Agelas is a genus of sea sponge in the class Demospongiae.
Cladorhizidae is a family of carnivorous demosponges found in deep-sea environments worldwide. These sponges are known for their unique feeding structures and predatory behavior, as they capture and consume small animals such as crustaceans.
Cladorhiza caillieti is a carnivorous sponge of the family Cladorhizidae described in 2014 from specimens collected from the Juan de Fuca Ridge off the coast of Vancouver Island. It feeds on small crustaceans such as amphipods and copepods. C. caillieti is an elongate, bottlebrush-shaped sponge with filaments projecting from a main stem, and ranges from 7 to 9 cm in height. The specific epithet honors Dr. Gregor M. Cailliet of the Moss Landing Marine Laboratories.
Chondrocladia concrescens is a species of deep-sea carnivorous sponge in the family Cladorhizidae. It is commonly known as the "ping pong tree sponge" due to its distinctive tree-like shape with multiple branches. The species is found in the eastern Pacific Ocean and can grow up to one meter in height.
Axoniderma is a genus of carnivorous demosponges in the family Cladorhizidae.
Ciocalypta is a genus of sea sponges belonging to the family Halichondriidae.
Jean Vacelet is a French marine biologist who specialises in the underwater fauna of the Mediterranean. After earning his licence at the Faculté des Sciences de Marseille and learning to dive in 1954, he specialised in the study of sponges at the Marine station of Endoume, and there he has stayed faithful to both sponges and place for more than half a century. His research has included all aspects of sponges: taxonomy, habitat, biology, anatomy, their bacterial associations, and their place in the evolution of multi-celled animals. He has studied them not only in the Mediterranean but in the Indian Ocean and the Pacific. Exploration of underwater grottoes, together with Jacques Laborel and Jo Hamelin, revealed the existence of sponges dating from very ancient geological periods and the unexpected existence of carnivorous sponges, and surprisingly, the grottoes in some ways mimicked life at much greater depths.
Leucetta is a genus of sponges in the family Leucettidae, which was first described in 1872 by Ernst Haeckel. The type species is Leucetta primigenia Haeckel, 1872 by subsequent designation.
Coelosphaeridae is a family of sponges belonging to the order Poecilosclerida. Species are found across the globe.
Phakellia is a genus of sponges belonging to the family Bubaridae. The genus has a cosmopolitan distribution.
Phorbas is a genus of demosponges belonging to the family Hymedesmiidae.
Abyssocladia is a genus of the family Cladorhizidae, a family of carnivorous sponges. It is made up of at least 39 species found in oceans all over the world.
Axoniderma poritea is a species of demosponge in the family Cladorhizidae. It is known from type specimens found on the east coast of Australia.
Halicnemia is a genus of sponges belonging to the family Stelligeridae.