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Sitjà, C.; Maldonado, M.; Farias, C.; Rueda, J.L. (2019). Deep-water sponge fauna from the mud volcanoes of the Gulf of Cadiz (North Atlantic, Spain). Journal of the Marine Biological Association of the United Kingdom. 99 (4): 807 - 831.
307113
10.1017/s0025315418000589 [view]
Sitjà, C.; Maldonado, M.; Farias, C.; Rueda, J.L.
2019
Deep-water sponge fauna from the mud volcanoes of the Gulf of Cadiz (North Atlantic, Spain)
Journal of the Marine Biological Association of the United Kingdom
99 (4): 807 - 831
Publication
Available for editors  PDF available [request]
Mud volcanoes are singular seafloor structures classified as ‘sensitive habitats’. Here we report on the sponge fauna from a field of eight mud volcanoes located in the Spanish margin of the northern Gulf of Cadiz (North-eastern Atlantic), at depths ranging from 380 to 1146 m. Thirty-eight beam-trawl samplings were conducted (covering over 61,000 m2) from 2010 to 2012, in the frame of a EC-LIFE + INDEMARES grant. A total of 1659 specimens were retrieved, belonging to 82 species, from which 79 were in the Class Demospongiae and three in Hexactinellida. Two species were new to science (Jaspis sinuoxea sp. nov.; Myrmekioderma indemaresi sp. nov.) and three others recorded for the first time in the Atlantic Ocean (Geodia anceps, Coelosphaera cryosi and Petrosia raphida). Five additional species were ‘Atlantic oddities’, since this study provides their second record in the Atlantic Ocean (Lanuginella cf. pupa, Geodia cf. spherastrella, Cladocroce spathiformis, Cladocroce fibrosa and Haliclona pedunculata). Basic numerical analyses indicated a significant linear relationship between the species richness per m2 and the number of sponge individuals per m2, meaning that in most volcanoes many species occur in equivalent, moderate abundance. Likewise, sponge species richness increased with depth, while the abundance of hard substrata resulting from carbonate precipitation and the fishing activities around the volcanoes had no detectable effect on the sponge fauna. However, in the latter case, a negative trend – lacking statistical support – underlaid the analyses, suggesting that a more extensive sampling would be necessary to derive more definitive conclusions in this regard.
Eastern Atlantic warm temperate to boreal
Systematics, Taxonomy
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Date
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2018-09-15 09:26:51Z
created
2018-11-13 08:33:42Z
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2019-06-01 12:14:34Z
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2019-06-01 16:01:32Z
changed

South European Atlantic Shelf for Cladocroce fibrosa (Topsent, 1890) 
South European Atlantic Shelf for Cladocroce spathiformis Topsent, 1904 
South European Atlantic Shelf for Coelosphaera (Histodermion) cryosi (Boury-Esnault, Pansini & Uriz, 1994) 
South European Atlantic Shelf for Geodia anceps (Vosmaer, 1894) 
South European Atlantic Shelf for Geodia anceps (Vosmaer, 1894) 
South European Atlantic Shelf for Geodia spherastrella Topsent, 1904 
South European Atlantic Shelf for Haliclona (Rhizoniera) pedunculata (Boury-Esnault, Pansini & Uriz, 1994) 
South European Atlantic Shelf for Jaspis sinuoxea Sitjà, Maldonado, Farias & Rueda, 2019 
South European Atlantic Shelf for Lanuginella pupa Schmidt, 1870 
South European Atlantic Shelf for Lycopodina hypogea (Vacelet & Boury-Esnault, 1996) 
South European Atlantic Shelf for Myrmekioderma indemaresi Sitjà, Maldonado, Farias & Rueda, 2019 
South European Atlantic Shelf for Petrosia (Petrosia) raphida Boury-Esnault, Pansini & Uriz, 1994 
Spanish Exclusive Economic Zone [Atlantic part] for Myrmekioderma indemaresi Sitjà, Maldonado, Farias & Rueda, 2019 
Holotype MNCN P10-10BT06, geounit South European Atlantic Shelf, identified as Myrmekioderma indemaresi Sitjà, Maldonado, Farias & Rueda, 2019
Holotype MNCN P70-11BT17A, geounit South European Atlantic Shelf, identified as Jaspis sinuoxea Sitjà, Maldonado, Farias & Rueda, 2019


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