Suprabenthic assemblages from South Shetland Islands and Bransfield Strait (Antarctica): preliminary observations on faunistical composition, bathymetric and near-bottom distribution

Vicente, Carlos San; Ramos, A.; Jimeno, Antonio; Sorbe, Jean Claude

doi:10.1007/s003000050208

Cited by 33 publications

(12 citation statements)

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“…The lower values of abundance and species number observed in Deception Island caldera has been attributed to the recent volcanic activity that could have destroyed benthic communities (Gallardo, 1992). The present acidic conditions in the surperficial sediments (San Vicente et al, 1997) may also have contributed.…”

Section: Discussionmentioning

confidence: 93%

Systematics and distribution of cumaceans collected during BENTAR-95 cruise around South Shetland Islands (Antarctica)

Corbera¹

2000

Sci. Mar.

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SUMMARY: During the BENTART-95 cruise, 24 stations around the South Shetland Islands and Trinity Island, ranging from 45 to 649 m bottom depth, were sampled using a Macer-GIROQ sledge. Alltogether, 1236 specimens of cumaceans belonging to 25 species were captured. Four of them are new species named Cumella emergens, Procampylaspis halei, Campylaspis heterotuberculata and Leucon (Crymoleucon) costatus. Distribution of cumaceans in this area is depth-dependent and the highest diversity was observed at the deeper station. A total of 68 species have been recorded from Antarctic and Subantarctic waters, the greatest part (47 species) were found between 50 and 300 m depth; only 3 species inhabit below 2,500 m depth. Antarctic cumacean fauna shows a high degree of endemism at a specific level (91%), however, only one genus of 19 is endemic. By regions, the Kerguelen Islands have the highest percentage of endemic species (56%). Antarctic cumaceans do not seem to have a common origin, some species could have colonized Antarctica through Scotia Arc (as the genus Campylaspis) or emerged from deep-sea while others may be radiated from Antarctica to lower latitudes (as the species of subgenus Crymoleucon).

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Section: Discussionmentioning

confidence: 93%

Systematics and distribution of cumaceans collected during BENTAR-95 cruise around South Shetland Islands (Antarctica)

Corbera¹

2000

Sci. Mar.

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“…Apparently, the silicates are not important for the pycnogonids because they have no silicates as structural components. In respect to depth, San Vicente et al (1997) mention that it is the only important abiotic factor of six tested in waters around Livingston Island. Synthetic data about the bathymetric distribution of Austral species are shown in Table 5.…”

Section: Ecologymentioning

confidence: 98%

Synopsis of the pycnogonids from Antarctic and Subantarctic waters

Le�n¹

2001

Polar Biology

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This work summarizes existing knowledge on the faunal history, biodiversity and biogeography of the Antarctic and Subantarctic pycnogonids. It refers to material sampled between 1829 and 1999 from more than 40 expeditions run by 14 countries, and published in 75 papers. Up to now, 31 genera and 25 species have been recorded from a total of about 38,000 specimens captured at 2,000 stations. They constitute 38.75% and 21.5%, respectively, of the 80 genera and 1,164 species recorded worldwide. One hundred and twenty species have been found in Antarctic, 71 in Subantarctic waters, and 60 species in both zones, yielding an endemicity for the entire area of over 80%. Fifty ®ve species revealed a circumpolar distribution and 161 were found mainly on the shelf. The Antarctic Ocean is suggested to be a centre of pycnogonid speciation and dispersion.

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“…Every layer has an opening of 80 cm width and 41 cm height. The sled is equipped with an opening closing-system activated by contact with the sea-floor (preventing contamination by pelagic organisms from the water column) (San Vicente et al 1997;San Vicente et al 2006). The sledge was hauled over the ground for 2-4 min at a mean velocity of 1.5-2 knots.…”

Section: Methodsmentioning

confidence: 99%

A new species of <i>Marumomysis</i> (Mysidacea: Mysidae: Erythropini) from the benthos of the Bellingshausen Sea (Southern Ocean)

Vicente¹

2007

Sci. Mar.

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SUMMARY: A new mysid species, Marumomysis antarctica n. sp., is described from specimens sampled with a suprabenthic sled in the Bellingshausen Sea (Southern Ocean). The new mysid is characterised by the small eyes lacking visual elements and with a long horn projecting anteriodorsally, the trilobate labrum and the shape and armature of the endopod of the uropod and telson. This new species is the first Marumomysis species described from the benthos (1320-1895 m depth) of the Southern Ocean.Keywords: taxonomy, Crustacea, Peracarida, Mysidae, Bellingshausen Sea, Antarctica.RESUMEN: UNA NUEVA ESPECIE DE MARUMOMYSIS (MYSIDACEA: MYSIDAE: ERYTHROPINI) DEL BENTOS PROFUNDO DEL MAR DE BELLINGSHAUSEN (OCÉANO AUSTRAL). -Una nueva especie de misidáceo, Marumomysis antarctica n. sp., se describe en base a los ejemplares muestreados con un trineo suprabentónico en el mar de Bellingshausen (Océano Austral). La nueva especie de misidáceo se caracteriza por poseer unos ojos pequeños, sin elementos visuales y provistos de un cuerno que se proyecta anterodorsalmente, un labro trilobado y la forma y armadura del endopodio del urópodo y del telson. Esta nueva especie es la primera del género Marumomysis descrita en el bentos profundo (1320-1895 m) del Océano Austral.

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Suprabenthic assemblages from South Shetland Islands and Bransfield Strait (Antarctica): preliminary observations on faunistical composition, bathymetric and near-bottom distribution

Cited by 33 publications

References 0 publications

Systematics and distribution of cumaceans collected during BENTAR-95 cruise around South Shetland Islands (Antarctica)

Systematics and distribution of cumaceans collected during BENTAR-95 cruise around South Shetland Islands (Antarctica)

Synopsis of the pycnogonids from Antarctic and Subantarctic waters

A new species of <i>Marumomysis</i> (Mysidacea: Mysidae: Erythropini) from the benthos of the Bellingshausen Sea (Southern Ocean)

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