Shrimp (Decapoda, Natantia) occurrence and distribution in the eastern Weddell Sea, Antarctica

Arntz, Wolf; Gorny, Matthias

doi:10.1007/bf00240205

Cited by 55 publications

(51 citation statements)

References 16 publications

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“…However, after the revision of the Nematocarcinidae (Tiefenbacher, 1990) it became obvious that his material contained only one species of this family, instead of two. Arntz and Gorny (1991) reported the occurrence of 5 benthic and 3 pelagic species from the Weddell Sea shelf. Tiefenbacher (1994) found 7 species in pelagic samples taken south of the Antarctic Convergence, among them the Eryoneicus stages of Stereomastis suhmi, but an adult specimen was never caught on the ground.…”

Section: Discussionmentioning

confidence: 99%

“…Later on, some more species were found during several expeditions to Antarctic and Subantarctic waters, but the first impression of a poor Antarctic decapod fauna prevailed for many years. When intense and continuous research programmes included also the high Antarctic waters, surprisingly, some large shrimp hauls were taken between 71°and 78°S in the south-eastern Weddell Sea (Voß, 1988;Arntz and Gorny 1991). Nevertheless, for a long period it was thought that south of the Antarctic Convergence all reptant decapods such as anomuran or brachyuran crabs were completely absent (Yaldwyn, 1965;Zarenkov, 1968;Kirkwood, 1984).…”

Section: Introductionmentioning

confidence: 99%

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On the biogeography and ecology of the Southern Ocean decapod fauna

1999

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SUMMARY:The biogeography and ecology of decapod crustaceans was described for the higher latitudes of the Southern Ocean. The analyzed area included the transitional or antiboreal region of the South American continental shelves (south of about 42°30'S), the Antarctic continental shelves, the Subantarctic islands of the Scotia and the Kerguelen Arcs, the deep sea south of about 42°S and the pelagic realm between the Subtropical Convergence and the Antarctic continent. A broad base of own data and a review of the literature revealed the presence of 98 benthic decapod species in the entire area, with 92 species on the continental shelves and around the Subantarctic islands, and 6 species in the deep sea. A total of 34 decapod species live in the pelagic system south of the Subtropical Convergence. About 50 % of the benthic species, nearly all deep-sea species, but only one pelagic decapod are endemic in the analyzed sectors of the Southern Ocean. Eualus kinzeri (Caridea: Hippolytidae) is the only endemic decapod of the Antarctic continental shelves. By means of a multivariate cluster analysis the antiboreal decapod fauna of South America was separated from the species living around Antarctica and the Subantarctic islands of the Scotia and Kerguelen Arc. In contrast to earlier studies the northern distribution limit of the Antarctic decapod fauna was set at approximately 55°30'S, and includes species which are distributed on the southern tip of South America. The species number in the antiboreal region of South America is 79, and higher than known before. The caridean shrimps are the most numerous group within the entire area, and together with the anomuran crabs, the palinuran and astacuran lobsters they demonstrate a high degree of eurybathy compared to the Brachyura. The restriction of the Brachyura to shallow-water zones is discussed as one reason, that caused the absence of this group on the Antarctic continental shelves after the successive elimination of the shallow-water fauna during glaciation of the southern hemisphere.Key words: Biogeography, decapod crustaceans, Southern Ocean.RESUMEN: LA BIOGEOGRAFÍA Y ECOLOGÍA DE LA FAUNA DE LOS CRUSTÁCEOS DECÁPODOS DEL OCÉANO AUSTRAL. -Se describe la biogeografía y ecología de crustáceos decápodos para altas latitudes del Océano Austral. El área analizada incluye la región antiboreal de las plataformas continentales sudamericanas (sur de 42º30'S), las plataformas continentales antárti-cas, las islas de los Archipiélagos de Escocia y Kerguelen, el mar profundo al sur cerca de los 42º y el reino pelágico entre la Convergencia Subtropical y el continente antártico. Una amplia base de datos, propios y bibliográficos, reveló la presencia de 98 especies de decápodos en el área; 92 de estas especies se encontraron sobre las plataformas continentales y alrededor de las islas subantárticas, mientras que 6 lo fueron en mar profundo. Un total de 34 especies de decápodos viven en el sistema pelágico al sur de la Convergencia Subtropical. Alrededor del 50% de las especies bentóni...

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

On the biogeography and ecology of the Southern Ocean decapod fauna

1999

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“…Nematocarcinus lanceopes is endemic to Antarctic waters of the Weddell and Scotia Seas (south of 55°30S) (Retamal 1981;Arntz and Gorny 1991;Boschi et al 1992;Gorny 1999). It is distributed from about 840 m water depth off the high Antarctic shelf to abyssal depths of at least 4,000 m (Gutt et al 1991;Arntz et al 1999;Gorny 1999;Romero et al 2003).…”

Section: Introductionmentioning

confidence: 99%

Larvae of the deep-sea Nematocarcinidae (Crustacea: Decapoda: Caridea) from the Southern Ocean

Thatje

Bacardit²,

Arntz

2004

Polar Biol

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The early larval stages of the deep-sea Nematocarcinidae, Nematocarcinus longirostris Bate, 1888, from the south-western Atlantic Ocean, and N. lanceopes Bate, 1888, from the high Antarctic Weddell Sea, were obtained from plankton catches, described and illustrated. Furthermore, field collected larvae of N. lanceopes were compared with larvae hatched and reared under constant laboratory conditions. The morphology of larvae in both species clearly indicates a planktotrophic and extended mode of larval development. This is an outstanding feature in deep-sea and especially in high-latitudinal caridean shrimp species, and the consequence of such reproductive trait for life history adaptations to both deep-sea and polar environments is discussed.

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“…The database utilised here includes species from the Magellan Province compiled by Boschi (2000a), and those with circum-Antarctic distribution and new species updated from the literature (Arntz and Gorny, 1991;Arntz et al, 1999;Boschi et al, 1992;Retamal, 2000;Zarenkov, 1968;Gorny, 1999;Kirkwood, 1984;Macpherson, 1988;Thatje and Gerdes, 2000;Thatje, 2000Thatje, , 2003Yaldwyn, 1965). The Magellan Province includes species present on both coasts, only in the Pacific or only in the Atlantic.…”

Section: Methodsmentioning

confidence: 99%

On the distribution of decapod crustaceans from the Magellan Biogeographic Province and the Antarctic region

Boschi¹,

Gavio²

2005

Sci. Mar.

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SUMMARY: The distribution of decapod crustaceans in the southernmost areas of South America and the Antarctic is assessed considering the Magellan Biogeographic Province instead of the antiboreal region. Possible associations between decapod crustaceans from the Magellan Biogeographic Province and those from the Antarctic region are analysed. Species records were assigned to seven geographic regions that were clustered using multivariate analyses based on species presence/absence and Bray-Curtis similarity. The results showed two well-established clusters, one of which included the Pacific and Atlantic areas of the Magellan Province, the southern tip of South America and the Kerguelen Arc islands, with the highest similarity between the southern tip and the Atlantic area. Another cluster was well separated and included the Antarctic and South Georgia with the highest similarity index. Earlier studies and results obtained here suggest that the faunas of southern Chile and southern Argentina are biogeographically related. There is a low level of association among decapod species from the circum-Antarctic region and the Magellan Province.Keywords: decapod crustaceans, Magellan Biogeographic Province, circum-Antarctic distribution.RESUMEN: SOBRE LA DISTRIBUCIÓN DE LOS CRUSTÁCEOS DECÁPODOS DE LA PROVINCIA BIOGEOGRÁFICA MAGALLÁNICA Y LA REGIÓN ANTÁRTICA. -Se estudió la distribución de los crustáceos decápodos en las áreas más australes de Sudamérica, considerando la Provincia Biogeográfica Magallánica en lugar de la región antiboreal. Se analizó la posible asociación entre los crustáceos de la Provincia Magallánica y los de la región antártica. Las especies registradas fueron asignadas a siete regiones geográficas, las que fueron agrupadas utilizando análisis de agrupamientos basado en presencia/ausencia de especies. Se utilizó el índice de similitud de Bray-Curtis. Los resultados mostraron dos grupos bien definidos de los cuales uno incluyó las áreas pacífica y atlántica de la Provincia Magallánica, la del extremo más austral de Sudamérica y las islas del Arco de Kerguelen. El otro grupo estuvo separado del anterior e incluyó la Antártida y las Islas Georgias con el índice de similitud más alto. Estudios anteriores y los resultados obtenidos en éste, sugieren que las faunas del sur de Chile y sur de Argentina se encuentran relacionadas. Existe baja asociación entre las especies actuales de crustáceos decápodos con distribución circumantártica y las de la Provincia Magallánica.Palabras clave: crustáceos decápodos, Provincia Biogeográfica Magallánica, distribución circumantártica.

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Shrimp (Decapoda, Natantia) occurrence and distribution in the eastern Weddell Sea, Antarctica

Cited by 55 publications

References 16 publications

On the biogeography and ecology of the Southern Ocean decapod fauna

On the biogeography and ecology of the Southern Ocean decapod fauna

Larvae of the deep-sea Nematocarcinidae (Crustacea: Decapoda: Caridea) from the Southern Ocean

On the distribution of decapod crustaceans from the Magellan Biogeographic Province and the Antarctic region

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