|Dense aggregations of three deep-sea holothurians in the southern Weddell Sea, Antarctica|
Gutt, J.; Piepenburg, D. (1991). Dense aggregations of three deep-sea holothurians in the southern Weddell Sea, Antarctica. Mar. Ecol. Prog. Ser. 68: 277-285
In: Marine Ecology Progress Series. Inter-Research: Oldendorf/Luhe. ISSN 0171-8630, more
Achlyonice violaecuspidata Gutt, 1990 [WoRMS]; Elpidia glacialis Théel, 1876 [WoRMS]; Scotoplanes globosa (Théel, 1879) [WoRMS]; Marine
Spatial distribution patterns of elasipod holothurians from the southern Weddell Sea were studied by analysing underwater photographs and trawl-catch data from 7 stations, ranging in depth from 240 to 1200 m. The 3 investigated species (Elpidia glacialis, Achlyonice violaecuspidata, Scotoplanes globosa) occurred in dense aggregations of differing spatial scale. For the first 2 species, median photographically determined densities within the patches were 17 and 6 ind. m-2 respectively. The size frequency distributions of all species were relatively broad. A behavioural communication between individuals assuring the formation and persistence of these aggregations is proposed.
- Asteroids, ophiuroids and holothurians from the South-Eastern Weddell Sea (Southern Ocean), more