Overview

Comprehensive Description

Description

Ammotrypane breviata, Ehlers.

 

Ehlers, 1913 p. 523, pl. xxxix, figs. 1-7.

 

St. 167. 20. ii. 27. Off Signy Island, South Orkneys. 60° 50' 30" S, 46" 15' 00" W. 244-344 m. Gear N 4-T. Bottom: green mud. Nine specimens.

 

REMARKS. The largest example measures 34 mm. by 2 mm. The number of chaetigers is 28. The specimens correspond exactly to the description and figures of this species. They have gills on every chaetiger except the 1st and the last four modified chaetigers. The anal cylinder is very faintly and irregularly ringed, and its dorsal peak is much more prominent than the ventral.”

 

(Monro, 1930)

Creative Commons Attribution Non Commercial 3.0 (CC BY-NC 3.0)

© National Museum of Natural History, Smithsonian Institution

Source: Antarctic Invertebrates Website (NMNH)

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Ecology

Habitat

Depth range based on 9 specimens in 1 taxon.
Water temperature and chemistry ranges based on 7 samples.

Environmental ranges
  Depth range (m): 94 - 1079
  Temperature range (°C): -1.916 - 0.444
  Nitrate (umol/L): 12.446 - 31.980
  Salinity (PPS): 34.085 - 34.836
  Oxygen (ml/l): 4.902 - 6.547
  Phosphate (umol/l): 0.965 - 2.242
  Silicate (umol/l): 10.686 - 112.776

Graphical representation

Depth range (m): 94 - 1079

Temperature range (°C): -1.916 - 0.444

Nitrate (umol/L): 12.446 - 31.980

Salinity (PPS): 34.085 - 34.836

Oxygen (ml/l): 4.902 - 6.547

Phosphate (umol/l): 0.965 - 2.242

Silicate (umol/l): 10.686 - 112.776
 
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