Overview

Distribution

Bipolar species; Antarctic (S. Sandwich Islands, Pacific Ocean), Spitsbergen, Arctic Basin, Kuril Islands

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© Elizaveta A. Ershova

Source: iArcZoo

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Physical Description

Morphology

Female: Posterior corners of the last thoracic segment reach the middle of the genital segment, and end with small conical bumps. Abdomen is 3.8 times shorter than the cephalothorax. A1 is almost as long as the body.Genital segment is symmetrical. P1-P4 are typical for genus. Coxopodite of P4 with 10-12 spines.

Male: Abdomen is 3.2 times shorter than the cephalothorax. Posterior corners of the last thoracic segment lack spines. A1 reach the fourth abdominal segment. The distal part of the second segment of the exopodite of P5 is sabre-shaped.

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© Elizaveta A. Ershova

Source: iArcZoo

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Size

Female: 5,58-6,10 mm
Male: 5,40 mm

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Source: iArcZoo

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Type Information

Holotype for Pseudochirella batillipa Park, 1978
Catalog Number: USNM 141283
Collection: Smithsonian Institution, National Museum of Natural History, Department of Invertebrate Zoology
Sex/Stage: female;
Preparation: Alcohol (Ethanol)
Collector(s): Smithsonian Oceanographic Sorting Center
Year Collected: 1965
Locality: Antarctic Ocean
Depth (m): 2560 to 2560
Vessel: Eltanin R/V
  • Holotype:
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© Smithsonian Institution, National Museum of Natural History, Department of Invertebrate Zoology

Source: National Museum of Natural History Collections

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Paratype for Pseudochirella batillipa Park, 1978
Catalog Number: USNM 141284
Collection: Smithsonian Institution, National Museum of Natural History, Department of Invertebrate Zoology
Sex/Stage: female;
Preparation: Alcohol (Ethanol)
Collector(s): Smithsonian Oceanographic Sorting Center
Year Collected: 1965
Locality: Antarctic Ocean
Depth (m): 2560 to 2560
Vessel: Eltanin R/V
  • Paratype:
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© Smithsonian Institution, National Museum of Natural History, Department of Invertebrate Zoology

Source: National Museum of Natural History Collections

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Ecology

Habitat

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

Environmental ranges
  Depth range (m): 1812 - 2560
  Temperature range (°C): 0.112 - 0.938
  Nitrate (umol/L): 31.760 - 33.705
  Salinity (PPS): 34.669 - 34.711
  Oxygen (ml/l): 4.572 - 5.031
  Phosphate (umol/l): 2.191 - 2.375
  Silicate (umol/l): 117.645 - 130.281

Graphical representation

Depth range (m): 1812 - 2560

Temperature range (°C): 0.112 - 0.938

Nitrate (umol/L): 31.760 - 33.705

Salinity (PPS): 34.669 - 34.711

Oxygen (ml/l): 4.572 - 5.031

Phosphate (umol/l): 2.191 - 2.375

Silicate (umol/l): 117.645 - 130.281
 
Note: this information has not been validated. Check this *note*. Your feedback is most welcome.

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Oceanic, bathy- to abyssopelagic species.

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© Elizaveta A. Ershova

Source: iArcZoo

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