Physical Description

Type Information

Holotype for Nautilus belauensis Saunders, 1981
Catalog Number: USNM 730549
Collection: Smithsonian Institution, National Museum of Natural History, Department of Invertebrate Zoology
Sex/Stage: male;
Preparation: Dry; Isopropyl Alcohol
Collector(s): W. Saunders
Year Collected: 1977
Locality: Augupelu Reef, Mutremdiu Point, Palau, North Pacific Ocean
Depth (m): 183 to 305
  • Holotype: Saunders, W. B. 1981. Veliger. 24(1): 1-7.; Saunders, W. B. 1981. The Veliger. 24(1): 1-7.
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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 Nautilus belauensis Saunders, 1981
Catalog Number: USNM 730546
Collection: Smithsonian Institution, National Museum of Natural History, Department of Invertebrate Zoology
Sex/Stage: female;
Preparation: Alcohol (Ethanol)
Collector(s): W. Saunders
Year Collected: 1977
Locality: Augupelu Reef, Mutremdiu Point, Palau, North Pacific Ocean
Depth (m): 183 to 305
  • Paratype: Saunders, W. B. 1981. Veliger. 24(1): 1-7.; Saunders, W. B. 1981. The Veliger. 24(1): 1-7.
Creative Commons Attribution 3.0 (CC BY 3.0)

© Smithsonian Institution, National Museum of Natural History, Department of Invertebrate Zoology

Source: National Museum of Natural History Collections

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Paratype for Nautilus belauensis Saunders, 1981
Catalog Number: USNM 730673
Collection: Smithsonian Institution, National Museum of Natural History, Department of Invertebrate Zoology
Sex/Stage: male;
Preparation: Dry
Collector(s): W. Saunders
Year Collected: 1977
Locality: Augupelu Reef, Mutremdiu Point, Palau, North Pacific Ocean
Depth (m): 305 to 305
  • Paratype: Saunders, W. B. 1981. Veliger. 24(1): 1-7.; Saunders, W. B. 1981. The Veliger. 24(1): 1-7.
Creative Commons Attribution 3.0 (CC BY 3.0)

© Smithsonian Institution, National Museum of Natural History, Department of Invertebrate Zoology

Source: National Museum of Natural History Collections

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Paratype for Nautilus belauensis Saunders, 1981
Catalog Number: USNM 730672
Collection: Smithsonian Institution, National Museum of Natural History, Department of Invertebrate Zoology
Sex/Stage: ; larvae
Preparation: Dry
Collector(s): W. Saunders
Year Collected: 1978
Locality: Ngemelis Island, Great Wall On West Side, Palau, North Pacific Ocean
Depth (m): 305 to 305
  • Paratype: Saunders, W. B. 1981. Veliger. 24(1): 1-7.; Saunders, W. B. 1981. The Veliger. 24(1): 1-7.
Creative Commons Attribution 3.0 (CC BY 3.0)

© Smithsonian Institution, National Museum of Natural History, Department of Invertebrate Zoology

Source: National Museum of Natural History Collections

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Paratype for Nautilus belauensis Saunders, 1981
Catalog Number: USNM 730676
Collection: Smithsonian Institution, National Museum of Natural History, Department of Invertebrate Zoology
Sex/Stage: female;
Preparation: Dry
Collector(s): W. Saunders
Year Collected: 1976
Locality: Augupelu Reef, Mutremdiu Point, Palau, North Pacific Ocean
Depth (m): 183 to 183
  • Paratype: Saunders, W. B. 1981. Veliger. 24(1): 1-7.; Saunders, W. B. 1981. The Veliger. 24(1): 1-7.
Creative Commons Attribution 3.0 (CC BY 3.0)

© 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 5 specimens in 1 taxon.
Water temperature and chemistry ranges based on 5 samples.

Environmental ranges
  Depth range (m): 183 - 305
  Temperature range (°C): 9.138 - 12.266
  Nitrate (umol/L): 20.290 - 30.508
  Salinity (PPS): 34.531 - 34.533
  Oxygen (ml/l): 1.675 - 2.513
  Phosphate (umol/l): 1.668 - 2.286
  Silicate (umol/l): 25.068 - 38.274

Graphical representation

Depth range (m): 183 - 305

Temperature range (°C): 9.138 - 12.266

Nitrate (umol/L): 20.290 - 30.508

Salinity (PPS): 34.531 - 34.533

Oxygen (ml/l): 1.675 - 2.513

Phosphate (umol/l): 1.668 - 2.286

Silicate (umol/l): 25.068 - 38.274
 
Note: this information has not been validated. Check this *note*. Your feedback is most welcome.

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Wikipedia

Nautilus belauensis

Nautilus belauensis, also known as the Palau nautilus, is a species of nautilus native to the waters around the Pacific island nation of Palau.[1] N. belauensis is very similar to Nautilus pompilius and shares with this species a closed umbilicus covered with a callus. It differs on the basis of a modified radula and fine raised ridges across and along the shell, which form a cross-grid texture. N. belauensis is the second-largest nautilus after the giant form of N. pompilius pompilius. The shell is usually up to around 210 mm in diameter, although specimens up to 226 mm have been recorded.[2]

References

  1. ^ Saunders, W.B. 1981. A new species of Nautilus from Palau. Veliger 24(1): 1–7.
  2. ^ Jereb, P. 2005. Family Nautilidae. In: P. Jereb & C.F.E. Roper, eds. Cephalopods of the world. An annotated and Illustrated catalogue of species known to date. Volume 1. Chambered nautiluses and sepioids (Nautilidae, Sepiidae, Sepiolidae, Sepiadariidae, Idiosepiidae and Spirulidae). FAO Species Catalogue for Fishery Purposes. No. 4, Vol. 1. Rome, FAO. pp. 51–55.
  • Norman, M. 2000. Cephalopods: A World Guide. Hackenheim, ConchBooks, p. 22.
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