Overview

Brief Summary

Biology

Type of larval development: planktotrophic, with long-lived (teleplanic) pelagic larvae
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Distribution

Eastern Atlantic, from the English Channel to Morocco and in scattered occurrences as far south as Angola; Canary Islands, Madeira and the Azores; Seine, Josephine and Ampère seamounts; Mediterranean only in the Western Basin. Western Atlantic, on the Brazilian coast. Other populations, which may be recognized as distinct subspecies, are found in Australia, Taiwan and Japan.
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Physical Description

Diagnostic Description

Diagnosis

Shell large, up to 400 mm on mainland locations, to 200 mm in island and seamount sites. Protoconch multispiral, normally eroded except on very juvenile specimens. Teleoconch of 8-9 whorls with a moderately high, conical spire and convex whorls, the last one ample and making up slightly more than two-thirds of the total height. Spire whorls vaguely shouldered, with very flat spiral cords separated by poorly defined, rather narrow interspaces, the shoulder covered by a much broader and flatter cord and commonly, but not always, bearing a spiral series of knobs, paralelled to the abapical side by lesser flat cords with or without spiral rows of knobs. Aperture large, oval in shape, with an elaborate peristome; outer lip flaring, thickened at a short distance from the edge and with internal denticles; inner part of the peristome with an appressed parietal callus continued into a foliated columellar callus, which has a raised edge overhanging the siphonal canal on large specimens, and bears indistinct ridges towards the edge. Colour pattern very characteristic, with articulated spiral bands of light patches on the knobs and dark brown in the interspaces, alternating with medium brown uniform bands. Peristome white with dark brown denticles on the outer lip and a brownish to reddish hue on the edge of columellar callus.
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Type Information

Holotype for Nyctilochus alfredensis Bartsch, 1915
Catalog Number: USNM 186785
Collection: Smithsonian Institution, National Museum of Natural History, Department of Invertebrate Zoology
Preparation: Dry
Collector(s): W. Turton
Locality: Port Alfred, South Africa
  • Holotype: 1915. Bull. U.S. Nat. Mus. 91: p. 94, pl. 4, fig. 4.
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Ecology

Habitat

Known from seamounts and knolls
  • Stocks, K. 2009. Seamounts Online: an online information system for seamount biology. Version 2009-1. World Wide Web electronic publication.
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Depth range based on 29 specimens in 2 taxa.
Water temperature and chemistry ranges based on 22 samples.

Environmental ranges
  Depth range (m): 30 - 409
  Temperature range (°C): 13.402 - 20.637
  Nitrate (umol/L): 1.033 - 10.045
  Salinity (PPS): 35.210 - 36.318
  Oxygen (ml/l): 4.161 - 5.477
  Phosphate (umol/l): 0.106 - 0.816
  Silicate (umol/l): 0.940 - 6.018

Graphical representation

Depth range (m): 30 - 409

Temperature range (°C): 13.402 - 20.637

Nitrate (umol/L): 1.033 - 10.045

Salinity (PPS): 35.210 - 36.318

Oxygen (ml/l): 4.161 - 5.477

Phosphate (umol/l): 0.106 - 0.816

Silicate (umol/l): 0.940 - 6.018
 
Note: this information has not been validated. Check this *note*. Your feedback is most welcome.

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Wikipedia

Ranella lampas


Ranella lampas is a species of predatory sea snail, a marine gastropod mollusk in the family Ranellidae, the triton snails, triton shells or tritons.[1]

Contents

Description

Distribution

References

  1. ^ Ranella lampas (Linnaeus, 1758). WoRMS (2009). Ranella lampas (Linnaeus, 1758). Accessed through the World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=216988 on 27 June 2010.
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Charonia lampas

Charonia lampas is a species of predatory sea snail, a marine gastropod mollusk in the family Ranellidae, the triton snails, triton shells or tritons.[2]

Contents

Distribution

Description

The maximum recorded shell length is 390 mm.[3]

Habitat

Minimum recorded depth is 8 m.[3] Maximum recorded depth is 50 m.[3]

References

  1. ^ Linnaeus C. (1758). Systema naturae per regna tria naturae, secundum classes ordines, genera, species, cum characteribus, differentiis, synonymis, locis. Tomus I. Editio Decima. Reformata. Holmiae, Impensis Direct. Stockholm: Laurentii Salvii. iv + 824 pp.
  2. ^ a b Charonia lampas (Linnaeus, 1758). Gofas, S. (2009). Charonia lampas (Linnaeus, 1758). In: Bouchet, P.; Gofas, S.; Rosenberg, G. (2009) World Marine Mollusca database. Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=141101 on 27 June 2010.
  3. ^ a b c Welch J. J. (2010). "The "Island Rule" and Deep-Sea Gastropods: Re-Examining the Evidence". PLoS ONE 5(1): e8776. doi:10.1371/journal.pone.0008776.
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