Surat cone snail
| Surat cone snail | ||||||||||||
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Housing of Conus suratensis |
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| Systematics | ||||||||||||
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| Scientific name | ||||||||||||
| Conus suratensis | ||||||||||||
| Hwass in Bruguière , 1792 |
The Surat cone snail or the surat cone ( Conus suratensis ) is a snail from the cone snail family (genus Conus ) that is distributed in the Indo-Pacific from India to Australia .
features
Conus suratensis carries a large and heavy snail shell , which in adult snails reaches 8 to 16 cm in length. The circumference of the body is usually bulbous, conical, the outline in the third towards the apex is convex and more straight towards the base. The shoulder is almost angled or rounded. The thread is low, its contour is alternately concave. The Protoconch is multi-threaded and measures a maximum of 0.8 to 0.9 mm. The seam ramps of the Teleoconch are flat to slightly concave with a few spiral grooves that merge into spiral stripes at the later circumferences. The periphery of the body is covered in the third at the base with clear or weak spiral grooves, around which bands of varying widths run.
The base color of the case is cream to dark yellow and alternating orange-brown. The circumference of the body has spiral rows of brown dots, spots, lines or narrow bars, usually also arranged in axial rows. Sometimes dark markings alternate with white lines. Occasionally, narrow orange-brown bands encircle the body at various points. The base, siphonal fasciole, and basal portion of the spindle are pale orange and often without spots. The late seam ramps are drawn radially or irregularly with brown stripes and a few spots. The inside of the case mouth is orange or pale brown in almost adults and white in adults.
distribution and habitat
Conus suratensis is distributed in the Indo-Pacific from India and Sri Lanka to Queensland ( Australia ) and Papua New Guinea , to the Solomon Islands and the Philippines , but probably also around Madagascar . It lives in water depths just below the intertidal zone. The name of this cone snail is derived from the Indian city of Surat , on the coast of which the snail occurs.
Development cycle
Like all cone snails, Conus suratensis is sexually separate and the male mates with his penis . The female lays egg capsules, which contain numerous eggs. In Philippine waters, these eggs have a diameter of around 207 µm, from which it is concluded that the Veliger larvae swim freely for at least 23 days before they sink down and metamorphose into crawling snails .
nutrition
The feeding behavior and prey range of Conus suratensis have not been investigated. Other cone snails of the subgenus Dendroconus with similarly shaped poisonous teeth such as the birch cone eat many bristles .
literature
- George Washington Tryon: Manual of Conchology, structural and systematic, with illustrations of the species , vol. VI; Academy of Natural Sciences, Philadelphia 1884. C [onus] betulinus Linn., Var. Suratensis Hwass., P. 16.
- Dieter Röckel, Werner Korn, Alan J. Kohn: Manual of the Living Conidae Vol. 1: Indo-Pacific Region . Verlag Christa Hemmen, Wiesbaden 1995. The texts on the individual cone snail species of the Indo-Pacific are published on The Conus Biodiversity website with the permission of the authors (see web links).
