Conus muriculatus
| Conus muriculatus | ||||||||||||
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Housing of Conus muriculatus |
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| Scientific name | ||||||||||||
| Conus muriculatus | ||||||||||||
| GB Sowerby I , 1833 |
Conus muriculatus is the species name of a screw from the family of the cone snails (genus Conus ), which in Indopazifik is used and from Vielborstern fed. According to Alan J. Kohn, Conus sugillatus is a form of this species.
features
Conus muriculatus carries a small to moderately small, moderately firm to firm snail shell , which in adult snails reaches 2.3 to 3 cm in length. The circumference of the body is conical, the outline alternatingly convex towards the shoulder and straight towards the base. The shoulder is angled and smooth to heavily covered with tubercles. The thread is low to medium high, its outline slightly concave to slightly convex. The Protoconch has about three and a half whorls and measures a maximum of 0.7 to 0.8 mm. The first whorls of the Teleoconch are smooth, the later ones smooth, wavy or covered with tubercles. The seam ramps of the Teleoconch are flat to slightly concave with 1 to 3 to 4 increasing spiral grooves. The circumference of the body is covered with smooth, spiral ribs at the base to heavily grained ribs over the entire surface.
The basic color of the housing is white to grayish-white and often underlaid with bluish shadows. The perimeter of the body typically has an alternatingly wide, yellowish-brown, sometimes olive-colored spiral band on either side of the middle, which can be clearly pronounced or even obsolete. From the base to the shoulder, dashed and dotted or continuous brown, spiraling lines extend in varying numbers and arrangements. The base, siphonal fasciole, and basal portion of the spindle are dark bluish or brownish-purple in color. The circumferences of the Protoconch are orange, the seam ramps of the Teleoconche are covered with sparse or numerous brown radial markings, but sometimes without drawing. The case mouth is purple at the base, otherwise unspotted, but the outside pattern can shine through on the inside.
The thin, somewhat translucent periostracum is yellowish-brown and covered with spiral rows of tufts at wide intervals around the body.
The top of the foot is typically pink with white and black dots, red at the ends, and the rim with radial black dotted lines. The sole of the foot, the rostrum, the feelers and the sipho are red with white and black dots, the sipho also in the middle with an additional pale gray band.
distribution and habitat
Conus muriculatus is distributed in the Indo-Pacific from Madagascar and Réunion to the west coast of Australia and from Japan to New Caledonia , Fiji and French Polynesia . It lives in the intertidal zone and up to a depth of about 70 m on coarse sand with algae and on various surfaces of reefs. In some places it only occurs below the intertidal zone, for example in New Caledonia from 12 to 40 m and the Marshall Islands to a depth of 70 m.
Development cycle
Like all cone snails, Conus muriculatus is sexually separate and the male mates with the female with his penis . In Broadhurst Reef off Townsville (Queensland), females laid their eggs under coral rubble at a depth of 10 m. Egg capsules were placed in groups of four in the aquarium. The eggs in the egg capsules develop into Veliger larvae, which after a free-swimming phase sink down as plankton-eating zooplankton and metamorphose into crawling snails .
nutrition
The prey of Conus muriculatus consists of poly-bristles , which it pricks with its radula teeth and immobilizes with the help of the poison from its poison gland . Most of the prey animals come from the families Eunicidae and Nereididae .
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] muriculatus Sowb., P. 26.
- Jerry G. Walls: Cone Shells: A Synopsis of the Living Conidae. TFH Publications, Neptune (New Jersey) 1979. p. 747.
- 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).
Web links
- The Conus Biodiversity website: Conus muriculatus Sowerby ii, 1833
- Underwater Kwajalein: Conus sugillatus Reeve, 1844
Individual evidence
- ^ Alan Kohn, in: Claus Nielsen (2013): Life cycle evolution: was the eumetazoan ancestor a holopelagic, planktotrophic gastraea? . BMC Evolutionary Biology 13, Art. 171, p. 9. Figure 8. The occurrence of “direct” development in the gastropod genus Conus. Conus muriculatus : planktonic larvae, planktotrophic.