| 词条 | Hexaplex nigritus |
| 释义 |
| name = Hexaplex nigritus (Black Murex Shell) | image = Muricanthus nigritus.jpg | image_caption = Shell of Hexaplex nigritus (Philippi, 1845), and operculum measuring 78.7 mm in height, from Concepcion Bay, in Mexico. | regnum = Animalia | phylum = Mollusca | classis = Gastropoda | unranked_superfamilia = clade Caenogastropoda clade Hypsogastropoda clade Neogastropoda | superfamilia = Muricoidea | familia = Muricidae | subfamilia = Muricinae | genus = Hexaplex | subgenus = | species = H. nigritus | binomial = Hexaplex nigritus | binomial_authority = (Philippi, 1845) | synonyms_ref = [1] | synonyms =
}}Hexaplex nigritus, the Northern Radix or Black-and-White Murex or Black Murex, is a species of sea snail, a marine gastropod mollusc in the family Muricidae, the murex snails or rock snails. It is commonly known as the black murex shell.[1] DistributionThe black murex shell is commonly found in the Gulf of California (Sea of Cortez), in the Western Mexico.[3] HabitatThese sea snails can be found in the intertidal and subtidal waters, with sand and gravel substrate, at depths up to 60 m.[2] DescriptionShells of Hexaplex nigritus can reach a length of {{convert|75|-|200|mm}}.[3] These large shells are black and white with black or dark brown stripes. The shell surface bears short spikes around the body whorl and spire. The aperture is porcelaneous white. This species is quite similar to Hexaplex radix. The shells of these two species mainly differ in the length, width and in the proportion of black versus white. Moreover, shells of H. nigritus are more oblong and show more spines in black.[4] BiologyThese sea snails feed primarily on clams. References1. ^1 {{WRMS species|596190 |Hexaplex nigritus (Philippi, 1845)||3 March 2012}} 2. ^R. Cudney-Bueno and K. Rowell [THE BLACK MUREX SNAIL, HEXAPLEXNIGRITUS (MOLLUSCA, MURICIDAE), IN THE GULFOF CALIFORNIA, MEXICO: II. GROWTH, LONGEVITY, AND MORPHOLOGICAL VARIATIONS WITH IMPLICATIONS FOR MANAGEMENT OF A RAPIDLY DECLINING FISHERY] 3. ^1 {{Gastropods.com|key=6|id=976|title=Hexaplex (Muricanthus) nigritus|access-date=12 January 2019}} 4. ^Whatsup San Carlos Bibliography
2 : Muricidae|Gastropods described in 1845 |
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