''Canarium scalariforme'' is a

species In biology, a species is the basic unit of classification and a taxonomic rank of an organism, as well as a unit of biodiversity. A species is often defined as the largest group of organisms in which any two individuals of the appropriate s ...

sea snail Sea snail is a common name for slow-moving marine gastropod molluscs, usually with visible external shells, such as whelk or abalone. They share the taxonomic class Gastropoda with slugs, which are distinguished from snails primarily by the ...

, a

marine Marine is an adjective meaning of or pertaining to the sea or ocean. Marine or marines may refer to: Ocean * Maritime (disambiguation) * Marine art * Marine biology * Marine debris * Marine habitats * Marine life * Marine pollution Military * ...

gastropod The gastropods (), commonly known as snails and slugs, belong to a large taxonomic class of invertebrates within the phylum Mollusca called Gastropoda (). This class comprises snails and slugs from saltwater, from freshwater, and from land. T ...

mollusk Mollusca is the second-largest phylum of invertebrate animals after the Arthropoda, the members of which are known as molluscs or mollusks (). Around 85,000 extant species of molluscs are recognized. The number of fossil species is e ...

in the

family Family (from la, familia) is a Social group, group of people related either by consanguinity (by recognized birth) or Affinity (law), affinity (by marriage or other relationship). The purpose of the family is to maintain the well-being of its ...

Strombidae, the true conchs.MolluscaBase (2018). Canarium scalariforme (Duclos, 1833). Accessed through: World Register of Marine Species at: http://www.marinespecies.org/aphia.php?p=taxdetails&id=863110 on 2018-10-09}

Description

Distribution

This species occurs in the Indian Ocean off the Mascarene Basin.

Phylogeny

In 2006, Latiolais and colleagues proposed a cladogram (a

tree of descent The tree of life or universal tree of life is a metaphor, model and research tool used to explore the evolution of life and describe the relationships between organisms, both living and extinct, as described in a famous passage in Charles Dar ...

) that attempts to show the

phylogenetic In biology, phylogenetics (; from Greek φυλή/ φῦλον [] "tribe, clan, race", and wikt:γενετικός, γενετικός [] "origin, source, birth") is the study of the evolutionary history and relationships among or within groups o ...

relationships of 34 species within the family Strombidae. The authors analysed 31 species in the genus '' Strombus'' including ''Canarium haemastoma'' (referred to as ''Strombus haemastoma'' in their analysis), and three species in the allied genus ''

Lambis ''Lambis'' is a genus of large sea snails sometimes known as spider conchs, marine gastropod mollusks in the family Strombidae, the true conch family.Bouchet, P.; Rosenberg, G. (2011)Lambis Röding, 1798 Accessed through: World Register of Ma ...

''. The cladogram was based on DNA sequences of both nuclear

histone H3 Histone H3 is one of the five main histones involved in the structure of chromatin in eukaryotic cells. Featuring a main globular domain and a long N-terminal tail, H3 is involved with the structure of the nucleosomes of the 'beads on a stri ...

and mitochondrial cytochrome-c oxidase I (COI) protein-coding

gene In biology, the word gene (from , ; "...Wilhelm Johannsen coined the word gene to describe the Mendelian units of heredity..." meaning ''generation'' or ''birth'' or ''gender'') can have several different meanings. The Mendelian gene is a ba ...

regions. In this proposed phylogeny, ''Strombus labiatus'' (= ''

Canarium labiatum ''Canarium labiatum'', common name the Samar Conch, is a species of sea snail, a marine gastropod mollusk in the family Strombidae, the true conchs. Description The shell size varies between 20 mm and 50 mm. Distribution This specie ...

'') and ''Strombus microurceus'' are closely related and appear to share a common ancestor.

References

* Duclos, P.L. (1833). Strombe. Strombus. Lamarck. Magasin de Zoologie. 3: pl. 28 * Walls, J.G. (1980). ''Conchs, tibias and harps. A survey of the molluscan families Strombidae and Harpidae''. T.F.H. Publications Ltd, Hong Kong * Kronenberg, G. C. (2015). ''A note on Strombus scalariformis (Caenogastropoda, Strombidae)''. Basteria 79: 32-38

External links

Sowerby, G. B., II. (1842-1887). Thesaurus Conchyliorum: Or monographs of genera of shells. London, privately published: vol. 1: p. 1-438, pl. 1-91 [cover date 1847
vol. 2: p. 439 899, pl. 92-186 [cover date 1855]; vol. 3: p. 1-331, pl. 187-290 [cover date: 1866]; vol. 4 p. 1-110, pl. 292-423 [cover date 1880]; vol. 5: p. 1-305, pl. 424-517] Strombidae Gastropods described in 1842 {{Strombidae-stub