Strombus alatus
A warm-water conch with a winged shell, found from North Carolina to Mexico.
The Florida fighting conch, *Strombus alatus*, is a medium-sized marine snail that lives in warm waters. It belongs to the family Strombidae, the group known as true conches. Its scientific name comes from two Latin words: *Strombus*, which means a snail with a spiral shell (itself from the Greek *στρόμβος*, referring to something twisted or spun, like a top or, in Aristotle’s writings, a sea snail), and *alatus*, meaning “winged.”
This species is found in the western Atlantic Ocean, ranging from North Carolina down to Florida, across the Gulf of Mexico to Louisiana, Texas, and along Mexico’s eastern coast. Its shell can reach up to 112 mm in length.
*Strombus alatus* closely resembles *Strombus pugilis*, the West Indian fighting conch, which lives farther south. The shells of *S. alatus* have less prominent spines just below the whorls and a slightly more extended outer lip. Scientists have disagreed on whether these are separate species or just subspecies. In a 2005 study of the Stromboidea, Simone provisionally treated them as distinct species but noted that no major morphological differences were found, and all variations—including those in the genital system—could be seen as extremes within a single, widespread, variable species.
A 2006 phylogenetic analysis by Latiolais and colleagues, based on nuclear histone H3 and mitochondrial cytochrome-c oxidase I genes, placed *S. alatus* within a cladogram of 32 species from the genera *Strombus* and *Lambis*.
This conch lives from the surface down to a maximum depth of 183 meters.
Quick Facts
- Genus
- Strombus
- Species
- alatus
Facts from the source article.
Lore & Background
The shell of Strombus alatus can reach up to 112 mm in length. This species is closely similar to Strombus pugilis, the West Indian fighting conch, which has a more southerly range. S. alatus shells have less prominent subsutural spines and slightly more projected outer lips. Some scientists have treated the two as distinct species; others as subspecies. In an extensive study of the Stromboidea in 2005, Simone provisionally treated these as distinct species, but observed that no spectacular morphological difference was found and that all related differences, even those of the genital system, can be regarded as extreme of variation of a single, wide distributed, variable species.
Reader's Guide
Strombus alatus occupies a notable position within the genus Strombus due to its close relationship with Strombus pugilis and the ongoing taxonomic debate surrounding their separation. The species is part of a broader phylogenetic context; a cladogram based on sequences of nuclear histone H3 gene and mitochondrial cytochrome-c oxidase I (COI) gene, proposed by Latiolais et al. (2006), shows the phylogenetic relationships of 32 analyzed species in the genera Strombus and Lambis, including S. alatus. Its distribution along the western Atlantic from North Carolina to the Gulf of Mexico and Mexico places it in warm, shallow waters, with a recorded depth range from the surface down to 183 m. The species' name, meaning 'winged', reflects its shell morphology, and its common name 'fighting conch' is shared with its southern relative. The taxonomic uncertainty—whether S. alatus and S. pugilis are distinct species or extremes of a single variable species—underscores the complexity of strombid systematics and the need for further study.
Did You Know?
- The name Strombus alatus derives from Latin: Strombus means a snail with a spiral shell, and alatus means 'winged'.
- The shell can be as large as 112 mm.
- This species occurs from North Carolina to Florida, the Gulf of Mexico, Louisiana, Texas, and the east coast of Mexico.
- Some scientists treat Strombus alatus and Strombus pugilis as distinct species; others treat them as subspecies.
More in Marine Snails: Ceriths, Nassas and Conchs, Part 2 1-24
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