Strombus gracilior

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Strombus gracilior
Temporal range: Pleistocene–Recent
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Strombus gracilior Sowerby, 1825 (4228411590).jpg
Apertural view of a shell of the Eastern Pacific fighting conch, Strombus gracilior
Scientific classification Red Pencil Icon.png
Kingdom: Animalia
Phylum: Mollusca
Class: Gastropoda
Subclass: Caenogastropoda
Order: Littorinimorpha
Family: Strombidae
Genus: Strombus
Species:
S. gracilior
Binomial name
Strombus gracilior
Sowerby I, 1925

Strombus gracilior, common names the Eastern Pacific fighting conch, or the Panama fighting conch, is a species of medium to large sea snail, a marine gastropod mollusk in the family Strombidae, the true conchs. [1]

Contents

Description

The length of the shell varies between 40 mm and 95 mm, the width may attain 50 mm. The high spire is covered with subsutural spines or pointed nodes on the shoulder of the whorls. The color of the shell is yellowish to yellowish-brown, interrupted in the middle with a lighter band. The aperture and the large outer lip is white bordered with orange-brown. The shell is covered with a thin, horn-covered periostracum.

The fighting conch ( Strombus pugilis ) from the Caribbean Sea and the Gulf of Mexico is a similar species in the sculpture of the shell and in inner morphological characters. [2]

Phylogeny

Strombidae

Terebellum terebellum

Canarium urceus

Conomurex luhuanus

Tricornis raninus

Lambis lambis

Strombus

Eustrombus

Aliger

A simplified version of the phylogeny and relationships of Strombidae according to Simone (2005) [2]
 

Strombus gallus

Strombus gigas

Strombus costatus

Strombus raninus

Strombus peruvianus

Strombus galeus

Strombus latus

Strombus pugilis

Strombus alatus

Strombus gracilior

Strombus granulatus

Phylogeny and relationships of Eastern Pacific and Atlantic Strombus species, according to Latiolais et al. (2006) [3]

The phylogenetic relationships among the Strombidae have been mainly accessed on two occasions, using two distinct methods. In a 2005 monography, Simone proposed a cladogram (a tree of descent) based on an extensive morpho-anatomical analysis of representatives of Aporrhaidae, Strombidae, Xenophoridae and Struthiolariidae. [2] However, according to Simone, only Strombus gracilior, Strombus alatus and Strombus pugilis , the type species, remained within Strombus. In Simone's cladogram, these three species constituted a distinct group based on at least five synapomorphies (traits that are shared by two or more taxa and their most recent common ancestor). The remaining taxa were previously considered as subgenera, and were elevated to genus level by Simone in the end of his analysis. [2]

In a different approach, Latiolais and colleagues (2006) proposed another cladogram that attempts to show the phylogenetic relationships of 34 species within the family Strombidae. The authors analysed 31 species in the genus Strombus and three species in the allied genus Lambis. The cladogram was based on DNA sequences of both nuclear histone H3 and mitochondrial cytochrome-c oxidase I protein-coding gene regions. In this proposed phylogeny, Strombus pugilis, Strombus alatus, Strombus granulatus and Strombus gracilior are closely related and appear to share a common ancestor. [3]

Distribution

This species is can be found on sandflats and lagoons and offshore to 45 m in the Gulf of California along West Mexico and in the Pacific Ocean along Northern Peru.

Related Research Articles

Strombidae Family of molluscs

Strombidae, commonly known as the true conchs, is a taxonomic family of medium-sized to very large sea snails in the superfamily Stromboidea. The term true conchs, being a common name, does not have an exact meaning. It may refer generally to any of the Strombidae but sometimes is used more specifically to include only Strombus and Lambis. The family currently includes 23 extant, and 10 extinct genera.

<i>Aliger gigas</i> Species of mollusc

Aliger gigas, originally known as Strombus gigas or more recently as Lobatus gigas, commonly known as the queen conch, is a species of large sea snail, a marine gastropod mollusc in the family of true conches, the Strombidae. This species is one of the largest molluscs native to the Caribbean Sea, and tropical northwestern Atlantic, from Bermuda to Brazil, reaching up to 35.2 centimetres (13.9 in) in shell length. A. gigas is closely related to the goliath conch, Lobatus goliath, a species endemic to Brazil, as well as the rooster conch, Lobatus gallus.

<i>Strombus</i> Genus of gastropods

Strombus is a genus of medium to large sea snails, marine gastropod molluscs in the family Strombidae, which comprises the true conchs and their immediate relatives. The genus Strombus was named by Swedish Naturalist Carl Linnaeus in 1758. Around 50 living species were recognized, which vary in size from fairly small to very large. Six species live in the greater Caribbean region, including the queen conch, Strombus gigas, and the West Indian fighting conch, Strombus pugilis. However, since 2006, many species have been assigned to discrete genera. These new genera are, however, not yet found in most textbooks and collector's guides.

Stromboidea Superfamily of gastropods

The Stromboidea, originally named the Strombacea by Rafinesque in 1815, is a superfamily of medium-sized to very large sea snails in the clade Littorinimorpha.

<i>Strombus pugilis</i> Species of gastropod

Strombus pugilis, common names the fighting conch and the West Indian fighting conch, is a species of medium to large sea snail, a marine gastropod mollusk in the family Strombidae, the true conchs.

<i>Laevistrombus canarium</i> Species of sea snail

Laevistrombus canarium is a species of edible sea snail, a marine gastropod mollusc in the family Strombidae. Known from illustrations in books dating from the late 17th century, L. canarium is an Indo-Pacific species occurring from India and Sri Lanka to Melanesia, Australia and southern Japan. The shell of adult individuals is coloured from light yellowish-brown to golden to grey. It has a characteristic inflated body whorl, a flared, thick outer lip, and a shallow stromboid notch. The shell is valued as an ornament, and because it is heavy and compact, it is also often used as a sinker for fishing nets.

<i>Lobatus raninus</i> Species of gastropod

Lobatus raninus, common name the hawk-wing conch, is a species of medium to large sea snail, a marine gastropod mollusk in the family Strombidae, the true conchs.

<i>Strombus alatus</i> Species of gastropod

Strombus alatus, the Florida fighting conch, is a species of medium-sized, warm-water sea snail, a marine gastropod mollusk in the family Strombidae, the true conchs.

<i>Conomurex luhuanus</i> Species of gastropod

Conomurex luhuanus, common name Strawberry conch or Tiger conch, is a species of medium-sized sea snail, a marine gastropod mollusk in the family Strombidae, the true conchs. C. luhuanus is found in sandy habitat among corals in the Indopacific region. They feed on algae or detritus, move with a modified foot, and have complex eyes compared to other gastropods.

<i>Lobatus goliath</i> Species of gastropod

Lobatus goliath, previously known as Eustrombus goliath and Strombus goliath, common name the goliath conch, is a species of very large edible sea snail, a marine gastropod mollusk in the family Strombidae, the true conchs. L. goliath is one of the largest mollusks of the Western Atlantic Ocean, and also one of the largest species among the Strombidae. It was once considered endemic to Brazil, but specimens have also been recently found in the waters of Barbados. Brazilian common names for this species include búzio de chapéu or búzio, and búzio de aba or buzo in. L. goliath is considered closely related to the queen conch, Lobatus gigas.

<i>Aliger gallus</i> Species of gastropod

Aliger gallus, previously known as Strombus gallus, common name the rooster conch or rooster-tail conch, is a species of medium-sized sea snail, a marine gastropod mollusk in the family Strombidae, the true conchs.

<i>Labiostrombus epidromis</i> Species of gastropod

Labiostrombus epidromis, common name the swan conch, is a species of sea snail, a marine gastropod mollusk in the family Strombidae, the true conchs.

Canarium fusiforme is a species of sea snail, a marine gastropod mollusk in the family Strombidae, the true conchs.

<i>Canarium scalariforme</i> Species of gastropod

Canarium scalariforme is a species of sea snail, a marine gastropod mollusk in the family Strombidae, the true conchs.

<i>Canarium labiatum</i> Species of gastropod

Canarium labiatum, common name the Samar Conch, is a species of sea snail, a marine gastropod mollusk in the family Strombidae, the true conchs.

<i>Canarium mutabile</i> Species of gastropod

Canarium mutabile, common name the variable stromb, is a species of sea snail, a marine gastropod mollusk in the family Strombidae, the true conchs.

Terebellum terebellum, common name the Terebellum conch, is a species of sea snail, a marine gastropod mollusk in the family Seraphsidae, the true conchs.

<i>Doxander vittatus</i> Species of gastropod

Doxander vittatus, common name the vitate conch, is a species of medium-sized sea snail, a marine gastropod mollusk in the family Strombidae, the true conchs.

Canarium microurceus is a species of sea snail, a marine gastropod mollusk in the family Strombidae, the true conchs.

<i>Titanostrombus galeatus</i> Species of gastropod

Titanostrombus galeatus, commonly known as the Eastern Pacific giant conch, is a species of large sea snail, a marine gastropod mollusk in the family Strombidae, the true conchs and their allies.

References

  1. Bouchet, P. (2011). Strombus gracilior G.B. Sowerby I, 1825. Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=564727 on 2011-03-29
  2. 1 2 3 4 Simone, L. R. L. (2005). "Comparative morphological study of representatives of the three families of Stromboidea and the Xenophoroidea (Mollusca, Caenogastropoda), with an assessment of their phylogeny" (PDF). Arquivos de Zoologia. São Paulo, Brazil: Museu de Zoologia da Universidade de São Paulo. 37 (2): 141–267. ISSN   0066-7870. Archived from the original (PDF) on 5 March 2012.
  3. 1 2 Latiolais, J. M.; Taylor M. S.; Roy, K.; Hellberg, M. E. (2006). "A molecular phylogenetic analysis of strombid gastropod morphological diversity". Molecular Phylogenetics and Evolution 41: 436-444.doi : 10.1016/j.ympev.2006.05.027.PDF.