Lobatus raninus

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Hawk-wing conch
Lobatus raninus 01.JPG
Five views of a shell of Lobatus raninus(Gmelin, 1791)
Scientific classification OOjs UI icon edit-ltr.svg
Domain: Eukaryota
Kingdom: Animalia
Phylum: Mollusca
Class: Gastropoda
Subclass: Caenogastropoda
Order: Littorinimorpha
Family: Strombidae
Genus: Lobatus
Species:
L. raninus
Binomial name
Lobatus raninus
(Gmelin, 1791)
Synonyms [1]
List of synonyms
  • Strombus bituberculatus Lamarck, 1822
  • Strombus costosomuricatusMörch, 1852
  • Strombus fetusJung & Heitz, 2001
  • Strombus lobatusSwainson, 1823
  • Strombus praeraninusKronenberg & Dekker, 2000 (Unnecessary new name for S. wilsonorum Petuch, 1994)
  • Strombus quadratusPerry, 1811
  • Strombus raninus Gmelin, 1791 (basionym)
  • Strombus raninus nanusBales, 1942
  • Strombus sulcatusFischer von Waldheim, 1807
  • Strombus wilsonorumPetuch, 1994
  • Tricornis raninus(Gmelin, 1791)

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. [1]

Contents

Shell description

A drawing depicting the shell of Lobatus raninus from Index Testarum Conchyliorum (1742). Strombus-raninus-001.jpg
A drawing depicting the shell of Lobatus raninus from Index Testarum Conchyliorum (1742).

The maximum recorded shell length is 121 mm [2] or up to 130 mm. [3] Like other species in the same genus, Lobatus raninus has a robust, somewhat heavy and solid shell, with a distinct stromboid notch. The body whorl is dorsally ornamented by characteristic coarse spiral ridges. [3] The posterior expansion of the flaring outer lip is always lower than the spire. [3] The color is brownish, with several disperse white spots. Both inner and outer lips are cream or white. [3]

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) [4]
 

Strombus gallus

Strombus gigas

Strombus costatus

Strombus raninus

Strombus peruvianus

Strombus galeatus

Strombus latus

Strombus pugilis

Strombus alatus

Strombus gracilior

Strombus granulatus

Phylogeny and relationships of Eastern Pacific and Atlantic Strombus species, according to Latiolais and colleagues (2006) [5]

The phylogenetic relationships among the Strombidae have been mainly accessed on two occasions, using two methods. In 2005, Simone proposed a cladogram (a tree of descent) based on an extensive morpho-anatomical analysis of representatives of Aporrhaidae, Strombidae, Xenophoridae and Struthiolariidae, including L. raninus (there referred to as Tricornis raninus). [4]

With the exception of Lambis and Terebellum , the remaining taxa were previously allocated within the genus Strombus . However, according to Simone, only Strombus gracilior , Strombus alatus and Strombus pugilis , the type species, remained within Strombus, as they 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). [4] The remaining taxa were previously considered as subgenera, and were elevated to genus level by Simone in the end of his analysis. The genus Tricornis (now considered a synonym of Lobatus ), [1] in this case, only included T. raninus (now considered a synonym of Lobatus raninus). [1] [4]

A different approach, this time based on sequences of nuclear histone H3 and mitochondrial cytochrome-c oxidase I (COI) genes was proposed by Latiolais et al. (2006). The phylogenic relations of (32 analyzed) species that used to belong or still belong in the genus Strombus and Lambis are shown below: [5]

Distribution

This species is distributed in the Caribbean Sea, the Gulf of Mexico and the Lesser Antilles.

Ecology

Habitat

S. raninus lives near seagrass beds, usually in shallow water. [3] The minimum recorded depth is 0.3 m; the maximum recorded depth is 55 m. [2]

Feeding

Like other species of the genus Strombus , S. raninus is known to be a herbivore.

Related Research Articles

<span class="mw-page-title-main">Strombidae</span> 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, and the Epifamily Neostromboidae. The term true conchs, being a common name, does not have an exact meaning. It may generally refer to any of the Strombidae but sometimes is used more specifically to include only Strombus and Lambis. The family currently includes 26 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, Aliger 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.

<span class="mw-page-title-main">Stromboidea</span> 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>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. Its name derives two Latin words. Strombus means, in Latin, a snail with spiral shell, which derives from the Greek στρόμβος, meaning anything turned or spun around, like a top or, as in Aristotle's Historia Animalium, a sea snail. Alatus means, in Latin, "winged".

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

Conomurex luhuanus, commonly known as the 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>Titanostrombus goliath</i> Species of gastropod

Titanostrombus goliath, previously known as Lobatus 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. T. 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. Some phylogenetic hypotheses consider T. goliath as closely related to the queen conch, Aliger 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.

<i>Sinustrombus sinuatus</i> Species of sea snail

Sinustrombus sinuatus, common name the laciniate conch, is a species of sea snail, a marine gastropod mollusc in the true conch family, Strombidae. It is native to the tropical Indo-Pacific region.

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

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

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

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.

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. 1 2 3 4 Bouchet, P. (2010). Lobatus raninus (Gmelin, 1791). Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=531851 on 2011-03-21
  2. 1 2 Welch, J.J. (2010). "The "Island Rule" and Deep-Sea Gastropods: Re-Examining the Evidence". PLoS ONE 5(1): e8776. doi : 10.1371/journal.pone.0008776.
  3. 1 2 3 4 5 Cervigón, F. et al. (1993). "FAO species identification sheets for fishery purposes. Field guide to the commercial marine and brackish-water resources of the northern coast of South America". Rome, FAO. 513 p.
  4. 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. doi: 10.11606/issn.2176-7793.v37i2p141-267 . ISSN   0066-7870. Archived from the original (PDF) on 2012-03-05.
  5. 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.