Biology:Vetigastropoda
Vetigastropoda is a major taxonomic group of sea snails, marine gastropod mollusks that form a very ancient lineage. Taxonomically the Vetigastropoda are sometimes treated as an order, although they are treated as an unranked clade in Bouchet and Rocroi, 2005.
Vetigastropods are considered to be among the most primitive living gastropods,[1] and are widely distributed in all oceans of the world. Their habitats range from the deep sea to intertidal zones. Many have shells with slits or other secondary openings. One of their main characteristics is the presence of intersected crossed platy shell structure.[2] Most vetigastropods have some bilateral asymmetry of their organ systems.[3]
Description
Vetigastropods range in size from approximately 0.08 in (2 mm) long in the case of Scissurelloidea or Skeneoidea, to more than 11.8 in (300 mm) in length, as with the Haliotoidea. External colours and patterns are typically drab, but such groups as the Tricolioidea and some Trochoidea and Pleurotomarioidea have bright colours and glossy shells. The clade is characterized by having an intersected crossed platy shell structure.[2]
Shells range from elongate turret-shaped structures, to near-spherical. Shell sculpture varies greatly from simple concentric growth lines, which may or may not be barely visible on the shell surface, to heavy radial and axial ribbing. The shell aperture is normally oval, and often tangential to the coiling axis. Most species have an operculum (a small lid-like organ). Within the shell, Vetigastropods have a single pair of cephalic tentacles, and a distinct snout containing the mouth. The lateral sides of the body typically have sensory epipodial tentacles.[4]
Distribution
Habitat
Behaviour
Diet
Vetigastropods typically feed on such organisms as bryozoans, tunicates, and sponges. Several species such as Haliotoidea and Trochoidea have evolved to feed directly on such plant material as algae and marine angiosperms. Deep-sea vetigastropods typically consume sediment.[5]
Reproduction
Taxonomy
The Vetigastropoda have been referred to as a superorder as recently as at least 2007, by M. Harzhauser[6] and in 2005 by D. Heidelberger and L. Koch[7] following Ponder & Lindberg, 1997, although Bouchet & Rocroi, 2005 refer to this group simply as a clade, leaving taxonomic determination as a future option. The World Register of Marine Species (WoRMS) follows Bouchet & Rocroi regarding the taxonomic content of the Gastropoda but gives ranks to the higher taxa and defines Vetigastropoda as a subclass.[8]
Bouchet & Rocroi, 2005 treats the Vetigastropoda as a major clade and as a sister clade to the Caenogastropoda but includes the Vetigastropoda in what are referred to as Basal taxa that are certainly Gastropoda. Ponder & Lindberg, 1997 previously assigned the Vetigastropoda, as a superorder, to the Subclass Orthogastropoda. Phylogenetic analysis indicates that this taxon is one of the four natural groups within the Gastropoda: Vetigastropoda, Caenogastropoda, Patellogastropoda, and Heterobranchia. Research on the mitochondrial genome arrangement has shown that the Vetigastropoda (and Caenogastropoda) mostly retain the ancestral gene arrangement.[9]
In 2022 a new study showed, regardless of whether Vetigastropoda is monophyletic or not, its close affinity to Neomphaliones with high statistical support, thus favoring the concept of Vetigastropoda including Neomphalida and Cocculinida.[10]
Superfamilies
Superfamilies within the Vetigastropoda include:
- Not assigned to a superfamily within Vetigastropoda are:
- the families: Ataphridae Cossmann, 1915, Pendromidae Warén, 1991 (synonym: Trachysmatidae Thiele, 1925), † Schizogoniidae
- the genera: Sahlingia Warén & Bouchet, 2001
- Superfamily †Amberleyoidea
- Superfamily Angarioidea (created as a new superfamily by Williams et al. (2008).[11])
- Superfamily Cocculinoidea
- Superfamily †Eotomarioidea
- Superfamily Fissurelloidea Flemming, 1822 - keyhole limpets
- Superfamily Haliotoidea Rafinesque, 1815 - abalones[12]
- Superfamily Lepetelloidea
- Superfamily Lepetodriloidea McLean, 1988 - hydrothermal vent limpets
- Superfamily †Murchisonioidea
- Superfamily Neomphaloidea : belongs in its own independent clade, the Neomphalina, outside the Vetigastropoda [13]
- Superfamily Pleurotomarioidea Swainson, 1840 - slit snails: a sister clade to Neomphalina [13]
- Superfamily †Porcellioidea
- Superfamily Scissurelloidea
- Superfamily Seguenzioidea Verrill, 1884
- Superfamily Trochoidea Rafinesque, 1815 - top snails
- Superfamily Turbinoidea - turban snails - In 2008 this superfamily has been split into Trochoidea and Phasianelloidea
References
- ↑ Robertson, R. (2003). "The edible West Indian "whelk" Cittarium pica (Gastropoda: Trochidae): Natural history with new observations". Proceedings of the Academy of Natural Sciences of Philadelphia 153 (1): 27–47. doi:10.1635/0097-3157(2003)153[0027:TEWIWC2.0.CO;2]. http://direct.bl.uk/bld/PlaceOrder.do?UIN=144235586&ETOC=RN&from=searchengine. Retrieved 2010-01-26.
- ↑ 2.0 2.1 Hedegaard, C. (1997). "Shell structures of the recent Vetigastropoda". Journal of Molluscan Studies 63 (3): 369–377. doi:10.1093/mollus/63.3.369. ISSN 1464-3766.
- ↑ Salvini-Plawen, L.; Haszprunar, G. (1987). "The Vetigastropoda and the Systematics of Streptoneurous Gastropoda (Mollusca)". Journal of Zoology 211 (4): 747–770. doi:10.1111/j.1469-7998.1987.tb04485.x.
- ↑ Haszprunar, G. (1993). "Sententia: The Archaeogastropoda: A Clade, a Grade, or What Else?". American Malacological Union Bulletin 10: 165–177.
- ↑ Hickman, C. S. (1988). "Archaeogastropod Evolution, Phylogeny and Systematics: A Re-Evaluation". Malacological Review Supplement 4: 17–34.
- ↑ Harzhauser, M. (2007). "Oligocene and Aquitanian gastropod faunas from the Sultanate of Oman and their biogeographic implications for the western Indo-Pacific". Palaeontographica Abteilung A 280: 75–121. doi:10.1127/pala/280/2007/75. https://paleodb.org/cgi-bin/bridge.pl?action=displayReference&reference_no=25532.
- ↑ Heidelberger, D.; Koch, L. (2005). "Gastropoda from the Givetian "Massenkalk" of Schwelm and Hohenlimburg (Saureland, Rheinsiches Schiefergebirge, Germany)". Geologica et Palaeontologica Sonderband 4: 1–107. https://paleodb.org/cgi-bin/bridge.pl?action=displayReference&reference_no=13860.
- ↑ Gofas, S. (2010). Gastropoda. World Register of Marine Species
- ↑ Grande C., Templado J. & Zardoya R. (2008). "Evolution of gastropod mitochondrial genome arrangements". BMC Evolutionary Biology 8 (1): 61. doi:10.1186/1471-2148-8-61. PMID 18302768. Bibcode: 2008BMCEE...8...61G.
- ↑ Uribe, J. E.; González, V. L.; Irisarri, I.; Kano, Y.; Herbert, D. G.; Strong, E. E.; Harasewych, M. G. (2022). "A phylogenomic backbone for gastropod molluscs.". Systematic Biology 71 (6): 1271–1280. https://doi.org/10.1093/sysbio/syac045.
- ↑ Williams, S. T.; Karube, S.; Ozawa, T. (2008). "Molecular systematics of Vetigastropoda: Trochidae, Turbinidae and Trochoidea redefined". Zoologica Scripta 37 (5): 483–506. doi:10.1111/j.1463-6409.2008.00341.x.
- ↑ taxonomy. "ErrorTaxonomy object not found". Ncbi.nlm.nih.gov. https://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Tree&id=216267&lvl=3&lin=f&keep=1&srchmode=1&unlock.
- ↑ 13.0 13.1 Aktipis, Stephanie W.; Giribet, Gonzalo (2010). "A phylogeny of Vetigastropoda and other "archaeogastropods": re-organizing old gastropod clades". Invertebrate Biology 129 (3): 220–240. doi:10.1111/j.1744-7410.2010.00198.x. https://edisciplinas.usp.br/pluginfile.php/130715/mod_resource/content/1/Aktipis%20%20Giribet,%202010.%20A%20phylogeny%20of%20Vetigastropoda%20and%20other%20archaeogastropods,%20re-organizing%20%20old%20gastropod%20clades.pdf.
External links
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Wikispecies has information related to Vetigastropoda |
- Aktipis, S. W.; Giribet, G. (2011). "Testing relationships among the vetigastropod taxa: A molecular approach". Journal of Molluscan Studies 78: 12–27. doi:10.1093/mollus/eyr023.
- Herbert D.G. (2015). An annotated catalogue and bibliography of the taxonomy, synonymy and distribution of the Recent Vetigastropoda of South Africa (Mollusca). Zootaxa. 4049(1): 1-98
- Gastropod taxonomy at Palaeos
- Gastropod reproductive behavior
- Gastropod Neuroscience
- Reconstructions of fossil gastropods
- 2004 Linnean taxonomy of gastropods
Wikidata ☰ 1Q141527 entry
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