Penion maximus
| Penion maximus | |
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| A shell of Penion maximus | |
Scientific classification 
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| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Mollusca |
| Class: | Gastropoda |
| Subclass: | Caenogastropoda |
| Order: | Neogastropoda |
| Family: | Austrosiphonidae |
| Genus: | Penion |
| Species: | P. maximus
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| Binomial name | |
| Penion maximus (Tryon, G.W., 1881)
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Penion maximus is a species of very large predatory sea snail or whelk, commonly known as giant whelk or great whelk, a marine gastropod mollusc in the family Austrosiphonidae.[1]
Description
[edit]Penion maximus is the largest species of Penion siphon whelk, and is endemic to Australia.[2][3] The species could be confused with the sympatric species P. mandarinus, however P. mandarinus is typically smaller and has a smoother shell with a shorter siphonal canal.[2] Their shells are highly coveted due to the intricate designs embedded in onto the shells.
Distribution
[edit]The range of the species extends from waters off Tasmania and Victoria to lower Queensland.[2][3]
Evolution
[edit]Penion maximus is closely related to another Australian species P. mandarinus.[3][4] The species have overlapping geographic ranges (sympatry) and may have evolved from a common ancestor via niche differentiation based on prey size and water depth.[4]
References
[edit]- ^ Kantor, Yuri I.; Fedosov, Alexander E.; Kosyan, Alisa R.; Puillandre, Nicolas; Sorokin, Pavel A.; Kano, Yasunori; Clark, Roger; Bouchet, Philippe (2022). "Molecular phylogeny and revised classification of the Buccinoidea (Neogastropoda)". Zoological Journal of the Linnean Society. 194 (3): 789–857. doi:10.1093/zoolinnean/zlab031.
- ^ a b c Ponder, W.F. (1973). "A review of the Australian species of Penion Fischer (Neogastropoda: Buccinidae)". Journal of the Malacological Society of Australia. 2 (4): 401–428. doi:10.1080/00852988.1973.10673868.
- ^ a b c Vaux, Felix; Hills, Simon F.K.; Marshall, Bruce A.; Trewick, Steven A.; Morgan-Richards, Mary (2017). "A phylogeny of Southern Hemisphere whelks (Gastropoda: Buccinulidae) and concordance with the fossil record". Molecular Phylogenetics and Evolution. 114 (2017): 367–381. doi:10.1016/j.ympev.2017.06.018. PMID 28669812.
- ^ a b Vaux, Felix; Crampton, James S.C.; Trewick, Steven A.; Marshall, Bruce A.; Beu, Alan G.; Hills, Simon F.K.; Morgan-Richards, Mary (2018). "Evolutionary lineages of marine snails identified using molecular phylogenetics and geometric morphometric analysis of shells". Molecular Phylogenetics and Evolution. 127 (October 2018): 626–637. doi:10.1016/j.ympev.2018.06.009. PMID 29913310. S2CID 49303166.
External links
[edit]- Molluscs of Tasmania: Buccinidae - Siphonaliinae: Penion maximus (Tryon, 1881) ('great whelk')
- Seashells of New South Wales: Penion maximus (Tryon, 1881)
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