Penion chathamensis
| Penion chathamensis | |
|---|---|
_(AM_MA70077-1).jpg) | |
| A shell of Penion chathamensis | |
Scientific classification  | |
| Kingdom: | Animalia |
| Phylum: | Mollusca |
| Class: | Gastropoda |
| Subclass: | Caenogastropoda |
| Order: | Neogastropoda |
| Family: | Austrosiphonidae |
| Genus: | Penion |
| Species: | P. chathamensis |
| Binomial name | |
| Penion chathamensis (Powell, 1938) | |
| Synonyms | |
Penion chathamensis is a species of very large predatory sea snail or whelk, a marine gastropod mollusc in the family Austrosiphonidae.[2] [3]
Description
The length of the shell attains 244 mm, its diameter 106 mm.
Penion chathamensis is a very large species of Penion siphon whelk.[4] Although P. chathamensis has separate sexes, the species does not appear to exhibit secondary sexual dimorphism in shell shape or size.[5]
A separate species, Penion fairfieldae was formerly recognised, but recent genetic data has demonstrated that the species is indistinguishable from Penion chathamensis.[1] Shells originally recognised as P. fairfieldae can be distinguished from P. chathamensis using shell size, but not using shell shape.[1]
Distribution
Penion chathamensis is endemic to New Zealand.[4][5][6] The species is distributed off of the west coast of the South Island, and occurs on Chatham Rise and in waters surrounding the Chatham Islands[4][5][6] The latter location is the type locality, giving rise to the binomial name of the species.[4]
References
- 1 2 3 Vaux, Felix; Gemmell, Michael R.; Hills, Simon F.K.; Marshall, Bruce A.; Beu, Alan G.; Crampton, James S.; Trewick, Steven A.; Morgan-Richards, Mary (2020). "Lineage Identification Affects Estimates of Evolutionary Mode in Marine Snails". Systematic Biology. 69 (6): 1106–1121. doi:10.1093/sysbio/syaa018. PMID 32163159.
- ↑ Penion chathamensis (A. W. B. Powell, 1938). 16 April 2026. Retrieved through: World Register of Marine Species.
- ↑ 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)" (PDF). Zoological Journal of the Linnean Society. 194 (3): 789–857. doi:10.1093/zoolinnean/zlab031.
- 1 2 3 4 Powell A. W. B., New Zealand Mollusca, William Collins Publishers Ltd, Auckland, New Zealand 1979 ISBN 0-00-216906-1
- 1 2 3 Vaux, Felix; Crampton, James S.; Marshall, Bruce A.; Trewick, Steven A.; Morgan-Richards, Mary (2017). "Geometric morphometric analysis reveals that the shells of male and female siphon whelks Penion chathamensis are the same size and shape". Molluscan Research. 37 (3): 194–201. doi:10.1080/13235818.2017.1279474. S2CID 90288210.
- 1 2 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.
External links
