Thaumeledone gunteri: Difference between revisions
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{{Short description|Species of mollusc}} |
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{{italic title}} |
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{{Speciesbox |
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{{Taxobox |
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| taxon = Thaumeledone gunteri |
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| regnum = [[Animal]]ia |
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| phylum = [[Mollusca]] |
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| classis = [[Cephalopod]]a |
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| ordo = [[Octopoda]] |
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| familia = [[Octopodidae]] |
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| subfamilia = [[Graneledoninae]] |
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| genus = ''[[Thaumeledone]]'' |
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| species = '''''T. gunteri''''' |
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| binomial = ''Thaumeledone gunteri'' |
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'''''Thaumeledone gunteri''''' is a [[species]] of small, [[Benthos|benthic]], deep-sea [[octopus]] found in the [[bathyal zone]] in the [[Southern Ocean]] near [[South Georgia]].<ref name=WoRMS/> |
'''''Thaumeledone gunteri''''' is a [[species]] of small, [[Benthos|benthic]], deep-sea [[octopus]] found in the [[bathyal zone]] in the [[Southern Ocean]] near [[South Georgia Island|South Georgia]].<ref name=WoRMS/> |
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==Description== |
==Description== |
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The [[Mantle (mollusc)|mantle]] length of ''Thaumeledone gunteri'' is typically about 5 |
The [[Mantle (mollusc)|mantle]] length of ''Thaumeledone gunteri'' is typically about {{convert|5|cm|in|abbr=on}} and the total length is {{convert|10|cm|in|abbr=on}}, the arms being relatively short at 5 cm. The background colour is whitish, but the dorsal and ventral surfaces are covered by large, irregular, deep purple [[tubercle]]s. The web linking the arms is uniformly pale. The head is narrower than the mantle, with several large tubercles above the eye. The eight arms are joined by a deep web, with about 35 small suckers on each arm. The funnel organ is "VV"-shaped and there are five elements in the [[radula]]. The posterior [[salivary gland]], a diagnostic feature in this genus, has a diameter of 11 mm.<ref name=DSR>{{cite journal|author=Allcock, A. L.|author2=M.A. Collinsb|author3=U. Piatkowskic|author4=M. Vecchioned |year=2004 |title=''Thaumeledone'' and other deep water octopodids from the Southern Ocean |journal=Deep-Sea Research Part II |volume=51 |issue=14–16 |pages=1883–1901 |publisher=Elsevier |doi= 10.1016/j.dsr2.2004.07.019|url=http://www.qub.ac.uk/schools/SchoolofBiologicalSciences/FileStore/Filetoupload,34336,en.pdf}}</ref> |
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==Phylogenetic relationships== |
==Phylogenetic relationships== |
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The funnel organ in ''T. gunteri'' is similar to that in ''[[Thaumeledone peninsulae]]'' and they both share a characteristic loop in the rectum. ''[[Thaumeledone rotunda]]'' is a circumpolar species found at greater depths and has several [[morphology (biology)|morphological]] features differing from the other two species. Despite this, a [[Phylogenetics|phylogenetic]] study undertaken in 2008 of the molecular relationships in the genus, determined that ''T. gunteri'' and ''T. rotunda'' are sister [[Taxon|taxa]] and that ''T. peninsulae'' is more distantly related.<ref>{{cite journal |author=Strugnell, J. M. |
The funnel organ in ''T. gunteri'' is similar to that in ''[[Thaumeledone peninsulae]]'' and they both share a characteristic loop in the rectum. ''[[Thaumeledone rotunda]]'' is a circumpolar species found at greater depths and has several [[morphology (biology)|morphological]] features differing from the other two species. Despite this, a [[Phylogenetics|phylogenetic]] study undertaken in 2008 of the molecular relationships in the genus, determined that ''T. gunteri'' and ''T. rotunda'' are sister [[Taxon|taxa]] and that ''T. peninsulae'' is more distantly related.<ref>{{cite journal |author=Strugnell, J. M. |author2=M. A. Collins |author3=A. L. Allcock |year=2008 |title=Molecular evolutionary relationships of the octopodid genus Thaumeledone (Cephalopoda: Octopodidae) from the Southern Ocean |journal=Antarctic Science |volume=20 |issue=3 |pages=245–51 |doi= 10.1017/s0954102008001132|s2cid=86288452 |url=http://journals.cambridge.org/download.php?file=%2FANS%2FANS20_03%2FS0954102008001132a.pdf&code=79f1e0d6a899ead1e4a6c55bf429b91c |doi-access=free }}</ref> |
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==Distribution== |
==Distribution== |
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''T. gunteri'' is found in the far south Atlantic Ocean in an area around South Georgia, including the [[Shag Rocks, South Georgia|Shag Rocks]], ranging from 53°S to 55°S and 39°W to 35°W.<ref>[http://www.sealifebase.org/Summary/SpeciesSummary.php?ID=57688&genusname=Thaumeledone&speciesname=gunteri ''Thaumeledone gunteri'' - Robson, 1930] SeaLifeBase. Retrieved 2011-10-06.</ref> It has been caught by [[trawling]] at depths of 364-964 |
''T. gunteri'' is found in the far south Atlantic Ocean in an area around South Georgia, including the [[Shag Rocks, South Georgia|Shag Rocks]], ranging from 53°S to 55°S and 39°W to 35°W.<ref>[http://www.sealifebase.org/Summary/SpeciesSummary.php?ID=57688&genusname=Thaumeledone&speciesname=gunteri ''Thaumeledone gunteri'' - Robson, 1930] SeaLifeBase. Retrieved 2011-10-06.</ref> It has been caught by [[trawling]] at depths of {{convert|364|-|964|m|ft|abbr=on}}, but may well occur at greater depths, as these waters are relatively underexplored.<ref name=DSR/> |
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==References== |
==References== |
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{{Reflist}} |
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{{Taxonbar|from=Q2500847}} |
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[[Category:Octopodidae]] |
[[Category:Octopodidae]] |
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[[Category: |
[[Category:Cephalopods described in 1930]] |
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Latest revision as of 18:14, 29 August 2024
| Thaumeledone gunteri | |
|---|---|
Scientific classification 
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| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Mollusca |
| Class: | Cephalopoda |
| Order: | Octopoda |
| Family: | Megaleledonidae |
| Genus: | Thaumeledone |
| Species: | T. gunteri
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| Binomial name | |
| Thaumeledone gunteri | |
Thaumeledone gunteri is a species of small, benthic, deep-sea octopus found in the bathyal zone in the Southern Ocean near South Georgia.[1]
Description
[edit]The mantle length of Thaumeledone gunteri is typically about 5 cm (2.0 in) and the total length is 10 cm (3.9 in), the arms being relatively short at 5 cm. The background colour is whitish, but the dorsal and ventral surfaces are covered by large, irregular, deep purple tubercles. The web linking the arms is uniformly pale. The head is narrower than the mantle, with several large tubercles above the eye. The eight arms are joined by a deep web, with about 35 small suckers on each arm. The funnel organ is "VV"-shaped and there are five elements in the radula. The posterior salivary gland, a diagnostic feature in this genus, has a diameter of 11 mm.[2]
Phylogenetic relationships
[edit]The funnel organ in T. gunteri is similar to that in Thaumeledone peninsulae and they both share a characteristic loop in the rectum. Thaumeledone rotunda is a circumpolar species found at greater depths and has several morphological features differing from the other two species. Despite this, a phylogenetic study undertaken in 2008 of the molecular relationships in the genus, determined that T. gunteri and T. rotunda are sister taxa and that T. peninsulae is more distantly related.[3]
Distribution
[edit]T. gunteri is found in the far south Atlantic Ocean in an area around South Georgia, including the Shag Rocks, ranging from 53°S to 55°S and 39°W to 35°W.[4] It has been caught by trawling at depths of 364–964 m (1,194–3,163 ft), but may well occur at greater depths, as these waters are relatively underexplored.[2]
References
[edit]- ^ a b Thaumeledone gunteri - Robson, 1930 World Register of Marine Species. Retrieved 2011-10-06.
- ^ a b Allcock, A. L.; M.A. Collinsb; U. Piatkowskic; M. Vecchioned (2004). "Thaumeledone and other deep water octopodids from the Southern Ocean" (PDF). Deep-Sea Research Part II. 51 (14–16). Elsevier: 1883–1901. doi:10.1016/j.dsr2.2004.07.019.
- ^ Strugnell, J. M.; M. A. Collins; A. L. Allcock (2008). "Molecular evolutionary relationships of the octopodid genus Thaumeledone (Cephalopoda: Octopodidae) from the Southern Ocean". Antarctic Science. 20 (3): 245–51. doi:10.1017/s0954102008001132. S2CID 86288452.
- ^ Thaumeledone gunteri - Robson, 1930 SeaLifeBase. Retrieved 2011-10-06.