Heliotrygon gomesi: Difference between revisions
Content deleted Content added
Tisquesusa (talk | contribs) |
Hollypringle (talk | contribs) Added some information (e.g. about eyes) to the description, and added taxonomy section. |
||
| Line 15: | Line 15: | ||
'''''Heliotrygon gomesi''''', the '''Gomes's round ray''' or '''China ray''', is a [[species]] of [[Potamotrygonidae|freshwater stingray]] native to the western [[Amazon basin]] in South America.<ref name="Authority">de Carvalho, M.R. and N.R. Lovejoy, 2011. Morphology and phylogenetic relationships of a remarkable new genus and two new species of Neotropical freshwater stingrays from the Amazon basin (Chondrichthyes: Potamotrygonidae). Zootaxa 2776:13-48.</ref><ref name="The Guardian">{{cite web|last1=Wheeler|first1=Quentin|title=New to Nature No 37: Heliotrygon stingrays|url=https://www.theguardian.com/science/2011/apr/10/heliotrygon-giant-stingray-amazon|website=The Guardian|publisher=The Guardian|accessdate=30 August 2015}}</ref> It is the [[type species]] of its [[genus]].<ref name="Authority"/> It spends the day in deep river channels, but moves closer to the shore at night to feed.<ref name=LastWhite2016>{{cite book| editors=Last; White; de Carvalho; Séret; Stehmann; and Naylor | title=Rays of the World | year=2016 | publisher=[[CSIRO]] | pages=620–623 | isbn=9780643109148 }}</ref> |
'''''Heliotrygon gomesi''''', the '''Gomes's round ray''' or '''China ray''', is a [[species]] of [[Potamotrygonidae|freshwater stingray]] native to the western [[Amazon basin]] in South America.<ref name="Authority">de Carvalho, M.R. and N.R. Lovejoy, 2011. Morphology and phylogenetic relationships of a remarkable new genus and two new species of Neotropical freshwater stingrays from the Amazon basin (Chondrichthyes: Potamotrygonidae). Zootaxa 2776:13-48.</ref><ref name="The Guardian">{{cite web|last1=Wheeler|first1=Quentin|title=New to Nature No 37: Heliotrygon stingrays|url=https://www.theguardian.com/science/2011/apr/10/heliotrygon-giant-stingray-amazon|website=The Guardian|publisher=The Guardian|accessdate=30 August 2015}}</ref> It is the [[type species]] of its [[genus]].<ref name="Authority"/> It spends the day in deep river channels, but moves closer to the shore at night to feed.<ref name=LastWhite2016>{{cite book| editors=Last; White; de Carvalho; Séret; Stehmann; and Naylor | title=Rays of the World | year=2016 | publisher=[[CSIRO]] | pages=620–623 | isbn=9780643109148 }}</ref> |
||
== Taxonomy == |
|||
''H. gomesi'' was first discovered in [[Jamari River|Rio Jamari,]] Brazil, and described by Marcelo Rodrigues de Carvalho and Nathan R. Lovejoy in 2011. The genus name, ''[[Heliotrygon]],'' is derived from the Greek word 'helios''','' meaning sun, and refers to the ray's circular body that radiates outward<ref name=":0">{{Cite book|url=https://books.google.co.uk/books?id=gfcPAAAAQBAJ&dq=heliotrygon+gomesi&source=gbs_navlinks_s|title=What on Earth?: 100 of Our Planet's Most Amazing New Species|last=Wheeler|first=Quentin|last2=Pennak|first2=Sara|date=2013-04-30|publisher=Penguin|isbn=9780698148321|language=en}}</ref> . This species is named ''gomesi'' in honor of Ulisses L. Gomes and his pioneering research on [[Elasmobranchii|elasmobranchs]] <ref name=":0" />. |
|||
Gomes' round ray is a member of the family [[Potamotrygonidae]]. Potamotrygonids are unique among living ray families in that they have diversified in the South American freshwater environment <ref>{{Cite journal|last=Silva|first=João Paulo C. B. da|last2=Carvalho|first2=Marcelo R. de|date=00/2011|title=A new species of Neotropical freshwater stingray of the genus Potamotrygon Garman, 1877 from the Río Madrede Díos, Peru (Chondrichthyes: Potamotrygonidae)|url=http://www.scielo.br/scielo.php?script=sci_abstract&pid=S0031-10492011000800001&lng=en&nrm=iso&tlng=en|journal=Papéis Avulsos de Zoologia|volume=51|issue=8|pages=139–154|doi=10.1590/S0031-10492011000800001|issn=0031-1049}}</ref>. |
|||
==Description== |
==Description== |
||
This ray reaches a disc width up to {{convert|58|cm|in|abbr=on}}.<ref name=LastWhite2016/> It is uniform gray to light brown above and it lacks any distinctive patterns. In addition to the lack of pattern, this species differs from ''[[Heliotrygon rosai|H. rosai]]'' by showing a slender tail width at its base, a slightly larger preorbital [[snout]] length, and a proportionally smaller pelvic inner length. It shows angular cartilages.<ref name="Authority" /> Both species of ''[[Heliotrygon]]'' have greatly reduced stings, rendering them virtually harmless.<ref name="The Guardian"/> |
This ray has an extremely circular body and reaches a disc width up to {{convert|58|cm|in|abbr=on}}.<ref name=LastWhite2016/> The eyes of ''H. gomesi'' are very small and unprotruding<ref name=":0" />. It is uniform gray to light brown above and it lacks any distinctive patterns. In addition to the lack of pattern, this species differs from ''[[Heliotrygon rosai|H. rosai]]'' by showing a slender tail width at its base, a slightly larger preorbital [[snout]] length, and a proportionally smaller pelvic inner length. It shows angular cartilages.<ref name="Authority" /> Both species of ''[[Heliotrygon]]'' have greatly reduced caudal stings, rendering them virtually harmless.<ref name="The Guardian"/> |
||
==References== |
==References== |
||
Revision as of 16:09, 21 October 2018
| Gomes's round ray | |
|---|---|
| Scientific classification | |
| Kingdom: | |
| Phylum: | |
| Class: | |
| Subclass: | |
| Order: | |
| Family: | |
| Genus: | |
| Species: | H. gomesi
|
| Binomial name | |
| Heliotrygon gomesi M. R. de Carvalho & Lovejoy, 2011
| |
Heliotrygon gomesi, the Gomes's round ray or China ray, is a species of freshwater stingray native to the western Amazon basin in South America.[1][2] It is the type species of its genus.[1] It spends the day in deep river channels, but moves closer to the shore at night to feed.[3]
Taxonomy
H. gomesi was first discovered in Rio Jamari, Brazil, and described by Marcelo Rodrigues de Carvalho and Nathan R. Lovejoy in 2011. The genus name, Heliotrygon, is derived from the Greek word 'helios', meaning sun, and refers to the ray's circular body that radiates outward[4] . This species is named gomesi in honor of Ulisses L. Gomes and his pioneering research on elasmobranchs [4].
Gomes' round ray is a member of the family Potamotrygonidae. Potamotrygonids are unique among living ray families in that they have diversified in the South American freshwater environment [5].
Description
This ray has an extremely circular body and reaches a disc width up to 58 cm (23 in).[3] The eyes of H. gomesi are very small and unprotruding[4]. It is uniform gray to light brown above and it lacks any distinctive patterns. In addition to the lack of pattern, this species differs from H. rosai by showing a slender tail width at its base, a slightly larger preorbital snout length, and a proportionally smaller pelvic inner length. It shows angular cartilages.[1] Both species of Heliotrygon have greatly reduced caudal stings, rendering them virtually harmless.[2]
References
- ^ a b c de Carvalho, M.R. and N.R. Lovejoy, 2011. Morphology and phylogenetic relationships of a remarkable new genus and two new species of Neotropical freshwater stingrays from the Amazon basin (Chondrichthyes: Potamotrygonidae). Zootaxa 2776:13-48.
- ^ a b Wheeler, Quentin. "New to Nature No 37: Heliotrygon stingrays". The Guardian. The Guardian. Retrieved 30 August 2015.
- ^ a b Rays of the World. CSIRO. 2016. pp. 620–623. ISBN 9780643109148.
{{cite book}}: Unknown parameter|editors=ignored (|editor=suggested) (help) - ^ a b c Wheeler, Quentin; Pennak, Sara (2013-04-30). What on Earth?: 100 of Our Planet's Most Amazing New Species. Penguin. ISBN 9780698148321.
- ^ Silva, João Paulo C. B. da; Carvalho, Marcelo R. de (00/2011). "A new species of Neotropical freshwater stingray of the genus Potamotrygon Garman, 1877 from the Río Madrede Díos, Peru (Chondrichthyes: Potamotrygonidae)". Papéis Avulsos de Zoologia. 51 (8): 139–154. doi:10.1590/S0031-10492011000800001. ISSN 0031-1049.
{{cite journal}}: Check date values in:|date=(help)
Further reading
- Ballantyne, J. S., and D. I. Fraser. "Euryhaline elasmobranchs." Fish Physiology: Euryhaline Fishes: Fish Physiology 32 (2013): 125-198.
- Fehlauer‐Ale, Karin H., and D. Timothy J. Littlewood. "Molecular phylogeny of Potamotrygonocotyle (Monogenea, Monocotylidae) challenges the validity of some of its species." Zoologica Scripta 40.6 (2011): 638-658.
- Orsén, Ludvig. "Potamotrygonidae, broskfiskarnas” outsider”."
External links
- "Heliotrygon gomesi" at the Encyclopedia of Life
- "Heliotrygon gomesi". Integrated Taxonomic Information System. Retrieved 30 August 2015.
- FishBase
 | This Chondrichthyes-related article is a stub. You can help Wikipedia by expanding it. |