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Aipysurus duboisii

Aipysurus duboisii, also known commonly as Dubois' sea snake and the reef shallows sea snake, is a species of extremely venomous snake in the subfamily Hydrophiinae of the family Elapidae. Its geographic range includes Papua New Guinea, New Caledonia and the northern, eastern and western coastal areas of Australia, that is the Coral Sea, Arafura Sea, Timor Sea and Indian Ocean.[6][4] It lives at depths up to 80 meters (262 feet) in coral reef flats, sandy and silty sediments which contain seaweed, invertebrates and corals or sponges that can serve as shelter. It preys upon moray eels and various fish that live on the seafloor, up to 110 cm (3.6 feet) in size. A. duboisii is viviparous, giving birth to live young rather than laying eggs.[7][8] It displays medium aggressiveness, i.e., will bite if provoked, but not spontaneously.[9] The fangs are 1.8 mm long, which are relatively short for a snake, and the venom yield is 0.43 mg.[10] Aipysurus duboisii is a crepuscular species, meaning that it is most active at dawn and dusk.[11]

Aipysurus duboisii
Scientific classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Class: Reptilia
Order: Squamata
Suborder: Serpentes
Family: Elapidae
Genus: Aipysurus
Species:
A. duboisii
Binomial name
Aipysurus duboisii
Synonyms

Aipysurus australis Sauvage, 1877[4] Pelagophis lubricus W. Peters & Doria, 1878[5]

It is the most venomous sea snake, and one of the top three most venomous snakes in the world.[12][13][14]

Etymology edit

The specific name, duboisii, is in honor of Belgian naturalist Charles Frédéric Dubois.[15]

Description edit

Adults of A. duboisii grow up to 148 cm (4.86 feet) in total length (including tail) but usually to around 80 cm (2.6 feet). The head is slightly wider than the neck with nostrils on its upper part and nasals contacting each other. Eyes are separated from supralabial scales by a row of large subocular scales. Dorsal scales are usually smooth, but sometimes have a small keel or small knobs. Individuals vary significantly in color and body pattern. The tail is relatively long; the chin and throat have lighter color than rest of the body.[7]

Venom edit

The acute toxicity of snake venom is conventionally tested on laboratory animals and is evaluated in terms of the median lethal dose (LD50), that is, the dose required to kill half the members of a tested population divided by the weight of the tested animal. The LD50 depends on the animal. Rabbits are about twice as sensitive to sea snake venom as mice, and fish and frogs are even more susceptible. The LD50 for subcutaneous injection of A. duboisii venom into mice is 0.044 mg/kg of body weight. This makes A. duboisii the most venomous sea snake tested, and the third most venomous snake overall, behind the inland taipan (Oxyuranus microlepidotus, LD50=0.025 mg/kg) and the eastern brown snake (Pseudonaja textilis, LD50=0.036 mg/kg).[10][12][13][14][16]

See also edit

References edit

  1. ^ Lukoschek, V.; Guinea, M.; Milton, D.; Courtney, T.; Fletcher, E. (2010). "Aipysurus duboisii ". IUCN Red List of Threatened Species. 2010: e.T176748A7296594. doi:10.2305/IUCN.UK.2010-4.RLTS.T176748A7296594.en. Retrieved 20 November 2021.
  2. ^ Bavay A (1869). "Catalogue des Reptiles de la Nouvelle-Calédonie et descriptions d'espèces nouvelles ". Mémoires de la Société Linnéenne de Normandie 15:1-37. (Aipysurus duboisii, new species, p. 33). (in French).
  3. ^ "Aipysurus ". Integrated Taxonomic Information System. Retrieved 20 September 2007.
  4. ^ a b "Australian Faunal Directory: Aipysurus duboisii ". biodiversity.org.au. from the original on 2021-10-09. Retrieved 2021-10-27.
  5. ^ Species Aipysurus duboisii at The Reptile Database www.reptile-database.org.
  6. ^ Aipysurus duboisii — Dubois' Seasnake, Australian Department of Sustainability, Environment, Water, Population and Communities
  7. ^ a b Aipysurus duboisii Bavay, 1869, SeaLifeBase site: UBC - Canada
  8. ^ Heatwole, p. 22.
  9. ^ Heatwole, p. 121.
  10. ^ a b Heatwole, p. 115.
  11. ^ Heatwole, p. 40.
  12. ^ a b Ernst, Carl H.; Zug, George R. [in German] (1996). Snakes in Question: The Smithsonian Answer Book. Washington, District of Columbia: Smithsonian Institution Scholarly Press. ISBN 1-56098-648-4.
  13. ^ a b Fry, Bryan, Deputy Director, Australian Venom Research Unit, University of Melbourne (March 9, 2002). . venomdoc.com. (archived) Retrieved October 14, 2013.
  14. ^ a b The Australian venom research unit (August 25, 2007). "Which snakes are the most venomous?" 2014-06-26 at the Wayback Machine. University of Melbourne. Retrieved October 14, 2013.
  15. ^ Beolens, Bo; Watkins, Michael; Grayson, Michael (2011). The Eponym Dictionary of Reptiles. Baltimore: Johns Hopkins University Press. xiii + 296 pp. ISBN 978-1-4214-0135-5. (Aipysurus duboisi, p. 76).
  16. ^ Gopalakrishnakone P (1994). Sea Snake Toxinology. Singapore: National University of Singapore Press. ISBN 9971-69-193-0. p. 98.

Bibliography edit

  • Heatwole, Harold (1999). Sea Snakes. Australian Natural History Series. Sydney: University of New South Wales Press. 148 pp. ISBN 0-86840-776-3.


aipysurus, duboisii, also, known, commonly, dubois, snake, reef, shallows, snake, species, extremely, venomous, snake, subfamily, hydrophiinae, family, elapidae, geographic, range, includes, papua, guinea, caledonia, northern, eastern, western, coastal, areas,. Aipysurus duboisii also known commonly as Dubois sea snake and the reef shallows sea snake is a species of extremely venomous snake in the subfamily Hydrophiinae of the family Elapidae Its geographic range includes Papua New Guinea New Caledonia and the northern eastern and western coastal areas of Australia that is the Coral Sea Arafura Sea Timor Sea and Indian Ocean 6 4 It lives at depths up to 80 meters 262 feet in coral reef flats sandy and silty sediments which contain seaweed invertebrates and corals or sponges that can serve as shelter It preys upon moray eels and various fish that live on the seafloor up to 110 cm 3 6 feet in size A duboisii is viviparous giving birth to live young rather than laying eggs 7 8 It displays medium aggressiveness i e will bite if provoked but not spontaneously 9 The fangs are 1 8 mm long which are relatively short for a snake and the venom yield is 0 43 mg 10 Aipysurus duboisii is a crepuscular species meaning that it is most active at dawn and dusk 11 Aipysurus duboisii Conservation status Least Concern IUCN 3 1 1 Scientific classification Domain Eukaryota Kingdom Animalia Phylum Chordata Class Reptilia Order Squamata Suborder Serpentes Family Elapidae Genus Aipysurus Species A duboisii Binomial name Aipysurus duboisiiBavay 1869 2 3 Synonyms Aipysurus australis Sauvage 1877 4 Pelagophis lubricus W Peters amp Doria 1878 5 It is the most venomous sea snake and one of the top three most venomous snakes in the world 12 13 14 Contents 1 Etymology 2 Description 3 Venom 4 See also 5 References 6 BibliographyEtymology editThe specific name duboisii is in honor of Belgian naturalist Charles Frederic Dubois 15 Description editAdults of A duboisii grow up to 148 cm 4 86 feet in total length including tail but usually to around 80 cm 2 6 feet The head is slightly wider than the neck with nostrils on its upper part and nasals contacting each other Eyes are separated from supralabial scales by a row of large subocular scales Dorsal scales are usually smooth but sometimes have a small keel or small knobs Individuals vary significantly in color and body pattern The tail is relatively long the chin and throat have lighter color than rest of the body 7 Venom editThe acute toxicity of snake venom is conventionally tested on laboratory animals and is evaluated in terms of the median lethal dose LD50 that is the dose required to kill half the members of a tested population divided by the weight of the tested animal The LD50 depends on the animal Rabbits are about twice as sensitive to sea snake venom as mice and fish and frogs are even more susceptible The LD50 for subcutaneous injection of A duboisii venom into mice is 0 044 mg kg of body weight This makes A duboisii the most venomous sea snake tested and the third most venomous snake overall behind the inland taipan Oxyuranus microlepidotus LD50 0 025 mg kg and the eastern brown snake Pseudonaja textilis LD50 0 036 mg kg 10 12 13 14 16 See also editSnakebiteReferences edit Lukoschek V Guinea M Milton D Courtney T Fletcher E 2010 Aipysurus duboisii IUCN Red List of Threatened Species 2010 e T176748A7296594 doi 10 2305 IUCN UK 2010 4 RLTS T176748A7296594 en Retrieved 20 November 2021 Bavay A 1869 Catalogue des Reptiles de la Nouvelle Caledonie et descriptions d especes nouvelles Memoires de la Societe Linneenne de Normandie 15 1 37 Aipysurus duboisii new species p 33 in French Aipysurus Integrated Taxonomic Information System Retrieved 20 September 2007 a b Australian Faunal Directory Aipysurus duboisii biodiversity org au Archived from the original on 2021 10 09 Retrieved 2021 10 27 Species Aipysurus duboisii at The Reptile Database www reptile database org Aipysurus duboisii Dubois Seasnake Australian Department of Sustainability Environment Water Population and Communities a b Aipysurus duboisii Bavay 1869 SeaLifeBase site UBC Canada Heatwole p 22 Heatwole p 121 a b Heatwole p 115 Heatwole p 40 a b Ernst Carl H Zug George R in German 1996 Snakes in Question The Smithsonian Answer Book Washington District of Columbia Smithsonian Institution Scholarly Press ISBN 1 56098 648 4 a b Fry Bryan Deputy Director Australian Venom Research Unit University of Melbourne March 9 2002 Snakes Venom LD50 list of the available data and sorted by route of injection venomdoc com archived Retrieved October 14 2013 a b The Australian venom research unit August 25 2007 Which snakes are the most venomous Archived 2014 06 26 at the Wayback Machine University of Melbourne Retrieved October 14 2013 Beolens Bo Watkins Michael Grayson Michael 2011 The Eponym Dictionary of Reptiles Baltimore Johns Hopkins University Press xiii 296 pp ISBN 978 1 4214 0135 5 Aipysurus duboisi p 76 Gopalakrishnakone P 1994 Sea Snake Toxinology Singapore National University of Singapore Press ISBN 9971 69 193 0 p 98 Bibliography editHeatwole Harold 1999 Sea Snakes Australian Natural History Series Sydney University of New South Wales Press 148 pp ISBN 0 86840 776 3 Retrieved from https en wikipedia org w index php title Aipysurus duboisii amp oldid 1139161115, wikipedia, wiki, book, books, library,

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