Field's horned viper: Difference between revisions
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{{Short description|Species of snake}}
| name = ''Pseudocerastes persicus fieldi''▼
{{Speciesbox
| image = Field's Horned Viper.jpg
| status = LC ▼
| image_caption = Field's horned viper in captivity
| status_system = IUCN3.1
| status_ref = <ref name=IUCN>{{
|
▲| trinomial_authority = [[Karl Patterson Schmidt|K.P. Schmidt]], 1930
| range_map = Pseudocerastes fieldi distribution.png
| synonyms = *
*
*
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*''Pseudocerastes fieldi'' <br / | synonyms_ref = <ref name="McD99">[[:fr:Roy Wallace McDiarmid|McDiarmid RW]], [[Jonathan A. Campbell|Campbell JA]], }}
'''Field's horned viper'
==Taxonomy and etymology==
The [[subspecific name]], ''fieldi'', is in honor of [[Americans|American]] [[anthropologist]] [[Henry Field (anthropologist)|Henry Field]], who collected the [[holotype]]. The [[Field Museum of Natural History]] in [[Chicago]] and its scientific publication, ''Fieldiana'', in which [[Karl Patterson Schmidt|K.P. Schmidt's]] original description of this viper appeared, are named for Henry Field's grandfather, [[Marshall Field]].<ref>Beolens B, Watkins M, Grayson M. 2011. ''The Eponym Dictionary of Reptiles''. Baltimore: Johns Hopkins University Press. xiii + 296 pp. ISBN 978-1-4214-0135-5. (''Pseudocerastes fieldi'', p. 89).</ref>▼
▲The [[
==Description==
Outwardly, Field'
<br />
{|cellspacing=0 cellpadding=2 align="center" border=1 style="border-collapse: collapse;"
!bgcolor="#f0f0f0"|
!bgcolor="#f0f0f0"|''P
!bgcolor="#f0f0f0"|''P
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|style="width:40%"|Scales separating [[nasal scale|nasal]] and [[rostral scale|rostral]]
Line 44 ⟶ 39:
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|[[Dorsal scale]] rows at midbody
|align="center"|
|align="center"|
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|[[Ventral scales]]
|align="center"|
|align="center"|
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|[[Subcaudal scales]]
|align="center"|
|align="center"|
|-
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Additional differences from
==Geographic distribution==
According to [[:fr:Roy Wallace McDiarmid|McDiarmid]] et al. (1999) ''P
The [[Type locality (biology)|type locality]] given in the original description is "Bair Wells, Transjordania" [Jordan].<ref name="McD99"/>
According to [[species:David Mallow|Mallow]] et al. (2003) it is found in the Sinai Peninsula, southern Israel, Jordan, extreme northern Saudi Arabia, and southwestern Iraq.<ref name="Mal03"/>
==
The preferred natural [[habitat]]s of ''P. fieldi'' are [[desert]] and [[shrubland]], at altitudes up to {{cvt|1,300|m|ft}}. It has also been found in agricultural areas, but not in or around houses.<ref name=IUCN/>
There is a more pronounced difference between the two subspecies with regard to their [[venom]]. While ''[[Pseudocerastes|P. p. persicus]]'' venom exhibits strong [[Bleeding|hemorrhagic]] activity typical of most [[Viperidae|vipers]], the venom of ''P. p. fieldi'' is unusual in that contains several fractions that show marked [[Neurotoxicity|neurotoxic]] activity. No [[antivenin]] is available for [[Snakebite|bites]] from either subspecies. It is reported that a polyvalent antiserum does offer some protection from the hemotoxins, but none against the neurotoxic effects of ''P. p. fieldi'' venom.<ref name="Mal03"/><ref name="SB95"/>▼
==
''P. fieldi'' is [[Oviparity|oviparous]].<ref name="NRDB"/>
▲Some sources elevate ''P. p. fieldi'' to species level.<ref name=IUCN/><ref name="NRDB">{{NRDB species|genus=Pseudocerastes|species=fieldi|date=8 September|year=2007}}</ref> The first phylogenetic study of the genus ''Pseudocerastes'', published by Fathinia et al. in 2014, shows that ''P. p. fieldi'' has equal genetic distance from both ''P. p. persicus'' and another species of the same genus, ''[[Pseudocerastes urarachnoides|P. urarachnoides]]''.<ref>{{cite journal|url=https://www.researchgate.net/publication/263767026_Turkish_Journal_of_Zoology_Molecular_systematics_of_the_genus_Pseudocerastes_%28Ophidia_Viperidae%29_based_on_the_mitochondrial_cytochrome_b_gene |author=Fathinia, B., et al. |title=Molecular systematics of the genus ''Pseudocerastes'' (Ophidia: Viperidae) based on the mitochondrial cytochrome ''b'' gene |work=Turkish Journal of Zoology |volume=38 |pages=575–581 |doi=}}</ref>
==
▲There is a more pronounced difference between the two
==References==
{{
==Further reading==
{{refbegin}}
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*[[species:Fritz Jürgen Obst|Obst FJ
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{{refend}}
{{Taxonbar|from=Q2704658|from2=Q58096319}}
▲{{Commons|Pseudocerastes persicus}}
▲{{Use dmy dates|date=September 2010}}
[[Category:Viperinae]]
[[Category:Reptiles of Asia]]▼
[[Category:Snakes of Africa]]
[[Category:Vertebrates of Egypt]]
[[Category:Reptiles of
[[Category:Fauna of Iraq]]
[[Category:
[[Category:Taxa named by Karl Patterson Schmidt]]
[[Category:Snakes of Jordan]]
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Revision as of 20:54, 30 December 2023
Field's horned viper | |
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Field's horned viper in captivity | |
Scientific classification | |
Domain: | Eukaryota |
Kingdom: | Animalia |
Phylum: | Chordata |
Class: | Reptilia |
Order: | Squamata |
Suborder: | Serpentes |
Family: | Viperidae |
Genus: | Pseudocerastes |
Species: | P. fieldi
|
Binomial name | |
Pseudocerastes fieldi K.P. Schmidt, 1930
| |
Synonyms[2][3] | |
Field's horned viper[4] (Pseudocerastes fieldi) is a species of snake in the family Viperidae.[5] The species is native to the deserts of the Middle East. Like all other vipers, it is venomous. It was previously considered a subspecies of the Persian horned viper (Pseudocerastes persicus). The main differences between this species and the Persian horned viper are in scalation and venom composition.
Taxonomy and etymology
Formerly considered a subspecies of P. persicus, most sources elevate P. fieldi to species level.[1][3] The first phylogenetic study of the genus Pseudocerastes, published by Fathinia et al. in 2014, shows that P. fieldi has equal genetic distance from both P. persicus and another species of the same genus, P. urarachnoides.[6]
The specific epithet fieldi is in honor of American anthropologist Henry Field, who collected the holotype. The Field Museum of Natural History in Chicago and its scientific publication, Fieldiana, in which K.P. Schmidt's original description of this viper appeared, are named for Henry Field's grandfather, Marshall Field.[7]
Description
Outwardly, Field's horned viper differs from the Persian horned viper (Pseudocerastes persicus) in certain (lower) scale counts:[8]
P. fieldi | P. persicus | |
---|---|---|
Scales separating nasal and rostral | 1 | 2 |
Dorsal scale rows at midbody | 21–23 | 23–25 |
Ventral scales | 127–142 | 144–158 |
Subcaudal scales | 34–46 | 38–48 |
Additional differences from the Persian horned viper include much shorter (relatively to the overall body length) tail as well as the fact that while in P. persicus all dorsal and lateral scales are strongly keeled, P. fieldi has several rows of almost smooth lateral scales.[3]
Geographic distribution
According to McDiarmid et al. (1999) P. fieldi is found in the Sinai Peninsula, Israel, Jordan, northern Saudi Arabia, northwestern Iraq, and possibly in southern Syria.
The type locality given in the original description is "Bair Wells, Transjordania" [Jordan].[2]
According to Mallow et al. (2003) it is found in the Sinai Peninsula, southern Israel, Jordan, extreme northern Saudi Arabia, and southwestern Iraq.[4]
Habitat
The preferred natural habitats of P. fieldi are desert and shrubland, at altitudes up to 1,300 m (4,300 ft). It has also been found in agricultural areas, but not in or around houses.[1]
Reproduction
Venom
There is a more pronounced difference between the two species, P. fieldi and P. persicus, with regard to their venom. While Persian horned viper venom exhibits strong hemorrhagic activity typical of most vipers, the venom of P. fieldi is unusual in that it contains several fractions that show marked neurotoxic activity. No antivenin is available for bites from either species. It is reported that a polyvalent antiserum does offer some protection from the hemotoxins, but none against the neurotoxic effects of P. fieldi venom.[4][8]
References
- ^ a b c Amr, Z.S.S.; Al Johany, A.M.H.; Baha El Din, S.; Disi, A.M.; Nilson, G.; Werner, Y.L. (2012). "Pseudocerastes fieldi ". IUCN Red List of Threatened Species. 2012: e.T164564A1058258. doi:10.2305/IUCN.UK.2012.RLTS.T164564A1058258.en. Retrieved 21 February 2022.
- ^ a b McDiarmid RW, Campbell JA, Touré TA (1999). Snake Species of the World: A Taxonomic and Geographic Reference, Volume 1. Washington, District of Columbia: Herpetologists' League. 511 pp. ISBN 1-893777-00-6 (series). ISBN 1-893777-01-4 (volume).
- ^ a b c d Pseudocerastes fieldi at the Reptarium.cz Reptile Database. Accessed 2018-11-02.
- ^ a b c Mallow D, Ludwig D, Nilson G (2003). True Vipers: Natural History and Toxinology of Old World Vipers. Malabar, Florida: Krieger Publishing Company, Malabar, Florida. 359 pp. ISBN 0-89464-877-2.
- ^ "Pseudocerastes fieldi ". Integrated Taxonomic Information System. Retrieved 3 August 2006.
- ^ Fathinia B; et al. (2014). "Molecular systematics of the genus Pseudocerastes (Ophidia: Viperidae) based on the mitochondrial cytochrome b gene". Turkish Journal of Zoology. 38 (5): 575–581. doi:10.3906/zoo-1308-25. hdl:1854/LU-5960680.
- ^ 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. (Pseudocerastes fieldi, p. 89).
- ^ a b Spawls S, Branch B (1995). The Dangerous Snakes of Africa. Dubai: Ralph Curtis Books. Oriental Press. 192 pp. ISBN 0-88359-029-8.
Further reading
- Duméril AMC, Bibron G, Duméril AHA (1854). Erpétologie générale ou histoire naturelle complète des reptiles. Tome septième. Deuxième partie, comprenant l'histoire des serpents venimeux. Paris: Librairie Encyclopédique de Roret. pp. i–xii + 781–1536. (Cerastes persicus, new species, pp. 1443–1444). (in French).
- Joger U (1984). "The venomous snakes of the Near and Middle East". Beihefte zum Tübinger Atlas des Vorderen Orients, A 12. Wiesbaden: Dr. Ludwig Reichert Verlag.
- Lehmann, Michael (1982). "Pseudocerastes persicus fieldi (Schmidt) im Terrarium". Herpetofauna 4 (21): 20–22. (in German).
- Marx H, Rabb GB. 1965. Relationships and Zoogeography of the Viperine Snakes (Family Viperidae). Fieldiana Zool. 44 (21): 161–206.
- Obst FJ (1983). "Zur Kenntnis der Schlangengattung Vipera". Zoologische Abhandlungen der staatliches Museum für Tierkunde in Dresden 38: 229–235. (in German).
- Schmidt KP (1930). "Reptiles of Marshall Field North Arabian Desert Expeditions, 1927–1928". Fieldiana Zool. 17 (6): 221–130. (Pseudocerastes fieldi, new species, pp. 227–229 + Figure 2).