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'''''Amblyomma cajennense''''' or '''Cayenne tick''' is a [[species]] of [[tick]] found in a range from the southern part of the [[United States]] to northern [[Argentina]], through [[Central America]] and some of the [[Caribbean]]. As a consequence, the species has adapted to a wide range of environmental conditions. There are also major geographic barriers such as large rivers and the [[Andes]] mountain range.<ref name="Estrada-Peña et al 2004">{{cite journal |last1=Estrada-Peña |first1=A. |last2=Guglielmone |first2=A. A. |last3=Mangold |first3=A. J. |title=The distribution and ecological ’preferences’ of the tick Amblyomma cajennense (Acari: Ixodidae), an ectoparasite of humans and other mammals in the Americas. |journal=Ann Trop Med Parasitol |date=2004 |volume=98 |pages=283-292}}</ref>
'''''Amblyomma cajennense''''' or '''Cayenne tick''' is a [[species]] of [[tick]] found in a range from the southern part of the [[United States]] to northern [[Argentina]], through [[Central America]] and some of the [[Caribbean]]. As a consequence, the species has adapted to a wide range of environmental conditions. There are also major geographic barriers such as large rivers and the [[Andes]] mountain range.<ref name="Estrada-Peña et al 2004">{{cite journal |last1=Estrada-Peña |first1=A. |last2=Guglielmone |first2=A. A. |last3=Mangold |first3=A. J. |title=The distribution and ecological 'preferences' of the tick Amblyomma cajennense (Acari: Ixodidae), an ectoparasite of humans and other mammals in the Americas. |journal=Ann Trop Med Parasitol |date=2004 |volume=98 |issue=3 |pages=283–292|doi=10.1179/000349804225003316 |pmid=15119974 |s2cid=19387385 }}</ref>


There has been debate over whether ''A. cajennense'' is a single species or whether it is a complex of species. In the 1930s, [[Maria Tonelli-Rondelli]] proposed that the morphological variation within the species indicated that it was a complex, while in the 1950s this variation was proposed to be due to normal variation between individuals of one species. Molecular biological analyses have indicated that ''A. cajennense'' is a complex of species.<ref name="Troyo-et-al-2022">{{cite journal |last1=Troyo |first1=Adriana |last2=González-Sequeira |first2=María Paula |last3=Aguirre-Salazar |first3=Mónica |last4=Cambronero-Ortíz |first4=Ian |last5=Chaves-González |first5=Luis Enrique |last6=Mejías-Alpízar |first6=María José |last7=Alvarado-Molina |first7=Kendall |last8=Calderón-Arguedas |first8=Ólger |last9=Rojas-Araya |first9=Diana |title=Acknowledging extraordinary women in the history of medical entomology |journal=Parasites and Vectors |date=2022 |volume=14 |page=114 |url=https://parasitesandvectors.biomedcentral.com/articles/10.1186/s13071-022-05234-6 |access-date=1 April 2022}}</ref>
There has been debate over whether ''A. cajennense'' is a single species or whether it is a complex of species. In the 1930s, [[Maria Tonelli-Rondelli]] proposed that the morphological variation within the species indicated that it was a complex, while in the 1950s this variation was proposed to be due to normal variation between individuals of one species. Molecular biological analyses have indicated that ''A. cajennense'' is a complex of species.<ref name="Troyo-et-al-2022">{{cite journal |last1=Troyo |first1=Adriana |last2=González-Sequeira |first2=María Paula |last3=Aguirre-Salazar |first3=Mónica |last4=Cambronero-Ortíz |first4=Ian |last5=Chaves-González |first5=Luis Enrique |last6=Mejías-Alpízar |first6=María José |last7=Alvarado-Molina |first7=Kendall |last8=Calderón-Arguedas |first8=Ólger |last9=Rojas-Araya |first9=Diana |title=Acknowledging extraordinary women in the history of medical entomology |journal=Parasites and Vectors |date=2022 |volume=14 |page=114 |doi=10.1186/s13071-022-05234-6 |pmid=35361284 |doi-access=free }}</ref>


A 2014 study<ref name="Navaetal2014">Santiago Nava, Lorenza Beati, Marcelo B. Labruna, Abraham G. Cáceres, Atilio J. Mangolda and Alberto A. Guglielmone. 2014. Reassessment of the taxonomic status of ''Amblyomma cajennense'' (Fabricius, 1787) with the description of three new species, ''Amblyomma tonelliae'' n. sp., ''Amblyomma interandinum'' n. sp. and ''Amblyomma patinoi'' n. sp., and reinstatement of ''Amblyomma mixtum'' Koch, 1844, and ''Amblyomma sculptum'' Berlese, 1888 (Ixodida: Ixodidae). ''Ticks and Tick-borne Diseases'', Volume 5, Issue 3, April 2014, pp. 252-276; https://doi.org/10.1016/j.ttbdis.2013.11.004, as accessed 22 Sep 2020.</ref> asserts that ''Amblyomma cajennense'' [[sensu stricto|s.s.]] is found only in the Amazonian region of South America, whereas the species reported from the northern part of the Inter-Andean valley of Peru is ''[[Amblyomma interandinum|A. interandinum]]'', the species present from [[Texas]] to western Ecuador is ''A. mixtum'', the species that occurs in the Eastern Cordillera of Colombia is ''[[Amblyomma patinoi|A. patinoi]]'', the species associated with the dry areas of the Chaco region spanning from central-northern [[Argentina]] to [[Bolivia]] and [[Paraguay]] is ''[[Amblyomma tonelliae|A. tonelliae]]'', and the species distributed from the humid areas of northern Argentina to the contiguous regions of Bolivia and Paraguay and the coastal and central-western states of [[Brazil]] is ''A. sculptum''.
A 2014 study<ref name="Navaetal2014">Santiago Nava, Lorenza Beati, Marcelo B. Labruna, Abraham G. Cáceres, Atilio J. Mangolda and Alberto A. Guglielmone. 2014. Reassessment of the taxonomic status of ''Amblyomma cajennense'' (Fabricius, 1787) with the description of three new species, ''Amblyomma tonelliae'' n. sp., ''Amblyomma interandinum'' n. sp. and ''Amblyomma patinoi'' n. sp., and reinstatement of ''Amblyomma mixtum'' Koch, 1844, and ''Amblyomma sculptum'' Berlese, 1888 (Ixodida: Ixodidae). ''Ticks and Tick-borne Diseases'', Volume 5, Issue 3, April 2014, pp. 252-276; https://doi.org/10.1016/j.ttbdis.2013.11.004, as accessed 22 Sep 2020.</ref> asserts that ''Amblyomma cajennense'' [[sensu stricto|s.s.]] is found only in the Amazonian region of South America, whereas the species reported from the northern part of the Inter-Andean valley of Peru is ''[[Amblyomma interandinum|A. interandinum]]'', the species present from [[Texas]] to western Ecuador is ''A. mixtum'', the species that occurs in the Eastern Cordillera of Colombia is ''[[Amblyomma patinoi|A. patinoi]]'', the species associated with the dry areas of the Chaco region spanning from central-northern [[Argentina]] to [[Bolivia]] and [[Paraguay]] is ''[[Amblyomma tonelliae|A. tonelliae]]'', and the species distributed from the humid areas of northern Argentina to the contiguous regions of Bolivia and Paraguay and the coastal and central-western states of [[Brazil]] is ''A. sculptum''.

Revision as of 04:22, 25 November 2023

Amblyomma cajennense
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Arthropoda
Subphylum: Chelicerata
Class: Arachnida
Order: Ixodida
Family: Ixodidae
Genus: Amblyomma
Species:
A. cajennense
Binomial name
Amblyomma cajennense
(Fabricius, 1787)

Amblyomma cajennense or Cayenne tick is a species of tick found in a range from the southern part of the United States to northern Argentina, through Central America and some of the Caribbean. As a consequence, the species has adapted to a wide range of environmental conditions. There are also major geographic barriers such as large rivers and the Andes mountain range.[1]

There has been debate over whether A. cajennense is a single species or whether it is a complex of species. In the 1930s, Maria Tonelli-Rondelli proposed that the morphological variation within the species indicated that it was a complex, while in the 1950s this variation was proposed to be due to normal variation between individuals of one species. Molecular biological analyses have indicated that A. cajennense is a complex of species.[2]

A 2014 study[3] asserts that Amblyomma cajennense s.s. is found only in the Amazonian region of South America, whereas the species reported from the northern part of the Inter-Andean valley of Peru is A. interandinum, the species present from Texas to western Ecuador is A. mixtum, the species that occurs in the Eastern Cordillera of Colombia is A. patinoi, the species associated with the dry areas of the Chaco region spanning from central-northern Argentina to Bolivia and Paraguay is A. tonelliae, and the species distributed from the humid areas of northern Argentina to the contiguous regions of Bolivia and Paraguay and the coastal and central-western states of Brazil is A. sculptum.

Medical Significance

A. cajenennense can transmit Rocky Mountain spotted fever.[4] It affects humans and their domestic cattle.

In August 2009, Brazilian researchers announced that a protein called Factor X active found in the saliva of the tick proved effective in stopping the growth of certain cancer cells in laboratory mice.[5]

References

  1. ^ Estrada-Peña, A.; Guglielmone, A. A.; Mangold, A. J. (2004). "The distribution and ecological 'preferences' of the tick Amblyomma cajennense (Acari: Ixodidae), an ectoparasite of humans and other mammals in the Americas". Ann Trop Med Parasitol. 98 (3): 283–292. doi:10.1179/000349804225003316. PMID 15119974. S2CID 19387385.
  2. ^ Troyo, Adriana; González-Sequeira, María Paula; Aguirre-Salazar, Mónica; Cambronero-Ortíz, Ian; Chaves-González, Luis Enrique; Mejías-Alpízar, María José; Alvarado-Molina, Kendall; Calderón-Arguedas, Ólger; Rojas-Araya, Diana (2022). "Acknowledging extraordinary women in the history of medical entomology". Parasites and Vectors. 14: 114. doi:10.1186/s13071-022-05234-6. PMID 35361284.
  3. ^ Santiago Nava, Lorenza Beati, Marcelo B. Labruna, Abraham G. Cáceres, Atilio J. Mangolda and Alberto A. Guglielmone. 2014. Reassessment of the taxonomic status of Amblyomma cajennense (Fabricius, 1787) with the description of three new species, Amblyomma tonelliae n. sp., Amblyomma interandinum n. sp. and Amblyomma patinoi n. sp., and reinstatement of Amblyomma mixtum Koch, 1844, and Amblyomma sculptum Berlese, 1888 (Ixodida: Ixodidae). Ticks and Tick-borne Diseases, Volume 5, Issue 3, April 2014, pp. 252-276; https://doi.org/10.1016/j.ttbdis.2013.11.004, as accessed 22 Sep 2020.
  4. ^ "CDC - Rocky Mountain Spotted Fever: Questions and Answers | Tickborne Rickettsial Diseases". 2018-08-06. Archived from the original on 29 April 2010. Retrieved 2010-04-17.
  5. ^ "Ticks Spit Could Help Fight Cancer" redOrbit.com


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