Sloth’s giant tick (Amblyomma varium) parasitizing free-ranging maned sloth (Bradypus torquatus) in the Atlantic Forest biome, Brazil.

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Keywords

Amblyomma, Bradypus torquatus, giant tick, parasite, sloth.

How to Cite

Bernardes, F. C. S., Martins, T. F., Ferreira, S. S., Rosa , B. F., Ruiz-Miranda, C. R. ., Giné , . G. A. F., … Miranda, F. R. (2022). Sloth’s giant tick (Amblyomma varium) parasitizing free-ranging maned sloth (Bradypus torquatus) in the Atlantic Forest biome, Brazil. Brazilian Journal of Veterinary Medicine, 44, e004021. https://doi.org/10.29374/2527-2179.bjvm004021

Abstract

Amblyomma varium is a neotropical tick popularly known as the sloth’s giant tick, during the adult stage is found almost exclusively on mammals of the Bradypodidae and Megalonychidae families of the superorder Xenarthra. The maned sloth (Bradypus torquatus) is the only sloth species in danger of extinction in Brazil. This species is arboreal and descends to the ground only to perform defecation behavior. This behavior can be the determining factor for infestation and infection by different parasitic agents, including A. varium. This study reported the occurrence of A. varium found parasitizing free-living maned sloths (B. torquatus) in the Atlantic Forest biome of Northeast and Southeast Brazil. A total of 36 individuals were evaluated and more than 50% of the individuals were parasitized by ticks of the species A. varium. This study confirmed the importance of B. torquatus as a host for adults and nymphs of A. varium and reported the variation in length of the spurs on coxa IV of A. varium males.

https://doi.org/10.29374/2527-2179.bjvm004021
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References

Acosta, I. C. L., Martins, T. F., Marcili, A., Soares, H. S., Krawczak, F. S., Vieira, F. T., & Labruna, M. B. (2016). Ticks (Acari: Ixodidae, Argasidae) from humans, domestic, and wild animals in the State of Espírito Santo, Brazil, with notes on rickettsial infection. Veterinary Parasitology. Regional Studies and Reports, 3-4, 66-69. http://dx.doi.org/10.1016/j.vprsr.2016.08.001. PMid:31014503.

Amorim, M., & Serra-Freire, N. M. (1996). Morphological description of tick larval stage (Acari: Ixodidae). 3. Amblyomma varius [sic] Kock [sic], 1844. Entomología y Vectores, 3, 67-80.

Aragão, H. B., & Fonseca, F. (1961). Notas de ixodologia: VIII. Lista e chave para os representantes da fauna ixodológica brasileira. Memorias do Instituto Oswaldo Cruz, 59, 115-149. http://dx.doi.org/10.1590/S0074-02761961000200001. PMid:13861962.

Barros-Battesti D.M., Arzua M., & Bechara G.H. (2006). Carrapatos de importância médico-veterinária da região neotropical: um guia ilustrado para identificação de espécies. Vox/ICTTD-3/Butantan.

Chiarello, A. G. (1998). Diet of the Atlantic Forest maned sloth Bradypus torquatus (Xenarthra: Bradypodidae). Journal of Zoology, 246(1), 11-19. http://dx.doi.org/10.1111/j.1469-7998.1998.tb00127.x.

Chiarello, A. G., Miranda, F. R., Xavier, G. A. A., Moraes-Barros, N., & Vaz, S. M. (2015). Avaliação do risco de extinção de Bradypus torquatus Illiger, 1811. In F. Miranda, A. G. Chiarello, F. Rohe & G. Mourão (Eds.), Avaliação do Risco de Extinção dos Xenartros Brasileiros (pp. 13-22). ICMBio. https://www.researchgate.net/ publication/283644973_Avaliacao_do_Risco_de_Extincao_de_Bradypus_tridactylus-_Linneu_1758_no_Brasil

Chiarello, A. G., Miranda, F. R., Xavier, G. A. A., Moraes-Barros, N., & Vaz, S. M. (2018). Bradypus torquatus. In Instituto Chico Mendes de Conservação da Biodiversidade (Org.), Livro Vermelho da Fauna Brasileira Ameaçada de Extinção: Volume II – Mamíferos (1st ed., pp. 34-40). ICMBio/MMA.

Chiarello, A., & Moraes-Barros, N. (2014). Bradypus torquatus. The IUCN Red List of Threatened Species 2014. https://www.iucnredlist.org.

Gilmore, D. P., Da-Costa, C. P., & Duarte, D. P. F. (2000). An update on the physiology of two-and three-toed sloths. Brazilian Journal of Medical and Biological Research, 33(2), 129-146. http://dx.doi.org/10.1590/S0100-879X2000000200001. PMid:10657054.

Gruhn, K. D., Ogrzewalska, M., Rozental, T., Farikoski, I. O., Blanco, C., Freitas, L. S., Lemos, E. R. S., & Ribeiro, V. M. F. (2019). Evaluation of rickettsial infection in free-range capybaras (Hydrochoerus hydrochaeris Linnaeus, 1766 [sic]) (Rodentia: Caviidae) and ticks (Acari: Ixodidae) in the Western Amazon, Brazil. Ticks and Tick-Borne Diseases, 10(5), 981-986. http://dx.doi.org/10.1016/j.ttbdis.2019.04.007. PMid:31109835.

Guimarães, J. H. (2001). Ectoparasitos de importância veterinária. Plêiade/Fapesp.

Koch, C. L. (1844). Systematische übersicht über die Ordnung der Zecken. Archiv für Naturgeschichte, 10, 217-239. http://dx.doi.org/10.5962/bhl.part.29560.

Lara-Ruiz, P., & Chiarello, A. G. (2005). Life-history traits and sexual dimorphism of the Atlantic Forest maned sloth Bradypus torquatus (Xenarthra: Bradypodidae). Journal of Zoology, 267(1), 63-73. http://dx.doi.org/10.1017/S0952836905007259.

Marques, S., Barros-Battesti, D. M., Faccini, J. L. H., & Onofrio, V. C. (2002). Brazilian distribution of Amblyomma varium Koch, 1844 (Acari: Ixodidae), a common parasite of sloths (Mammalia: Xenarthra). Memorias do Instituto Oswaldo Cruz, 97(8), 1141-1146. http://dx.doi.org/10.1590/S0074-02762002000800014. PMid:12563481.

Martins, T. F., Onofrio, V. C., Barros-Battesti, D. M., & Labruna, M. B. (2010). Nymphs of the genus Amblyomma (Acari: Ixodidae) of Brazil: descriptions, redescriptions, and identification key. Ticks and Tick-Borne Diseases, 1(2), 75-99. http://dx.doi.org/10.1016/j.ttbdis.2010.03.002. PMid:21771514.

Neumann, G. (1899). Révision de la famille des ixodidés. Mémoires de la Société Zoologique de France, 12, 107-294.

Onofrio, V. C., Barros-Battesti, D. M., Marques, S., Faccini, J. L. H., Labruna, M. B., Beati, L., & Guglielmone, A. A. (2008). Redescription of Amblyomma varium Koch, 1844 (Acari: Ixodidae) based on light and scanning electron microscopy. Systematic Parasitology, 69(2), 137-144. http://dx.doi.org/10.1007/s11230-007-9128-0. PMid:18038200.

Pedersen, A. B., Jones, K. E., Nunn, C. L., & Altizer, S. (2007). Infectious diseases and extinction risk in wild mammals. Conservation Biology, 21(5), 1269-1279. http://dx.doi.org/10.1111/j.1523-1739.2007.00776.x. PMid:17883492.

Pinto, C. J. C., Grisard, E. C., & Ishida, M. M. I. (2011). Parasitologia. CCB/EAD/UFSC.

Rezende C.L., Scarano F.R., Assad E.D., Joly C.A., Metzger J.P., Strassburg B.B.N., Tabarelli M., Fonseca G.A., & Mittermeier R.A. (2018). From hotspot to hopespot: An opportunity for the Brazilian Atlantic Forest. Perspectives in Ecology and Conservation, 16(4), 208-214. https://doi.org/10.1016/j.pecon.2018.10.002

Sanches, G. S., André, M. R., Prado, A. P., Allegretti, S. M., Remedio, R. N., Nunes, P. H., Machado, R. Z., Bechara, G. H., & Camargo-Mathias, M. I. (2014). Oocyte maturation in the sloth’s giant tick Amblyomma varium (Acari: Ixodidae) in an ecological context. Experimental & Applied Acarology, 64(4), 519-531. http://dx.doi.org/10.1007/s10493-014-9837-4. PMid:25037744.

Voirin, B., Kays, R., Wikelski, M., & Lowman, M. (2013). Why do sloths poop on the ground? In: Lowman, M., Devy, S. & T. Ganesh (Eds.), Treetops at Risk (pp. 195-199). Springer. http://dx.doi.org/10.1007/978-1-4614-7161-5_19.

Witter, R., Martins, T. F., Campos, A. K., Melo, A. L. T., Correa, S. H. R., Morgado, T. O., Wolf, R. W., May-Júnior, J. A., Sinkoc, A. L., Strussmann, C., Aguiar, D. M., Rossi, R. V., Semedo, T. B. F., Campos, Z., Desbiez, A. L. J., Labruna, M. B., & Pacheco, R. C. (2016). Rickettsial infection in ticks (Acari: Ixodidae) of wild animals in midwestern Brazil. Ticks and Tick-Borne Diseases, 7(3), 415-423. http://dx.doi.org/10.1016/j.ttbdis.2015.12.019. PMid:26775021.

Woodroffe, R. (1999). Managing disease threats to wild mammals. Animal Conservation, 2(3), 185-193. http://dx.doi.org/10.1111/j.1469-1795.1999.tb00064.x.

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Copyright (c) 2022 Fernanda Coelho Simas Bernardes, Thiago Fernandes Martins, Suelen Sanches Ferreira, Beatris Felipe Rosa , Carlos Ramón Ruiz-Miranda, Gastón Andrés Fernandez Giné , Flávio Landim Soffiati , Flávia Regina Miranda