NDLI: Redescription of Amblyomma varium Koch, 1844 (Acari: Ixodidae) based on light and scanning electron microscopy

Content Provider	Springer Nature Link
Author	Ofrio, Valeria Castilho Barros Battesti, Darci Moraes Marques, Sandro Faccini, João Luiz Horácio Labruna, Marcelo Bahia Beati, Lorenza Guglielmone, Alberto Alejandro
Copyright Year	2007
Abstract	Amblyomma varium Koch, 1844 is a Neotropical tick, known as the ‘sloth’s giant tick’, with records from southern Central America to Argentina. It is found almost exclusively on mammals of the families Bradypodidae and Magalonychidae (Xenarthra). Differences exist in discussions with regard to the dentition of the female hypostome being either 3/3 or 4/4. The male was also originally described as having a short spur on coxa IV, but some specimens recently collected from different Brazilian localities have this spur three times longer. These differences beg the question of whether there is more than one species included under this taxon. In order to answer this question and to clarify the taxonomic characters of this species, 258 adult specimens were examined, and a redescription of male and female based on light and scanning electron microscopy is provided. In addition, DNA was extracted from males with either a long or a short spur on coxa IV to help settle this question for future investigations on their taxonomy. The morphological study showed that the dental formula pattern for males and females is 3/3 and 4/4, respectively. When sequenced, the 12 S rDNA genes of both A. varium males with long and short spurs on coxa IV were found to be identical, indicating that the length of the spurs on coxa IV is likely to be an intraspecifically polymorphic character of this species.
Starting Page	137
Ending Page	144
Page Count	8
File Format	PDF
ISSN	01655752
Journal	Systematic Parasitology
Volume Number	69
Issue Number	2
e-ISSN	15735192
Language	English
Publisher	Springer Netherlands
Publisher Date	2007-11-24
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Life Sciences Animal Ecology Agriculture Animal Anatomy Morphology Histology Animal Systematics/Taxonomy/Biogeography Zoology
Content Type	Text
Resource Type	Article
Subject	Parasitology

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