New records and phylogenetic position of Ornithodoros knoxjonesi (Ixodida: Argasidae)
Por:
Guzman-Cornejo, Carmen, Rebollo-Hernandez, Andrea, Troyo, Adriana, Moreira-Soto, Rolando D., Hernandez, V, Ligia, Munoz-Leal, Sebastian, Labruna, Marcelo B., Nava, Santiago, Venzal, Jose M.
Publicada:
1 sep 2020
Resumen:
Larvae of Ornithodoros knoxjonesi collected at five localities in three
countries were studied using morphological and molecular methods to
confirm this species' taxonomic validity. The larva of O. knoxjonesi is
characterized as having 14 pairs of dorsal setae, eight pairs of ventral
setae, plus a posteromedian seta; an elongate dorsal plate, tapered
anteriorly; and a hypostome that is narrower near its midlength, with
posteriorly projecting denticles. Although the larvae of O. knoxjonesi
and Ornithodoros peropteryx are morphologically quite similar, the larva
of O. knoxjonesi is characterized as having dorsal setae that are wider
at the tip than at the base, while in O. peropteryx these setae are
narrower at the tip than at the base; moreover, the dorsal setae are
shorter in O. knoxjonesi (Al 0.037-0.065; Pl 0.035-0.059) than in O.
peropteryx (Al 0.120-0.132; Pl 0.080-0.096). These species also differ
in that O. knoxjonesi possesses only the Al seta on tarsus I, whereas O.
peropteryx has both Al and Pl setae. And while both species have two
setae on coxae I-III, in O. knoxjonesi the anterior seta is tapering and
smooth and the posterior is fringed, while both setae are fringed in O.
peropteryx. At the molecular level, based on a maximum likelihood
analysis using approximately 400 bp of the mitochondrial 16S rDNA gene,
O. knoxjonesi appears as an independent lineage, separated from O.
peropteryx by a genetic distance of 16.28 %. Balantiopteryx plicata is
a common host of O. knoxjonesi; however, in this work we report
Pteronotus personatus and Pteronotus gymnonotus as new hosts of this
tick species.
Filiaciones:
Univ Nacl Autonoma Mexico, Fac Ciencias, Dept Biol Comparada, Lab Acarol, Mexico City, DF, Mexico
Univ Costa Rica, Fac Microbiol, Ctr Invest Enfermedades Trop CIET, Lab Invest Vectores LIVE, San Jose, Costa Rica
Univ Sao Paulo, Fac Med Vet & Zootecnia, Av Prof Dr Orlando Marques Paiva 87, Sao Paulo, SP, Brazil
Inst Nacl Tecnol Agr, Estn Expt Agr Rafaela, CC 22, RA-2300 Rafaela, SF, Argentina
Univ Republ, Fac Vet, Lab Vectores & Enfermedades Transmitidas, CENUR Litoral Norte Salto, Rivera 1350, Salto 50000, ST, Uruguay
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