A NEW SPECIES OF ORNITHODOROS (IXODIDA: ARGASIDAE) FROM SINALOA, MEXICO

Jose Hernández-Martínez; Edwin Vázquez-Guerrero; Pablo Espinoza-Carbullanca; José Antonio Ibarra-García; Sebastián Muñoz Leal

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Trabalho

Título do Trabalho

A NEW SPECIES OF ORNITHODOROS (IXODIDA: ARGASIDAE) FROM SINALOA, MEXICO

Autores

Jose Hernández-Martínez
Edwin Vázquez-Guerrero
Pablo Espinoza-Carbullanca
José Antonio Ibarra-García
Sebastián Muñoz Leal

Modalidade

Resumo

Área temática

Entomologia e acarologia

Data de Publicação

24/09/2026

País da Publicação

Brasil

Idioma da Publicação

pt-BR

Página do Trabalho

https://www.even3.com.br/anais/23-congresso-brasileiro-de-parasitologia-veterinaria-673729/1547986-a-new-species-of-ornithodoros-(ixodida--argasidae)-from-sinaloa-mexico

ISBN

978-65-272-2733-5

Palavras-Chave

soft ticks, Neotropical Zoogeographical Region, Ornithodoros talaje group

Resumo

Ticks are a diverse group of strictly hematophagous arthropods that parasitize all terrestrial classes of vertebrates. Soft ticks (Argasidae) comprise approximately 220 species. In Mexico, 24 species of Ornithodoros (Argasidae) have been recorded. In the present study, we report a new species belonging to the Ornithodoros talaje group, which is widely distributed throughout the Neotropical region. During surveys for vectors of relapsing fever group spirochetes, two females similar to O. talaje were collected inside a rodent burrow at El Fuerte, Sinaloa, Mexico. Both females were fed on mice and layed eggs. Ten unfed larvae were cleared in 25% KOH, washed with distilled water, and mounted on slides in Hoyer’s medium. Larvae were photographed with optical microscope (Euromex, Netherlands) and measured with ImageFocus Plus v2 software. One pool of 5 larvae was submitted to a PCR targetting the tick mitochondrial 16S rRNA gene with primers 16s+1 (5´-CTGCTCAATGATTTTTTAAATTGC-3´) and 16s-1 (5´-CCGGTCTGAACTCAGATCATGTA-3´). PCR products (475 bp) visualized in 1% agarose gel were subjected to bidirectional sequencing. Consensus sequences were compared in GenBank using BLASTn. A maximum likelihood phylogenetic analysis was performed using IQ-TREE v2.4.0 under the optimal nucleotide substitution model selected with ModelFinder. The larval stage of this novel species exhibits a body subcircular, pyriform dorsal plate, 18 pairs of dorsal setae (7 anterolateral, 5 central, 6 posterolateral), hypostome with denticles arising from the base and pointed apically, dentition formula 3/3 in the apical third, then 2/2 to base, file one, two and three with 21–22, 19–20, and 9–10 denticles, respectively. The female has cheeks, large mammillae, posterolateral margins of body of three mammillae wide, and posteromedian line of disks merged with the median disk. A phylogenetic analysis further supports that the Ornithodoros sp., branches basally within the O. talaje group clade.

Título do Evento: 23º Congresso Brasileiro de Parasitologia Veterinária
Cidade do Evento: Belo Horizonte
Título dos Anais do Evento: Anais do XXIII Congresso Brasileiro de Parasitologia Veterinária
Nome da Editora: Even3
Meio de Divulgação: Meio Digital

Como citar

HERNÁNDEZ-MARTÍNEZ, Jose et al.. A NEW SPECIES OF ORNITHODOROS (IXODIDA: ARGASIDAE) FROM SINALOA, MEXICO.. In: Anais do XXIII Congresso Brasileiro de Parasitologia Veterinária. Anais...Belo Horizonte(MG) Centro de Atividades Didáticas I (CAD 1) da Universidade Federal de Minas Gerais (UFMG), 2026. Disponível em: https//www.even3.com.br/anais/23-congresso-brasileiro-de-parasitologia-veterinaria-673729/1547986-A-NEW-SPECIES-OF-ORNITHODOROS-(IXODIDA--ARGASIDAE)-FROM-SINALOA-MEXICO. Acesso em: 16/10/2026