New records on autogenic behavior among populations of Ornithodoros fonsecai (Labruna and Venzal, 2009) (Ixodida: Argasidae) from northeastern Brazil

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Castro-Santiago, Ana Carolina ; Lima-Duarte, Leidiane ; Camargo, Jaqueline Valeria ; Simons, Simone Michaela ; Bassini-Silva, Ricardo ; Calchi, Ana Claudia ; de Oliveira, Glauber Meneses Barboza ; Horta, Mauricio Claudio ; Munoz-Leal, Sebastian ; Labruna, Marcelo Bahia ; Andre, Marcos Rogerio ; Machado, Rosangela Zacarias ; Barros-Battesti, Darci Moraes

• Document type: Journal article
• Source: VETERINARY RESEARCH COMMUNICATIONS; v. 49, n. 2, p. 9-pg., 2025-04-01.

Abstract

Ornithodoros fonsecai is an argasid tick that is endemic to Brazil. The autogeny (the oviposition without a blood meal) can be facultative or obligatory in female ticks of the family Argasidae. The present study reports new records on the facultative autogeny among populations of O. fonsecai from the states of Cear & aacute; and Pernambuco, northeast Brazil. The specimens obtained were fed on rabbits and kept in a biological oxygen demand (BOD) at 25 degrees C +/- 1 degrees C. All females obtained from both populations emerged from nymphs of third instar (N3) were autogenic, which were fed once before molting. Approximately 183 eggs were observed between 22 and 29 days (oviposition period), with a hatching rate of larvae of 52%, from two females of Cear & aacute;, and around 367 eggs between 20 and 35 days, with 92% of hatching of larvae, from three females of Pernambuco. Previously, this behavior has already been registered only in a population in the municipality of Nobres, state of Mato Grosso, Brazil. Thus, the present study reports facultative autogeny in females of O. fonsecai among populations from the states of Cear & aacute; and Pernambuco in northeastern Brazil. (AU)

• FAPESP's process: 20/11755-6 - Taxonomy and microbiome of mites that parasitize bats in Brazil: study of the presence of pathogens and symbiotic commensal communities in these ectoparasites
• Grantee: Ricardo Bassini Silva
• Support Opportunities: Scholarships in Brazil - Post-Doctoral
• FAPESP's process: 23/07786-1 - Standardization of primary cultures of Argasid tick embryonic cells and microbiome studies
• Grantee: Darci Moraes Barros-Battesti
• Support Opportunities: Regular Research Grants
• FAPESP's process: 21/06758-9 - Characterization of tick cell lines and their use as a substrate for the growth, maintenance and protein expression profile of Anaplasma marginale
• Grantee: Ana Carolina Castro Santiago
• Support Opportunities: Scholarships in Brazil - Doctorate
• FAPESP's process: 20/07826-5 - Diversity of piroplasmids in wild mammals and birds from Brazil
• Grantee: Ana Cláudia Calchi
• Support Opportunities: Scholarships in Brazil - Doctorate
• FAPESP's process: 22/05615-2 - Unravelling the relationship between Bartonella spp. and arthropod-vectors by omics approaches and tick cell lines culture
• Grantee: Marcos Rogério André
• Support Opportunities: Research Projects - Thematic Grants