Abstract
One generation of Amblyomma coelebs life cycle under experimental conditions was evaluated. Ten tick pairs were allowed to feed on rabbits under laboratory conditions (LC), resulting six engorged females with a mean weight of 1,403.9 mg. Two females were maintained in a forest reserve under natural conditions (NC), and four were maintained in incubators (LC). The engorgement period lasted 10.33 days. Pre-oviposition periods were 10.75 (NC) and 22 days (LC). The mean egg-mass weight was 514.76 mg, and the blood meal conversion index was 36.67% (LC). Incubation period under NC and LC were 91 and 56.33 days and hatching rates were 50% and 28.33%, respectively. Larval engorgement period ranged from 4 to 10 days, with average weight of 1.1 mg. Engorged larvae were incubated under NC and LC, with a premolt period of 27 to 36 days and molting rate of 7.1% and 28.7%, respectively. Nymphal engorgement period ranged from 5 to 7 days, with a mean weight of 18.8 mg and a recovery rate of 54.54%. In LC, the ecdysis mean period was 24.5 days, and molting rate was 44.44%, resulting in 24 adult A. coelebs. Our results show a life cycle of 187.45 (NC) and 149 (LC) days.
Highlights
Amblyomma coelebs Neumann is one of the 71 species composing the Brazilian tick fauna, which included 46 species from the Ixodidae family and 25 from the Argasidae family (KRAWCZAK et al, 2015; LABRUNA et al, 2016; WOLF et al.; 2016; MUÑOZ‐LEAL et al, 2017)
In Brazil, it has been reported to occur in the states of São Paulo, Minas Gerais, Mato Grosso do Sul, Paraná, Rondônia, Acre, Mato Grosso, Roraima, Pará and Espírito Santo (GUIMARÃES et al, 2001; LABRUNA et al, 2002b, 2004b; ARZUA et al, 2005; SARAIVA et al, 2012)
The biological parameters measured in A. coelebs are presented in Tables 1, 2 and 3
Summary
Amblyomma coelebs Neumann is one of the 71 species composing the Brazilian tick fauna, which included 46 species from the Ixodidae family and 25 from the Argasidae family (KRAWCZAK et al, 2015; LABRUNA et al, 2016; WOLF et al.; 2016; MUÑOZ‐LEAL et al, 2017). In Brazil, it has been reported to occur in the states of São Paulo, Minas Gerais, Mato Grosso do Sul, Paraná, Rondônia, Acre, Mato Grosso, Roraima, Pará and Espírito Santo (GUIMARÃES et al, 2001; LABRUNA et al, 2002b, 2004b; ARZUA et al, 2005; SARAIVA et al, 2012) Adults of this species prefer parasitizing tapirs (Tapirus terrestris) (LABRUNA & GUGLIELMONE, 2009; GUGLIELMONE et al, 2014) but can be found parasitizing equines (BELDOMÉNICO et al, 2003). Nymphs appear to be more generalists and exploit a larger host range that includes carnivores, marsupials, rodents, birds and, occasionally, humans (BELDOMÉNICO et al, 2003; SPONCHIADO et al, 2015; GARCIA et al, 2015; OGRZEWALSKA & PINTER, 2016; OGRZEWALSKA et al, 2009; 2010; ITO et al, 2017)
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