Ecological implications on the aggregation of Amblyomma fuscum (Acari: Ixodidae) on Thrichomys laurentius (Rodentia: Echimyidae), in northeastern Brazil.

Experimental & Applied Acarology
Filipe Martins AléssioJean-François Mauffrey

Abstract

We investigated the Amblyomma fuscum load on a pullulating wild rodent population and the environmental and biological factors influencing the tick load on the hosts. One hundred and three individuals of Thrichomys laurentius were caught in an Atlantic forest fragment in northeastern Brazil, as part of a longitudinal survey on ticks infesting non-volant small mammals. Ticks (n = 342) were found on 45 individuals and the overall mean intensity of infestation was 7.6 ticks per infested rodent. Ticks were highly aggregated in the host population and the negative binomial distribution model provides a statistically satisfactory fit. The aggregated distribution was influenced by sex and age of the host. The microhabitat preference by T. laurentius probably increases contact opportunities between hosts and aggregated infesting stages of the ticks and represents important clues about the habitat suitability for A. fuscum.

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Citations

Jan 29, 2014·Experimental & Applied Acarology·Valeria N DebárboraSantiago Nava
Nov 28, 2018·Genome Génome / Conseil National De Recherches Canada·Naiara Pereira AraújoMarta Svartman
Dec 17, 2021·Experimental & Applied Acarology·Filipe Dantas-TorresFelipe Arley Costa Pessoa

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