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9 December 2024 Drivers of behavior in two tick species, Amblyomma americanum and Amblyomma maculatum (Acari: Ixodidae), in a laboratory setting
Afsoon Sabet, Meg Kilgore, Jerome Goddard, Samuel F. Ward
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Abstract

Ticks and tick-borne diseases are of increasing concern in the United States, and understanding tick behavior could be crucial to limiting the exposure of humans and other animals to ticks. Here, we wanted to understand the drivers of questing and burrowing in Amblyomma americanum and A. maculatum. We used a factorial design to assess the effects of substrate (sand, soil, and rock), temperature (16° and 22° C), tick species (A. maculatum and A. americanum), and competition (homogenous or heterogenous mixture of ticks in the arena) on tick behavior in laboratory arenas. Questing varied significantly between tick species, with 61% of A. americanum questing compared to 35% of A. maculatum. Substrate similarly affected questing, with most ticks questing in the arenas with sand (83%) compared to arenas with rock (35%) or soil (25%). Burrowing behavior was also influenced by substrate; every tick in the arenas with rock (100%) and nearly all in the arenas with soil (98%) exhibited burrowing, whereas only 10% burrowed in sand. A. americanum traveled longer distances than A. maculatum (23 ± 2.8 cm vs 9.7 ± 2.3 cm). The disparity in laboratory behavior between sand and rock/soil substrates might warrant further consideration in a field setting, as understanding factors that inhibit host-seeking behaviors of ticks can inform management of public spaces and potentially help mitigate tick-exposure.

Afsoon Sabet, Meg Kilgore, Jerome Goddard, and Samuel F. Ward "Drivers of behavior in two tick species, Amblyomma americanum and Amblyomma maculatum (Acari: Ixodidae), in a laboratory setting," Journal of Vector Ecology 50(1), 14-22, (9 December 2024). https://doi.org/10.52707/1081-1710-50-1-14
Received: 1 June 2024; Accepted: 5 September 2024; Published: 9 December 2024
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KEYWORDS
Amblyomma americanum
Amblyomma maculatum
Gulf Coast tick
host-seeking
lone star tick
tick behavior
tick movement
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