Haller's organ is a group of chemosensitive cells concentrated on the tarsus of the forelegs, which ticks wave in front of them as with insect antennae in an alternating up and down fashion, rather than using them for walking. [3]

2017年7月18日 · Ticks have a unique sensory structure located exclusively on the 1st pairs of legs; the fore-tarsal Haller's organ, not found in any other animals, presumed to function like the insect antennae in chemosensation but morphologically very different. The mechanism of tick chemoreception is unknown.

Ticks have a unique sensory structure located exclusively on the 1st pairs of legs; the fore-tarsal Haller’s organ, not found in any other animals, presumed to function like the insect antennae in chemosensation but morphologically very different. The mechanism of …

A sensory pit called Haller’s organ contains sensory setae and is found on the tarsal segment of the first pair of legs of all ticks (Ixodida). One to three pairs of eyes are present on the anterior of the idiosoma in Opilioacariformes, a few Astigmata, and many Ixodida and…

2025年2月28日 · Environmental scanning electron microscopy reveals detailed close-ups of the Haller’s organs of three tick species: Ixodes scapularis (Is), Amblyomma americanum (Aa), and Dermacentor variabilis (Dv).

2019年8月23日 · We show that Amblyomma americanum and Dermacentor variabilis ticks can locate a human from several meters away by radiant heat sensed by the part of Haller’s organ known as the capsule, a covered spherical pit organ.

Haller's organ on the tarsus of the tick Amblyomma americanum (L.) (Acarina: Ixodidae; nymphal stage) was studied by scanning and transmission electron microscopy. It consists of a distal bristle group, (the “anterior pit”), and a proximal “capsule” which encloses several sensilla.

3 天之前 · Our findings revealed Haller’s organ is the key sensory organ for tick sensing of cinnamaldehyde. We reveal an ionotropic receptor in ticks that specifically detects cinnamaldehyde, triggering repellent responses through Haller’s organs, and elucidated its binding site. A comprehensive understanding of this process is imperative for ...

The structure of Haller's organ in all major groups of soft ticks, family Argasidae, is reexamined, and hypotheses of setal homology are proposed based on a comparative study of developmental patterns.

Ticks have a unique sensory structure located exclusively on the 1st pairs of legs; the fore-tarsal Haller's organ, not found in any other animals, presumed to function like the insect antennae in chemosensation but morphologically very different. The mechanism of …