期刊
JOURNAL OF EXPERIMENTAL BIOLOGY
卷 220, 期 5, 页码 885-890出版社
COMPANY OF BIOLOGISTS LTD
DOI: 10.1242/jeb.149823
关键词
Amblypygid; Arthropod; Navigation; Olfaction; Radio telemetry
类别
资金
- National Geographic Society [9400-13]
- National Science Foundation [IOS-1457304]
- Direct For Biological Sciences
- Division Of Integrative Organismal Systems [1457304] Funding Source: National Science Foundation
- Division Of Integrative Organismal Systems
- Direct For Biological Sciences [1456817] Funding Source: National Science Foundation
Amblypygids, or whip spiders, are nocturnal, predatory arthropods that display a robust ability to navigate to their home refuge. Prior field observations and displacement studies in amblypygids demonstrated an ability to home from distances as far away as 10 m. In the current study, micro- transmitters were used to take morning position fixes of individual Paraphrynus laevifrons following an experimental displacement of 10 m from their home refuge. The intention was to assess the relative importance of vision compared with sensory input acquired from the antenniform legs for navigation as well as other aspects of their spatial behavior. Displaced individuals were randomly assigned to three treatment groups: (i) control individuals; (ii) visiondeprived individuals, VD; and (iii) individuals with sensory input from the tips of their antenniform legs compromised, AD. Control and VD subjects were generally successful in returning home, and the direction of their movement on the first night following displacement was homeward oriented. By contrast, AD subjects experienced a complete loss of navigational ability, and movement on the first night indicated no hint of homeward orientation. The data strongly support the hypothesis that sensory input from the tips of the antenniform legs is necessary for successful homing in amblypygids following displacement to an unfamiliar location, and we hypothesize an essential role of olfaction for this navigational ability.
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