Assessment of movement patterns in Folsomia candida (Hexapoda: Collembola) in the presence of food |
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| Authors: | A Auclerc S Salmon JF Ponge |
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| Institution: | a Muséum National d'Histoire Naturelle, CNRS UMR 7179, 4 avenue du Petit-Chateau, 91800 Brunoy, France
b Muséum National d'Histoire Naturelle, CNRS UMR 7179, 55 rue Buffon, Case Postale 55, 75231 Paris Cedex 5, France |
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| Abstract: | We showed that Folsomia candida (a blind soil-dwelling Collembola) was able to shift from non-directional (random or search strategy) to directional (target-oriented) movements at short distance of food. We measured departure from linearity and access (or not) to food by the springtail according to distance to the target position. Video-records and image analysis were used to obtain numerical data at 0.2 s interval. The probability of food capture within 10 min (maximum duration of the experiment) was negatively related to distance. Two patterns can be observed along successful trajectories in our experimental conditions (22 °C, ambient light, still air), non-directional movement being followed by directional movement when the animals approach food at 25 mm. |
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| Keywords: | Soil invertebrates Directional movement Food capture |
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