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Mutual Avoidance in the Spectacled Salamander and Centipede: A Discrepancy between Exploratory Field and Laboratory
Francesco Cerini1, Claudio Pardo1, Davide Taurozzi2
1Dipartimento Scienze Ecologiche e Biologiche, Università della Tuscia, 01100 Viterbo, Italy.
Animals : an Open Access Journal From MDPI
|October 28, 2023
Summary
Spectacled salamanders (Salamandrina perspicillata) avoid centipedes (Scolopendra cingulata) in the wild, but experiments show this amphibian-centipede avoidance may not be chemically mediated. Further controlled studies are needed to confirm natural observations.
Area of Science:
- Ecology
- Herpetology
- Chemical Ecology
Background:
- Amphibian-arthropod interactions are often predator-prey dynamics, with amphibians typically as predators.
- Previous research highlights amphibians' sensitivity to chemical cues for predator detection and avoidance.
Purpose of the Study:
- To investigate the potential predator-prey relationship between the spectacled salamander (Salamandrina perspicillata) and the centipede Scolopendra cingulata.
- To examine olfactory cue-mediated avoidance behaviors of S. perspicillata towards S. cingulata.
Main Methods:
- Field observations of co-occurrence patterns under shelters in Central Italy.
- Manipulative experiments to test avoidance behavior when shelter sharing was enforced.
Main Results:
- A negative co-occurrence pattern, suggesting avoidance, was observed between S. perspicillata and S. cingulata in natural refuges.
- Manipulative experiments did not confirm this avoidance pattern when individuals were forced to share shelters.
Conclusions:
- Observation-based patterns of species interactions in nature require careful scrutiny and experimental validation.
- The observed avoidance may be influenced by factors other than direct chemical cues, necessitating further controlled studies.
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