Do Père David's Deer Remember Their Predators?
Author Information
Author(s): Li Chunwang, Yang Xiaobo, Ding Yuhua, Zhang Linyuan, Fang Hongxia, Tang Songhua, Jiang Zhigang
Primary Institution: Key Laboratory of Animal Ecology and Conservation Biology, Institute of Zoology, Chinese Academy of Sciences
Hypothesis
Do Père David's deer retain antipredator responses to the cues of their ancestral predators after a long period of isolation?
Conclusion
Père David's deer still retain memories of their ancestral predators, responding more strongly to the sounds and images of tigers than to other stimuli.
Supporting Evidence
- Père David's deer showed significant behavioral changes in response to the sounds of tigers and lions.
- The deer foraged less when exposed to tiger roars compared to other sounds.
- The deer took longer to restore normal behavior after hearing tiger roars than after other sound playbacks.
- The deer approached the tiger model more than other predator models.
Takeaway
Père David's deer can still remember their old predators, like tigers, even after being away from them for a very long time.
Methodology
The study involved sound playback and photo model experiments to observe the deer’s behavioral responses to various predator cues.
Limitations
The study's design may have led to non-independent responses among individuals due to repeated measures.
Participant Demographics
The study involved 108 deer, including 50 adult males, 37 adult females, and 21 yearlings and newborns.
Statistical Information
P-Value
p<0.05
Statistical Significance
p<0.05
Digital Object Identifier (DOI)
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