International Carnivorous Plant Society
Carnivorous Plant Newsletter Archive
Frequency of trap closure and capture of prey by Dionaea muscipula in the field
Stephen E. Williams and Bill Scholl
Carniv. Pl. Newslett. 50(3):100-110
Published September 2021
In dry weather closure frequency of traps capable of closure was low, averaging 3.5%/day at one site and 3.1%/day at another. At both sites the capture frequency of traps capable of closing was only 1.4%/day. The low frequency of capture, and high percentage of closures that result in capture, indicate that the low capture frequency is due to a low number potential prey entering and triggering the trap rather than a low efficiency of capturing the prey that enters. Traps that close, but fail to capture prey, have been observed to be triggered by insects, spiders, snails, and even toads that were far too large to be captured. A few captured beetles have been observed to force their way out of trap lobes. Dionaea traps capture prey at all hours of the day. The capture frequencies are variable and are not significantly higher in any specific time period. Both nocturnal and diurnal animals were captured.
Keywords: Dionaea muscipula, trap closure, capture
Stephen E. Williams and Bill Scholl. 2021. Frequency of trap closure and capture of prey by Dionaea muscipula in the field. Carniv. Pl. Newslett. 50(3):100-110.
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