Does the presence of the biological control agent, Hypena opulenta (Lepidoptera: Erebidae) on Swallow-Worts deter Monarch oviposition?

Marianna Szucs, Brianna Alred, Ruth Hufbauer, Nathan Haan & Douglas A Landis
Abstract Invasive black and pale swallow-worts (Vincetoxicum nigrum (L.) Moench, and Vincetoxicum rossicum Kelopow), which are related to milkweeds, can act as ecological traps for monarch butterflies (Danaus plexippus L. (Lepidoptera: Nymphalidae)) as they lay eggs on them that fail to develop. A recently approved biological control agent against swallow-worts, Hypena opulenta Christoph, occupies the same feeding guild on swallow-worts as monarch larvae and could be perceived as a competitor to monarchs. We tested how...
1 citation reported since publication in 2021.
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