Plant-derived pyrrolizidine alkaloid protects eggs of a moth (Utetheisa ornatrix) against a parasitoid wasp (Trichogramma ostriniae).
Bezzerides A, Yong TH, Bezzerides J, Husseini J, Ladau J, Eisner M, Eisner T. Plant-derived pyrrolizidine alkaloid protects eggs of a moth (Utetheisa ornatrix) against a parasitoid wasp (Trichogramma ostriniae). Proc Natl Acad Sci U S A. 2004 Jun 15; 101(24):9029-32.