Reproductive incompatibility and fitness components in Neoleucinodes elegantalis races (Lepidoptera, Crambidae) from three Solanaceae hosts

Дата публикации: 16-08-2026 00:00:00

ABSTRACT Neoleucinodes elegantalis (Lepidoptera, Crambidae) is a Neotropical Solanaceae pest that has evolved into four host races due to host plant association. In this study, prezygotic and postzygotic isolation were evaluated in parental and F1 generations collected from Solanum lycopersicum (S. 1), S. quitoense (S. q) and S. betaceum (S. b), representing medium size (S. 1, S. q) and large size genitalia races (S. b). 617 adults were obtained in the laboratory and 106 copulated. One spermatophore per female was found in the bursa copulatrix, suggesting monoandry. Crosses between adults mostly occurred assortatively. A third of the female's eggs laid occurred, but females from ♀. b x ♂ S. 1, ♀. 1 x ♂S. b and S. 1 x S. 1 did not. In the cross, ♀. 1 x ♂ S. q and its reciprocal F1 progeny developed into larvae. Reproductive success only occurred in three crosses: S. q x S. q, ♀. q x ♂ S. b and its reciprocal progeny. All the progeny from these crosses reached adulthood. The parental...

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