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Ecol Evol

Title:		Elevated temperature increases reproductive investment in less preferred mates in the invasive European corn borer moth
Author(s):		Enos AN; Kozak GM;
Address:		Department of Biology University of Massachusetts-Dartmouth Dartmouth Massachusetts USA
Journal Title:		Ecol Evol
Year:		2021
Volume:		20210804
Issue:		17
Page Number:		12064 - 12074
DOI:		10.1002/ece3.7972
ISSN/ISBN:		2045-7758 (Print) 2045-7758 (Electronic) 2045-7758 (Linking)
Abstract:		"Rapidly changing environments may weaken sexual selection and lead to indiscriminate mating by interfering with the reception of mating signals or by increasing the costs associated with mate choice. If temperature alters sexual selection, it may impact population response and adaptation to climate change. Here, we examine how differences in temperature of the mating environment influence reproductive investment in the European corn borer moth (Ostrinia nubilalis). Mate preference in this species is known to be related to pheromone usage, with assortative mating occurring between genetically distinct E and Z strains that differ in the composition of female and male pheromones. We compared egg production within and between corn borer lines derived from four different populations that vary in pheromone composition and other traits. Pairs of adults were placed in a mating environment that matched the pupal environment (ambient temperature) or at elevated temperature (5 degrees C above the pupal environment). At ambient temperature, we found that within-line pairs produced eggs sooner and produced more egg clusters than between-line pairs. However, at elevated temperature, between-line pairs produced the same number of egg clusters as within-line pairs. These results suggest that elevated temperature increased investment in matings with typically less preferred, between-line mates. This increased investment could result in changes in gene flow among corn borer populations in warming environments"
Keywords:		Lepidoptera climate change mate choice plasticity sexual selection;
Notes:		"PubMed-not-MEDLINEEnos, Arielle N Kozak, Genevieve M eng England 2021/09/16 Ecol Evol. 2021 Aug 4; 11(17):12064-12074. doi: 10.1002/ece3.7972. eCollection 2021 Sep"