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Ericson, Matilda, 2023. Transgenerational effects of diet influencing reproductive output in Spodoptera littoralis. Second cycle, A2E. Alnarp: SLU, Dept. of Plant Protection Biology

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Lack of food security is a serious problem, worsened by climate change, which impacts both the
crops and their pests, who are responsible for significant yield and quality losses in food crops.
Effective pest control demands knowledge of how the pests respond to environmental change.
Organisms can adjust to change through phenotypic plasticity, within and across generations.
Transgenerational effects have been observed in a variety of organisms, including Spodoptera
littoralis, a generalist herbivorous moth with a wide host range. To investigate possible
transgenerational effects of diet in this moth, two generations were reared on either maize or
cabbage, with matching or mismatching diets between generations. Life history traits were measured
in the offspring generation. A transgenerational effect was found on fecundity in treatments where
the offspring generation was reared on cabbage. A mismatching diet appeared beneficial, indicating
a positive effect on fitness of switching diets between generations. Within-generation plasticity was
found in larval growth rate, mortality, pupal weight and fecundity, with cabbage appearing to be the
superior diet, contrary to what may be expected from previous work regarding preference. These
results make further investigation into mechanisms of transgenerational effects in this species a very
interesting prospect.

Main title:Transgenerational effects of diet influencing reproductive output in Spodoptera littoralis
Authors:Ericson, Matilda
Supervisor:Andersson, Peter and Rösvik, Axel
Examiner:Stenberg, Johan A
Volume/Sequential designation:UNSPECIFIED
Year of Publication:2023
Level and depth descriptor:Second cycle, A2E
Student's programme affiliation:LM008 Horticultural Science Master's Programme, 120.0hp
Supervising department:(LTJ, LTV) > Dept. of Plant Protection Biology
Keywords:Transgenerational effects, Phenotypic plasticity, Larval diet, Lifehistory traits, Spodoptera littoralis
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Deposited On:06 Oct 2023 10:35
Metadata Last Modified:07 Oct 2023 01:00

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