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• W2895874574 startingPage "256" @default.
• W2895874574 abstract "Herbivores and omnivores, faced with a nutritionally complex diet, have evolved the capacity to balance the intake of specific nutrients. Recent studies have found that carnivores also have this capacity, despite their more nutritionally homogeneous diet. However, unlike herbivores and omnivores who prioritize protein intake when restricted to imbalanced foods, carnivores instead show much stricter regulation of fat intake. These choices to over- or under-consume nutrients when the intake target cannot be achieved are known as rules of compromise. To date, studies examining these rules have all been carried out at a single life stage, and it is unclear if these rules regarding the prioritization of nutrients are fixed or labile. We address this question with a carnivorous beetle, Nicrophorus vespilloides. We use a combination of dietary restriction and choice tests to determine the intake target and rules of compromise in reproductively mature beetles and in newly emerged adults undergoing a period of maturation feeding. We show that, despite having very similar intake targets, the rules of compromise differ between the 2 life stages. Although mature adults follow the typical carnivore rule of fat prioritization, immature adults behave more like omnivores, showing strict regulation of protein intake, resulting in obesity when restricted to protein-poor diets. These alternate rules suggest different mechanisms or capacities to cope with excess protein across these life stages. Examining how intake targets and rules of compromise change across life stages could be a valuable approach for our understanding of how animals will fare under rapidly changing environmental conditions." @default.
• W2895874574 created "2018-10-26" @default.
• W2895874574 creator A5031557460 @default.
• W2895874574 creator A5034751055 @default.
• W2895874574 date "2018-10-17" @default.
• W2895874574 modified "2023-10-16" @default.
• W2895874574 title "The nutritional ecology of maturation in a carnivorous insect" @default.
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• W2895874574 doi "https://doi.org/10.1093/beheco/ary142" @default.
• W2895874574 hasPublicationYear "2018" @default.

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