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- W1571459214 abstract "Resource availability can determine an organism's investment strategies for growth and reproduction. When nutrients are limited, there are potential tradeoffs between investing into offspring number versus individual offspring size. In social insects, colony investment in offspring size and number may shift in response to colony needs and the availability of food resources. We experimentally manipulated the diet of a polymorphic ant species (Solenopsis invicta) to test how access to the carbohydrate and amino acid components of nectar resources affect colony investment in worker number, body size, size distributions, and individual percent fat mass. We reared field-collected colonies on one of four macronutrient treatment supplements: water, amino acids, carbohydrates, and amino acid and carbohydrates. Having access to carbohydrates nearly doubled colony biomass after 60 days. This increase in biomass resulted from an increase in worker number and mean worker size. Access to carbohydrates also altered worker body size distributions. Finally, we found a negative relationship between worker number and size, suggesting a tradeoff in colony investment strategies. This tradeoff was more pronounced for colonies without access to carbohydrate resources. The monopolization of plant-based resources has been implicated in the ecological success of ants. Our results shed light on a possible mechanism for this success, and also have implications for the success of introduced species. In addition to increases in colony size, our results suggest that having access to plant-based carbohydrates can also result in larger workers that may have better individual fighting ability, and that can withstand greater temperature fluctuations and periods of food deprivation." @default.
- W1571459214 created "2016-06-24" @default.
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- W1571459214 date "2015-07-21" @default.
- W1571459214 modified "2023-09-27" @default.
- W1571459214 title "Effect of Carbohydrate Supplementation on Investment into Offspring Number, Size, and Condition in a Social Insect" @default.
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- W1571459214 doi "https://doi.org/10.1371/journal.pone.0132440" @default.
- W1571459214 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/4511185" @default.
- W1571459214 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/26196147" @default.
- W1571459214 hasPublicationYear "2015" @default.
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