Individuality in nutritional preferences: a multi-level approach in field crickets

Han, Chang S., Jaeger, Heidi Y. and Dingemanse, Niels J. (2016) Individuality in nutritional preferences: a multi-level approach in field crickets. Scientific Reports, 6 . doi:10.1038/srep29071


Author Han, Chang S.
Jaeger, Heidi Y.
Dingemanse, Niels J.
Title Individuality in nutritional preferences: a multi-level approach in field crickets
Journal name Scientific Reports   Check publisher's open access policy
ISSN 2045-2322
Publication date 2016-06-30
Year available 2016
Sub-type Article (original research)
DOI 10.1038/srep29071
Open Access Status DOI
Volume 6
Total pages 6
Place of publication London, United Kingdom
Publisher Nature Publishing Group
Collection year 2017
Language eng
Formatted abstract
Selection may favour individuals of the same population to differ consistently in nutritional preference, for example, because optimal diets covary with morphology or personality. We provided Southern field crickets (Gryllus bimaculatus) with two synthetic food sources (carbohydrates and proteins) and quantified repeatedly how much of each macronutrient was consumed by each individual. We then quantified (i) whether individuals were repeatable in carbohydrate and protein intake rate, (ii) whether an individual's average daily intake of carbohydrates was correlated with its average daily intake of protein, and (iii) whether short-term changes in intake of carbohydrates coincided with changes in intake of protein within individuals. Intake rates were individually repeatable for both macronutrients. However, individuals differed in their relative daily intake of carbohydrates versus proteins (i.e., 'nutritional preference'). By contrast, total consumption varied plastically as a function of body weight within individuals. Body weight-but not personality (i.e., aggression, exploration behaviour)-positively predicted nutritional preference at the individual level as large crickets repeatedly consumed a higher carbohydrate to protein ratio compared to small ones. Our finding of level-specific associations between the consumption of distinct nutritional components demonstrates the merit of applying multivariate and multi-level viewpoints to the study of nutritional preference.
Keyword Southern field crickets (Gryllus bimaculatus)
Carbohydrates
Proteins
Nutritional preference
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: HERDC Pre-Audit
School of Biological Sciences Publications
 
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