Effects of larval versus adult density conditions on reproduction and behavior of a leaf beetle

Müller T, Küll CL, Müller C (2016)
Behavioral Ecology and Sociobiology 70(12): 2081-2091.

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Journal Article | Original Article | Published | English
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Abstract
Population density is an important social environmental factor influencing various life history traits of individuals in many species. In how far density also affects behavioral traits, and particularly at which life stage during ontogeny the adult behavioral phenotype is shaped, has been rarely examined, especially in holometabolous insects. We tested the effects of larval versus adult density on development, reproductive success, and the adult behavioral phenotype of a non-social beetle, Phaedon cochleariae. Therefore, we reared individuals either constantly isolated, in groups, or switched them to the other rearing density condition after metamorphosis. We expected beneficial consequences on the growth and reproduction of isolated individuals because these individuals did not have to compete for food and resting sites. The development time was significantly influenced by the larval density with isolated larvae developing faster than group-reared individuals. Furthermore, the reproductive success was higher for individuals kept isolated as larvae, regardless of the adult density, pointing to a silver spoon effect (i.e., persisting fitness advantage based on favorable, less competitive early conditions). Three behavioral dimensions were found in adult beetles, boldness, activity, and exploration. Adult boldness behavior and activity were influenced by either larval or adult density conditions in dependence of the context and/or sex. Thus, the present study highlights the major influence of the experienced larval density on adult reproductive success and demonstrates the high complexity in which the behavioral phenotype of a holometabolous insect is shaped by a social environmental factor.
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Müller T, Küll CL, Müller C. Effects of larval versus adult density conditions on reproduction and behavior of a leaf beetle. Behavioral Ecology and Sociobiology. 2016;70(12):2081-2091.
Müller, T., Küll, C. L., & Müller, C. (2016). Effects of larval versus adult density conditions on reproduction and behavior of a leaf beetle. Behavioral Ecology and Sociobiology, 70(12), 2081-2091. doi:10.1007/s00265-016-2212-1
Müller, T., Küll, C. L., and Müller, C. (2016). Effects of larval versus adult density conditions on reproduction and behavior of a leaf beetle. Behavioral Ecology and Sociobiology 70, 2081-2091.
Müller, T., Küll, C.L., & Müller, C., 2016. Effects of larval versus adult density conditions on reproduction and behavior of a leaf beetle. Behavioral Ecology and Sociobiology, 70(12), p 2081-2091.
T. Müller, C.L. Küll, and C. Müller, “Effects of larval versus adult density conditions on reproduction and behavior of a leaf beetle”, Behavioral Ecology and Sociobiology, vol. 70, 2016, pp. 2081-2091.
Müller, T., Küll, C.L., Müller, C.: Effects of larval versus adult density conditions on reproduction and behavior of a leaf beetle. Behavioral Ecology and Sociobiology. 70, 2081-2091 (2016).
Müller, Thorben, Küll, Christina Luise, and Müller, Caroline. “Effects of larval versus adult density conditions on reproduction and behavior of a leaf beetle”. Behavioral Ecology and Sociobiology 70.12 (2016): 2081-2091.
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Earlier Version
Effects of larval versus adult density conditions on reproduction and behavior of a leaf beetle
Müller T, Küll CL, Müller C (2016)
Behavioral Ecology and Sociobiology 70(12): 2081-2091.
Later Version
Effects of larval versus adult density conditions on reproduction and behavior of a leaf beetle
Müller T, Küll CL, Müller C (2016)
Behavioral Ecology and Sociobiology 70(12): 2081-2091.

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