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Characteristics of daily foraging activity of Camponotus japonicus via time series analysis

Social insects often share tasks among individuals. In this study, we analyzed the foraging activity of ants (Camponotus japonicus) and recorded the daily passage event counts of individual workers between a nest chamber and a foraging arena in five monodomous colonies. We proposed two hypotheses on...

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Autores principales: Goko, Hiromichi, Yamanaka, Osamu, Shiraishi, Masashi, Nishimori, Hiraku
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Public Library of Science 2023
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10653500/
https://www.ncbi.nlm.nih.gov/pubmed/37971994
http://dx.doi.org/10.1371/journal.pone.0293455
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author Goko, Hiromichi
Yamanaka, Osamu
Shiraishi, Masashi
Nishimori, Hiraku
author_facet Goko, Hiromichi
Yamanaka, Osamu
Shiraishi, Masashi
Nishimori, Hiraku
author_sort Goko, Hiromichi
collection PubMed
description Social insects often share tasks among individuals. In this study, we analyzed the foraging activity of ants (Camponotus japonicus) and recorded the daily passage event counts of individual workers between a nest chamber and a foraging arena in five monodomous colonies. We proposed two hypotheses on the time series of foraging frequency by individual worker ants as follows: (i) for the time series of foraging frequency by individual worker ants, the foraging frequency on a certain day could be expressed by the product of the foraging frequency on the previous day and the exponential of a random number. (ii) The random numbers are correlated between some pairs of worker ants. The results for the five tested ant colonies showed that the probability of total daily passage counts (the sum of an individual’s passage count) followed a log-normal distribution. The worker ants behaved differently in terms of active days and foraging frequency. However, for > 54% of the worker ants, the probability of the daily passage count was characterized by a log-normal distribution, and these worker ants performed > 72% of the tasks in each colony. Furthermore, for > 73% of the worker ants, the time development of the passage count was mathematically modeled; the logarithmic first difference between the passage counts on a certain day and those on the previous day was a random normal variable. These results support hypothesis (i). Additionally, the random numbers that were equivalent to the logarithmic first difference were correlated for some pairs of worker ants. These results support hypothesis (ii).
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spelling pubmed-106535002023-11-16 Characteristics of daily foraging activity of Camponotus japonicus via time series analysis Goko, Hiromichi Yamanaka, Osamu Shiraishi, Masashi Nishimori, Hiraku PLoS One Research Article Social insects often share tasks among individuals. In this study, we analyzed the foraging activity of ants (Camponotus japonicus) and recorded the daily passage event counts of individual workers between a nest chamber and a foraging arena in five monodomous colonies. We proposed two hypotheses on the time series of foraging frequency by individual worker ants as follows: (i) for the time series of foraging frequency by individual worker ants, the foraging frequency on a certain day could be expressed by the product of the foraging frequency on the previous day and the exponential of a random number. (ii) The random numbers are correlated between some pairs of worker ants. The results for the five tested ant colonies showed that the probability of total daily passage counts (the sum of an individual’s passage count) followed a log-normal distribution. The worker ants behaved differently in terms of active days and foraging frequency. However, for > 54% of the worker ants, the probability of the daily passage count was characterized by a log-normal distribution, and these worker ants performed > 72% of the tasks in each colony. Furthermore, for > 73% of the worker ants, the time development of the passage count was mathematically modeled; the logarithmic first difference between the passage counts on a certain day and those on the previous day was a random normal variable. These results support hypothesis (i). Additionally, the random numbers that were equivalent to the logarithmic first difference were correlated for some pairs of worker ants. These results support hypothesis (ii). Public Library of Science 2023-11-16 /pmc/articles/PMC10653500/ /pubmed/37971994 http://dx.doi.org/10.1371/journal.pone.0293455 Text en © 2023 Goko et al https://creativecommons.org/licenses/by/4.0/This is an open access article distributed under the terms of the Creative Commons Attribution License (https://creativecommons.org/licenses/by/4.0/) , which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
spellingShingle Research Article
Goko, Hiromichi
Yamanaka, Osamu
Shiraishi, Masashi
Nishimori, Hiraku
Characteristics of daily foraging activity of Camponotus japonicus via time series analysis
title Characteristics of daily foraging activity of Camponotus japonicus via time series analysis
title_full Characteristics of daily foraging activity of Camponotus japonicus via time series analysis
title_fullStr Characteristics of daily foraging activity of Camponotus japonicus via time series analysis
title_full_unstemmed Characteristics of daily foraging activity of Camponotus japonicus via time series analysis
title_short Characteristics of daily foraging activity of Camponotus japonicus via time series analysis
title_sort characteristics of daily foraging activity of camponotus japonicus via time series analysis
topic Research Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10653500/
https://www.ncbi.nlm.nih.gov/pubmed/37971994
http://dx.doi.org/10.1371/journal.pone.0293455
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