Publikation:

The role of parasitism in individual and collective behavior of guppies

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2024

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Open Access-Veröffentlichung
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6. Februar 2026

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Collective behavior is a fascinating and ubiquitous phenomenon in the animal kingdom, with many examples, including the coordinated motion of cells, schooling fish, and flocking birds. Among organisms, collective action can benefit group members, such as by enhancing their ability to avoid predators or find food. In addition, social interactions can be influenced by other factors, such as changes in temperature or resources, or the presence of pathogens. The study of collective behavior can help us understand how diseases spread through populations, and by establishing how individual animals respond to a pathogen, we might be able to better predict how a disease can spread. With recent technological advances in image-based analysis software and algorithms, we can study animal behavior in greater detail than ever before, and the use of such quantitative methodology allows researchers to uncover new insights into how and why animals behave in the way they do. In this work, we employed cutting-edge tracking software technology to study how the behavior of guppies (Poecilia reticulata) is affected by the infection of the socially transmitted ectoparasite Gyrodactylus sp. both at an individual and at a collective level. In Chapter 1, we use a swim tunnel with intermittent flow respirometry and develop a quantitative approach that allows us to combine information regarding swimming kinematics, performance, and respirometry to evaluate the effect of parasitism on individual swimming behavior across increasing water flow speeds. Guppies are highly social; therefore, in Chapter 2 we extend our questions to the collective level, presenting experiments designed to investigate how the presence of a contagious parasite affects the fission-fusion dynamics of freely shoaling guppies move and interact. Finally, in Chapter 3, we investigate how differential social influence (also referred to as leader-follower dynamics) varies across a broad range of interaction timescales of interactions, and evaluate how this relates to parasitism. The combined results of these analyses demonstrate the value of an integrative approach to better understand the role of disease across scales from individual to group - and from group to inter-group - dynamics in the study of animal behavior.

Zusammenfassung in einer weiteren Sprache

Fachgebiet (DDC)
570 Biowissenschaften, Biologie

Schlagwörter

Collective behavior, Guppies, Parasitism, Kinematics, Respirometry, Fission-fusion

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ISO 690ALBI, Angela, 2024. The role of parasitism in individual and collective behavior of guppies [Dissertation]. Konstanz: University of Konstanz
BibTex
@phdthesis{Albi2024paras-69269,
  year={2024},
  title={The role of parasitism in individual and collective behavior of guppies},
  author={Albi, Angela},
  address={Konstanz},
  school={Universität Konstanz}
}
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With recent technological advances in image-based analysis software and algorithms, we can study animal behavior in greater detail than ever before, and the use of such quantitative methodology allows researchers to uncover new insights into how and why animals behave in the way they do. In this work, we employed cutting-edge tracking software technology to study how the behavior of guppies (Poecilia reticulata) is affected by the infection of the socially transmitted ectoparasite Gyrodactylus sp. both at an individual and at a collective level. In Chapter 1, we use a swim tunnel with intermittent flow respirometry and develop a quantitative approach that allows us to combine information regarding swimming kinematics, performance, and respirometry to evaluate the effect of parasitism on individual swimming behavior across increasing water flow speeds. Guppies are highly social; therefore, in Chapter 2 we extend our questions to the collective level, presenting experiments designed to investigate how the presence of a contagious parasite affects the fission-fusion dynamics of freely shoaling guppies move and interact. Finally, in Chapter 3, we investigate how differential social influence (also referred to as leader-follower dynamics) varies across a broad range of interaction timescales of interactions, and evaluate how this relates to parasitism.
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Prüfungsdatum der Dissertation

February 7, 2023
Hochschulschriftenvermerk
Konstanz, Univ., Diss., 2023
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