Decision-making and Anticipation in Pill Bugs (Armadillidium vulgare)

Moriyama, Tohru; Migita, Masao

doi:10.1063/1.1787349

Cited by 4 publications

(5 citation statements)

References 5 publications

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“…For example, pill bugs look as if they determined where and when to turn according to biases of BALM [14], but two models described in this paper do not implement this kind of decisionmaking. For simplicity of the models, some important facts observed in the real pill bug behavior are omitted.…”

Section: Discussionmentioning

confidence: 99%

“…The experimental setting to be simulated is invented by TM for the preliminary observation of [14]. A subject, with its body length of about 10mm, is put at the center of a circular arena, with the diameter of 160mm, and a canal filled with water (2mm depth) around it, and its behavior is observed for fifteen minutes.…”

Section: Emergent Behavior In Experimental Environmentmentioning

confidence: 99%

“…It is suggested that water can work just like a wall obstructing a pill bug's movement [12,14], and a pill bug should be forced to turn at the shore not to fall into the water.…”

Section: Forced Turn By Watermentioning

confidence: 99%

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Cognitive Model of Animal Behavior to Comprehend an Aspect of Decision-Making

Migita¹,

Moriyama²

2004

AIP Conference Proceedings

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Extending the theory of planned behavior as a model of cognitive and motivational influences on academic performance AIP Conf.Abstract. Most animal behaviors are considered to have been evolved through their own courses of natural selection. Since mechanisms of natural selection depend tightly on environments in which animals of interest inhabit, the environment for an animal appears a priori, and stimulus-response (S-R) relationships are stable as long as it returns constant benefit. We claim, however, no environment for an animal cannot be regarded as a priori and any animal can exhibit more elaborated behavior than S-R. In other words, every animal is more or less cognitive in terms that it may modify a meaning of stimulus. We introduce a minimal model to demonstrate the cognitive aspect of the pill bug's turn alternation (TA) behavior. The simulated pill bug can modify its own response pattern to the stimulus of water, though stable response appears to be prerequisite to TA behavior.

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Section: Discussionmentioning

confidence: 99%

Section: Emergent Behavior In Experimental Environmentmentioning

confidence: 99%

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Cognitive Model of Animal Behavior to Comprehend an Aspect of Decision-Making

Migita¹,

Moriyama²

2004

AIP Conference Proceedings

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“…The similarity in turn alternation of distantly related species of terrestrial isopods suggests evolutionary conservation of these antipredator mechanisms (Hegarty and Kight 2014). It is also known that this escape behaviour is a result of the isopod's own decision-making (Moriyama 1999;Moriyama and Migita 2004) and that A. vulgare can correct its turns to increase its level of alternation (Moriyama et al 2016).…”

Section: Not To Be Therementioning

confidence: 99%

“…The most effective way for them to keep a straight-forward direction is through systematic turn alternations (Hughes 1967). This is the way to reach the greatest distance from a starting point with the highest level of probability (Hughes 1989;Moriyama and Migita 2004). This behavioural pattern is shared by a diverse range of animals, including humans (Lepley and Rice 1952;Grosslight and Harrison 1961;Pate and Bell 1971).…”

Section: Not To Be Therementioning

confidence: 99%

Antipredatory strategies of terrestrial isopods

Tuf¹,

Ďurajková²

2022

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Terrestrial isopods (Oniscidea) represent a widespread group of land Crustacea that have been able to successfully adapt to the terrestrial environment and occupy newly formed ecological niches. During the colonisation of land, they faced numerous challenges, including finding an effective way to avoid their new terrestrial predators. In response to predation pressure, they have developed various behavioural and morphological adaptations. These include tonic immobility, conglobation, clinging to the ground, releasing strongly acidic secretions, jumping, and efficient running away. Furthermore, terrestrial isopods can aggregate with other individuals, use stridulation, or change their typical activity time. Some of them also developed spiny tergites and aposematic colouration or posture. The majority of these strategies have not yet been studied.

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Development of an automatic turntable-type multiple T-maze device and observation of pill bug behavior

Shokaku

Moriyama

Murakami

et al. 2020

Review of Scientific Instruments

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In recent years, various animal observation instruments have been developed to support long-term measurement and analysis of animal behaviors. This study proposes an automatic observation instrument that specializes for turning behaviors of pill bugs and aims to obtain new knowledge in the field of ethology. Pill bugs strongly tend to turn in the opposite direction of a preceding turn. This alternation of turning is called turn alternation reaction. However, a repetition of turns in the same direction is called turn repetition reaction and has been considered a malfunction of turn alternation. In this research, the authors developed an automatic turntable-type multiple T-maze device and observed the turning behavior of 34 pill bugs for 6 h to investigate whether turn repetition is a malfunction. As a result, most of the pill bug movements were categorized into three groups: sub-diffusion, Brownian motion, and Lévy walk. This result suggests that pill bugs do not continue turn alternation mechanically but elicit turn repetition moderately, which results in various movement patterns. In organisms with relatively simple nervous systems such as pill bugs, stereotypical behaviors such as turn alternation have been considered mechanical reactions and variant behaviors such as turn repetition have been considered malfunctions. However, our results suggest that a moderate generation of turn repetition is involved in the generation of various movement patterns. This study is expected to provide a new perspective on the conventional view of the behaviors of simple organisms.

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Decision-making and Anticipation in Pill Bugs (Armadillidium vulgare)

Cited by 4 publications

References 5 publications

Cognitive Model of Animal Behavior to Comprehend an Aspect of Decision-Making

Cognitive Model of Animal Behavior to Comprehend an Aspect of Decision-Making

Antipredatory strategies of terrestrial isopods

Development of an automatic turntable-type multiple T-maze device and observation of pill bug behavior

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