Precision Rescue Behavior in North American Ants

Altruistic behavior, in which one individual provides aid to another at some cost to itself, is well documented. However, some species engage in a form of altruism, called rescue, that places the altruist in immediate danger. Here we investigate one such example, namely rescuing victims captured by...

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Main Authors: Katherine Taylor, Allison Visvader, Elise Nowbahari, Karen L. Hollis
Format: Article
Language:English
Published: SAGE Publishing 2013-07-01
Series:Evolutionary Psychology
Online Access:https://doi.org/10.1177/147470491301100312
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author Katherine Taylor
Allison Visvader
Elise Nowbahari
Karen L. Hollis
author_facet Katherine Taylor
Allison Visvader
Elise Nowbahari
Karen L. Hollis
author_sort Katherine Taylor
collection DOAJ
description Altruistic behavior, in which one individual provides aid to another at some cost to itself, is well documented. However, some species engage in a form of altruism, called rescue, that places the altruist in immediate danger. Here we investigate one such example, namely rescuing victims captured by predators. In a field experiment with two North American ant species, Tetramorium sp. E and Prenolepis imparis, individuals were held in artificial snares simulating capture. T. sp. E, but not P. imparis, exhibited digging, pulling, and snare biting, the latter precisely targeted to the object binding the victim. These results are the first to document precision rescue in a North American ant species; moreover, unlike rescue in other ants, T. sp. E rescues conspecifics from different colonies, mirroring their atypical social behavior, namely the lack of aggression between non-nestmate (heterocolonial) conspecifics. In a second, observational study designed to demonstrate rescue from an actual predator, T. sp. E victims were dropped into an antlion's pit and the behavior of a single rescuer was observed. Results showed that T. sp. E not only attempted to release the victim, but also risked attacking the predator, suggesting that precision rescue may play an important role in this species' antipredator behavior.
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spelling doaj.art-9dd417bb1c774c58bd7a5f8457f536d32024-02-18T14:04:01ZengSAGE PublishingEvolutionary Psychology1474-70492013-07-011110.1177/14747049130110031210.1177_147470491301100312Precision Rescue Behavior in North American AntsKatherine TaylorAllison VisvaderElise NowbahariKaren L. HollisAltruistic behavior, in which one individual provides aid to another at some cost to itself, is well documented. However, some species engage in a form of altruism, called rescue, that places the altruist in immediate danger. Here we investigate one such example, namely rescuing victims captured by predators. In a field experiment with two North American ant species, Tetramorium sp. E and Prenolepis imparis, individuals were held in artificial snares simulating capture. T. sp. E, but not P. imparis, exhibited digging, pulling, and snare biting, the latter precisely targeted to the object binding the victim. These results are the first to document precision rescue in a North American ant species; moreover, unlike rescue in other ants, T. sp. E rescues conspecifics from different colonies, mirroring their atypical social behavior, namely the lack of aggression between non-nestmate (heterocolonial) conspecifics. In a second, observational study designed to demonstrate rescue from an actual predator, T. sp. E victims were dropped into an antlion's pit and the behavior of a single rescuer was observed. Results showed that T. sp. E not only attempted to release the victim, but also risked attacking the predator, suggesting that precision rescue may play an important role in this species' antipredator behavior.https://doi.org/10.1177/147470491301100312
spellingShingle Katherine Taylor
Allison Visvader
Elise Nowbahari
Karen L. Hollis
Precision Rescue Behavior in North American Ants
Evolutionary Psychology
title Precision Rescue Behavior in North American Ants
title_full Precision Rescue Behavior in North American Ants
title_fullStr Precision Rescue Behavior in North American Ants
title_full_unstemmed Precision Rescue Behavior in North American Ants
title_short Precision Rescue Behavior in North American Ants
title_sort precision rescue behavior in north american ants
url https://doi.org/10.1177/147470491301100312
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