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Titolo:
Induced responses to herbivory in the Neotropical ant-plant association between Azteca ants and Cecropia trees: response of ants to potential inducing cues
Autore:
Agrawal, AA; Dubin-Thaler, BJ;
Indirizzi:
Univ Calif Davis, Dept Entomol, Davis, CA 95616 USA Univ Calif Davis Davis CA USA 95616 is, Dept Entomol, Davis, CA 95616 USA Univ Calif Davis, Ctr Populat Biol, Davis, CA 95616 USA Univ Calif Davis Davis CA USA 95616 Ctr Populat Biol, Davis, CA 95616 USA Columbia Univ, Dept Phys, New York, NY 10027 USA Columbia Univ New York NY USA 10027 iv, Dept Phys, New York, NY 10027 USA
Titolo Testata:
BEHAVIORAL ECOLOGY AND SOCIOBIOLOGY
fascicolo: 1, volume: 45, anno: 1999,
pagine: 47 - 54
SICI:
0340-5443(199901)45:1<47:IRTHIT>2.0.ZU;2-E
Fonte:
ISI
Lingua:
ENG
Soggetto:
EXTRAFLORAL NECTARIES; LEONARDOXA-AFRICANA; INDUCED RESISTANCE; DEFENSE; LEAVES; INHABITANTS; DETERRENCE; PROTECTION; MUTUALISM; BENEFITS;
Keywords:
ant-plant interactions; induced resistance; mutualism; myrmecophyte; plant cues;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Citazioni:
64
Recensione:
Indirizzi per estratti:
Indirizzo: Agrawal, AA Univ Calif Davis, Dept Entomol, 1 Shields Ave, Davis, CA 95616USA Univ Calif Davis 1 Shields Ave Davis CA USA 95616 CA 95616 USA
Citazione:
A.A. Agrawal e B.J. Dubin-Thaler, "Induced responses to herbivory in the Neotropical ant-plant association between Azteca ants and Cecropia trees: response of ants to potential inducing cues", BEHAV ECO S, 45(1), 1999, pp. 47-54

Abstract

Plant defense against herbivores often involves constitutive and induciblemechanisms of resistance. Obligate ant-plants, which provide food and housing for ants, are thought to primarily rely on ants for defense against herbivores. This form of plant defense has largely been viewed as static. We have been investigating the dynamic nature of Azteca ants as an inducible defense of Cecropia trees. Ants rapidly recruit to and patrol sites of foliardamage. We propose that Azteca ants can be viewed as an inducible defense for Cecropia trees because of their sensitivity to cues associated with herbivory, their rapid and aggressive recruiting ability, and their reclaimable and redeployable nature as a plant defense. In this study, we examine antbehavior following plant damage, and the potential cues that indude ant recruitment. We found that ants present on leaves when the plant is damaged leave the damaged leaf and recruit other ants to it, presumably by laying recruitment trails. Volatile leaf cues associated with herbivory were important in eliciting an induced response in two experiments. However, we found that cues associated with a congeneric plant elicited a much stronger ant response than conspecific cues. Although the type of leaf damage (gaping wounds versus leaf edge wounds) did not affect the level of ant recruitment, the extent of damage did. Leaves with one hole punched showed a 50% increase in ants, while leaves with five holes punched in them elicited a 100% increase in ant numbers. In sum, it appears that multiple plant-related cues associated with herbivory are involved in induction of ant recruitment in the Cecropia-Azteca system. We discuss the generality of ant responses to herbivory in obligate ant-plant systems, and in facultative ant-plant associations, which may be more common.

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Documento generato il 24/09/20 alle ore 05:25:09