Abstract
The interaction between yucca moths (Tegeticula spp., Incurvariidae) and yuccas (Yucca spp., Agavaceae) is an obligate pollination/seed predation mutualism in which adult female yucca moths pollinate yuccas, and yucca moth larvae feed on yucca seeds. In this paper we document that individual yucca moths, which are capable of acting as mutualists, facultatively “cheat” by ovipositing in yucca pistils without attempting to transfer pollen. Additionally, a high proportion of flowers are unlikely to receive pollen even when pollination is attempted, because many yucca moths carry little or no pollen. The probability of occurrence of non-mutualistic behaviour is not affected by the amount of pollen a moth carries: moths with full pollen loads are just as likely to act non-mutualistically as moths carrying little or no pollen. We propose four hypotheses that could explain facultative non-mutualistic behaviour in yucca moths.
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Addicott JF (1986) Variation in the costs and benefits of mutualism: the interaction between yuccas and yucca moths. Oecologia 70:486–494
Aker CL, Udovic D (1981) Oviposition and pollination behaviour of the yucca moth, Tegeticula maculata (Lepidoptera: Prodoxidae), and its relation to the reproductive biology of Yucca whipplei (Agavaceae). Oecologia 49:96–101
Altmann J (1974) Observational study of behavior: sampling methods. Behaviour 49:227–265
Arrebola-Nacle F (1991) Polinización de Yucca aloifolia L. (Agavaceae) en España. SHILAP Revta, lepid, 19:281–292
Boucher DH, James S, Keeler KH (1982) The ecology of mutualism. Ann Rev Ecol Syst 13:315–347
Davis DR (1967) A revision of the Moths of the Subfamily Prodoxinae (Lepidoptera: Incurvariidae). U.S. National Museum Bulletin 255:1–170
Feinsinger P (1983) Variable nectar secretion in a Heliconia species pollinated by Hermit hummingbirds. Biotropica 15:48–52
Inouye DW (1983) The ecology of nectar robbing. In: Bentley B, Elias T (eds) The Biology of Nectaries. columbia University Press, New York, pp 153–173
Keeley JE, Keeley SC, Swift CC, Lee J (1984) Seed predation due to the Yucca moth symbiosis. Am Midl Nat 112:187–191
Kingsolver RW (1984) Population biology of a mutualistic association: Yucca glauca and Tegeticula yuccasella. Ph.D. Dissertation. University of Kansas
Lehner PN (1979) Handbook of ethological methods. Garland STPM Press, New York, 403 pp
Powell JA, Mackie RA (1966) Biological relationships of moths and Yucca whipplei (Lepidoptera: Gelechiidae, Blastobasidae, Prodoxidae). University of Cal Publ Entom 42:1–59
Riley CV (1892) The yucca moth and yucca pollination. Ann Report Miss Botan Gard 32:99–159
Soberon J, Martinez C (1985) Cheating and taking advantage in mutualistic associations. In: Boucher DH (ed) The Biology of Mutualism. Croom Helm, London, pp 192–217
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Present address: Department of Biology, Simon Fraser University, Burnaby, British Columbia V5A 1S6, Canada
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Tyre, A.J., Addicott, J.F. Facultative non-mutualistic behaviour by an “Obligate” mutualist: “Cheating” by Yucca moths. Oecologia 94, 173–175 (1993). https://doi.org/10.1007/BF00341314
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DOI: https://doi.org/10.1007/BF00341314