Abstract
Within a species, ontogenetic and genetic variation in defensive chemistry can provide the basis for natural selection from different predator types. The osmeterial chemistry of fifth (last) instar Papilio glaucus caterpillars is known to differ qualitatively from the composition of early instar caterpillars. However, the osmeterial chemistry of early instar caterpillars has not been thoroughly characterized and may change as the caterpillars undergo their first three molts. We have used GC/MS to identify a suite of about 50 different terpene compounds in the osmeterial secretions of P. glaucus caterpillars, and found the relative amounts of these compounds changed significantly with each molt. These quantitative changes preceded the more dramatic qualitative switch to the production of 2-methylbutyric and isobutyric acids after the molt to the fifth instar. We also examined the effects of diet and genetic background on the relative quantities of 15 terpenes present in the secretions of third instar caterpillars. Parentage was found to affect the percentages of many more of the individual components than did diet, although both exerted an effect. The ontogenetic and genetic variations in the composition of the osmeterial secretions appear to have an effect on would-be predators. In the laboratory, terpene secretion was found to discourage attack by ants, whereas the switch from terpene to acid production rendered the caterpillars less palatable to a larger predator, the green anole. In the field, the presence of functional osmeteria did not seem to dramatically increase survival in a field study, and only a small, non-significant advantage was seen. Similarly, field data was suggestive that parentage might affect the likelihood of survival in a natural setting, but the stage of the caterpillar and the field site significantly affected survivorship. Further studies with greater replicates will be needed to determine whether and to what extent chemical differences in osmeterial components as well as behavior contribute to differences in outcomes in the field.







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References
Adams RP (1995) Identification of essential oil components by gas chromatography and mass spectroscopy. Allured Publishing Corporation, Illinois
Adams RP (2001) Identification of essential oil components by gas chromatography/quadruple mass spectroscopy. Allured Publishing Corporation, Illinois
Attygalle AB, Smedley SR, Meinwald J, Eisner T (1993) Defensive secretion of two notodontid caterpillars (Schizura unicornis, S. badia). J Chem Ecol 19:2089–2104
Berenbaum MR, Moreno B, Green E (1992) Soldier bug predation on swallowtail butterfly caterpillars (Lepidoptera: Papilionidae): circumvention of defensive chemistry. J Insect Behav 5:547–553
Blau WS (1980) The effect of environmental disturbance on a tropical butterfly population. Ecology 61:1005–1012
Blum MS (1981) Chemical defense of arthropods. Academic Press, New York
Bossart JL, Scriber JM (1995) Maintenance of ecologically significant genetic variation in the tiger swallowtail butterfly through differential selection and gene flow. Evolution 49:1163–1171
Bowers MD (1993) Aposematic caterpillars: lifestyles of the unpalatable and warningly colored. In: Stamp N, Casey T (eds) Ecological and evolutionary constraints on caterpillars and the implications for pest management. Chapman and Hall, London, pp 331–371
Burger BV, Munro Z, Röth M, Spies HSC, Truter V, Geertsema H, Habich A (1985) Constituents of osmeterial secretion of pre-final instar larvae of citrus swallowtail, Papilio demodocus (Esper) (Lepidoptera: Papilionidae). J Chem Ecol 11:1093–1113
Chow YS, Tsai RS (1989) Protective chemicals in caterpillar survival. Experientia 45:390–392
CO SUPEL (1998) Solid phase microextraction: theory and optimization of conditions. Bulletin 923:1–8
Cook SP, Hain FP (1988) Toxicity of host monoterpenes to Dendroctonus frontalis and Ips calligraphus (Coleoptera: Scolytidae). J Entomol Soc 23:287–292
Coyne JF, Lott LH (1976) Toxicity of substances in pine oleoresin to southern pine beetles. J Georgia Entomol Soc 11:297–301
Damman H (1986) The osmaterial glands of the swallowtail butterfly Eurytides marcellus as a defense against natural enemies. Ecol Entomol 11:261–265
Dewick P (2002) Medicinal natural products: a biosynthetic approach. Wiley, West Sussex
Dyer LA (1997) Effectiveness of caterpillar defenses against three species of invertebrate predators. J Res Lepid 34:48–68
Eisner T, Meinwald YC (1965) Defensive secretion of a caterpillar (Papilio). Science 150:1733–1735
Eisner T, Pliske TE, Ikeda M, Owen DF, Vázquez L, Pérez H, Franclemont JG, Meinwald J (1970) Defense mechanisms of arthropods. XXVII. Osmeterial secretions of papilionid caterpillars (Baronia, Papilio, Eurytides). Ann Entomol Soc Am 63:914–915
Eisner T, Johnessee JS, Carrel J, Hendry LB, Meinwald J (1974) Defensive use by an insect of a plant resin. Science 184:996–999
Feeny P, Blau WS, Kareiva PM (1985) Larval growth and survivorship of the black swallowtail butterfly in central New York. Ecol Monogr 55:167–187
Frankfater C (2004) Defensive chemistry of tiger swallowtail butterfly caterpillars: effects of genetically and developmentally-based variation on predation. PhD Dissertation. University of Mississippi, Oxford, MS
Honda K (1980) Volatile constituents of larval osmeterial secretions in Papilio protenor demetrius. J Insect Physiol 26:39–45
Honda K (1981) Larval osmeterial secretions of the swallowtails (Papilio). J Chem Ecol 7:1089–1113
Honda K (1983a) Evidence for de novo biosynthesis of osmeterial secretions in young larvae of the swallowtail butterflies (Papilio): deuterium incorporation in vivo into sesquiterpene hydrocarbons as revealed by mass spectrometry. Insect Biochem 20:245–250
Honda K (1983b) Defensive potential of components of the larval osmeterial secretion of papilionid butterflies against ants. Physiol Entomol 8:173–179
Honda K (1990) GC-MS and 13C-NMR studies on the biosynthesis of terpenoid defensive secretions by the larvae of papilionid butterflies (Luehdorfia and Papilio). Insect Biochem 20:245–250
Jones MT, Castellanos I, Weiss MR (2002) Do leaf shelters always protect caterpillars from invertebrate predators? Ecol Entomol 27:753–757
Leslie AJ, Berenbaum MR (1990) Role of the osmeterial gland in swallowtail larvae (Papilionidae) in defense against an avian predator. J Lepid Soc 44:245–251
Murphy SM (2004) Enemy-free space maintains swallowtail butterfly host shift. Proc Natl Acad Sci USA 101:18048–18052
Nishida R (2002) Sequestration of defensive substances from plants by Lepidoptera. Annu Rev Entomol 47:57–92
Omura H, Honda K, Feeny P (2006) From terpenoids to aliphalic acids: further evidence for late-instar switch in osmeterial defense as a characteristic trait of swallowtail butterflies in the tribe Papilionini. J Chem Ecol 32:1999–2012
Osborn F, Jaffe K (1998) Chemical ecology of the defense of two nymphalid butterfly larvae against ants. J Chem Ecol 24:1173–1186
Pavis C, Malosse C, Ducrot PH, Howse F, Jaffe K, Descoins C (1992) Defensive secretion of first-instar larvae of rootstalk borer weevil, Diaprepes abbreviatus L. (Coleoptera: Curculionidae), to the fire-ant Solenopsis geminata (F.) (Hymenoptera: Formicidae). J Chem Ecol 18:2055–2068
Rice PJ, Coats JR (1994) Structural requirements for monoterpene activity against insects. ACS symposium series 557 (Bioregulators for Crop Protection and Pest Control), pp 92–108
Rochat D, Ramirez-Lucas P, Malosse C, Aldana R, Kakul T, Morin J-P (2000) Role of solid-phase microextraction in the identification of highly volatile pheromones of two Rhinoceros beetles Scapanes australis and Strategus aloeus (Coleoptera, Scarabidae, Dynastinae). J Chromatogr A 885:433–444
SAS Institute Inc (1999) StatView reference. pp 528
Scheiner SM, Gurevitch J (2001) Design and analysis of ecological experiments. Oxford University Press, Oxford
Seligman IM, Doy FA (1973) Biosynthesis of defensive secretions in Papilio aegeus. Insect Biochem 3:205–215
Smith AL, Campbell CL, Walker DB, Hanover JW, Miller RO (1988) Geographic variation in the essential oil monoterpenes of Lindera tulipifera L. Biochem Syst Ecol 16:627–630
Stamp NE, Wilkens RT (1993) On the cryptic side of life: being unapparent to enemies and the consequences for foraging and growth of caterpillars. In: Stamp NE, Casey TM (eds) Caterpillars: ecological and evolutionary constraints on foraging. Chapman and Hall, London, pp 283–330
Straatman R (1969) Notes on the biology and hostplant associations of Ornithoptera priamus urvilleanus and O. victoriae (Papilionidae). J Lepid Soc 23:69–76
Stump AD, Scriber JM (2006) Sperm precedence in experimental interspecific multiple matings of hybridizing North American tiger swallowtail butterfly species (Lepidoptera: Papilionidae). J Lepid Soc 60:65–78
Takagi M, Hirose Y, Yamasaki M (1995) Anti-predator defense in Papilio larvae: effective or not? In: Scriber JM, Tsubaki Y, Lederhouse RL (eds) Swallowtail butterflies: their ecology and evolutionary biology. Scientific Publishers, Gainesville, pp 85–92
Tellez MR, Khan IA, Schaneberg BT, Crockett SL, Rimando AM, Kobaisy M (2004) Steam distillation-solid-phase microextraction for the detection of Ephedra sinica in herbal preparations. J Chromatogr A 1025:51–56
Witz BW (1990) Antipredator mechanisms in arthropods: a twenty year literature survey. Fla Entomol 73:71–99
Young AM, Blum MS, Fales HM, Bian Z (1986) Natural history and ecological chemistry of the neotropical butterfly Papilio anchisiades (Papilionidae). J Lepid Soc 40:36–53
Acknowledgments
The authors would like to thank Dr. Agnes Rimando for getting her started on the GC/MS work and for a critical review of the manuscript. Heléne and Allen Frankfater helped enormously in setting out caterpillars in the July field study, and Scott Alcock assisted in censusing and collecting the caterpillars at the end of that study.
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Frankfater, C., Tellez, M.R. & Slattery, M. The scent of alarm: ontogenetic and genetic variation in the osmeterial gland chemistry of Papilio glaucus (Papilionidae) caterpillars. Chemoecology 19, 81–96 (2009). https://doi.org/10.1007/s00049-009-0013-y
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DOI: https://doi.org/10.1007/s00049-009-0013-y


