Summary
A sample of one-year-old seedlings of European white birch (Betula pendula) was analyzed to determine the content of sugars, phenolics and terpenoid compounds. Two vertical segments of each seedling were analyzed separately. The number of resin droplets, which correlates strongly and negatively with feeding by the mountain hare, was also counted on the bark of experimental seedlings. The variation in the palatability of birch seedlings to mountain hare was determined primarily by the most abundant terpenoid, papyriferic acid. On the other hand, the resistance to hare feeding at the seedling bases, which are frequently attacked by voles, appeared to be dependent on other components, apparently phenolic substances. Sugars did not affect the resistance of the tested seedlings. The variation among experimental seedlings was much greater for secondary substances, especially terpenoid compounds, than for sugars. It is suggested that this high variation in protective compounds may be an adaptive trait selected for by the feeding of generalist herbivores.
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References
Aarnio M (1983) Selection and quality of winter food of the mountain hare in southern Finland. Finnish Game Res 41:57–65
Angerbjörn A, Pehrson Å (1987) Factors influencing winter food choice by mountain hares (Lepus timidus) on Swedish coastal islands. Can J Zool 65:2163–2167
Bryant JP (1981a) The regulation of snowshoe hare feeding behaviour during winter by plant antiherbivore chemistry. Pp 720–731in Proc World Lagomorph Conference, Guelph, Canada
Bryant JP (1981b) Phytochemical deterrence of snowshoe hare browsing by adventitious shoots of four Alaskan trees. Science 313:889–890
Bryant JP (1987) Feltleaf willow-snowshoe hare interactions: plant carbon/nutrient balance and floodplain succession. Ecology 68:1319–1327
Bryant JP, Chapin FS III, Klein DR (1983) Carbon/nutrient balance of boreal plants in relation to vertebrate herbivory. Oikos 40:357–368
Bryant JP, Kuropat PJ (1980) Selection of winter forage by subarctic browsing vertebrates: the role of plant chemistry. Annu Rev Ecol Syst 11:261–285
Bryant JP, Tahvanainen J, Sulkinoja M, Julkunen-Tiitto R, Reichardt P, Green T (1989) Biogeographic evidence for the evolution of chemical defense by boreal birch and willow against mammal browsing. Am Nat 134:20–34
Bryant JP, Wieland GD, Clausen T, Kuropat P (1985) Interactions of snowshoe hare and feltleaf willow in Alaska. Ecology 66:1564–1573
Coley PD (1983) Herbivory and defensive characteristics of tree species in a lowland tropical forest. Ecol Monogr 53:209–233
Helle E, Tahvanainen J, Julkunen-Tiitto R, Uotila I (1986) How and why does the mountain hare select its winter diet? Suomen Riista 33:111–120 (in Finnish with English summary)
Joiga MK, Sinclair ARE, Andersen RJ (1989) An antifeedent in balsam poplar inhibits browsing by snowshoe hares. Oecologia 79:189–192
Klein DR (1977) Winter food preferences of snowshoe hares (Lepus americanus) in Alaska. Pp 266–275in Proc 13th Int Congr Game Biol, Atlanta, USA
Lapinjoki SP, Elo HA, Taipale HT (1991) Development and structure of resin glands on tissues ofBetula pendula Roth. during growth. New Phytol 117:219–223
Lindlöf B, Lindström E, Pehrson Å (1974) Nutrient content in relation to feed preferred by mountain hare. J Wildl Manage 38:875–879
Miller GR (1968) Evidence for selective feeding on fertilized plots by red grouse, hares, and rabbits. J Wildl Manage 32:849–853
Palo RT (1984) Distribution of birch (Betula spp.), willow (Salix spp.) and poplar (Populus spp.) secondary metabolites and their potential role as chemical defense against herbivores. J Chem Ecol 10:499–520
Palo RT (1985) Chemical defense in birch. Inhibition of digestibility in ruminants by phenolic extracts. Oecologia 68:10–14
Palo RT (1987) Phenols as defensive compounds in birch (Betula spp.). Implications for digestion and metabolism in browsing mammals. Ph. D. thesis, Swedish University of Agricultural Sciences, Uppsala, Sweden
Palo T, Pehrson Å, Knutsson P-G (1983) Can birch phenolics be of importance in the defense against browsing vertebrates? Finnish Game Res 41:75–80
Palo RT, Sunnerheim K, Theander O (1985) Seasonal variation of phenols, crude protein and cell wall content of birch (Betula pendula) in relation to ruminant in vitro digestibility. Oecologia 65:314–318
Pehrson Å (1981) Winter food consumption and digestibility in caged mountain hares. Pp 732–742in Proc World Lagomorph Conference, Guelph, Canada
Pehrson Å (1983) Digestibility and retention of food components in caged mountain haresLepus timidus during the winter. Holarct Ecol 6:395–400
Pulliainen E (1972) Nutrition of the arctic hare (Lepus timidus) in northeastern Lapland. Ann Zool Fenn 9:17–22
Pulliainen E, Tunkkari PS (1987) Winter diet, habitat selection and fluctuation of a mountain hareLepus timidus population in Finnish Forest Lapland. Holarct Ecol 10:261–267
Reichardt P (1981) Papyriferic acid, a triterpenoid from Alaskan paper birch. J Org Chem 46:4576–4578
Reichardt PB, Bryant JP, Clausen TP, Wieland GD (1984) Defense of winter-dormant Alaska paper birch against snowshoe hares. Oecologia 65:58–59
Risenhoover KL, Renacker LA, Morgantini LE (1985) Effect of secondary metabolites from balsam poplar and paper birch on cellulose digestion. J Range Manage 38:370–371
Rousi M, Tahvanainen J, Uotila I (1989) Inter- and intraspecific variation in the resistance of winter-dormant birch (Betula spp.) against browsing by the mountain hare. Holarct Ecol 12:187–192
Rousi M, Tahvanainen J, Uotila I (1991a) A mechanism of resistance to hare browsing in winter-dormant Silver birch (Betula pendula). Am Nat 137:64–82
Rousi M, Tahvanainen J, Henttonen H, Uotila I (1991b) Effect of shading and fertilization on resistance of winter-dormant European white birch (Betula pendula) to vole and hare feeding. Ecology:in press
Sinclair ARE, Krebs CJ, Smith JNM (1982) Diet quality and limitation in herbivores: the case of the snowshoe hare. Can J Zool 60:889–897
Sinclair ARE, Smith JNM (1984) Do plant secondary compounds determine feeding preferences of snowshoe hares? Oecologia 61:403–410
Tahvanainen J, Helle E, Julkunen-Tiitto R, Lavola A (1985) Phenolic compounds of willow bark as deterrents against feeding by mountain hare. Oecologia 65:319–323
Taipale HT, Lapinjoki SP (1991) Use of evaporative light-scattering mass detection in HPLC of triterpenes in the bark resin ofBetula species. Phytochem Anal 2:84–86
Tuomi J, Niemelä P, Chapin FS III, Bryant JP, Sirén S (1988) Defensive responses of trees in relation to their carbon/nutrient balance. Pp 57–72in Mattson WJ, Levieux J, Bernard-Dagan C (eds) Mechanisms of Woody Plant Defenses Against Insects. New York: Springer-Verlag
Vainiotalo P, Julkunen-Tiitto R, Juntheikki M-R, Reichardt P, Auriola S (1991) Chemical charcteristics of herbivore defenses inBetula pendula winter-dormant young stems. J Chrom: 547:367–376
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Tahvanainen, J., Julkunen-Tiitto, R., Rousi, M. et al. Chemical determinants of resistance in winter-dormant seedlings of European white birch (Betula pendula) to browsing by the mountain hare. Chemoecology 2, 49–54 (1991). https://doi.org/10.1007/BF01240666
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DOI: https://doi.org/10.1007/BF01240666