Abstract
A common by-product of human harvesting is orphaning of calves in autumn. Despite this, there are few studies in northern and temperate ungulates evaluating the fate of orphaned calves and the potential benefits to offspring and costs to mothers of post-weaning maternal care. We manipulated orphaning and forage distribution during winter for two herds of reindeer (Rangifer tarandus): one nonfed and the other supplementally fed to increase level of interference competition. Both herds consisted of females with and without calves at heel and orphaned calves. We measured survival and somatic losses during winter and distances between mother–calves and adult females–orphans within the herds. All females survived the winter, and there was no evidence of post-weaning maternal cost in terms of female’s mass loss. The winter mortality among calves was negligible and did not differ between orphans as compared to nonorphans. However, nonorphaned calves lost less mass and stayed closer to their mothers than orphans to adult females, suggesting that increased mortality might occur in harsher winters. This tended to be more marked in the fed group where interference competition was more likely due to feed being concentrated both in space and time. Reduced mass loss in nonorphans is therefore most likely due to mothers sharing and defending feeding resources and protecting their offspring from harassment by other herd members during their first winter. We conclude that hunting practise of northern and temperate ungulates where females having calf/calves at heel are intentionally or non-intentionally harvested, may have demographic side effects at least in harsh winters.
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References
Bårdsen BJ, Fauchald P, Tveraa T, Langeland K, Yoccoz NG, Ims RA (2008) Experimental evidence of a risk-sensitive reproductive allocation in a long-ived mammal. Ecology 89:829–837
Barrette C, Vandal D (1986) Social rank, dominance, antler size and access to food in snow-bound wild woodland caribou. Behaviour 97:118–146
Berger J, Cunningham C (1988) Size-related effects on search times in north American grassland female ungulates. Ecology 69:177–183
Brookshier JS, Fairbanks WS (2003) The nature and consequences of mother–daughter associations in naturally and forcibly weaned bison. Can J Zool 81:414–423
Clutton-Brock TH (1991) The evolution of parental care. Princeton University Press, Princeton
Clutton-Brock TH, Albon SD, Guinness FE (1981) Parental investment in male and female offspring in polygynous mammals. Nature 289:487–489
Clutton-Brock TH, Guinness FE, Albon SD (1983) The costs of reproduction to red deer hinds. J Anim Ecol 52:367–383
Clutton-Brock TH, Albon SD, Guinness FE (1989) Fitness costs of gestation and lactation in wild mammals. Nature 337:260–262
Espmark Y (1964) Studies in dominance-subordination relationship in a group of semi-domestic reindeer (rangifer tarandus L.). Anim Behav 12:420–426
Etter DR, Nixon CM, Sullivan JB, Thomas JA (1995) Emigration and survival of orphaned female deer in Illinois. Can J Zool 73:440–445
Fancy SG, White RG (1985) Energy expenditures by caribou while cratering in snow. J Wildl Manage 49:987–993
Festa-Bianchet M (1991) The social system of bighorn sheep: grouping patterns, kinship and female dominance rank. Anim Behav 42:71–82
Festa-Bianchet M, Jorgenson JT, Wuhart WD (1994) Early weaning in bighorn sheep, Ovis canadensis affects growth of males but not of females. Behav Ecol 5:21–27
Gates CC, Adamczewski J, Mulders R (1986) Population dynamics, winter ecology and social organization of Coats Island caribou. Arctic 39:216–222
Geist V (1999) Deer of the world. Their evolution, behaviour and ecology. San-Hill Press, London
Giovengo SL, Waring GH (1991) Social development of the American bison calf (Bison bison). Appl Anim Behav Sci 29:505
Giuliano WM, Demarais S, Zaiglin RE, Sumner ML (1999) Survival and movements of orphaned white-tailed deer fawns in Texas. J Wildl Manage 63:570–574
Godfray HCJ (1995) Evolutionary theory of parent–offspring conflict. Nature 376:133–138
Green WCH, Griswold JG, Rothstein A (1989) Post-weaning associations among bison mothers and daughters. Anim Behav 38:847–858
Guinness FE, Hall MJ, Cockerill RA (1979) Mother–offspring association in red deer (Cervus elaphus L.) on Rhum. Anim Behav 27:536–544
Hogg JT, Hass CC, Jenni DA (1992) Sex-biased maternal expenditure in Rocky Mountain bighorn sheep. Behav Ecol Sociobiol 31:243–251
Holand Ø, Mysterud A, Røed KH, Coulson T, Gjøstein H, Weladji RB, Nieminen M (2006) Adaptive adjustment of offspring sex ratio and maternal reproductive effort in an iteroparous mammal. Proc R Soc Lond Ser B 273:293–299
Hölzenbein S, Marchinton RL (1992) Spatial integration of maturing-male white-tailed deer into the adult popluation. J Mammal 73:326–334
Hudson RJ, Christopherson RJ (1985) Maintenance metabolism. In: Hudson RJ, White RG (eds) Bioenergetic of wild herbivores. CRC Press, Boca Raton, Florida, pp 143–159
Jolicoeur H, Crête M (1988) Winter survival and habitat use of orphaned and non-orphaned moose calves in southern Quebec. Can J Zool 66:919–924
Joly K (2000) Orphan caribou, Rangifer tarandus, calves: a re-evaluation of overwinter survival data. Can Fld-Nat 114:322–323
Jönsson KI (1997) Capital and income breeding as alternative tactics of resource use in reproduction. Oikos 78:57–66
Klein DR (1996) Arctic ungulates at the northern edge of terrestrial life. Rangifer 16:51–56
Kojola I (1989) Mother's dominance status and differential investment in reindeer calves. Anim Behav 38:177–185
Kojola I (1993) Early maternal investment and growth of reindeer. Can J Zool 71:753–758
Langvatn R, Mysterud A, Stenseth NC, Yoccoz NG (2004) Timing and synchrony of ovulation in red deer constrained by short northern summers. Am Nat 163:763–772
Lent PC (1974) Mother–infant relationships in ungulates. In: Geist V, Walther F (eds) The behaviour of ungulates and its relation to management. International Union for Conservation of Nature, Morges, pp 14–55
Loison A, Langvatn R, Solberg EJ (1999) Body mass and winter mortality in red deer calves: disentangling sex and climate effects. Ecography 22:20–30
Markgren G (1975) Winter studies on orphaned moose calves in Sweden. Swed Wildl Res 9:193–219
Milner JM, Bonenfant C, Mysterud A, Gaillard J-M, Csányi S, Stenseth NC (2006) Temporal and spatial development of red deer harvesting in Europe — biological and cultural factors. J Appl Ecol 43:721–734
Mysterud A, Røed KH, Holand Ø, Yoccoz NG, Nieminen M (2009) Age-related gestation length adjustment in a large iteroparous mammal at northern latitude. J Anim Ecol 78:1002–1006
Oftedal OT (1984) Milk composition, milk yield and energy output at peak lactation: a comparative review. Symp Zool Soc London 51:33–85
Post E (2003) Large-scale climate synchronizes the timing of flowering by multiple species. Ecology 84:277–281
Putman RJ, Staines BW (2004) Supplementary winter feeding of wild red deer Cervus elaphus in Europe and North America: justifications, feeding practice and effectiveness. Mammal Rev 34:285–306
Reimers E, Klein DR, Sørumgaard R (1983) Calving time, growth rate, and body size of Norwegian reindeer on different ranges. Arctic Alp Res 15:107–118
Røed KH, Holand Ø, Mysterud A, Tverdal A, Kumpula J, Nieminen M (2007) Male phenotypic quality influences offspring sex ratio in a polygynous ungulate. Proc R Soc Lond Ser B 274:727–733
Schaefer JA, Mahoney SP (2001) Antlers on female caribou: biogeography of the bones of contention. Ecology 82:3556–3560
Skogland T (1989) Comparative social organization of wild reindeer in relation to food, mates and predator avoidance. Adv Ethol 29:1–74
Stearns SC (1992) The evolution of life histories. Oxford University Press, Oxford
Trivers RL (1974) Parent-offspring conflict. Am Zool 14:249–264
Underwood R (1982) Vigilance behavior in grazing African antelopes. Behaviour 79:79–107
Veiberg V, Loe LE, Mysterud A, Langvatn R, Stenseth NC (2004) Social rank, feeding and winter weight loss in red deer: any evidence of interference competition? Oecologia 138:135–142
White RG, Luick JR (1984) Plasticity and constraints in the lactational strategy of reindeer and caribou. Symp Zool Soc London 51:215–232
Woodson DLE, Reed ET, Downing RL, McGinnes BS (1980) Effect of fall orphaning on white-tailed deer fawns and yearlings. J Wildl Manage 44:249–252
Acknowledgements
We thank the Finnish Reindeer Herders’ Association and especially Mika Tervonen and his crew at the Kutuharju Experimental Reindeer Station for carrying out the experiment, and the Finnish Game and Fisheries Research Institute, at the Reindeer Research Station in Kaamanen, for logistic support. The study complied with the Finnish National Advisory Board on Research Ethics requirements.
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Holand, Ø., Weladji, R.B., Mysterud, A. et al. Induced orphaning reveals post-weaning maternal care in reindeer. Eur J Wildl Res 58, 589–596 (2012). https://doi.org/10.1007/s10344-012-0608-4
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DOI: https://doi.org/10.1007/s10344-012-0608-4