Body size dimorphism and sexual segregation in polygynous ungulates: An experimental test with Soay sheep

Oecologia

Volumn 120, Issue 2, 1999, Pages 258-267

  Perez Barberia F J ^a   Gordon, I J ^a  

^a SCOTTISH CROP RESEARCH INSTITUTE   (United Kingdom)

Author keywords

Bite size; Incisor breadth; Intake; Key words Allometry; Patch selection

Indexed keywords

BODY SIZE; HYPOTHESIS TESTING; SEXUAL DIMORPHISM; SHEEP; UNGULATE;

OVIS ARIES;

EID: 17944390823     PISSN: 00298549     EISSN: None     Source Type: Journal    
DOI: 10.1007/s004420050856     Document Type: Article

References (75)

1. Altmann J (1974) Observational study of behaviour: sampling methods. Behaviour 49:227-267
2. Barthram GT (1981) Sward structure and the depth of the grazed horizon. Grass Forage Sci 36:130-131
3. Beier P (1987) Sex-differences in quality of white-tailed deer diets. J Mammal 68:323-329
4. Beier P, McCullough DR (1990) Factors influencing white-tailed deer activity patterns and habitat use. Wildlife Monogr 109:1-51
5. Bell RHV (1970) The use of the herb layer by grazing ungulates in the Serengeti. In: Watson A (ed) Animal populations in relation to their food resources. Blackwell, Oxford, pp 111-123
6. Bell RHV (1971) A grazing ecosystem in the Serengeti. Sci Am 224:86-93
7. Bleich VC, Bowyer RT, Wehausen JD (1997) Sexual segregation in mountain sheep: resources or predation? Wildlife Monogr 134:1-50
8. Bon R, Campan R (1996) Unexplained sexual segregation in polygamous ungulates: a defense of an ontogenic approach. Behav Process 38:131-154
9. Bowyer RT (1984) Sexual segregation in southern mule deer. J Mammal 65:410-417
10. Bruinderink GWTAG, Hazebroek E (1995) Ingestion and diet composition of red deer (Cervus elaphus L.) in the Netherlands from 1954 till 1992. Mammalia 59:187-195
11. Bunnell FL, Gillingham MP (1985) Foraging behavior: dynamics of dining out. In: Hudson RJ, White RG, (eds) Bioenergetics of wild herbivores. CRC, Boca Raton, pp 53-79
12. Burlison AJ, Hodgson J, Illius AW (1991) Sward canopy structure and the bite dimensions and bite weight of grazing sheep. Grass Forage Sci 46:29-38
13. Charles WN, McCowan D, East K (1977) Selection of upland swards by red deer (Cervus elaphus L.) on Rhum. J Appl Ecol 14:55-64
14. Clutton-Brock TH, Harvey PH (1983) The functional significance of variation in body size among mammals. Spec Publ Am Soc Mammal 7:633-663
15. Clutton-Brock TH, Guinness FE, Albon SD (1982) Red deer: behavior and ecology of two sexes. University of Chicago Press, Chicago
16. Cransac N, Valet G, Cugnasse JM, Rech J (1997) Seasonal diet of mouflon (Ovis gmelini): comparison of population sub-units and sex-age classes. Rev Ecol Terre Vie 52:21-36
17. Demment MW (1982) The scaling of ruminoreticulum size with body-weight in East-African ungulates. Afr J Ecol 20:43-47
18. Demment MW, Van Soest PJ (1985) A nutritional explanation for body-size patterns of ruminant and nonruminant herbivores. Am Nat 125:641-672
19. Druzinsky RE (1993) The time allometry of mammalian chewing movements: chewing frequency scales with body-mass in mammals. J Theor Biol 160:427-440
20. Duncan P (1975) Topi and their food supply. PhD thesis, University of Nairobi
21. Elston DA, Illius AW, Gordon IJ (1996) Assessment of preference among a range of options using log ratio analysis. Ecology 77:2538-2548
22. Geist V, Petocz RG (1977) Bighorn sheep in winter: do rams maximize reproductive fitness by spatial and habitat segregation from ewes? Can J Zool 55:1802-1810
23. Ginnett TF, Demment MW (1995) The functional-response of herbivores: analysis and test of a simple mechanistic model. Funct Ecol 9:376-384
24. Ginnett TF, Demment MW (1997) Sex differences in giraffe foraging behavior at two spatial scales. Oecologia 110:291-300
25. Goering HK, Van Soest PJ (1970) Forage fiber analysis (Agricultural Handbook 379). United States Department of Agriculture, Washington
26. Gordon IJ, Illius AW (1988) Incisor arcade structure and diet selection in ruminants. Funct Ecol 2:15-22
27. Gordon IJ, Illius AW, Milne JD (1996) Sources of variation in the foraging efficiency of grazing ruminants. Funct Ecol 10:219-226
28. Gross JE (1998) Sexual segregation in ungulates: a comment. J Mammal 79:1404-1409
29. Gross JE, Alkon PU, Demment MW (1995a) Grouping patterns and spatial segregation by Nubian ibex. J Arid Environ 30:423-439
30. Gross JE, Demment MW, Alkon PU, Kotzman M (1995b) Feeding and chewing behaviors of Nubian ibex: compensation for sex-related differences in body-size. Funct Ecol 9:385-393
31. Grubb P, Jewell PA (1974) Movement, daily activity and home range of Soay sheep. In: Jewell PA, Milner C, Morton Boyd J (eds) Island survivors. The ecology of the Soay sheep of St. Kilda. Athlone, London, pp 160-194
32. Gwynne MD, Bell RHV (1968) Selection of vegetation components by grazing ungulates in the Serengeti National Park. Nature 220:390-393
33. Hedrick AV, Temeles EJ (1989) The evolution of sexual dimorphism in animals: hypotheses and tests. Trends Ecol Evol 4:136-138
34. Hurlbert SH (1984) Pseudoreplication and the design of ecological field experiments. Ecol Monogr 54:187-211
35. Illius AW, Gordon IJ (1987) The allometry of food-intake in grazing ruminants. J Anim Ecol 56:989-999
36. Illius AW, Albon SD, Pemberton JM, Gordon IJ, Clutton-Brock TH (1995) Selection for foraging efficiency during a population crash in Soay sheep. J Anim Ecol 64:481-492
37. Jenks JA, Leslie DM, Lochmiller RL, Melchiors MA (1994) Variation in gastrointestinal characteristics of male and female white-tailed deer: implications for resource partitioning. J Mammal 75:1045-1053
38. Jiang ZG, Hudson RJ (1994) Bite characteristics of wapiti (Cervus elaphus) in seasonal Bromus-Poa swards. J Range Manage 47:127-132
39. Laca EA, Ungar ED, Seligman N, Demment MW (1992) Effect of sward height and bulk density on bite dimensions of cattle grazing homogeneous swards. Grass Forage Sci 47:91-102
40. Langvatn R, Hanley TA (1993) Feeding-patch choice by red deer in relation to foraging efficiency: an experiment. Oecologia 95:164-170
41. Leuthold BM, Leuthold W (1978) Daytime activity patterns of gerenuk and giraffe and Tsavo National Park, Kenya. E Afr Wildlife J 16:231-243
42. Main MB (1998) Sexual segregation in ungulates: a reply. J Mammal 79:1410-1415
43. Main MB, Coblentz BE (1996) Sexual segregation in Rocky Mountain mule deer. J Wildlife Manage 60:497-507
44. Main MB, Weckerly FW, Bleich VC (1996) Sexual segregation in ungulates: new directions for research. J Mammal 77:449-461
45. Martin P, Bateson P (1993) Measuring behaviour: an introductory guide, 2nd edn. Cambridge University Press, Cambridge
46. Milne JA (1991) Diet selection by grazing animals. Proc Nutr Soc 50:77-85
47. Milner JM, Albon SD, Illius AW, Pemberton JM, Clutton-Brock TH (1999) Repeated selection of morphometric traits in the Soay sheep on St. Kilda. J Anim Ecol 68:472-488
48. Miquelle DG, Peek JM, Vanballenberghe V (1992) Sexual segregation in Alaskan moose. Wildlife Monogr 122:1-57
49. Mysterud A (1998) The relative roles of body size and feeding type on activity time of temperate ruminants. Oecologia 113:442-446
50. Norušis M (1990) SPSS/PC+ 4.0 for the IBM PC/XT/AT and PS/ 2. SPSS, Chicago
51. Owen-Smith N (1982) Factors influencing the consumption of plants products by large herbivores. In: Huntley BJ, Walker BH (eds) Ecology of tropical savannas. Springer, Berlin Heidelberg New York, pp 359-404
52. Pella E, Colombo B (1973) Method for the determination of total N and C using an elemental analyser. Mikrochim Acta 1973:369-317
53. Pellew RA (1984) The feeding ecology of a selective browser, the giraffe (Giraffa camelopardalis tippelskirchi). J Zool 202:57-81
54. Penning PD, Parsons AJ, Newman JA, Orr RJ, Harvey A (1993) The effects of group size on grazing time in sheep. Appl Anim Behav Sci 37:101-109
55. Pérez-Barbería FJ, Gordon IJ (1998a) The influence of molar occlusal surface area on the voluntary intake, digestion, chewing behaviour and diet selection in red deer (Cervus elaphus). J Zool 245:307-316
56. Pérez-Barbería FJ, Gordon IJ (1998b) Factors affecting food comminution during mastication in herbivorous mammals: a review. Biol J Linn Soc 63:233-256
57. Pérez-Barbería FJ, Gordon IJ (1998c) The influence of sexual dimorphism in body size and mouth morphology on diet selection and sexual segregation in cervids. Acta Vet Hung 46:357-367
58. Pérez-Barbería FJ, Gordon IJ (1999). The relative influence of phylogeny, body size and feeding style on the activity time of temperate ruminants: a reanalysis. Oecologia 120:193-197
59. Pérez-Barbería FJ, Oliván M, Osoro K, Nores C (1997) Sex, seasonal and spatial differences in the diet of Cantabrian chamois Rupicapra pyrenaica parva. Acta Theriol 42:37-46
60. Prins HHT (1989) Condition changes and choice of social environment in African buffalo bulls. Behaviour 108:297-324
61. Robertson JB, Van Soest PJ (1981) The detergent system of analysis and its application to human foods. In: James WPT, Theander O (eds) The analysis of dietary fiber and food. Dekker, New York
62. Ruckstuhl KE (1998) Foraging behaviour and sexual segregation in bighorn sheep. Anim Behav 56:99-106
63. Shank CC (1982) Age-sex differences in the diets of wintering Rocky Mountain bighorn sheep. Ecology 63:627-633
64. Shipley LA, Gross JE, Spalinger DE, Hobbs NT, Wunder BA (1994) The scaling of intake rate in mammalian herbivores. Am Nat 143:1055-1082
65. Spalinger DE, Hobbs NT (1992) Mechanisms of foraging in mammalian herbivores: new models of functional response. Am Nat 140:325-348
66. Spinage CA (1968) A quantitative study of the daily activity of the Uganda defassa waterbuck. E Afr Wildlife J 6:89-93
67. Staines BW, Crisp JM (1978) Observations on food quality in Scottish red deer as determined by chemical analysis of rumen contents. J Zool Lond 185:253-277
68. Staines BW, Crisp JM, Parish T (1982) Differences in the quality of food eaten by red deer (Cervus elaphus) stags and hinds in winter. J Appl Ecol 19:65-77
69. Tabachnick BG, Fidell LS (1989) Using multivariate statistics, 2nd edn. Harper Collins, New York
70. Tabachnick BG, Fidell LS (1996) Using multivariate statistics, 3rd edn. Harper Collins, New York
71. Turvey MT, Schmidt RC, Rosenblum LD, Kugler PN (1988) On the time allometry of coordinated rhythmic movements. J Theor Biol 130:285-325
72. Watson A, Staines BW (1978) Differences in the quality of wintering areas used by male and female red deer (Cervus elaphus) in Aberdeenshire. J Zool Lond 186:544-550
73. Weckerly FW (1993) Intersexual resource partitioning in black-tailed deer: a test of the body-size hypothesis. J Wildlife Manage 57:475-494
74. Weckerly FW, Nelson JP (1990) Age and sex-differences of white-tailed deer diet composition, quality, and calcium. J Wildlife Manage 54:532-538
75. Welsh AH, Peterson AT, Altmann SA (1988) The fallacy of averages. Am Nat 132:277-288