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Behavioral Ecology and Sociobiology

, Volume 63, Issue 3, pp 371–380 | Cite as

Spatio-temporal vigilance architecture of an Australian flying-fox colony

  • Stefan M. Klose
  • Justin A. Welbergen
  • Anne W. Goldizen
  • Elisabeth K. V. Kalko
Original Paper

Abstract

The social structure of animal aggregations may vary considerably in both space and time, yet little is known about how this affects vigilance. Here, we investigate the vigilance architecture of a colony of wild-living grey-headed flying-foxes (Pteropus poliocephalus) in Australia and examine how spatial as well as temporal variation in social organization influences social and environmental vigilance. We sampled color-marked individuals at different stages of the reproductive cycle and the year and at different locations in the colony to examine the effects of temporal and spatial factors on social and environmental vigilance. We found that vigilance architecture reflected the social structure of the colony, with the highest environmental vigilance being displayed by bats at the periphery of the colony, and the highest social vigilance by bats that roosted at intermediate distances from the colony’s edge. Furthermore, we found that vigilance levels reflected changes in reproductive state, with social vigilance increasing toward the mating season, particularly in males. Our findings show that spatial and temporal variation in social structure can have differential effects on social and environmental vigilance. This highlights the necessity to differentiate between functions of vigilance to understand fully vigilance architecture in aggregations of social animals.

Keywords

Cooperation Risk dilution Antipredatory strategies Behavioral monitoring Chiroptera 

Notes

Acknowledgements

We wish to thank Silke Berger, Joanna Fietz, Les Hall, Kirsten Jung, Christoph Meyer, Nico Janicke, Kevin Murray, Martin Pfeiffer, and an anonymous referee for comments and discussions, and David Drynan, Allan Goodwin, Dave Pinson, Amy Noone, Peter Rohde, and Jodi Thomas as well as the team of Luffley Café for their excellent logistic support. The Tweed Shire Council, Diane Mitchell, and Harry Williams allowed us to work on their properties. Financial support at different stages of this project came from the Australian Government Endeavour Programme, Donors’ Association for the Promotion of Science and Humanities in Germany (“Stifterverband”), Friedrich Ebert Foundation, German Academic Exchange Service and Qantas Airways (all to S.M.K.). This study was carried out in compliance with the laws of the Commonwealth of Australia under appropriate ethics and research permits issued by the University of Queensland Animal Ethics Committee, NSW Department of Agriculture, NSW Parks and Wildlife Service, and the Australian Nature Conservation Agency (ABBBS).

References

  1. Balmford A (1991) Mate choice on leks. Trends Ecol. Evol. 6:87–92CrossRefGoogle Scholar
  2. Balmford A, Rosser AM, Albon SD (1992) Correlates of female choice in resource-defending antelope. Behav Ecol Sociobiol 31:107–114CrossRefGoogle Scholar
  3. Bart J, Earnst SL (1999) Relative importance of male and territory quality in pairing success of male rock ptarmigan (Lagopus mutus). Behav Ecol Sociobiol 45:355–359CrossRefGoogle Scholar
  4. Beauchamp G (2001) Should vigilance always decrease with group size? Behav Ecol Sociobiol 51:47–52CrossRefGoogle Scholar
  5. Blumstein DT, Daniel JC, McLean IG (2001) Group size effects in quokkas. Aust J Zool 49:641–649CrossRefGoogle Scholar
  6. Boinski S (1988) Sex differences in the foraging behavior of squirrel monkeys in a seasonal habitat. Behav Ecol Sociobiol 23:177–186CrossRefGoogle Scholar
  7. Brooke AP, Solek C, Tualaulelei A (2000) Roosting behavior of colonial and solitary flying foxes in American Samoa (Chiroptera: Pteropodidae). Biotropica 32:338–350Google Scholar
  8. Bumann D, Krause J, Rubenstein D (1997) Mortality risk of spatial positions in animal groups: The danger of being in the front. Behaviour 134:1063–1076CrossRefGoogle Scholar
  9. Burger J, Gochfeld M (1994) Vigilance in African mammals—differences among mothers, other females, and males. Behaviour 131:153–169CrossRefGoogle Scholar
  10. Cameron EZ, Du Toit JT (2005) Social influences on vigilance behaviour in giraffes, Giraffa camelopardalis. Anim Behav 69:1337–1344CrossRefGoogle Scholar
  11. Caro T (2005) Antipredator defenses in birds and mammals. University of Chicago Press, ChicagoGoogle Scholar
  12. Cheney DL, Seyfarth RM (1981) Selective forces affecting the predator alarm calls of vervet monkeys. Behaviour 76:25–61CrossRefGoogle Scholar
  13. Childress MJ, Lung MA (2003) Predation risk, gender and the group size effect: does elk vigilance depend upon the behaviour of conspecifics? Anim Behav 66:389–398CrossRefGoogle Scholar
  14. Colagross AML, Cockburn A (1993) Vigilance and grouping in the eastern grey kangaroo, Macropus giganteus. Aust J Zool 41:325–334CrossRefGoogle Scholar
  15. Di Blanco Y, Hirsch BT (2006) Determinants of vigilance behavior in the ring-tailed coati (Nasua nasua): the importance of within-group spatial position. Behav Ecol Sociobiol 61:173–182CrossRefGoogle Scholar
  16. Domenech J, Senar JC (1999) Are foraging serin (Serinus serinus) females more vigilant than males? The effect of sex ratio. Ardea 87:277–284Google Scholar
  17. Ebensperger LA, Hurtado MAJ, Ramos-Jiliberto R (2006) Vigilance and collective detection of predators in degus (Octodon degus). Ethology 112:879–887CrossRefGoogle Scholar
  18. Eby P, Lunney D (2002) Managing the grey-headed flying-fox Pteropus poliocephalus as a threatened species: a context for the debate. In: Eby PLD (ed) Managing the grey-headed flying-fox as a threatened species in NSW. Royal Zoological Society of New South Wales, Mosman, pp 1–15Google Scholar
  19. Elgar MA (1989) Predator vigilance and group size in mammals and birds: a critical review of the empirical evidence. Biol Rev 64:13–33PubMedCrossRefGoogle Scholar
  20. Ginnett TF, Demment MW (1997) Sex differences in giraffe foraging behavior at two spatial scales. Oecologia 110:291–300CrossRefGoogle Scholar
  21. Grant G, Banack S (1994) Predation on Pteropus tonganus by a barn owl in American Samoa. Aust Mammal 18:77–78Google Scholar
  22. Hall L (2002) Management of flying-fox camps: what have we learnt in the last twenty five years? In: Eby P, Lunney D (eds) Managing the grey-headed flying-fox as a threatened species in NSW. Royal Zoological Society of New South Wales, Mosman, pp 215–224Google Scholar
  23. Hall L, Richards G (2000) Flying foxes: fruit and blossom bats of Australia. University of New South Wales Press, SydneyGoogle Scholar
  24. Hamilton W (1971) Geometry for the selfish herd. J Theor Biol 31:295–311PubMedCrossRefGoogle Scholar
  25. Hirsch B (2002) Social monitoring and vigilance behaviour in brown capuchin monkeys (Cebus apella). Behav Ecol Sociobiol 52:458–464CrossRefGoogle Scholar
  26. Hirsch BT (2007) Costs and benefits of within-group spatial position: a feeding competition model. Q Rev Biol 82:9–27PubMedCrossRefGoogle Scholar
  27. Hovi M, Alatalo RV, Hoglund J, Lundberg A, Rintamaki PT (1994) Lek centre attracts black grouse females. Proc R Soc Lond, B 258:303–305CrossRefGoogle Scholar
  28. Jones ME (1998) The function of vigilance in sympatric marsupial carnivores: the eastern quoll and the Tasmanian devil. Anim Behav 56:1279–1284PubMedCrossRefGoogle Scholar
  29. Koenig A (1998) Visual scanning by common marmosets (Callithrix jacchus): functional aspects and the special role of adult males. Primates 39:85–90CrossRefGoogle Scholar
  30. Krause J (1994) Differential fitness returns in relation to spatial position in groups. Biol Rev Camb Philos Soc 69:187–206PubMedCrossRefGoogle Scholar
  31. Krause J, Ruxton GD (2002) Living in groups. Oxford University Press, OxfordGoogle Scholar
  32. Kunz TH, Robson SK, Nagy KA (1998) Economy of harem maintenance in the greater spear-nosed bat, Phyllostomus hastatus. J Mammal 79:631–642CrossRefGoogle Scholar
  33. Martin PR, Bateson P (1996) Measuring behaviour, 2nd edn. Cambridge University Press, CambridgeGoogle Scholar
  34. Nelson J (1965) Behaviour of Australian Pteropodidae. Anim Behav 13:544–557PubMedCrossRefGoogle Scholar
  35. Pavey CR, Smyth AK, Mathieson MT (1994) The breeding season diet of the powerful owl Ninox strenua at Brisbane, Queensland. Emu 94:278–284Google Scholar
  36. Pays O, Jarman PJ (2008) Does sex affect both individual and collective vigilance in social mammalian herbivores: the case of the eastern grey kangaroo? Behav Ecol Sociobiol 62:757–767CrossRefGoogle Scholar
  37. Pinson D (2009) The flying fox manual, 2nd edn. Stickeebatz Publishing, Murwillumbah, New South Wales, AustraliaGoogle Scholar
  38. Price TD (1984) Sexual selection on body size, territory and plumage variables in a population of Darwin’s finches. Evolution 38:327–341CrossRefGoogle Scholar
  39. Prins HHT, Iason GR (1989) Dangerous lions and nonchalant buffalo. Behaviour 108:262–296CrossRefGoogle Scholar
  40. Ratcliffe F (1932) Notes on the fruit bats (Pteropus spp.) of Australia. J Anim Ecol 1:32–57CrossRefGoogle Scholar
  41. Rattenborg NC, Lima SL, Amlaner CJ (1999) Half-awake to the risk of predation. Nature 397:397–398CrossRefGoogle Scholar
  42. Roberts G (1996) Why individual vigilance declines as group size increases. Anim Behav 51:1077–1086CrossRefGoogle Scholar
  43. Roithmair ME (1994) Male territoriality and female mate selection in the dart-poison frog Epipedobates trivittatus (Dendrobatidae, Anura). Copeia 1:107–115CrossRefGoogle Scholar
  44. Rose LM (1998) Behavioural ecology of white-faced capuchins (Cebus capucinus) in Costa Rica. PhD thesis, Washington University, St. LouisGoogle Scholar
  45. Rose LM, Fedigan LM (1995) Vigilance in white-faced capuchins, Cebus capucinus, in Costa Rica. Anim Behav 49:63–70CrossRefGoogle Scholar
  46. San Jose C, Lovari S, Ferrari N (1996) Temporal evolution of vigilance in roe deer. Behav Processes 38:155–159CrossRefGoogle Scholar
  47. Stearns SC (1992) The evolution of life histories. Oxford University Press, OxfordGoogle Scholar
  48. Steenbeek R, Piek RC, van Buul M, van Hooff J (1999) Vigilance in wild Thomas’s langurs (Presbytis thomasi): the importance of infanticide risk. Behav Ecol Sociobiol 45:137–150CrossRefGoogle Scholar
  49. Thiriet D (2005) The relocation of flying-fox colonies in Queensland. Environmental Planning and Law Journal 22:231–239Google Scholar
  50. Treves A (2000) Theory and method in studies of vigilance and aggregation. Anim Behav 60:711–722PubMedCrossRefGoogle Scholar
  51. van Schaik CP, van Noordwijk MA (1989) The special role of male Cebus monkeys in predation avoidance and its effect on group composition. Behav Ecol Sociobiol 24:265–276CrossRefGoogle Scholar
  52. Waite A (1987) Vigilance in the white-breasted nuthatch: effects of dominance and sociality. Auk 104:429–434Google Scholar
  53. Welbergen JA (2005) The social organisation of the grey-headed flying-fox (Pteropus poliocephalus). PhD thesis. University of Cambridge, Cambridge, UKGoogle Scholar
  54. Welbergen JA (2006) Timing of the evening emergence from day roosts of the grey-headed flying-fox, Pteropus poliocephalus: the effects of predation risk, foraging needs, and social context. Behav Ecol Sociobiol 60:311–322CrossRefGoogle Scholar
  55. Welbergen JA (2008) Variation in twilight predicts the duration of the evening emergence of fruit bats from a mixed-species roost. Anim Behav 75:1543–1550CrossRefGoogle Scholar
  56. Welbergen JA, Klose SM, Markus N, Eby P (2008) Climate change and the effects of temperature extremes on Australian flying-foxes. Proc R Soc, B 275:419–425CrossRefGoogle Scholar
  57. Wilkinson G (1995) Information transfer in bats. Symp Zool Soc Lond 67:345–360Google Scholar

Copyright information

© Springer-Verlag 2008

Authors and Affiliations

  • Stefan M. Klose
    • 1
    • 2
  • Justin A. Welbergen
    • 3
  • Anne W. Goldizen
    • 2
  • Elisabeth K. V. Kalko
    • 1
    • 4
  1. 1.Institute of Experimental EcologyUniversity of UlmUlmGermany
  2. 2.School of Integrative BiologyUniversity of QueenslandBrisbaneAustralia
  3. 3.Department of ZoologyUniversity of CambridgeCambridgeUK
  4. 4.Smithsonian Tropical Research InstituteBalboaPanama

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