Paper Search Console

Home Search Page About Contact

Journal Title

Title of Journal: Behav Ecol Sociobiol

Search In Journal Title:

Abbravation: Behavioral Ecology and Sociobiology

Search In Journal Abbravation:

Publisher

Springer-Verlag

Search In Publisher:

DOI

10.1007/bf00869650

Search In DOI:

ISSN

1432-0762

Search In ISSN:
Search In Title Of Papers:

Hunted hunters Effect of group size on predation

Authors: Bianca Unglaub Jasmin Ruch Marie E Herberstein Jutta M Schneider
Publish Date: 2013/03/08
Volume: 67, Issue: 5, Pages: 785-794
PDF Link

Abstract

A reduced predation risk is considered to be a major adaptive advantage of sociality While most studies are concerned with nonpredatory prey species groupliving predators are likely to face similar threats from higherorder predators We studied the relationship between group size and predation risk in the subsocial crab spider Diaea ergandros by testing predictions from theoretical models including attack abatement as well as the formation of protective retreats In a field survey we found predatory clubionid spiders in 35  of the D ergandros nests and as predicted nest size did not correlate with predator presence In a subsequent laboratory experiment we observed survival probability nest construction activity and feeding behaviour including weight development between groups of different sizes as well as in the absence or presence of a predator Large groups had an advantage in terms of survival and growth compared to smaller groups or single individuals They also built significantly larger nests than smaller groups supporting the idea of protective retreat formation being an adaptive benefit to group living Even though clubionids did attack D ergandros they did not significantly affect overall mortality of D ergandros The feeding experiment showed that spiders fed on a larger proportion of flies in the presence of a predator However these groups gained significantly less weight compared to the control groups indicating that the potential predators not only act as predators but also as food competitors constituting a twofold cost for D ergandrosWe thank Theo Evans for fruitful discussions prior and during the project Moreover we thank Raelene Giffney for help with weighing the spiderlings Andrew P Allen and Stano Pekár for the statistical advice and two anonymous reviewers for constructive comments on the manuscript BU would like to express her special thanks to Michael Zorawski for his support during the entire project BU was funded by the German Academic Exchange Service DAAD through a PROMOS scholarship JR was funded by an International Scholarship of Macquarie University


Keywords:

References


.
Search In Abstract Of Papers:
Other Papers In This Journal:

  1. Inbreeding and local mate competition in the ant Cardiocondyla batesii
  2. Honeybees use a Lévy flight search strategy and odour-mediated anemotaxis to relocate food sources
  3. Evolution of the fast start response in the cavefish Astyanax mexicanus
  4. Female oxidative status, egg antioxidant protection and eggshell pigmentation: a supplemental feeding experiment in great tits
  5. Secondary sex ratios do not support maternal manipulation: extensive data from laboratory colonies of spiny mice (Muridae: Acomys )
  6. Wildlife contact analysis: emerging methods, questions, and challenges
  7. Prior experience with eggs laid by non-nestmate queens induces egg acceptance errors in ant workers
  8. Ecological and hormonal correlates of antipredator behavior in adult Belding’s ground squirrels ( Spermophilus beldingi )
  9. Male spottail darters ( Etheostoma squamiceps ) do not use chemical or positional cues to discriminate between sired and foster eggs
  10. Parentally biased favouritism in relation to offspring sex in zebra finches
  11. Feeding and aggressive behaviours in juvenile coho salmon ( Oncorhynchus kisutch ) under chemically-mediated risk of predation
  12. Experimentally elevated plasma levels of testosterone do not increase male reproductive success in blue tits
  13. Strategic exploitation in a socially parasitic bee: a benefit in waiting?
  14. Underwater and above-water search patterns of an Arctic seabird: reduced searching at small spatiotemporal scales
  15. Reproductive trade-offs from mating with a successful male: the case of the tephritid fly Anastrepha obliqua
  16. Heavier birds react faster to predators: individual differences in the detection of stalking and ambush predators
  17. Bright moonlight triggers natal dispersal departures
  18. Does leadership indicate male quality in Neoconocephalus katydids?
  19. Sexual selection favours small and symmetric males in the polygynous greater sac-winged bat Saccopteryx bilineata (Emballonuridae, Chiroptera)
  20. Condition dependence of male display coloration in a jumping spider ( Habronattus pyrrithrix )
  21. Chemical mimicry in an incipient leaf-cutting ant social parasite
  22. Queen acceptance and the complexity of nestmate discrimination in the Argentine ant
  23. Exaggerated orientation scatter of nocturnal passerine migrants close to breeding grounds: comparisons between seasons and latitudes
  24. Love bites: male fang use during coercive mating in wolf spiders
  25. Complex call in male rock hyrax ( Procavia capensis ): a multi-information distributing channel
  26. Sex differences in the movement patterns of free-ranging chimpanzees ( Pan troglodytes schweinfurthii ): foraging and border checking
  27. Sperm competition and evidence of sperm fertilization patterns in the carrion ball-roller beetle Canthon cyanellus cyanellus LeConte (Scarabaeidae: Scarabaeinae)
  28. Laying-order effects on sperm numbers and on paternity: comparing three passerine birds with different life histories
  29. Variable flight distance to resources results in changing sex allocation decisions, Megachile rotundata
  30. Olfactory eavesdropping between two competing stingless bee species
  31. Sympatric species of threespine stickleback differ in their performance in a spatial learning task
  32. Differing rates of extra-group paternity between two populations of the Australian magpie ( Gymnorhina tibicen )
  33. Sexual dimorphism and the mating ecology of polar bears ( Ursus maritimus ) at Svalbard
  34. The meat-scrap hypothesis: small quantities of meat may promote cooperative hunting in wild chimpanzees ( Pan troglodytes )
  35. Preference for male traits in female wolf spiders varies with the choice of available males, female age and reproductive state
  36. Weighting waiting in collective decision-making
  37. A field test of the Hamilton–Zuk hypothesis in the Trinidadian guppy ( Poecilia reticulata )
  38. Female philopatry and its social benefits among Bornean orangutans
  39. Older can be better: physiological costs of paternal investment in the Florida scrub-jay
  40. The behavioural consequences of translocation: how do invasive cane toads ( Rhinella marina ) respond to transport and release to novel environments?
  41. Aggressive thresholds in Dendropsophus ebraccatus : habituation and sensitization to different call types
  42. A good day to die: bridging the gap between costs and benefits of parental care
  43. Do male plumage and song characteristics influence female off-territory forays and paternity in the hooded warbler?
  44. Network structure and prevalence of Cryptosporidium in Belding’s ground squirrels
  45. Guppies as heterospecific facilitators: a precursor of exploratory behavior?

Search Result: