Aggressive interactions affect foraging and use of space in a drift foraging salmonid, Salvelinus malma (Salmoniformes: Salmonidae)

Details

• Journal Title:
  Zoological Journal of the Linnean Society
• Personal Author:
  Cullen, Jeffrey L ; Grossman, Gary D
• NOAA Program & Office:
  NOAA General Documents
• Description:
  Although intraspecific interactions likely affect habitat choice and foraging behaviour in animals, our knowledge regarding how these factors interact is frequently limited to either lab or field studies, but not both. We observed pairs of dominant and subordinate drift-foraging Dolly Varden char (Salvelinus malma) in an Alaskan stream, and quantified intraspecific interactions and foraging behaviour. Dominant individuals had higher foraging rates, occupied slower holding velocities and were displaced shorter distances during bouts compared to subordinate individuals. Individuals initiated bouts more frequently from the downstream position, than from lateral or upstream positions. Dominant individuals were more likely to occupy the upstream position after a bout than subordinates, which ensures that dominants have the first opportunity to capture drifting prey.
• Keywords:
  Animal Science And Zoology Ecology, Evolution, Behavior And Systematics Animal Science And Zoology Ecology, Evolution, Behavior And Systematics Animal Science And Zoology Ecology, Evolution, Behavior And Systematics
• Source:
  Zoological Journal of the Linnean Society, 187(3), 774-781
• DOI:
  https://doi.org/10.1093/zoolinnean/zlz050
• ISSN:
  0024-4082 ; 1096-3642
• Format:
  PDF
• Publisher:
  Oxford University Press (OUP)
• Document Type:
  Journal Article
• Rights Information:
  Other
• Compliance:
  Library
• Main Document Checksum:
  urn:sha256:5931ce0b305ec4a8b15ee0f8b2d840dbd8b014aad58e6820254b624a2811d450
• Download URL:
  https://repository.library.noaa.gov/view/noaa/60045/noaa_60045_DS1.pdf
• File Type:
  [PDF - 324.39 KB ]