noaa-fisheries-nwfsc-data-socrata/snake-river-sockeye-salmon-captive-broodstock-un4d-67bt

  • artificial propagation
  • salmon
  • snake river

Snake River Sockeye Salmon Captive Broodstock Social Behavior

Snake River Sockeye Salmon Captive Broodstock Social Behavior

InPort Dataset ID: 30901

InPort Entity ID: 36785

The study examines the effect of a point source food supply on the social behavior of sockeye salmon (Oncorhynchus nerka) reared in a conservation hatchery setting. The three treatments consisted of a control in which fish were not fed, an experimental treatment in which fish were fed using point source automated feeders and an experimental treatment in which fish were hand fed. Each replicate consisted of placing three fish in a 3.6 m grey circular tank, allowing them overnight to recover from the effects of handling, and starting at 0900 the next morning photographing them at half hour intervals until 13 photographs were acquired. The photographs were examined for grouping, mean angle between fish and mean distance between fish. General observations made over the course of the study and analysis of the photographic data indicate Snake River sockeye salmon vary their social behavior from solitary to paired to aggregated to schooled and the presence of a point source food supply increases aggression, but does not elicit territorial defense.

Columns

NameSocrata field nameColumn name in sgr mountData typeDescription
Angle 2angel_2angel_2NumberThis indicates the angle measured between fish X and Z
Photo #photo_numberphoto_numberNumberThe sequential photograph number of the photograph being used to obtain the measurements with image processing software.
ReplicatereplicatereplicateTextThe date on which the replicate experiment was run
Longest Body Lengthlongest_body_lengthlongest_body_lengthNumberThis indicates the number of pixels that were counted between the tip of the tail and the tip of the nose of longest fish observed in the photograph
Group #group_numbergroup_numberNumberThis designates the number of fish that are within one body length of one another
TreatmenttreatmenttreatmentTextThis designates which experimental treatment is associated with the record. C indicates this is a control treatment in which the fish were not fed during the observaton period, H indicates this is a treatment in which the fish were hand fed during the observation period, and A indicates this is a treatment in which the fish were fed with automated feeders during the observation period.
HH Dis 3hh_dis_3hh_dis_3NumberThis indicates the number of pixels that were counted in the distance between the tip of the nose of fish Y and the tip of the nose of fish Z.
HH Dis 2hh_dis_2hh_dis_2NumberThis indicates the number of pixels that were counted in the distance between the tip of the nose of fish X and the tip of the nose of fish Z.
Angle 1angle_1angle_1NumberThis indicates the angle measured between fish X and Y
HH Dis 1hh_dis_1hh_dis_1NumberThis indicates the number of pixels that were counted in the distance between the tip of the nose of fish X and the tip of the nose of fish Y.
Angle 3angel_3angel_3NumberThis indicates the angle measured between fish Y and Z

Upstream Metadata