36785 Snake River Sockeye Salmon Captive Broodstock Social Behavior Entity Published / External 30901 Social Behavior - Snake River sockeye salmon captive propagation Data Set Planned 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. Spreadsheet Yes PARR 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. 1 Replicate VARCHAR2 9 Yes No Active The date on which the replicate experiment was run. Units for values are text. VARCHAR2 text 2 Photo # VARCHAR2 5 Yes No Active The sequential photograph number of the photograph being used to obtain the measurements with image processing software. Units for values are Sequence number. VARCHAR2 Sequence number 0-1300 3 Treatment VARCHAR2 1 Yes No Active This 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. Units for values are Alpha characters. VARCHAR2 Alpha characters C, H, A 4 Group # NUMBER 1 Yes No Active This designates the number of fish that are within one body length of one another. Units for values are Count. NUMBER Count 1-3 5 Angle 1 NUMBER No No Active This indicates the angle measured between fish X and Y. Units for values are degree. NUMBER degree 0-180 6 Angle 2 NUMBER No No Active This indicates the angle measured between fish X and Z. Units for values are degree. NUMBER degree 0-180 7 Angle 3 NUMBER No No Active This indicates the angle measured between fish Y and Z. Units for values are degree. NUMBER degree 0-180 8 HH dis 1 NUMBER No No Active This 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. Units for values are pixels. NUMBER pixels 0-2000 9 HH dis 2 NUMBER No No Active This 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. Units for values are pixels. NUMBER pixels 0-2000 10 HH dis 3 NUMBER No No Active This 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. Units for values are pixels. NUMBER pixels 0-2000 11 Longest body length NUMBER No No Active This 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. Units for values are pixels. NUMBER pixels 90-200 gov.noaa.nmfs.inport:36785 Jeffrey Cowen 2017-02-13T16:57:36 SysAdmin InPortAdmin 2022-08-09T17:11:17 2018-02-27 Northwest Fisheries Science Center NWFSC 2725 Montlake Boulevard East Seattle WA 98112 USA 206-860-3200 https://www.nwfsc.noaa.gov 1001 Public No 2018-02-27 1 Year 2019-02-27