This "Sea_star_kinematics_2021_readme.txt" file was generated on 2021-11-12 by AS Johnson GENERAL INFORMATION 1. Title of Dataset: Kinematics of sea star legged locomotion 2. Author Information A. Principal Investigator Contact Information Name: Amy S. Johnson Institution: Bowdoin College Address: 6500 College Station, Biology Dept, Brunswick, ME 04011 Email: ajohnson@bowdoin.edu B. Associate or Co-investigator Contact Information Name: Olaf Ellers Institution: Bowdoin College Address: 6500 College Station, Biology Dept, Brunswick, ME 04011 Email: oellers@bowdoin.edu 3. Date of data collection: 2015-06-05 to 2015-07-31; 2017-06-21 to 2017-08-07 4. Geographic location of data collection: Adult Asterias forbesi (Desor 1848) were hand-collected in rocky intertidal and shallow subtidal areas adjacent to Basin Point, Harpswell, ME (43.74°N, −70.04°W) and the Rockland Breakwater, Rockland, ME (44.11°N, −69.08°W). Sea stars were maintained and filmed at Bowdoin College in Brunswick, Maine (43.9140° N, 69.9670° W) and at Bowdoin's Schiller Coastal Studies Center in Harpswell, Maine (43.7886° N, 69.9577° W) 5. Information about funding sources that supported the collection of the data: Funding for this study was provided by a Bowdoin College Andrew W. Mellon Award faculty leave supplement to A. Johnson and Bowdoin Summer Research Fellowships to seven Bowdoin undergraduate students. SHARING/ACCESS INFORMATION a. Licenses/restrictions placed on the data: None b. Links to publications that cite or use the data: In press with Journal of Experimental Biology, link to be provided upon publication. c. Links to other publicly accessible locations of the data: None d. Links/relationships to ancillary data sets: None e. Was data derived from another source? No 6. Recommended citation for this dataset: Ellers, O., Khoriaty, M., & Johnson, A. S. (2021). Kinematics of sea star legged locomotion. Journal of Experimental Biology. doi:10.5061/dryad.2547d7wrq DATA & FILE OVERVIEW 1. File List: Sea_star_kinematics_2021_readme.txt seastar_wt_underwater_wt.csv seastar1_2015_DSC_0057.csv seastar2_2015_DSC_0058.csv seastar3_2015_DSC_0076d.csv seastar2_2015_DSC_0066.csv seastar4_2015_DSC_0110.csv seastar4_2015_DSC_0113.csv seastar3_2015_DSC_0078c.csv seastar2_2015_DSC_0060.csv seastar5_2015_DSC_0115a.csv seastar4_2015_DSC_0102.csv seastar6_2015_DSC_0124.csv seastar7_2015_DSC_0128b.csv seastar7_2015_DSC_0136.csv seastar5_2015_DSC_0115b.csv seastar7_2015_DSC_0142.csv seastar7_2015_DSC_0128a.csv seastar8_2015_DSC_0151a.csv seastar6_2015_DSC_0123.csv seastar10_2015_DSC_0159b.csv seastar12_2015_DSC_0199.csv seastar8_2015_DSC_0153.csv seastar10_2015_DSC_0193.csv seastar11_2015_DSC_0198.csv seastar13_2015_DSC_0201.csv seastar13_2015_DSC_0202.csv seastar14_2015_DSC_0232.csv seastar9_2015_DSC_0158.csv seastar15_2015_DSC_0233.csv seastar15_2015_DSC_0237b.csv seastar16_2015_DSC_0240a.csv seastar14_2015_DSC_0203.csv seastar16_2015_DSC_0241a.csv seastar16_2015_DSC_0246.csv seastar16_2015_DSC_0254.csv seastar16_2015_DSC_0251b.csv seastar16_2015_DSC_0237c.csv seastar17_2015_DSC_0265.csv seastar17_2015_DSC_0263.csv seastar18_2015_DSC_0266.csv seastar18_2015_DSC_0272.csv seastar18_2015_DSC_0270.csv seastar19_2015_DSC_0275.csv seastar19_2015_DSC_0276.csv seastar19_2015_DSC_0302.csv seastar20_2015_DSC_0310b.csv seastar20_2015_DSC_0375.csv seastar20_2015_DSC_0377.csv seastar20_2015_DSC_0378.csv seastar21_2015_DSC_0379.csv seastar19_2015_DSC_0284.csv seastar22_2015_DSC_0384.csv seastar18_2015_DSC_0269.csv seastar22_2015_DSC_0385.csv seastar21_2015_DSC_0380.csv seastar23_2015_DSC_0392.csv seastar19_2015_DSC_0310a.csv seastar24_2017_DSC_0056.csv seastar23_2015_DSC_0415c.csv seastar23_2015_DSC_0418.csv seastar22_2015_DSC_0390.csv seastar42_2017_DSC_0576.csv seastar42_2017_DSC_0579.csv seastar42_2017_DSC_0577.csv seastar42_2017_DSC_0583.csv seastar44_2017_DSC_0596.csv seastar44_2017_DSC_0597.csv seastar43_2017_DSC_0585.csv seastar44_2017_DSC_0600.csv seastar43_2017_DSC_0584.csv seastar45_2017_DSC_0602.csv seastar46_2017_DSC_0608.csv seastar46_2017_DSC_0605.csv seastar48_2017_DSC_0614.csv seastar44_2017_DSC_0599.csv seastar48_2017_DSC_0619.csv seastar48_2017_DSC_0618.csv seastar49_2017_DSC_0620.csv seastar50_2017_DSC_0634.csv seastar50_2017_DSC_0645.csv seastar50_2017_DSC_0646.csv seastar47_2017_DSC_0613.csv seastar51_2017_DSC_0650.csv seastar49_2017_DSC_0623.csv seastar52_2017_DSC_0652.csv seastar52_2017_DSC_0653.csv seastar53_2017_DSC_0654.csv seastar49_2017_DSC_0622.csv seastar53_2017_DSC_0659.csv seastar53_2017_DSC_0660.csv seastar49_2017_DSC_0632.csv seastar54_2017_DSC_0664.csv seastar54_2017_DSC_0663.csv 2. Relationship between files, if important: • There is one file that gives the mass and underwater weight of each sea star filmed. • There are 128 .csv files with data from side and bottom films for 54 unique sea stars, each filmed one to several times. Open Source Physics software called Tracker 5.1.3 by Douglas Brown was used to track the apical point from the side and the mouth from the bottom. The data files give 5 columns: time, x position from the bottom view, y position from the bottom view, x position from the side view and z position from the side view. The name of each file indicates which sea star that file pertains to and also gives the DSC number that indexes the pair of side and bottom film data in each file. 3. Additional related data collected that was not included in the current data package: None 4. Are there multiple versions of the dataset? No METHODOLOGICAL INFORMATION 1. Description of methods used for collection/generation of data: • We took video of ambulating sea stars, Asterias forbesi, in a plexiglass raceway. There were two cameras simultaneously recording from the side and from underneath at a nominal frame rate of 30 Hz. There are 128 pairs of side and bottom films and 54 unique sea stars each filmed one to several times. Open Source Physics software called Tracker 5.1.3 by Douglas Brown was used to track the apical point from the side and the mouth from the bottom. 2. Methods for processing the data: • Mass and underwater weights were typed directly into an excel spreadsheet during weighing. • Time and position data were exported from Open Source Physics software called Tracker 5.1.3 by Douglas Brown 3. Instrument- or software-specific information needed to interpret the data: • No particular instrument or software needed. 4. Standards and calibration information, if appropriate: See column headings. 5. Environmental/experimental conditions: Maintained and filmed in natural sea water at 12–13°C and 30–33 ppt. 6. Describe any quality-assurance procedures performed on the data: Described in detail in manuscript and supplemental materials for manuscript. DATA-SPECIFIC INFORMATION FOR: seastar_wt_underwater_wt.csv 1. Number of variables: 5 2. Number of cases/rows: 55 3. Variable List: seastar;species;year;mass_(g);underwater_weight_(N) 4. Missing data codes: There are no missing data. 5. Specialized formats or other abbreviations used: seastar = unique individual sea star ID; g = grams; N = Newtons DATA-SPECIFIC INFORMATION FOR: Files of form: "seastar#_DATE_DSC_0###.csv" There are 128 of these files, one for each pair of videos. 1. Number of variables: 5 2. Number of cases/rows: depends on length of film; time between each row is 1/30 second. 3. Variable List: t_(s); x_(m)_bottom view; y_(m)_bottom view; x_(m)_side view; z_(m)_side view 4. Missing data codes: There are no missing data. 5. Specialized formats or other abbreviations used: t = time; s = seconds; x = x-direction (forward/backward); m = meters; y = y-direction (side-to-side); z = z-direction (up/down)