This Freymiller-et-al-2021-readme.txt file was generated on 2021-11-26 by G.A. Freymiller GENERAL INFORMATION 1. Title of Dataset: "Comparative analysis of Dipodomys species indicates that kangaroo rat hindlimb anatomy is adapted for rapid evasive leaping" 2. Author Information A. Principal Investigator Contact Information Name: Grace A. Freymiller Institution: San Diego State University & University of California, Riverside Address: 5500 Campanile Dr., San Diego, CA 92182 Email: gfreymiller@sdsu.edu B. Associate or Co-investigator Contact Information Name: Rulon W. Clark Institution: San Diego State University & University of California, Riverside Address: 5500 Campanile Dr., San Diego, CA 92182 Email: rclark@sdsu.edu 3. Date of data collection: 2018-05-20 through 2020-05-10 4. Geographic location of data collection: Rodeo, New Mexico, USA; Animas, New Mexico, USA; Zzyzx, California, USA; Rancho Jamul, California, USA 5. Information about funding sources that supported the collection of the data: American Society of Mammalogists (Grant-in-Aid of Research to GAF), American Philosophical Society (Lewis & Clark Fund for Field Exploration to GAF), Animal Behavior Society (Student Research Grant to MDW), National Science Foundation (IOS-1856404 to RWC and TEH) and San Diego State University (UGP 242557 to RWC and Graduate Student Travel Fund to GAF) 6. Publication information: Data are published in Freymiller et al. (2021) Comparative analysis of Dipodomys species indicates that kangaroo rat hindlimb anatomy is adapted for rapid evasive leaping. Journal of Anatomy, https://doi.org/10.1111/joa.13567 DATA & FILE OVERVIEW 1. File List: 1. Freymiller_et_al_-_jump_data.csv (jump performance metrics of kangaroo rat escape maneuvers) 2. Freymiller_et_al_-_muscle_data.csv (hind limb muscle metrics from dissected kangaroo rat specimens) 3. Freymiller_et_al_-_segment_data.csv (hind limb bone metrics from dissected kangaroo rat specimens) 4. Freymiller_et_al_-_tendon_data.csv (hind limb tendon metrics from dissected kangaroo rat specimens) 2. Are there multiple versions of the dataset? No DATA-SPECIFIC INFORMATION FOR: Freymiller_et_al_-_jump_data.csv 1. Number of variables: 8 2. Number of cases/rows: 84 cases 3. Variable List: ID - fingerling ear tag individual identification number (no units) SPP - species of the individual (DIDE= Dipodomys deserti ; DIME= Dipodomys merriami ; DISP= Dipodomys spectabilis) POP - population/location where the individual was studied (no units) MASS - mass of the whole animal (grams) CONTACT - amount of time the individual spent in contact with the ground during the initial jump (milliseconds) H_DISP - horizontal displacement of the jump (meters) HEIGHT - maximum height of the jump (meters) ACC - average acceleration of the jump (meters per second^2) 4. Missing data codes: Missing data indicated with 'NA' DATA-SPECIFIC INFORMATION FOR: Freymiller_et_al_-_muscle_data.csv 1. Number of variables: 38 2. Number of cases/rows: 18 cases 3. Variable List: Spp - species of the individual (DIDE= Dipodomys deserti ; DIME= Dipodomys merriami ; DISP= Dipodomys spectabilis ; DISI= Dipodomys simulans) Pop - population/location where the individual was studied (no units) Mass - mass of the whole animal (grams) BF_mass - mass of the biceps femoris (grams) BF_csa - cross-sectional area of the biceps femoris (square centimeters) SM_mass - mass of the semimembranosus (grams) SM_csa - cross-sectional area of the semimembranosus (square centimeters) ST_mass - mass of the semitendinosus (grams) ST_csa - cross-sectional area of the semitendinosus (square centimeters) HAM_mass - mass of the hamstrings muscle group (biceps femoris, semimembranosus, and semitendinosus) (grams) GLU_mass - mass of the gluteal muscle group (grams) RF_mass - mass of the rectus femoris (grams) RF_csa - cross-sectional area of the rectus femoris (square centimeters) VL_mass - mass of the vastus lateralis (grams) VL_csa - cross-sectional area of the vastus lateralis (square centimeters) VM_mass - mass of the vastus medialis (grams) VM_csa - cross-sectional area of the vastus medialis (square centimeters) QUAD_mass - mass of the quadriceps muscle group (rectus femoris, vastus lateralis, vastus medialis) (grams) SOL_mass - mass of the soleus (grams) SOL_csa - cross-sectional area of the soleus (square centimeters) LG_mass - mass of the lateral head of the gastrocnemius (grams) LG_csa - cross-sectional area of the lateral head of the gastrocnemius (square centimeters) MG_mass - mass of the medial head of the gastrocnemius (grams) MG_csa - cross-sectional area of the medial head of the gastrocnemius (square centimeters) PL_mass - mass of the plantaris (grams) PL_csa - cross-sectional area of the plantaris (square centimeters) PLFX_mass - mass of the plantar flexor muscle group (soleus, medial & lateral heads of the gastrocnemius, and the plantaris) (grams) TA_mass - mass of the tibialis anterior muscle (grams) DF_mass - mass of the digit flexor muscle group (grams) BF_fl - fiber length of the biceps femoris (millimeters) SM_fl - fiber length of the semimembranosus (millimeters) ST_fl - fiber length of the semitendinosus (millimeters) RF_fl - fiber length of the rectus femoris (millimeters) VL_fl - fiber length of the vastus lateralis (millimeters) VM_fl - fiber length of the vastus medialis (millimeters) LG_fl - fiber length of the lateral head of the gastrocnemius (millimeters) MG_fl - fiber length of the medial head of the gastrocnemius (millimeters) PL_fl - fiber length of the plantaris (millimeters) 4. Missing data codes: Missing data indicated with 'NA' DATA-SPECIFIC INFORMATION FOR: Freymiller_et_al_-_segment_data.csv 1. Number of variables: 10 2. Number of cases/rows: 18 cases 3. Variable List: Species - species of the individual (DIDE= Dipodomys deserti ; DIME= Dipodomys merriami ; DISP= Dipodomys spectabilis ; DISI= Dipodomys simulans) Pop - population/location where the individual was studied (no units) Mass - mass of the whole animal (grams) Fem - functional segment length of the femur (millimeters) Tib - functional segment length of the tibia (millimeters) Meta - functional segment length of the metatarsals (millimeters) Phal - functional segment length of the longest toe (millimeters) Calc - functional segment length of the calcaneus (millimeters) Ratio - lever arm ratio calculated as calcaneus length / (metatarsal length + 1/2 phalanges length) (no units) Ratio2 - lever arm ratio calculated as (metatarsal length + 1/2 phalanges length) / calcaneus length (no units) 4. Missing data codes: Missing data indicated with 'NA' DATA-SPECIFIC INFORMATION FOR: Freymiller_et_al_-_tendon_data.csv 1. Number of variables: 6 2. Number of cases/rows: 18 cases 3. Variable List: Species - species of the individual (DIDE= Dipodomys deserti ; DIME= Dipodomys merriami ; DISP= Dipodomys spectabilis ; DISI= Dipodomys simulans) Pop - population/location where the individual was studied (no units) Mass_b - mass of the whole animal (grams) Mass_t - mass of the plantarflexor tendon (grams) Length - length of the plantarflexor tendon (millimeters) CSA - cross-sectional area of the plantarflexor tendon (square centimeters) 4. Missing data codes: Missing data indicated with 'NA'