Increasing numbers of killer whale individuals use fisheries as feeding opportunities within subantarctic populations

• Main Authors: Amelot, Morgane, Tixier, Paul
• Format: Article in Journal/Newspaper
• Language: unknown
• Published: figshare 2021
• Subjects: 60801 Animal Behaviour; FOS Biological sciences; Killer Whale; Killer whale
• Online Access: https://dx.doi.org/10.6084/m9.figshare.16627156.v1; https://figshare.com/articles/online_resource/Increasing_numbers_of_killer_whale_individuals_use_fisheries_as_feeding_opportunities_within_subantarctic_populations/16627156/1

Jolly-Seber capture-mark-recapture models to estimate Crozet regular and type-D Killer whales populations. All codes are available for the simulation and the real data. (1) Simulation code (codesimul.R) is running alone (2) Real data code (code_vraidata_revfin.R). It makes use of three matrices that change depending on the ecotype: - The Capture History (CH_2106_m.csv, CH_2106_d.csv), rows correspond to individuals and columns to years. For regular killer whales this matrix contains 3 possible observations (observed from the coast, observed depredating, non observed) and 2 observations for Type-D killer whales (observed depredating, non observed) - The Marking status (Mk_2106_m.csv, Mk_2106_d.csv), rows correspond to individuals and columns to years. For both ecotype they contain three possible marking status as described in the ESM. - The maturity status (St_2106_m.csv, St_2106_d.csv), rows correspond to individuals and columns to years. For both ecotype they contain four different state (non identify, new-born, juvenile and adult). Two other matrices are the same for bot ecotype - The standardized effort (Effort_stand_boat.csv) contains the yearly effort divided by the maximum number of photographs taken during the study period. - The state matrix (z_init_cro2705.csv) is used to initiate the state matrix from the models.