TY - JOUR
T1 - Diving deeper into the underlying white shark behaviors at Guadalupe Island, Mexico
AU - Aquino-Baleytó, Marc
AU - Leos-Barajas, Vianey
AU - Adam, Timo
AU - Hoyos-Padilla, Mauricio
AU - Santana-Morales, Omar
AU - Galván-Magaña, Felipe
AU - González-Armas, Rogelio
AU - Lowe, Christopher G.
AU - Ketchum, James T.
AU - Villalobos, Héctor
N1 - Publisher Copyright:
© 2021 The Authors. Ecology and Evolution published by John Wiley & Sons Ltd.
PY - 2021/11
Y1 - 2021/11
N2 - Fine-scale movement patterns are driven by both biotic (hunting, physiological needs) and abiotic (environmental conditions) factors. The energy balance governs all movement-related strategic decisions. Marine environments can be better understood by considering the vertical component. From 24 acoustic trackings of 10 white sharks in Guadalupe Island, this study linked, for the first time, horizontal and vertical movement data and inferred six different behavioral states along with movement states, through the use of hidden Markov models, which allowed to draw a comprehensive picture of white shark behavior. Traveling was the most frequent state of behavior for white sharks, carried out mainly at night and twilight. In contrast, area-restricted searching was the least used, occurring primarily in daylight hours. Time of day, distance to shore, total shark length, and, to a lesser extent, tide phase affected behavioral states. Chumming activity reversed, in the short term and in a nonpermanent way, the behavioral pattern to a general diel vertical pattern.
AB - Fine-scale movement patterns are driven by both biotic (hunting, physiological needs) and abiotic (environmental conditions) factors. The energy balance governs all movement-related strategic decisions. Marine environments can be better understood by considering the vertical component. From 24 acoustic trackings of 10 white sharks in Guadalupe Island, this study linked, for the first time, horizontal and vertical movement data and inferred six different behavioral states along with movement states, through the use of hidden Markov models, which allowed to draw a comprehensive picture of white shark behavior. Traveling was the most frequent state of behavior for white sharks, carried out mainly at night and twilight. In contrast, area-restricted searching was the least used, occurring primarily in daylight hours. Time of day, distance to shore, total shark length, and, to a lesser extent, tide phase affected behavioral states. Chumming activity reversed, in the short term and in a nonpermanent way, the behavioral pattern to a general diel vertical pattern.
KW - Bayesian inference
KW - behavioral states
KW - energy costs
KW - movement strategies
KW - telemetry
UR - http://www.scopus.com/inward/record.url?scp=85117065624&partnerID=8YFLogxK
U2 - 10.1002/ece3.8178
DO - 10.1002/ece3.8178
M3 - Artículo
C2 - 34765151
AN - SCOPUS:85117065624
SN - 2045-7758
VL - 11
SP - 14932
EP - 14949
JO - Ecology and Evolution
JF - Ecology and Evolution
IS - 21
ER -