Diving deeper into the underlying white shark behaviors at Guadalupe Island, Mexico.

Autor: Aquino-Baleytó M; Instituto Politécnico Nacional, Centro Interdisciplinario de Ciencias Marinas La Paz Mexico., Leos-Barajas V; University of Toronto Toronto ON Canada., Adam T; University of St Andrews St Andrews UK., Hoyos-Padilla M; Pelagios-Kakunjá La Paz Mexico., Santana-Morales O; Ecocimati AC Ensenada Mexico., Galván-Magaña F; Instituto Politécnico Nacional, Centro Interdisciplinario de Ciencias Marinas La Paz Mexico., González-Armas R; Instituto Politécnico Nacional, Centro Interdisciplinario de Ciencias Marinas La Paz Mexico., Lowe CG; Department of Biological Sciences California State University Long Beach Long Beach California USA., Ketchum JT; Pelagios-Kakunjá La Paz Mexico., Villalobos H; Instituto Politécnico Nacional, Centro Interdisciplinario de Ciencias Marinas La Paz Mexico.
Jazyk: angličtina
Zdroj: Ecology and evolution [Ecol Evol] 2021 Oct 18; Vol. 11 (21), pp. 14932-14949. Date of Electronic Publication: 2021 Oct 18 (Print Publication: 2021).
DOI: 10.1002/ece3.8178
Abstrakt: 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.
Competing Interests: The authors declare that they have no competing interests.
(© 2021 The Authors. Ecology and Evolution published by John Wiley & Sons Ltd.)
Databáze: MEDLINE
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