Fin whale movements in the Gulf of California, Mexico, from satellite telemetry

Autor: Armando Jaramillo Legorreta, M. Esther Jiménez López, Bruce R. Mate, Daniel M. Palacios, Jorge Urbán R.
Jazyk: angličtina
Rok vydání: 2019
Předmět:
0106 biological sciences
Male
Topography
Population Dynamics
Marine and Aquatic Sciences
Social Sciences
01 natural sciences
Telemetry
Psychology
Mammals
Islands
education.field_of_study
Multidisciplinary
geography.geographical_feature_category
biology
Behavior
Animal
Fin Whale
Animal Behavior
Eukaryota
Satellite Communications
Markov Chains
Fin Whales
Geography
Oceanography
Humpback Whales
Vertebrates
Medicine
Female
Seasons
Monte Carlo Method
Channel (geography)
Research Article
Science
Population
Foraging
Marine Biology
010603 evolutionary biology
Models
Biological
biology.animal
Animals
education
Marine Mammals
Mexico
Shore
Landforms
Behavior
Pacific Ocean
Balaenoptera
Whale
010604 marine biology & hydrobiology
Organisms
Whales
Biology and Life Sciences
Bayes Theorem
Geomorphology
biology.organism_classification
Amniotes
Earth Sciences
Animal Migration
Bay
Zoology
Zdroj: PLoS ONE, Vol 14, Iss 1, p e0209324 (2019)
PLoS ONE
ISSN: 1932-6203
Popis: Fin whales (Balaenoptera physalus) have a global distribution, but the population inhabiting the Gulf of California (GoC) is thought to be geographically and genetically isolated. However, their distribution and movements are poorly known. The goal of this study was to describe fin whale movements for the first time from 11 Argos satellite tags deployed in the southwest GoC in March 2001. A Bayesian Switching State-Space Model was applied to obtain improved locations and to characterize movement behavior as either "area-restricted searching" (indicative of patch residence, ARS) or "transiting" (indicative of moving between patches). Model performance was assessed with convergence diagnostics and by examining the distribution of the deviance and the behavioral parameters from Markov Chain Monte Carlo models. ARS was the predominant mode behavior 83% of the time during both the cool (December-May) and warm seasons (June-November), with slower travel speeds (mean = 0.84 km/h) than during transiting mode (mean = 3.38 km/h). We suggest ARS mode indicates either foraging activities (year around) or reproductive activities during the winter (cool season). We tagged during the cool season, when the whales were located in the Loreto-La Paz Corridor in the southwestern GoC, close to the shoreline. As the season progressed, individuals moved northward to the Midriff Islands and the upper gulf for the warm season, much farther from shore. One tag lasted long enough to document a whale's return to Loreto the following cool season. One whale that was originally of undetermined sex, was tagged in the Bay of La Paz and was photographed 10 years later with a calf in the nearby San Jose Channel, suggesting seasonal site fidelity. The tagged whales moved along the western GoC to the upper gulf seasonally and did not transit to the eastern GoC south of the Midriff Islands. No tagged whales left the GoC, providing supporting evidence that these fin whales are a resident population.
Databáze: OpenAIRE
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