How acoustics informs understanding of foraging behavior and effects of vessels and noise on killer whales

2019 ◽  
Vol 146 (4) ◽  
pp. 2897-2897
Author(s):  
Marla M. Holt ◽  
Jennifer B. Tennessen ◽  
Brad Hanson ◽  
Candice Emmons ◽  
Deborah Giles ◽  
...  
Keyword(s):  
Foraging Behavior ◽  
Killer Whales

scholarly journals Vessel traffic disrupts the foraging behavior of southern resident killer whales Orcinus orca

2009 ◽  
Vol 6 ◽  
pp. 211-221 ◽  
Author(s):  
D Lusseau ◽  
DE Bain ◽  
R Williams ◽  
JC Smith
Keyword(s):  
Foraging Behavior ◽  
Orcinus Orca ◽  
Killer Whales

Sound and movement data from two overlapping populations of killer whales reveal noise effects on foraging behavior

2021 ◽  
Vol 150 (4) ◽  
pp. A250-A250
Author(s):  
Jennifer B. Tennessen ◽  
Marla M. Holt ◽  
Brianna Wright ◽  
M. Bradley M. Hanson ◽  
Candice Emmons ◽  
...  
Keyword(s):  
Foraging Behavior ◽  
Killer Whales ◽  
Noise Effects ◽  
Movement Data

scholarly journals Hidden Markov models reveal temporal patterns and sex differences in killer whale behavior

2019 ◽  
Vol 9 (1) ◽  
Author(s):  
Jennifer B. Tennessen ◽  
Marla M. Holt ◽  
Eric J. Ward ◽  
M. Bradley Hanson ◽  
Candice K. Emmons ◽  
...  
Keyword(s):  
Sex Differences ◽  
Foraging Behavior ◽  
Markov Models ◽  
Hidden Markov ◽  
Movement Behavior ◽  
Conservation Strategies ◽  
Markov Modeling ◽  
Killer Whales ◽  
Suction Cup ◽  
Behavioral States

Abstract Behavioral data can be important for effective management of endangered marine predators, but can be challenging to obtain. We utilized suction cup-attached biologging tags equipped with stereo hydrophones, triaxial accelerometers, triaxial magnetometers, pressure and temperature sensors, to characterize the subsurface behavior of an endangered population of killer whales (Orcinus orca). Tags recorded depth, acoustic and movement behavior on fish-eating killer whales in the Salish Sea between 2010–2014. We tested the hypotheses that (a) distinct behavioral states can be characterized by integrating movement and acoustic variables, (b) subsurface foraging occurs in bouts, with distinct periods of searching and capture temporally separated from travel, and (c) the probabilities of transitioning between behavioral states differ by sex. Using Hidden Markov modeling of two acoustic and four movement variables, we identified five temporally distinct behavioral states. Persistence in the same state on a subsequent dive had the greatest likelihood, with the exception of deep prey pursuit, indicating that behavior was clustered in time. Additionally, females spent more time at the surface than males, and engaged in less foraging behavior. These results reveal significant complexity and sex differences in subsurface foraging behavior, and underscore the importance of incorporating behavior into the design of conservation strategies.

Effects of vessels and their sounds on the foraging behavior of endangered killer whales (Orcinus orca)

2020 ◽  
Vol 148 (4) ◽  
pp. 2685-2685
Author(s):  
Marla M. Holt ◽  
Jennifer Tennessen ◽  
M. Bradley M. Hanson ◽  
Candice Emmons ◽  
Deborah Giles ◽  
...  
Keyword(s):  
Foraging Behavior ◽  
Orcinus Orca ◽  
Killer Whales

Foraging behavior of an estuarine predator, the blue crab Callinectes sapidus in a patchy environment

Ecography ◽  
2000 ◽  
Vol 23 (1) ◽  
pp. 21-31 ◽  
Author(s):  
Mary E. Clark ◽  
Thomas G. Wolcott ◽  
Donna L. Wolcott ◽  
Anson H. Hines
Keyword(s):  
Foraging Behavior ◽  
Blue Crab ◽  
Callinectes Sapidus ◽  
Patchy Environment

Personality in captive killer whales (Orcinus orca): A rating approach based on the five-factor model.

2019 ◽  
Vol 133 (2) ◽  
pp. 252-261 ◽  
Author(s):  
Yulán Úbeda ◽  
Sara Ortín ◽  
Judy St. Leger ◽  
Miquel Llorente ◽  
Javier Almunia
Keyword(s):  
Factor Model ◽  
Five Factor Model ◽  
Orcinus Orca ◽  
Killer Whales

Human foraging behavior in external and internal search tasks

2010 ◽  
Author(s):  
Andreas Wilke ◽  
Benjamin Scheibehenne ◽  
Rui Mata ◽  
Peter M. Todd ◽  
H. Clark Barrett
Keyword(s):  
Foraging Behavior ◽  
Search Tasks ◽  
Human Foraging

Inter-individual differences in the foraging behavior of breeding Adélie penguins are driven by individual quality and sex

2020 ◽  
Vol 636 ◽  
pp. 189-205
Author(s):  
A Lescroël ◽  
PO’B Lyver ◽  
D Jongsomjit ◽  
S Veloz ◽  
KM Dugger ◽  
...  
Keyword(s):  
Individual Differences ◽  
Foraging Behavior ◽  
Ross Sea ◽  
Individual Quality ◽  
High Quality ◽  
Breeding Experience ◽  
Age Related ◽  
Demographic Traits ◽  
Iteroparous Species ◽  
Adélie Penguins

Inter-individual differences in demographic traits of iteroparous species can arise through learning and maturation, as well as from permanent differences in individual ‘quality’ and sex-specific constraints. As the ability to acquire energy determines the resources an individual can allocate to reproduction and self-maintenance, foraging behavior is a key trait to study to better understand the mechanisms underlying these differences. So far, most seabird studies have focused on the effect of maturation and learning processes on foraging performance, while only a few have included measures of individual quality. Here, we investigated the effects of age, breeding experience, sex, and individual breeding quality on the foraging behavior and location of 83 known-age Adélie penguins at Cape Bird, Ross Sea, Antarctica. Over a 2 yr period, we showed that (1) high-quality birds dived deeper than lower quality ones, apparently catching a higher number of prey per dive and targeting different foraging locations; (2) females performed longer foraging trips and a higher number of dives compared to males; (3) there were no significant age-related differences in foraging behavior; and (4) breeding experience had a weak influence on foraging behavior. We suggest that high-quality individuals have higher physiological ability, enabling them to dive deeper and forage more effectively. Further inquiry should focus on determining the physiological differences among penguins of different quality.

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