Article
Environmental Sciences
Regina A. Guazzo, Ian N. Durbach, Tyler A. Helble, Gabriela C. Alongi, Cameron R. Martin, Stephen W. Martin, E. Elizabeth Henderson
Summary: The study found that the swimming behavior of fin whales is related to their vocalization rate and time, with whales swimming slower and turning more when the vocalization rate is higher. There are also differences in swimming behavior between day and night. The presence of fin whales in Hawaiian waters is influenced by factors such as time of day and sea state.
FRONTIERS IN MARINE SCIENCE
(2021)
Article
Multidisciplinary Sciences
Vaclav M. Kuna, John L. Nabelek
Summary: Fin whale calls are utilized to study the seismic properties of oceanic sediment, basaltic basement, and the lower crust beneath and around ocean bottom seismic stations. The recordings from ocean-bottom seismometers not only capture waterborne signals but also signals reflected and refracted from crustal interfaces. This study highlights the potential of using fin whale calls as a complementary method to traditional air-gun surveys in seismic research.
Article
Mechanics
Siddharth Gupta, Namshad Thekkethil, Amit Agrawal, Kerry Hourigan, Mark C. Thompson, Atul Sharma
Summary: This study investigates the energy efficiency of self-propelled hydrofoils for different modes and kinematics of swimming among various body-caudal fin fish. It is found that intermittent burst-and-coast (B&C) swimming can save energy, albeit with increased travel time. Additionally, the research shows that B&C swimming is effective for carangiform and thunniform tail-like kinematics but not for anguilliform body-like kinematics of the hydrofoil.
Article
Ecology
M. Roman Ruiz, C. Rossi, J. A. Esteban
Summary: This paper presents the application of Deep Neural Networks to detect Fin Whales pulses from long acoustic recordings. Acoustic signals are converted to images using Fourier transform, making the pulses specific shapes. The detection of pulses and their seasonal distribution have important ecological value, but the variations in shape and background noise make it difficult. Automated instruments are crucial for processing the large amount of data in a fast and effective way.
ECOLOGICAL INFORMATICS
(2023)
Article
Engineering, Multidisciplinary
Jun-Duo Zhang, Hyung Jin Sung, Wei-Xi Huang
Summary: In this study, the hydrodynamic interaction between the large crescent dorsal fin and caudal fin in tuna was numerically explored. The presence of the dorsal fin substantially enhanced the thrust on the caudal fin, and a constructive interaction between the leading-edge vortex on the caudal fin and the vortices shed from the dorsal fin was identified. The flapping phase of the caudal fin and the Strouhal number had an influence on the dorsal fin-caudal fin interaction, while the Reynolds number did not have a substantial effect.
BIOINSPIRATION & BIOMIMETICS
(2022)
Article
Multidisciplinary Sciences
Sergio F. Nigenda-Morales, Meixi Lin, Paulina G. Nunez-Valencia, Christopher C. Kyriazis, Annabel C. Beichman, Jacqueline A. Robinson, Aaron P. Ragsdale, R. Jorge Urban, Frederick I. Archer, Lorena Viloria-Gomora, Maria Jose Perez-Alvarez, Elie Poulin, Kirk E. Lohmueller, Andres Moreno-Estrada, Robert K. Wayne
Summary: Industrial whaling in the 20th century led to the near extinction of several species, particularly the fin whales. However, a small resident population in the Gulf of California was not targeted by whaling. By analyzing the genomes of Eastern North Pacific and Gulf of California fin whale populations, researchers found that the two populations diverged around 16,000 years ago and the Eastern North Pacific population experienced a significant reduction during the whaling period. In contrast, the Gulf of California population remained small and isolated, relying on low levels of migration to maintain viability.
NATURE COMMUNICATIONS
(2023)
Article
Chemistry, Analytical
Farook Sattar
Summary: This paper proposes a promising method using wavelet scattering transform and deep learning to detect/classify whale calls, particularly focusing on blue whales and fin whales, in the increasingly noisy ocean with a small dataset. The proposed method demonstrates high efficiency in terms of classification accuracy (>97%), outperforming the state-of-the-art methods. Enhancing passive acoustic technology to monitor endangered whale calls becomes essential for efficiently tracking their population, migration patterns, and habitat, aiming to reduce preventable injuries and deaths and contribute to their recovery.
Article
Multidisciplinary Sciences
Megan Wood, Ana Sirovic
Summary: This study characterizes the fin whale song and temporal pattern variations in the Western Antarctic Peninsula. The research identifies three pattern variants of the song, with the singlet variant being the most prevalent. The study also finds changes in the intervals and frequency of overtones in the song over time. Further research is needed to understand the reasons for song changes and the feasibility of using song to identify whale populations.
Article
Engineering, Marine
Yanwen Liu, Hongzhou Jiang
Summary: This study investigates the relationship between fish swimming performance and their body and caudal fin locomotion, identifying patterns of curvature change between high-efficiency and high-speed swimming modes. The research also shows a positive correlation between tail-beat frequency and swimming speed, stride length, and Cost of Transport (COT) when the Reynolds number is in the range of 10(4)-10(6). Furthermore, a comparison among different types of BCF fish reveals insights into the optimal swimming performance of different species.
JOURNAL OF MARINE SCIENCE AND ENGINEERING
(2021)
Article
Multidisciplinary Sciences
Jesus Sanchez-Rodriguez, Christophe Raufaste, Mederic Argentina
Summary: In this article, scaling laws for undulatory swimmers are proposed, relating beat frequency to length considering muscle biology and fluid interaction. The results support the idea that frequency tuning is the primary means by which a swimmer selects its speed, and highlight the influence of size on frequency regulation.
NATURE COMMUNICATIONS
(2023)
Article
Mechanics
Chang Wei, Qiao Hu, Shijie Li, Tangjia Zhang, Xindong Shi
Summary: This study aims to further understand the hydrodynamic characteristics of three-dimensional undulating fin propulsion. A high-resolution numerical technique is used to simulate the fluid-fin system, and the scaling law of force is analyzed. The study also investigates the interaction mechanism between the undulating fin and fluid flow. The findings have significant implications for explaining biological phenomena and developing bionic engineering.
Article
Multidisciplinary Sciences
Sara Oliveira Santos, Nils Tack, Yunxing Su, Francisco Cuenca-Jimenez, Oscar Morales-Lopez, P. Antonio Gomez-Valdez, Monica M. Wilhelmus
Summary: Metachronal propulsion is a common method used by aquatic swarming organisms to achieve performance and maneuverability. This study presents the design and validation of Pleobot, a krill-inspired robotic swimming appendage, which is the first platform to comprehensively study metachronal propulsion. By combining a multi-link 3D printed mechanism with active and passive actuation, natural kinematics are generated. The study shows the link between the flow around the appendage and thrust, as well as the contribution of a leading-edge suction effect to lift. The Pleobot's repeatability and modularity allow for independent manipulation of specific motions and traits for testing hypotheses. The study has implications for various scientific disciplines and the development of bio-inspired platforms for studying oceans.
SCIENTIFIC REPORTS
(2023)
Article
Biology
Miriam Romagosa, Sergi Perez-Jorge, Irma Cascao, Helena Mourino, Patrick Lehodey, Andreia Pereira, Tiago A. Marques, Luis Matias, Monica A. Silva
Summary: The study examined the vocalizations of fin whales and found that the production of 20-Hz calls is influenced by season and year, supporting their reproductive function hypothesis, while the 40-Hz calls are associated with prey biomass, indicating a food-associated function. Understanding animal signals can aid in identifying functional habitats and predicting impacts of human activities on conservation.
PROCEEDINGS OF THE ROYAL SOCIETY B-BIOLOGICAL SCIENCES
(2021)
Article
Engineering, Chemical
Pan Xiong, Jianghong Deng, Xinyuan Chen
Summary: This paper proposes a flap configuration that can improve the hydrodynamic performance of hydrofoils by studying the flapping motion of fish tail fins, significantly improving the performance of hydrofoils at small angles of attack, increasing the critical stall angle, and providing valuable information for the design and optimization of hydrofoils.
Article
Engineering, Electrical & Electronic
Lifan Sun, Haofang Yu, Zhumu Fu, Zishu He, Jie Zou
Summary: The paper explores the modeling and tracking of maneuvering extended objects, proposing a general approach using random hypersurface, which accurately describes the object centroid and extension dynamics for different turn maneuvers. This approach facilitates the design of an effective tracking algorithm for maneuvering extended objects with random hypersurface.
IEEE SENSORS JOURNAL
(2021)
Article
Environmental Sciences
David E. Cade, Shirel R. Kahane-Rapport, Ben Wallis, Jeremy A. Goldbogen, Ari S. Friedlaender
Summary: Animals are attracted to resource hotspots, but determining what makes one resource more appealing than another is challenging. A study conducted in Antarctica found that Charlotte Bay had over 5 times more humpback whales than neighboring Wilhelmina Bay, despite the latter being known for large aggregations of whales and Antarctic krill. The study revealed that factors such as patch size and krill length were more likely to predict whale foraging efforts, rather than the overall biomass of prey. Additionally, humpback whales in Charlotte Bay spent a significantly longer time foraging compared to those in Wilhelmina Bay, utilizing both deep dives and surface feeding strategies.
FRONTIERS IN MARINE SCIENCE
(2022)
Article
Biology
Paolo S. Segre, William T. Gough, Edward A. Roualdes, David E. Cade, Max F. Czapanskiy, James Fahlbusch, Shirel R. Kahane-Rapport, William K. Oestreich, Lars Bejder, K. C. Bierlich, Julia A. Burrows, John Calambokidis, Ellen M. Chenoweth, Jacopo di Clemente, John W. Durban, Holly Fearnbach, Frank E. Fish, Ari S. Friedlaender, Peter Hegelund, David W. Johnston, Douglas P. Nowacek, Machiel G. Oudejans, Gwenith S. Penry, Jean Potvin, Malene Simon, Andrew Stanworth, Janice M. Straley, Andrew Szabo, Simone K. A. Videsen, Fleur Visser, Caroline R. Weir, David N. Wiley, Jeremy A. Goldbogen
Summary: This study quantified the maneuvering performance of seven species of free-swimming baleen whale using bio-logging data, aerial photogrammetry, and a high-throughput approach. The results showed that larger whales have lower absolute maneuvering performance compared to smaller species, but exhibit positive allometry of maneuvering performance relative to their body size. Larger whales compensate for their decreased agility by using turns that they can perform more effectively.
JOURNAL OF EXPERIMENTAL BIOLOGY
(2022)
Article
Biology
Max F. Czapanskiy, Paul J. Ponganis, James A. Fahlbusch, T. L. Schmitt, Jeremy A. Goldbogen
Summary: A computational method is developed to extract heart rate from high-resolution accelerometer data, providing a new approach to analyze previously untapped physiological datasets.
JOURNAL OF EXPERIMENTAL BIOLOGY
(2022)
Article
Ecology
Benjamin P. Burford, R. Russell Williams, Nicholas J. Demetras, Nicholas Carey, Jeremy Goldbogen, William F. Gilly, Jeffrey Harding, Mark W. Denny
Summary: This study examines collective behaviors in two ecologically similar species from unrelated clades, and finds both similarities and differences between them. The results suggest that information sharing is important for both taxa, but certain capabilities may stem from taxon-specific biology.
ECOLOGY AND EVOLUTION
(2022)
Article
Biology
James A. A. Fahlbusch, Max F. F. Czapanskiy, John Calambokidis, David E. E. Cade, Briana Abrahms, Elliott L. L. Hazen, Jeremy A. A. Goldbogen
Summary: This study investigates the habitat selection and foraging performance of blue whales in the California Current System using remote sensing and biologging data. The findings reveal that blue whales disproportionately forage within dynamic aggregative submesoscale features, and higher aggregative features are associated with increased feeding success.
PROCEEDINGS OF THE ROYAL SOCIETY B-BIOLOGICAL SCIENCES
(2022)
Article
Multidisciplinary Sciences
Ross C. Nichols, David E. Cade, Shirel Kahane-Rapport, Jeremy Goldbogen, Alison Stimpert, Douglas Nowacek, Andrew J. Read, David W. Johnston, Ari Friedlaender
Summary: This study used animal movement modelling and biologging tags to investigate the seasonal foraging behavior of Antarctic humpback whales. The results showed that humpback whales have high feeding rates at the beginning of the feeding season, but the feeding rates decrease and foraging primarily occurs at night as the season progresses.
ROYAL SOCIETY OPEN SCIENCE
(2022)
Article
Ecology
John P. Ryan, Kelly J. Benoit-Bird, William K. Oestreich, Paul Leary, Kevin B. Smith, Chad M. Waluk, David E. Cade, James A. Fahlbusch, Brandon L. Southall, John E. Joseph, Tetyana Margolina, John Calambokidis, Andrew DeVogelaere, Jeremy A. Goldbogen
Summary: The trophic transfer of energy in marine food webs is influenced by prey aggregation and exploitation by predators. This study examines the hypothesis that predators of forage species track upwelling circulation in which prey aggregation occurs. Through observations of upwelling dynamics, forage species' aggregation, and blue whale movement, the study finds that blue whales track upwelling plume circulation when wind-driven upwelling intensifies and forage species aggregate. These findings highlight the resource tracking strategy employed by blue whales and have implications for the ecology and conservation of predators dependent on forage species responsive to episodic environmental dynamics.
Article
Environmental Sciences
K. C. Bierlich, Joshua Hewitt, Robert S. Schick, Logan Pallin, Julian Dale, Ari S. Friedlaender, Fredrik Christiansen, Kate R. Sprogis, Allison H. Dawn, Clara N. Bird, Gregory D. Larsen, Ross Nichols, Michelle R. Shero, Jeremy Goldbogen, Andrew J. Read, David W. Johnston
Summary: Most baleen whales are capital breeders that use stored energy for migration and reproduction. This study used drone-based photogrammetry to examine how the body condition of humpback whales changed over the foraging season, showing differences in body condition among different reproductive classes.
FRONTIERS IN MARINE SCIENCE
(2022)
Article
Anatomy & Morphology
Megan L. Vandenberg, Karly E. Cohen, Robert D. Rubin, Jeremy A. Goldbogen, Adam P. Summers, E. W. Misty Paig-Tran, Shirel R. Kahane-Rapport
Summary: Recent studies have shown that balaenids likely feed using a self-cleaning, cross-flow filtration mechanism, while how filtering is achieved in rorquals remains unclear. This study used a multimodal approach to investigate baleen anatomy in five species of rorqual whales and found that larger whales exhibited hypoallometry relative to body length. The study also proposed a model for estimating the effective pore size, which may reflect changes in resistance through the filter that affect fluid flow rather than prey size.
JOURNAL OF MORPHOLOGY
(2023)
Article
Marine & Freshwater Biology
Paolo S. S. Segre, Johnson Martin, Duncan J. J. Irschick, Jeremy A. A. Goldbogen
MARINE MAMMAL SCIENCE
(2023)
Article
Multidisciplinary Sciences
Simone K. A. Videsen, Malene Simon, Fredrik Christiansen, Ari Friedlaender, Jeremy Goldbogen, Hans Malte, Paolo Segre, Tobias Wang, Mark Johnson, Peter T. Madsen
Summary: Giant rorqual whales have a massive food turnover driven by a high-intake lunge feeding style, which is considered the largest biomechanical action. This feeding behavior, although high-drag, is energetically cheap, allowing rorquals to be flexible in exploiting different prey patches and resilient to environmental fluctuations and disturbance. As a result, the ecological role and food turnover of these marine giants are likely overestimated.
Article
Ecology
David E. Cade, Shirel R. Kahane-Rapport, William T. Gough, K. C. Bierlich, Jacob M. J. Linsky, John Calambokidis, David W. Johnston, Jeremy A. Goldbogen, Ari S. Friedlaender
Summary: Bulk filter feeding has allowed for gigantism in evolutionary history. The largest rorqual whales use lunge feeding, which becomes more efficient with body size. However, smaller rorquals exhibit lower daytime feeding rates compared to larger species, suggesting a minimum size for efficient filter feeding.
NATURE ECOLOGY & EVOLUTION
(2023)
Article
Environmental Sciences
Hannah Clayton, David E. E. Cade, Rianna Burnham, John Calambokidis, Jeremy Goldbogen
Summary: Understanding the function of baleen whale acoustic signals requires investigating their calling behaviors, including location, timing, and behavioral state. This study analyzed accelerometer and acoustic data collected from gray whales in Washington to identify their vocalizations. The study found that vocalizations were primarily made at slow speeds, shallow depths, and temporally proximate to surface behavior. The research also demonstrated the usefulness of accelerometry signals in identifying individual callers in animal-borne acoustic data.
FRONTIERS IN MARINE SCIENCE
(2023)
Article
Biology
William T. Gough, David E. Cade, Max F. Czapanskiy, Jean Potvin, Frank E. Fish, Shirel R. Kahane-Rapport, Matthew S. Savoca, K. C. Bierlich, David W. Johnston, Ari S. Friedlaender, Andy Szabo, Lars Bejder, Jeremy A. Goldbogen
Summary: This study investigates the impact of body size on lunge filter feeding behavior in whales. The results show that, regardless of body size, animals exhibit a skewed gradient between powered and unpowered engulfment. The study also found that larger whales capture more prey and energy at a lower cost.
INTEGRATIVE ORGANISMAL BIOLOGY
(2022)
Article
Biodiversity Conservation
Paolo S. Segre, Jacopo di Clemente, Shirel R. Kahane-Rapport, William T. Gough, Michael A. Meyer, Amanda T. Lombard, Jeremy A. Goldbogen, Gwenith S. Penry
Summary: Recent changes in the South African marine ecosystem and the introduction of an experimental octopus fishery have led to a high rate of fatal whale entanglements. By studying Bryde's whales' feeding behavior, researchers identified that their high-speed chases near the seafloor make them susceptible to entanglement. This finding helped implement changes to octopus fishing gear and reduce the number of entanglements significantly.
CONSERVATION SCIENCE AND PRACTICE
(2022)
