Article
Marine & Freshwater Biology
Ian K. Bartol, Alissa M. Ganley, Amanda N. Tumminelli, Soraya M. Bartol, Joseph T. Thompson, Paul S. Krueger
Summary: Turning plays a crucial role in ecological success in the oceans, allowing squids to capture prey, escape predators, and navigate complex environments. However, there is limited quantitative knowledge about their turning dynamics. This study examined the turning capacity of neritic squids, focusing on the role of propulsors and orientation, and investigated if jet flow can predict their performance. The results showed that Lolliguncula brevis was the most proficient at turning, with the highest angular velocity and the lowest turning radius. The pulsed jet was found to contribute significantly to turns in all squids, and the direction of the turns and jet velocity/impulse were key factors affecting turning performance.
Article
Ecology
Alissa M. Ganley, Paul S. Krueger, Ian K. Bartol
Summary: This study examined the maneuverability of two squid species, Doryteuthis pealeii and Illex illecebrosus, using kinematic tracking approaches. The results showed that Illex illecebrosus completed faster but broader turns, while Doryteuthis pealeii relied more on fin flap frequencies and amplitudes for turning. Both species were able to complete tighter turns when oriented arms-first versus tail-first, and Illex illecebrosus curled its arms more in the arms-first mode, likely increasing angular velocity.
JOURNAL OF EXPERIMENTAL MARINE BIOLOGY AND ECOLOGY
(2023)
Article
Biology
Abigail M. Downs, Allison Kolpas, Barbara A. Block, Frank E. Fish
Summary: Tuna's rigid body should limit their turning performance, but they overcome this limitation by increasing the flexibility of their tail and utilizing specific turning behaviors.
JOURNAL OF EXPERIMENTAL BIOLOGY
(2023)
Review
Environmental Sciences
Rahul Jaitly, Eva Ehrnsten, Johanna Hedlund, Michael Cant, Philipp Lehmann, Alexander Hayward
Summary: Predation is a major driver of animal adaptation, and cephalopods are known for their behavioral flexibility and diverse anti-predator strategies. They have reduced reliance on physical defenses and evolved highly developed senses, cryptic skin patterns, startle responses, and elaborate means of escape. Despite the relatively well described anti-predator repertoire of cephalopods, their evolution and selective pressures have received less attention.
FRONTIERS IN MARINE SCIENCE
(2022)
Article
Ecology
Carl S. Cloyed, John M. Grady, Van M. Savage, Josef C. Uyeda, Anthony I. Dell
Summary: Organismal locomotion plays a critical role in ecological interactions and community dynamics, with larger organisms being faster but less maneuverable than smaller ones. Routine and maximum speeds scale with body size to 0.20 and 0.17 powers respectively, plateauing at higher body masses.
Article
Veterinary Sciences
Katja Sohnel, Emanuel Andrada, Marc H. E. de Lussanet, Heiko Wagner, Martin S. Fischer, Christian Rode
Summary: The study focused on the maneuverability of quadrupeds during complex actions like simultaneous jumping and turning. Results showed that during landing, the forelimbs of the dogs generated higher lateral forces compared to the hindlimbs. Advanced dogs exhibited stronger lateral impulse and greater inner-outer limb asymmetry, leading to significantly better turning ability. The study suggests that constrained motions leave little room for individual technique and the results can be applied to quadrupedal turn jumps in other animals.
RESEARCH IN VETERINARY SCIENCE
(2021)
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
Fisheries
Justin J. Suca, Jarrod A. Santora, John C. Field, K. Alexandra Curtis, Barbara A. Muhling, Megan A. Cimino, Elliott L. Hazen, Steven J. Bograd
Summary: This study generated a species distribution model for market squid and examined the mechanisms behind the variability in their regional abundance and occurrence. The results indicated that juvenile market squid abundance is controlled by local recruitment, sea surface temperature, and upwelling dynamics. Recent changes in these environmental factors appear to contribute to the northward range expansion of market squid.
ICES JOURNAL OF MARINE SCIENCE
(2022)
Article
Physics, Multidisciplinary
Segun Goh, Roland G. Winkler, Gerhard Gompper
Summary: This study reveals that pursuit performance depends on the interplay between self-propulsion, active reorientation, limited maneuverability, and random noise. Noise has two opposing effects: disturbing regular orbits around the target and slowing down pursuit. The mean pursuer-target distance and mean first-passage time exhibit a universal scaling behavior, but are modified by factors such as thermal or active noise and the velocity ratio between target and pursuer.
NEW JOURNAL OF PHYSICS
(2022)
Article
Mathematics, Applied
Przemyslaw Gawronski, Alfio Borzi, Krzysztof Kulakowski
Summary: This study investigates the system of two resources and one consumer within the Rosenzweig-MacArthur model, with a Holling type II functional response. The results show that oscillations of C and mutually synchronized R-i are destabilized when consumption rates are modified, leading the system towards fixed points or limit cycles with smaller amplitudes. The consumer is unable to change the preferred resource due to the symmetry between the resources.
Article
Computer Science, Information Systems
Zhonghua Yang, Weijie Gong, Hong Chen, Sen Wang, Guojing Zhang
Summary: This paper studies the maneuverability of robotic dolphins and establishes a dynamic model to predict their turning performance. Experimental results show that the model can successfully predict the turning maneuverability, and the proposed turning methods have better performance compared to some robotic fish.
Article
Biology
Olivia H. Hawkins, Victor M. Ortega-Jimenez, Christopher P. Sanford
Summary: Rapid turning and swimming play important roles in ecological behaviors of fishes. This study investigated the turning performance and hydrodynamics of the black ghost knifefish, revealing the role of its atypical elongated ribbon fin in controlled rapid turning.
JOURNAL OF EXPERIMENTAL BIOLOGY
(2022)
Article
Zoology
H. E. Cohen, E. A. Kane
Summary: Performance, linked to morphology, is influenced by environmental contexts and trait variation within species. This study found no local adaptation differences in prey capture performance traits among Trinidadian guppy populations, with competition in low predation habitats not leading to performance divergence compared to high predation habitats. Therefore, female guppies may be kinematic generalists with selection on prey capture possibly acting on feeding behaviors instead of performance traits.
JOURNAL OF ZOOLOGY
(2021)
Article
Chemistry, Multidisciplinary
Jui-Hung Liu, Kathleen Ebora Padrigalan
Summary: This paper presents a scaled-down prototype design and kinematic modeling of a climbing robot for wind turbine maintenance. With a special winding mechanism and four mecanum wheels, the robot is capable of maneuvering in different movement states on the wind turbine tower. The results of this study provide a foundation for the design of new transformative climbing robots and the application of mecanum wheels in robot motion.
APPLIED SCIENCES-BASEL
(2022)
Article
Biology
Tao Wen, Eugene Koonin, Kang Hao Cheong
Summary: The study suggests that dormancy can be an effective adaptive strategy to outcompete actively prey, replicating the game-theoretic Parrondo's paradox where two losing strategies combine to achieve a winning outcome. Species with the ability to switch between active and dormant forms can dominate communities through competitive exclusion.