Results 41 to 50 of about 1,345 (186)

The Sonar Model for Humpback Whale Song Revised

Frontiers in Psychology, 2018
Why do humpback whales sing? This paper considers the hypothesis that humpback whales may use song for long range sonar. Given the vocal and social behavior of humpback whales, in several cases it is not apparent how they monitor the movements of distant
Eduardo Mercado III, Eduardo Mercado III
doaj   +1 more source

Adaptive Echolocation and Flight Behaviors in Bats Can Inspire Technology Innovations for Sonar Tracking and Interception

Sensors, 2020
Target tracking and interception in a dynamic world proves to be a fundamental challenge faced by both animals and artificial systems. To track moving objects under natural conditions, agents must employ strategies to mitigate interference and conditions
Clarice Anna Diebold, Angeles Salles, Cynthia F. Moss   +2 more
doaj   +1 more source

Effects of Recreational Boats on Harbour Porpoise Swimming Speed and Surfacing Interval Investigated by Two Synchronised UAVs. [PDF]

Ecol Evol
This study examines the impact of speed and proximity of recreational boats on the swimming speed and surfacing interval of one of the most common coastal cetacean species, the harbour porpoise (Phocoena phocoena), using data collected by unmanned aerial vehicles (UAVs) in a key habitat for the vulnerable Belt Sea population.
Till J, Palmqvist V, Wilk EN, Carlsson P, Stedt J.   +4 more
europepmc   +2 more sources

Numerical study of dynamic noseleaf models in greater horseshoe bats, Rhinolophus ferrumequinum [PDF]

MATEC Web of Conferences, 2019
Echolocating greater horseshoe bats (Rhinolophus ferrumequinum) emit biosonar pulses through nostril. The nostrilis surrounded by sophisticated and delicate appendages, i.e. noseleaf.
Gao Li, Lu Hongwang, Feng Jianxiong, Zhang Zhiwei, Ma Xin, He Weikai   +5 more
doaj   +1 more source

Convergent Evolution of Wingbeat-Powered Anti-Bat Ultrasound in the Microlepidoptera

Frontiers in Ecology and Evolution, 2021
Bats and moths provide a textbook example of predator-prey evolutionary arms races, demonstrating adaptations, and counter adaptations on both sides. The evolutionary responses of moths to the biosonar-led hunting strategies of insectivorous bats include
Liam Joseph O’Reilly, Liam Joseph O’Reilly, Brogan John Harris, David John Lawrence Agassiz, Marc Wilhelm Holderied   +4 more
doaj   +1 more source

The diel rhythms of biosonar behavior in the Yangtze finless porpoise (Neophocaena asiaeorientalis asiaeorientalis) in the port of the Yangtze River: The correlation between prey availability and boat traffic. [PDF]

PLoS ONE, 2014
Information on the habitat use of the critically endangered Yangtze finless porpoise (Neophocaena asiaeorientalis asiaeorientalis) is critical for its conservation.
Zhitao Wang, Tomonari Akamatsu, Kexiong Wang, Ding Wang   +3 more
doaj   +1 more source

An Improved Preprocessing For Biosonar Target Classification

, 2004
{"references": ["R. F. Lyon, ''A computational model of filtering, detection, and compression in cochlea,'' in Proc. IEEE Intl. Conf. On Acoust.Speech,Signal Processing, pp. 1282-1285, Paris, France, May, 1982.", "R.D. Patterson, and J. Holdsworth, ''A functional model of neural activity patterns and auditory images,'' William A. Ainsworth (ed.), vol.3,
Temel, T., Hallam, John
openaire   +4 more sources

Variation in the production rate of biosonar signals in freshwater porpoises

, 2013
The biosonar (click train) production rate of ten Yangtze finless porpoises and their behavior were examined using animal-borne data loggers. The sound production rate varied from 0 to 290 click trains per 10-min time interval.
Li, Songhai, Yoda, Ken, Kimura, S (reprint author), Nagoya Univ, Grad Sch Environm Studies, Chikusa Ku, Furo Cho, Nagoya, Aichi 4648601, Japan., Wang, Ding, Kimura, Satoko, Akamatsu, Tomonari, Wang, Kexiong   +6 more
core   +1 more source

Multi‐Platform Deployments of Low‐Cost Devices for Cetacean Passive Acoustic Monitoring

Remote Sensing in Ecology and Conservation, EarlyView.
Recent advances in affordable, user‐friendly devices offer new opportunities to overcome cost constraints of underwater passive acoustic monitoring (PAM) and expand acoustic data collection. In this study, we deployed low‐cost acoustic recorders and underwater cameras across a range of platforms in the Western Mediterranean, including fishing gear ...
Greta Jankauskaite, François Poisson, Irati Abascal, Javier Menéndez‐Blázquez, Clara Cánovas Pérez, Sofia Conti, Ricardo Sagarminaga, Juan Antonio Raga, David March   +8 more
wiley   +1 more source

Lancet dynamics in greater horseshoe bats, Rhinolophus ferrumequinum. [PDF]

PLoS ONE, 2015
Echolocating greater horseshoe bats (Rhinolophus ferrumequinum) emit their biosonar pulses nasally, through nostrils surrounded by fleshy appendages ('noseleaves') that diffract the outgoing ultrasonic waves.
Weikai He, Scott C Pedersen, Anupam K Gupta, James A Simmons, Rolf Müller   +4 more
doaj   +1 more source