Results 71 to 80 of about 7,484 (165)

Fishing Activity Affected Odontocete Cetacean Distribution in a Marine Protected Area in the East China Sea

Integrative Zoology, EarlyView.
Spatiotemporal distribution of odontocete cetaceans within China's Jiushan Archipelago National Nature Reserve was investigated. Fishing vessels significantly reduced both cetacean acoustic detections and feeding activity, whereas gillnets selectively suppressed cetacean feeding behavior without affecting overall cetacean detection rates.
Yifan Liu, Zitong Zhou, Peng Ding, Yu Pan, Zhi Yang, Haochi Wang, Fangqiao Wang, Tianshi Wei, Pengxiang Duan, Tomonari Akamatsu, Zhitao Wang   +10 more
wiley   +1 more source

Bat echolocation signals based on the time-varying autoregressive method

Frontiers in Zoology
Bat echolocation is among the most efficient biological sonar known to human, and is highly valuable for biomimetic research. Most bats produce dynamically changing echolocation signals, which is the key to high task performance.
Xuan Zhong, Zhongbao Wang, Jianshu Wang, Kuiying Yin, Jinhong Luo   +4 more
doaj   +1 more source

Ranging in human sonar: effects of additional early reflections and exploratory head movements.

PLoS ONE, 2014
Many blind people rely on echoes from self-produced sounds to assess their environment. It has been shown that human subjects can use echolocation for directional localization and orientation in a room, but echo-acoustic distance perception--e.g.
Ludwig Wallmeier, Lutz Wiegrebe
doaj   +1 more source

Reproductive Biology, Mating System, and Extended Natal Association in the Echolocating Dalou Mountains Tree Mouse (Typhlomys daloushanensis): Insights Into Sensory Adaptation and Life‐History Strategy

Integrative Zoology, EarlyView.
Typhlomys daloushanensis, a poorly known and unique echolocating rodent. Using a captive breeding colony, we quantify key reproductive parameters, including gestation length, litter size, interbirth interval, and development to maturity, and evaluate these in relation to mating system structure.
Juncheng Li, Tianyu Ren, Tian Tian, Chris Newman, Rui Yuan, Nan Wu, Christina D. Buesching, Youbing Zhou, Jinwei Wu   +8 more
wiley   +1 more source

Rainfall and Temperature Explain Colony Variation in Echolocation Calls of the Intermediate Horseshoe Bats (Rhinolophus affinis)

Ecology and Evolution
Geographic variation in acoustic signals of animals is shaped by both environmental conditions and morphology related to vocal production. However, the drivers of call variation among colonies at a landscape scale remain largely uncertain.
Dongge Guo, Lixian Wang, Chong Zhang, Siyuan Dong, Fang Wang, Bo Luo, Sen Liu   +6 more
doaj   +1 more source

SonoNERFs: Neural Radiance Fields Applied to Biological Echolocation Systems Allow 3D Scene Reconstruction through Perceptual Prediction

Biomimetics
In this paper, we introduce SonoNERFs, a novel approach that adapts Neural Radiance Fields (NeRFs) to model and understand the echolocation process in bats, focusing on the challenges posed by acoustic data interpretation without phase information ...
Wouter Jansen, Jan Steckel
doaj   +1 more source

Successful 22‐Hour Rescue and Release of a 19.5 M Beached Sperm Whale

Integrative Zoology, EarlyView.
19.5‐m‐long sperm whale was stranded on a mudflat, China on 19 April 2022. A dramatic 22‐hour rescue mission ultimately saved the whale, enabling it to swim back to sea. ABSTRACT Whales, dolphins, and porpoises are important flagship species and play a vital role in maintaining healthy aquatic ecosystems. However, stranded cetaceans are often doomed if
Zitong Zhou, Yu Pan, Zhi Yang, Fangqiao Wang, Tianshi Wei, Zhitao Wang   +5 more
wiley   +1 more source

Insights into foraging behavior from multi-day sound recording tags on goose-beaked whales (Ziphius cavirostris) in the Southern California Bight

Frontiers in Marine Science
Goose-beaked whales (Ziphius cavirostris) are deep-diving cetaceans known for their elusive nature and specialized foraging behavior. In 2019 and 2020, six telemetry tags were deployed on these whales in Southern California, resulting in 395 h of ...
Shannon N. Coates, David A. Sweeney, Erin A. Falcone, Stephanie L. Watwood, Brenda K. Rone, Stacy L. DeRuiter, Jay Barlow, Karin A. Dolan, Ronald P. Morrissey, Nancy A. DiMarzio, Susan M. Jarvis, Russel D. Andrews, Gregory S. Schorr   +12 more
doaj   +1 more source

Spike Train Similarity Space (SSIMS) Method Detects Effects of Obstacle Proximity and Experience on Temporal Patterning of Bat Biosonar

Frontiers in Behavioral Neuroscience, 2018
Bats emit biosonar pulses in complex temporal patterns that change to accommodate dynamic surroundings. Efforts to quantify these patterns have included analyses of inter-pulse intervals, sonar sound groups, and changes in individual signal parameters ...
Alyssa W. Accomando, Alyssa W. Accomando, Carlos E. Vargas-Irwin, James A. Simmons   +3 more
doaj   +1 more source

WAH‐i: Optimising microphone array geometry for customised localisation accuracy

Methods in Ecology and Evolution, EarlyView.
Abstract Accurate spatial localisation of free‐flying echolocating bats is foundational for resolving fine‐scale flight and echolocation behaviour, prey interception and spatial decision‐making in natural environments. Acoustic localisation using microphone arrays is widely employed for this purpose, yet array geometries in field studies are typically ...
Ravi Umadi
wiley   +1 more source