Results 21 to 30 of about 18,864 (270)

Repellence Effect of the New Sound for Underwater Speaker of Hydrofoil [PDF]

TransNav, 2015
In order to prevent hydrofoil colliding with cetaceans, the underwater speaker (UWS) has been installed to repel cetaceans. Yamada et al. (2012) analyzed and devised the UWS sound as it fits the cetaceans' acoustic properties to prevent the collision ...
Tatsunori Nakashima, Nozomi Kobayashi, Hiroko Yamada, T. Katsumata, R. Yoshida, Hidehiro Kato, H. Okabe, I. Kawazu, Y. Yanase, M. Omine, Minoru Terada, Hiroko Sugioka, Masanori Kyo   +12 more
doaj   +1 more source

Anthropogenic Sound Exposure-Induced Stress in Captive Dolphins and Implications for Cetacean Health

Frontiers in Marine Science, 2021
Many cetaceans are exposed to increasing pressure caused by anthropogenic activities in their marine environment. Anthropogenic sound has been recognized as a possible stressor for cetaceans that may have impacts on health.
Wei-Cheng Yang, Chi-Fang Chen, Yee-Chien Chuah, Chun-Ru Zhuang, I-Hua Chen, T. Aran Mooney, Jeff Stott, Myra Blanchard, I-Fan Jen, Lien-Siang Chou   +9 more
doaj   +1 more source

Development of the Effective Underwater Speaker Sound Modulated by Audible Sound Frequency Range of Large Cetaceans for Avoidance with Ship Collision [PDF]

TransNav, 2015
The underwater speaker (UWS) has been installed on high speed vessels; hydrofoils (HF) with low-noise during their cruises, to avoid sudden collisions with large cetaceans, while its performance has remained uncertain because of the problem in quality of
Hiroko Yamada, Nozomi Kobayashi, Tatsunori Nakashima, Hidehiro Kato   +3 more
doaj   +1 more source

Factors associated with the differential distribution of cetaceans linked with deep habitats in the Western Mediterranean Sea

Scientific Reports, 2022
Deep-habitat cetaceans are generally difficult to study, leading to a limited knowledge of their population. This paper assesses the differential distribution patterns of three deep-habitat cetaceans (Sperm whale—Physeter macrocephalus, Risso’s dolphin ...
Estefanía Torreblanca, José-Carlos Báez, Raimundo Real, David Macías, Salvador García-Barcelona, Francisco Ferri-Yañez, Juan-Antonio Camiñas   +6 more
doaj   +1 more source

Urgent assessment needed to evaluate potential impacts on cetaceans from deep seabed mining

Frontiers in Marine Science, 2023
Deep seabed mining operations, if permitted, could present significant risks to ocean ecosystems. Disturbance on any scale is likely to be long lasting and irreversible.
Kirsten F. Thompson, Kirsten F. Thompson, Kathryn A. Miller, Jake Wacker, Solène Derville, Christopher Laing, David Santillo, Paul Johnston   +7 more
doaj   +1 more source

Occurrence, distribution and abundance of cetaceans in Onslow Bay, North Carolina, USA [PDF]

, 2015
In this paper the occurrence, distribution and abundance of cetaceans in offshore waters of Onslow Bay, North Carolina, USA is described. Between June 2007 and June 2010 monthly aerial and shipboard line-transect surveys were conducted along ten 74km ...
Cummings, E.W., McAlarney, R.J., Hazen, L., Urian, Kim, McLellan, W.A., Laura, A-M., Dunn, J., Read, Andrew, J., Borchers, David Louis, Pabst, D.A., Bell, J., Nilsson, P., Waples, D.M., Barco, S., Schneider, S.Z., Paxton, Charles G. M., Burt, M Louise, Fougeres, J., Williams-Hodge, L.E.   +18 more
core   +2 more sources

Cetaceans and cetacean research in India

J. Cetacean Res. Manage., 2023
The diversity of cetacean species in Indian waters is high, with 25 species recorded so far. Records of cetaceans from India during the last 200 years have provided insights into their spatiotemporal distribution, behaviour, feeding, reproduction, fishery interaction and pollution.
openaire   +1 more source

Sightings of Cetaceans in the waters of Yuzhny Sea Port (Hryhorivsky Estuary, Black Sea) in 2015–2016 [PDF]

Праці Теріологічної школи, 2016
The use of transformed coastal ecosystems by the Black Sea cetaceans is an important, but little studied issue. In 2015–2016, coastal visual observations of cetaceans were conducted in the waters of Yuzhny Sea Port.
Оksana Savenko, Julia Ivanchikova, Bohdan Hulak, Tatyana Derkacheva   +3 more
doaj   +1 more source

First Unmanned Aerial Vehicle Observation of Epimeletic Behavior in Indo-Pacific Humpback Dolphins

Animals, 2022
Epimeletic behavior has been reported in various species of cetaceans and sometimes in wild populations during vessel-based surveys. Epimeletic behavior in cetaceans involves complex social interactions which have been described using observational and ...
Tabris Yik-To Chung, Heysen Hei-Nam Ho, Henry Chun-Lok Tsui, Brian Chin-Wing Kot   +3 more
doaj   +1 more source

Comparative genomics reveals evolutionary loss of epiplakin in cetaceans

Scientific Reports, 2022
The adaptation of vertebrates to different environments was associated with changes in the molecular composition and regulation of epithelia. Whales and dolphins, together forming the clade cetaceans, have lost multiple epithelial keratins during or ...
Peter Fuchs, Corinne Drexler, Sonia Ratajczyk, Leopold Eckhart   +3 more
doaj   +1 more source