Results 121 to 130 of about 63,362 (250)

Correlates of variability in killer whale stereotyped call repertoires. [PDF]

, 2005
Killer whales vocalisations include repertoires of stereotyped call types (Ford 1984). There is strong evidence that these vocalisations are learnt (Hoelzel and Osborne 1986; Bain 1989; Deecke et al. 2000; Yurk et al. 2002).
Foote, Andrew David
core  

Modeling Skin Mark Temporal Variations to Estimate the Sex of Delphinids with Low Sexual Dimorphism: Implications for Management and Conservation

Integrative Zoology, EarlyView.
This work aimed to apply the principles of skin mark analysis to a cetacean species to build a sex‐discrimination model exclusively based on photographic material. Relevant differences between sexes emerged in markings, with males presenting more social, aggression‐related, and fishing‐related marks overall, and a stronger tendency of mark accumulation
Alice Turchi, Giulia Pedrazzi, Alex Mattiussi, Maria S. Labriola, Daniele Petrone, Sofia Rinalduzzi, Giancarlo Giacomini, Daniela Silvia Pace   +7 more
wiley   +1 more source

The current state and future prospects of whale-watching management : with special emphasis on whale-watching in British Columbia, Canada [PDF]

, 2008
Commercial whale-watching has become an important aspect of global marine tourism. Rapid expansion during the 1990s has created a yearly US$1 billion industry, in which approximately 10 million people go whale-watching in nearly 90 countries.
Malcolm, Christopher Duncan.
core  

Efficient Masked Autoencoder for Birdsong Representation with Applications on Wild Bird Species Classification

Integrative Zoology, EarlyView.
Research on mosquito feeding preferences and the malaria parasites they transmit is essential for understanding the interactions between hosts, vectors, and parasites. In this study, vertebrate hosts were identified in 72 mosquitoes. Most blood meals (58.7%) came from birds, representing 25 species, while 40.0% came from mammals (13 species), and 1.3 ...
Qin Zhang, Shipeng Hu, Hengrui Wang, Jizheng Yi, Guoxiong Zhou, Xiangyu Shen, Weixiong Peng, Zhishu Xiao, Aibin Chen   +8 more
wiley   +1 more source

Wrightsville Beach - Whale - April 1928.

, 1928
View of the whale (pictured center), which washed up on beach. A large sperm whale washed up on the beach (pictured center). The whale measured fifty-four feet in length and thirty-three feet in girth.

core   +1 more source

Blubber Thickening Driven by UCP1 Inactivation: Insights from a Cetacean‐Like Transgenic Mouse Model

Integrative Zoology, EarlyView.
UCP1 inactivation of cetaceans in mice drives BAT whitening and iWAT hyperplasia, promoting fat accumulation for aquatic adaptation. Abstract Cetaceans possess thick blubber, a specialized adipose tissue essential for thermal insulation, a streamlined body form, energy storage, and buoyancy. However, the mechanisms that underpin this adaptation are not
Qian Zhang, Yuehua Wang, Hang Zhang, Guiping Xu, Shixia Xu, Guang Yang   +5 more
wiley   +1 more source

The variability of muscle–blubber interface temperature with activity level in a captive Risso’s dolphin (Grampus griseus)

Animal Biotelemetry
Background To reduce heat loss underwater, marine mammals cover their bodies with insulation. Cetaceans in particular rely solely on blubber for insulation which has low conductivity.
Kino Sakai, Daisuke Fukui, Hiroshi Shirouzu, Yurie Watanabe, Daiki Inamori, Noriko Funasaka, Kagari Aoki, Kentaro Q. Sakamoto   +7 more
doaj   +1 more source

Decoding Dual Regulatory Layers: Integrating Differential Expression and Alternative Splicing Dynamics in the Evolution of Laryngeal Echolocation Across Chiropteran Lineages

Integrative Zoology, EarlyView.
We integrated short‐read and long‐read RNA‐seq data from cochlear tissues of echolocating and non‐echolocating bats to disentangle transcriptional and post‐transcriptional regulation. Echolocating bats showed neural‐function enrichment among differentially expressed genes, while alternatively spliced genes were linked to epigenetic regulation. Overlaps
Jianyu Wu, Daoyuan Hu, Min Chen, Xiuguang Mao   +3 more
wiley   +1 more source

Sensory Biology of the Franciscana (Pontoporia blainvillei, Pontoporiidae, Cetartiodactyla): Ontogenetic Modifications of Vibrissae and Vibrissal Crypts

Integrative Zoology, EarlyView.
The transition of cetaceans from a terrestrial to an aquatic environment involved a crucial sensory adaptation to environments with limited visibility. Vibrissae, important mechanoreceptors, undergo an ontogenetic transformation in odontocetes. This research describes the histomorphology of vibrissae and crypts at different developmental stages ...
Cecilia Mariana Krmpotic, Cleopatra Mara Loza, Alejo Carlos Scarano, Pedro Fernando Andrés‐Laube, Francisco Acuña, Juan Pablo Loureiro, Carolina Natalia Zanuzzi, Nicolás Nahuel Castro, María Teresa Pombo, Lorenzo von Fersen, Claudio Gustavo Barbeito   +10 more
wiley   +1 more source

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