Results 121 to 130 of about 21,365 (266)

Skeletons of swiftly swimming sharks: Three‐dimensional analysis of lamniform vertebral morphology and mineral architecture

Journal of Anatomy, EarlyView.
We examined morphology, 3D arrangement, and mineral amount in cartilaginous vertebrae from four lamniform shark families (Alopiidae, Carchariidae, Cetorhinidae, and Lamnidae). We identified family‐specific mineralization trends, and regional patterning of structures along the column.
Jamie L. Knaub, Madisan Biordi, Emma Pawlik, Michelle Passerotti, Lisa J. Natanson, Tricia Meredith, Marianne Porter   +6 more
wiley   +1 more source

Gas exchange and pulmonary stress variations during SCUBA and breath‐hold diving in open seawater

The Journal of Physiology, EarlyView.
Abstract figure legend Healthy, trained divers were studied before, during and after diving in open seawater with different techniques. SCUBA divers (diving to 15 or 40 m with air; cycling at depth) and breath‐hold divers (BHDs; sled‐assisted dives to 15, 25 or 40 m) underwent underwater and surface arterial blood gas (ABG) sampling.
Matteo Paganini, Tommaso Antonio Giacon, Simona Mrakic‐Sposta, Luca Martani, Danilo Cialoni, Lorenzo Zucchi, Vincenzo Maffei, Rosario Cifali, Mariano Marmo, Enrico M Camporesi, Richard E Moon, Gerardo Bosco   +11 more
wiley   +1 more source

Evolution of cetacean-specific conserved non-coding elements suggests their role in the limb changes during secondary aquatic adaptation

BMC Biology
Background Limb morphology is particularly important for animals to inhabit different environments. Limb modifications (e.g., flipper-like forelimbs and hindlimb regression) are among the most critical secondary aquatic adaptation mechanisms enabling ...
Zhenhua Zhang, Zhenpeng Yu, Yujie Chong, Yao Liu, Jia Liu, Wenhua Ren, Shixia Xu, Guang Yang   +7 more
doaj   +1 more source

Photobacterium damselae subsp. damselae in Stranded Cetaceans: A 6-Year Monitoring of the Ligurian Sea in Italy

Animals
Photobacterium damselae subsp. damselae (Pdd) is an increasingly common bacterium in post-mortem diagnostics of beached marine mammals, but little is known about its precise etiological responsibility.
Roberta Battistini, Chiara Masotti, Federica Giorda, Carla Grattarola, Simone Peletto, Camilla Testori, Simona Zoppi, Enrica Berio, Maria Ines Crescio, Nicola Pussini, Laura Serracca, Cristina Casalone   +11 more
doaj   +1 more source

A sense of scale: Foraging cetaceans' use of scale‐dependent multimodal sensory systems

, 2017
Research on cetacean foraging ecology is central to our understanding of their spatial and behavioral ecology. Yet, functional mechanisms by which cetaceans detect prey across different scales remain unclear.
L. Torres
semanticscholar   +1 more source

The heart responds to pressure via the lung: Dive depth alters cardiac control in bottlenose dolphins

The Journal of Physiology, EarlyView.
Abstract figure legend Dive depth independently modulated cardiac regulation in bottlenose dolphins during controlled voluntary dives. Dolphins performed dives to 0.5, 5 and 10 m with standardized dive durations, allowing the effects of depth on cardiovascular responses to be evaluated.
F. Cunha Oliveira, N. Pelufo Martínez, K. Aoki, J. Altimiras, L. Moñino, A. G. Torrente, A. Fahlman   +6 more
wiley   +1 more source

Structural Variation in Whistle Patterns of Two Coastal Dolphin Species Co‐Occurring in the Southern Israeli Mediterranean Sea

Marine Mammal Science, Volume 42, Issue 4, October 2026.
ABSTRACT Two coastal dolphin species, the common bottlenose dolphin (Tursiops truncatus—Tt) and the short‐beaked common dolphin (Delphinus delphis—Dd), co‐occur along the southern Israeli Mediterranean coast, where the critically endangered Dd population faces ecological pressures, potentially including competitive exclusion by that of the Tt ...
Y. E. Zuriel, I. Aharoni, D. Atch, O. Galili, D. Tchernov, A. Scheinin, D. Kerem   +6 more
wiley   +1 more source

Kogia Records in Brazilian Equatorial and Southwestern Atlantic Oceans

Marine Mammal Science, Volume 42, Issue 4, October 2026.
ABSTRACT The pygmy (Kogia breviceps) and dwarf (Kogia sima) sperm whales are cryptic cetaceans characterized by inconspicuous surfacing behavior, small group sizes, and deep‐diving habits, making visual detection particularly challenging. Here, we present the first broad‐scale passive acoustic monitoring (PAM) assessment of Kogia spp.
Joao Pedro M. Mura, Raphael B. Machado, Yasmin P. Viana, Natalia Rodrigues‐Soares, Giovanne A. Ferreira, Larissa Kelmer L. Kascher, Barbara S. Silva, Lucia O. Alencar, Gabrieli M. Rodrigues, Franciele R. de Castro, Daniela F. Godoy, Jose L. Pizzorno, Artur Andriolo   +12 more
wiley   +1 more source

Group‐Specific Variation in Heterodyne Frequencies of Biphonic Calls in Resident (R‐Type) Killer Whales Orcinus orca ater

Marine Mammal Science, Volume 42, Issue 4, October 2026.
ABSTRACT Biphonation—the simultaneous production of two independent fundamental frequencies within a single vocalization—is a prominent feature of killer whale calls, yet the factors influencing the presence and intensity of heterodyne frequencies, which arise from interactions between these fundamentals, remain poorly understood. We analyzed long‐term
Vera I. Fedorova, Ilya A. Volodin, Tatiana V. Ivkovich, Elena V. Volodina, Erich Hoyt, Olga A. Filatova   +5 more
wiley   +1 more source

Comparing Drone and Vessel‐Based Imaging to Quantify Epibiont Coverage on Humpback Whales

Marine Mammal Science, Volume 42, Issue 4, October 2026.
ABSTRACT Cetacean epibionts offer noninvasive insights into host health, physiology, and spatial ecology, yet quantitative assessments in wild populations remain scarce. Although vessel‐based observations may be limited by field of view and analyst input, unoccupied aerial vehicles (UAVs; drones) are increasingly used to monitor cetacean health indices,
Isabel A. R. Taylor, Ticiana Fettermann, Barry McGovern, David S. Schoeman, Adrian B. McCallum, Stephanie H. Stack   +5 more
wiley   +1 more source