Results 41 to 50 of about 954 (183)

Kogia breviceps (pygmy sperm whale) - UMA-4877

open access: yes, 2022
Kogia breviceps (pygmy sperm whale) - UMA-4877 - female - 2.85 m - Pelvic location - UMass ...

core  

Assessing Seasonality and Density From Passive Acoustic Monitoring of Signals Presumed to be From Pygmy and Dwarf Sperm Whales in the Gulf of Mexico

open access: yesFrontiers in Marine Science, 2019
Pygmy sperm whales (Kogia breviceps) and dwarf sperm whales (Kogia sima) are deep diving cetaceans that commonly strand along the coast of the southeast US, but that are difficult to study visually at sea because of their elusive behavior.
John A. Hildebrand   +7 more
doaj   +1 more source

Kogia breviceps (pygmy sperm whale) - AMNH-215172

open access: yes, 2022
Kogia breviceps (pygmy sperm whale) - AMNH-215172 - -unknown sex - unknown length - Pelvic location - American Museum of Natural ...

core  

Kogia breviceps (pygmy sperm whale) - AMNH-35912

open access: yes, 2022
Kogia breviceps (pygmy sperm whale) - AMNH-35912 -unknown sex - unknown length - Pelvic location - American Museum of Natural ...

core  

Image_1_Characterization of Insulin and Glucagon Genes and Their Producing Endocrine Cells From Pygmy Sperm Whale (Kogia breviceps).JPEG

open access: yes, 2020
Insulin and glucagon are hormones secreted by pancreatic β and α cells, respectively, which together regulate glucose homeostasis. Dysregulation of insulin or glucagon can result in loss of blood glucose control, characterized by hyperglycemia or ...
Reyilamu Aierken (8647641)   +5 more
core   +1 more source

Clicking in Shallow Rivers : Short-Range Echolocation of Irrawaddy and Ganges River Dolphins in a Shallow, Acoustically Complex Habitat [PDF]

open access: yes, 2013
Toothed whales (Cetacea, odontoceti) use biosonar to navigate their environment and to find and catch prey. All studied toothed whale species have evolved highly directional, high-amplitude ultrasonic clicks suited for long-range echolocation of prey in ...
Mansur Rubaiyat M.   +21 more
core   +1 more source

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

open access: yesIntegrative 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   +10 more
wiley   +1 more source

Killer Whales in the Central Tropical Pacific: Occurrence, Resightings, Morphology, and Acoustics

open access: yesMarine Mammal Science, Volume 42, Issue 3, July 2026.
ABSTRACT Compared to their well‐studied coastal temperate counterparts, killer whales (Orcinus orca) in tropical‐subtropical and oceanic areas are under‐documented. We used sighting, photo‐identification, and acoustic data of killer whales in the central tropical Pacific (CTP), collected from multiple platforms between 2002 and 2023, to assess their ...
Marie C. Hill   +4 more
wiley   +1 more source

Occurrence and Whistle Characteristics of Small Odontocetes in Two Coastal Regions of the Sea of Japan

open access: yesMarine Mammal Science, Volume 42, Issue 3, July 2026.
ABSTRACT This study investigated the occurrence and whistle characteristics of small odontocetes in Wakasa Bay and Aso Bay, located in the coastal waters of the Sea of Japan, where ecological data are limited. Passive acoustic monitoring using A‐tag and SoundTrap was conducted from 2022 to 2024, with detections on 8.8% and 12.4% of monitoring days at ...
Satoko S. Kimura   +2 more
wiley   +1 more source

Evolutionary Patterns among Living and Fossil Kogiid Sperm Whales: Evidence from the Neogene of Central America.

open access: yesPLoS ONE, 2015
Kogiids are known by two living species, the pygmy and dwarf sperm whale (Kogia breviceps and K. sima). Both are relatively rare, and as their names suggest, they are closely related to the sperm whale, all being characterized by the presence of a ...
Jorge Velez-Juarbe   +3 more
doaj   +1 more source

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