Results 31 to 40 of about 1,001 (194)

Histochemical indications for a chemically complex signal produced by the cervical gill slit gland of the pygmy sperm whale (Kogia breviceps). [PDF]

Anat Rec (Hoboken)
Abstract The pygmy sperm whale (Kogia breviceps) possesses an exocrine gland associated with its false gill slit pigmentation pattern. The cervical gill slit gland is a compound tubuloalveolar gland that produces a holocrine secretion and displays maturational changes in size and secretory histology. While the morphology of the cervical gill slit gland
Keenan TF, McLellan WA, Rommel SA, Costidis AM, Harms CA, Thewissen JGM, Rehorek SJ, Rotstein DS, Gay MD, Taylor AR, Koopman HN, Wang Y, Kamel S, Pabst DA.   +13 more
europepmc   +2 more sources

Linking Comparative Genomics, Morphology and In Vitro Assays to Understand Deep Diving in Cetaceans. [PDF]

Mol Ecol
Molecular Ecology, Volume 34, Issue 22, November 2025.
Thorstensen MJ.
europepmc   +2 more sources

Audiograms and click spectra of seven novel and seldom-tested odontocetes

Frontiers in Marine Science, 2022
The use of auditory evoked potentials has been promoted as a means by which to collect audiometric information from odontocete cetaceans that are rarely encountered in stranding situations.
Dorian S. Houser, Lauren Noble, Erin Fougeres, Jason Mulsow, James J. Finneran   +4 more
doaj   +1 more source

A new kogiid sperm whale from northern Italy supports psychrospheric conditions in the early Pliocene Mediterranean Sea [PDF]

Acta Palaeontologica Polonica, 2019
Among living cetaceans, dwarf and pygmy sperm whales (Kogia) are the only members of the family Kogiidae, regarded as diminutive and elusive relatives of the great sperm whale Physeter. Kogiids are known as fossils by several skulls, teeth, and ear bones
Alberto Collareta, Franco Cigala Fulgosi, Giovanni Bianucci   +2 more
doaj   +1 more source

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

Frontiers 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, Kaitlin E. Frasier, Simone Baumann-Pickering, Sean M. Wiggins, Karlina P. Merkens, Lance P. Garrison, Melissa S. Soldevilla, Mark A. McDonald   +7 more
doaj   +1 more source

Relationship of stranded cetaceans in Thai territorial waters to global populations: Mitochondrial DNA diversity of Cuvier's beaked whale, Indo Pacific finless porpoise, pygmy sperm whale, and dwarf sperm whale

Science Progress, 2022
Cetaceans inhabit oceans throughout the world. Four specific odontocetes, namely Cuvier's beaked whale ( Ziphius cavirostris ), Indo Pacific finless porpoise ( Neophocaena phocaenoides ), pygmy sperm whale ( Kogia breviceps ), and dwarf sperm whale ...
Promporn Piboon, Napat Kriengsakpichit, Anocha Poommouang, Kittisak Buddhachat, Janine L. Brown, Jatupol Kampuansai, Siriwadee Chomdej, Patcharaporn Kaewmong, Kongkiat Kittiwattanawong, Korakot Nganvongpanit   +9 more
doaj   +1 more source

Host phylogeny and life history stage shape the gut microbiome in dwarf (Kogia sima) and pygmy (Kogia breviceps) sperm whales [PDF]

Scientific Reports, 2020
AbstractGut microbiomes perform crucial roles in host health and development, but few studies have explored cetacean microbiomes especially deep divers. We characterized the gut microbiomes of stranded dwarf (Kogia sima) and pygmy (K. breviceps) sperm whales to examine the effects of phylogeny and life stage on microbiome composition and diversity. 16S
Denison, Elizabeth R., Rhodes, Ryan G., McLellan, William A., Pabst, D. Ann, Erwin, Patrick M.   +4 more
openaire   +2 more sources

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

PLoS 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, Aaron R Wood, Carlos De Gracia, Austin J W Hendy   +3 more
doaj   +1 more source

Convergent evolution in toothed whale cochleae

BMC Evolutionary Biology, 2019
Background Odontocetes (toothed whales) are the most species-rich marine mammal lineage. The catalyst for their evolutionary success is echolocation - a form of biological sonar that uses high-frequency sound, produced in the forehead and ultimately ...
Travis Park, Bastien Mennecart, Loïc Costeur, Camille Grohé, Natalie Cooper   +4 more
doaj   +1 more source

Evolución y ecología trófica de los cachalotes (Physeteroidea) del Cenozoico en la costa del Perú: una revisión

Bulletin de l'Institut Français d'Études Andines, 2023
The complex evolutionary history of cetaceans is the result of a series of ‘turnovers’ events, adaptive radiations and a series of different morphological transformations.
Fernando Del Águila Grondona, Daniel Barona   +1 more
doaj   +1 more source