Results 21 to 30 of about 954 (183)

Karyotypes and idiograms of sperm and pygmy sperm whales [PDF]

Hereditas, 2009
The somatic chromosomes of the sperm whale, Physeter catodon L. and the pygmy sperm whale, Kogia breviceps Blainville, were studied. The chromosome number of both species is 2n=42. The sperm and pygmy sperm whales are the only cetaceans, so far recorded, with a chromosome number deviating from 2n=44.
U, Arnason, K, Benirschke
openaire   +2 more sources

Astrocyte properties in cetacean cortices. [PDF]

Physiol Rep
Abstract Cetacean neurons are far more extensively studied in the scientific literature than the other principal cell type of the central nervous system—glia. To help address this knowledge gap, the current study profiled astrocytes in five cetacean species—Tursiops truncatus (Tt), Orcinus orca (Oo), Ziphius cavirostris (Zc), Pseudorca crassidens (Pc),
Venkatesh A, McClain AM, Le-Bert CR, Musser WB, Ridgway SH.   +4 more
europepmc   +2 more sources

Rod monochromacy and the coevolution of cetacean retinal opsins. [PDF]

PLoS Genetics, 2013
Cetaceans have a long history of commitment to a fully aquatic lifestyle that extends back to the Eocene. Extant species have evolved a spectacular array of adaptations in conjunction with their deployment into a diverse array of aquatic habitats ...
Robert W Meredith, John Gatesy, Christopher A Emerling, Vincent M York, Mark S Springer   +4 more
doaj   +1 more source

Detection of the elusive Dwarf sperm whale (Kogia sima) using environmental DNA at Malpelo island (Eastern Pacific, Colombia)

Ecology and Evolution, 2021
Monitoring large marine mammals is challenging due to their low abundances in general, an ability to move over large distances and wide geographical range sizes.
Jean‐Baptiste Juhel, Virginie Marques, Andrea Polanco Fernández, Giomar H. Borrero‐Pérez, Maria Mutis Martinezguerra, Alice Valentini, Tony Dejean, Stéphanie Manel, Nicolas Loiseau, Laure Velez, Régis Hocdé, Tom B. Letessier, Eilísh Richards, Florine Hadjadj, Sandra Bessudo, Felipe Ladino, Camille Albouy, David Mouillot, Loïc Pellissier   +18 more
doaj   +1 more source

Struvite Penile Urethrolithiasis in a Pygmy Sperm Whale (Kogia breviceps) [PDF]

Journal of Wildlife Diseases, 2004
Massive urolithiasis of the penile urethra was observed in an adult pygmy sperm whale (Kogia breviceps) stranded on Topsail Island, North Carolina, USA. Calculi occupied the urethra from just distal to the sigmoid flexure to the tip of the penis for a length of 43 cm. A urethral diverticulum was present proximal to the calculi. The major portion of the
Craig A, Harms, Rachel Lo, Piccolo, David S, Rotstein, Aleta A, Hohn   +3 more
openaire   +2 more sources

Koristocetus pescei gen. et sp. nov., a diminutive sperm whale (Cetacea: Odontoceti: Kogiidae) from the late Miocene of Peru [PDF]

Fossil Record, 2017
Among odontocetes, members of the family Kogiidae (pygmy and dwarf sperm whales) are known as small-sized and in many respects enigmatic relatives of the great sperm whale Physeter macrocephalus.
A. Collareta, A. Collareta, O. Lambert, C. de Muizon, M. Urbina, G. Bianucci   +5 more
doaj   +1 more source

Cetaceans Humerus Radiodensity by CT: A Useful Technique Differentiating between Species, Ecophysiology, and Age

Animals, 2022
Cetaceans are mammals that underwent a series of evolutionary adaptations to live in the aquatic environment, including morphological modifications of various anatomical structures of the skeleton and their bone mineral density (BMD); there are few ...
Francesco Maria Achille Consoli, Yara Bernaldo de Quirós, Manuel Arbelo, Stefania Fulle, Marco Marchisio, Mario Encinoso, Antonio Fernandez, Miguel A. Rivero   +7 more
doaj   +1 more source

Occurrence of Anisakis physeteris Baylis, 1923 and Pseudoterranova sp. (Nematoda) in Pygmy Sperm Whale Kogia breviceps (De Blainvillei, 1838) (Physeteridae) in Northeastern Coast of Brazil

Memorias do Instituto Oswaldo Cruz, 1998
An adult male pygmy sperm whale, Kogia breviceps (De Blainvillei, 1838) (Physeteridae), 2.73 m long was found stranded on Cacimba do Padre beach, Fernando de Noronha archipelago (3 degrees 51'S; 32 degrees 25'W), Brazil on 2 May 1987.
Cláudia Portes Santos, Liliane Lodi
doaj   +2 more sources

Marine mammals used as bait for improvised fish aggregating devices in marine waters of Ecuador, eastern tropical Pacific

Endangered Species Research, 2020
Fish aggregating devices (FADs) are floating objects typically used to attract and capture pelagic fish in industrial tuna fisheries. This study documents 9 cases, involving 31 marine mammals, of incidentally captured, killed or otherwise retrieved ...
Castro, C, Van Waerebeek, K, Cárdenas, D, Alava, JJ   +3 more
doaj   +1 more source

sj-png-1-sci-10.1177_00368504221103776 - Supplemental material for 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

, 2022
Supplemental material, sj-png-1-sci-10.1177_00368504221103776 for 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,
Kittisak Buddhachat (2795383), Janine L. Brown (7344869), Siriwadee Chomdej (6616448), Jatupol Kampuansai (589980), Kongkiat Kittiwattanawong (11273250), Korakot Nganvongpanit (2795374), Promporn Piboon (12695956), Patcharaporn Kaewmong (2795380), Napat Kriengsakpichit (12695959), Anocha Poommouang (11476144)   +9 more
core   +1 more source