Results 21 to 30 of about 405 (141)

First records of dwarf sperm whale (Kogia sima) from the Union of the Comoros [PDF]

Marine Biodiversity Records, 2016
The world distribution of dwarf and pygmy sperm whales (Cetacea: Kogiidae) [Kogia spp.] is poorly known, and derived mostly from records of stranded animals. At sea, both species are elusive and difficult to identify. We photo-documented the presence of dwarf sperm whale (Kogia sima) in the waters of the Union of the Comoros. All three occurrences were
Marco Bonato, Cristina Giacoma, Giacoma Cristina   +2 more
exaly   +3 more sources

Morphological and morphometric sperm analysis of dwarf sperm whale (Kogia sima)

Acta Scientiarum: Biological Sciences
Nowadays, an increase in the number of marine species at risk of extinction has been observed. Therefore, studies on the reproductive characteristics of these animals are essential.
Giovana Alcantara Garcia, Daniel de Souza Ramos Angrimani, Jociery Einhardt Vergara Parente, Juliana Plácido Guimarães   +3 more
doaj   +2 more sources

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

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   +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   +2 more sources

Primeros registros de cachalotes, Physeter macrocephalus y Kogia sima, en aguas caribeñas de la República Dominicana First record of sperm whales, Physeter macrocephalus and Kogia sima, in Caribbean waters of the Dominican Republic

Revista Mexicana de Biodiversidad, 2012
Éste es el primer registro del cachalote (Physeter macrocephalus) y del cachalote enano (Kogia sima) para el área de Bayahibe en República Dominicana.
Laura Vázquez-Castán, José Ángel-Galindo, Arturo Serrano, Inés Sellares-Blasco, Patricia Lancho-Diéguez   +4 more
doaj   +1 more source

Genetic characterization, age and reproductive status of dwarf sperm whales (Kogia sima) stranded along the Italian coastlines [PDF]

Mediterranean Marine Science
The knowledge of the life history traits of cetaceans, especially in the case of species that are difficult to observe in the wild, often benefits from the study of stranded individuals. The dwarf sperm whale (Kogia sima) is a vagrant cetacean species in the Mediterranean Sea, which is rarely sighted in water and occasionally is found stranded along ...
MAIO, NICOLA, FIORAVANTI, TATIANA, LATINI, LUCREZIA, PETRACCIOLI, AGNESE, MEZZASALMA, MARCELLO, INSACCO, GIANNI, SPLENDIANI, ANDREA, POLLARO, FRANCESCO, GUARINO, FABIO MARIA, CAPUTO BARUCCHI, VINCENZO   +9 more
core   +8 more sources

Complete Mitogenome of Family Kogiidae (Kogia breviceps and Kogia sima) from Indian Waters

Genetics of Aquatic Organisms
The only two extant species of the genus Kogia, the pygmy sperm whale (Kogia breviceps) and the dwarf sperm whale (Kogia sima), are a unique find in the world's oceans. This study presents the first complete mitochondrial genomes of K. breviceps and K. sima from Indian waters. The mitogenomes of K. breviceps and K.
Sherine Sonia Cubelio
exaly   +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

Cetacean brain evolution: Dwarf sperm whale (Kogia sima) and common dolphin (Delphinus delphis) - An investigation with high-resolution 3D MRI. [PDF]

Brain, behavior and evolution, 2010
This study compares a whole brain of the dwarf sperm whale (Kogia sima) with that of a common dolphin (Delphinus delphis) using high-resolution magnetic resonance imaging (MRI). The Kogia brain was scanned with a Siemens Trio Magnetic Resonance scanner in the three main planes.
Oelschläger, H.H.A., Ridgway, S. H., Knauth, M.   +2 more
openaire   +6 more sources

Metagenomic Insights Into the Role of Gut Microbes in the Defensive Ink "Tsunabi" of Physeteroid Whales. [PDF]

Ecol Evol
Whales of the superfamily Physeteroidea exhibit a unique visual defense mechanism involving the release of dark reddish‐brown feces (locally called “tsunabi‐ink” in Japan) into the water. This study proposes that tsunabi‐ink is a metabolic byproduct of shifts in the gut microbial community, influenced by the host's digestive physiology and foraging ...
Takeuchi H, Matsuishi TF, Hayakawa T.
europepmc   +2 more sources