Results 21 to 30 of about 39,335 (333)

Comparative genomics reveals evolutionary loss of epiplakin in cetaceans

Scientific Reports, 2022
The adaptation of vertebrates to different environments was associated with changes in the molecular composition and regulation of epithelia. Whales and dolphins, together forming the clade cetaceans, have lost multiple epithelial keratins during or ...
Peter Fuchs, Corinne Drexler, Sonia Ratajczyk, Leopold Eckhart   +3 more
doaj   +1 more source

First Unmanned Aerial Vehicle Observation of Epimeletic Behavior in Indo-Pacific Humpback Dolphins

Animals, 2022
Epimeletic behavior has been reported in various species of cetaceans and sometimes in wild populations during vessel-based surveys. Epimeletic behavior in cetaceans involves complex social interactions which have been described using observational and ...
Tabris Yik-To Chung, Heysen Hei-Nam Ho, Henry Chun-Lok Tsui, Brian Chin-Wing Kot   +3 more
doaj   +1 more source

Accelerated evolution and diversifying selection drove the adaptation of cetacean bone microstructure

BMC Evolutionary Biology, 2019
Background The transition from land to sea by the ancestor of cetaceans approximately 50 million years ago was an incredible evolutionary event that led to a series of morphological, physiological, and behavioral adaptations. During this transition, bone
Di Sun, Xuming Zhou, Zhenpeng Yu, Shixia Xu, Inge Seim, Guang Yang   +5 more
doaj   +1 more source

The molecular evolution of genes previously associated with large sizes reveals possible pathways to cetacean gigantism

Scientific Reports, 2023
Cetaceans are a group of aquatic mammals with the largest body sizes among living animals, including giant representatives such as blue and fin whales.
Felipe André Silva, Érica M. S. Souza, Elisa Ramos, Lucas Freitas, Mariana F. Nery   +4 more
doaj   +1 more source

Intestinal Volvulus in Cetaceans [PDF]

Veterinary Pathology, 2012
Intestinal volvulus was recognized as the cause of death in 18 cetaceans, including 8 species of toothed whales (suborder Odontoceti). Cases originated from 11 institutions from around the world and included both captive ( n = 9) and free-ranging ( n = 9) animals. When the clinical history was available ( n = 9), animals consistently demonstrated acute
Begeman, L., St. Leger, J., Blyde, D., Jauniaux, Thierry, Lair, S., Lovewell, G., Raverty, S., Seibel, H., Siebert, U., Staggs, S., Martelli, P., Keesler, R.   +11 more
openaire   +3 more sources

Unraveling site fidelity and residency patterns of sperm whales in the insular oceanic waters of Macaronesia

Frontiers in Marine Science, 2022
Knowledge of the distribution and residency of pelagic marine megafauna, particularly deep-diving species, is scarce due to their high mobility over difficult-to-access oceanic areas and long periods underwater.
Rita Ferreira, Rita Ferreira, Lisa Steiner, Vidal Martín, Francesca Fusar Poli, Ana Dinis, Manfred Kaufmann, Manfred Kaufmann, Marc Fernandez, Marc Fernandez, Filipe Alves   +10 more
doaj   +1 more source

Cetacean Host-Pathogen Interaction(s): Critical Knowledge Gaps [PDF]

, 2018
Within the broad range of viral and non-viral pathogens infecting cetaceans, Cetacean Morbillivirus (CeMV), Herpesvirus (HV), Brucella ceti, and Toxoplasma gondii are of special concern, due to their impact(s) on the health and conservation of free ...
Centelleghe, Cinzia, Di Guardo, Giovanni, Mazzariol, Sandro   +2 more
core   +2 more sources

Insights into body size variation in cetaceans from the evolution of body-size-related genes

BMC Evolutionary Biology, 2019
Background Cetaceans exhibit an exceptionally wide range of body size, yet in this regard, their genetic basis remains poorly explored. In this study, 20 body-size-related genes for which duplication, mutation, or deficiency can cause body size change in
Yingying Sun, Yanzhi Liu, Xiaohui Sun, Yurui Lin, Daiqing Yin, Shixia Xu, Guang Yang   +6 more
doaj   +1 more source

Patterns of enrichment and acceleration in evolutionary rates of promoters suggest a role of regulatory regions in cetacean gigantism

BMC Ecology and Evolution, 2023
Background Cetaceans (whales, porpoises, and dolphins) are a lineage of aquatic mammals from which some species became giants. Only recently, gigantism has been investigated from the molecular point of view.
Felipe A. Silva, Agnello C. R. Picorelli, Giovanna S. Veiga, Mariana F. Nery   +3 more
doaj   +1 more source

Cetacean Intracytoplasmic Eosinophilic Globules: A Cytomorphological, Histological, Histochemical, Immunohistochemical, and Proteomic Characterization

Animals, 2023
The nature, etiopathogenesis, and clinicopathologic relevance of the prevalent intracytoplasmic eosinophilic globules (IEGs) within hepatocytes of cetaceans are unknown.
Antonio Fernández, Nakita Câmara, Eva Sierra, Manuel Arbelo, Yara Bernaldo de Quirós, Paul D. Jepson, Rob Deaville, Josué Díaz-Delgado, Cristian Suárez-Santana, Ayoze Castro, Julia N. Hernández, Ana Godinho   +11 more
doaj   +1 more source