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Beyond thermoregulation: metabolic function of cetacean blubber in migrating bowhead and beluga whales.

The processes of lipid deposition and utilization, via the gene leptin (Lep), are poorly understood in taxa with varying degrees of adipose storage. This study examines how these systems may have adapted in marine aquatic environments inhabited by…

Seasonal and Ontogenetic Variation in Subcutaneous Adipose Of the Bowhead Whale (Balaena mysticetus).

Cetacean evolution was shaped by an extraordinary land-to-sea transition in which the ancestors of whales became fully aquatic. As part of this transition, these mammals evolved unusually thick blubber which acts as a metabolic reservoir as well as…

Sensory Hairs in the Bowhead Whale, Balaena mysticetus (Cetacea, Mammalia).

We studied the histology and morphometrics of the hairs of bowhead whales (Balaena mysticetus). These whales are hairless except for two patches of more than 300 hairs on the rostral tip of the lower lip and chin, the rostral tip of the upper lip,…

Severe Bone Loss as Part of the Life History Strategy of Bowhead Whales.

The evolution of baleen constituted a major evolutionary change that made it possible for baleen whales to reach enormous body sizes while filter feeding on tiny organisms and migrating over tremendous distances. Bowhead whales (Balaena mysticetus)…

Organization and distribution of glomeruli in the bowhead whale olfactory bulb.

Although modern baleen whales (Mysticeti) retain a functional olfactory system that includes olfactory bulbs, cranial nerve I and olfactory receptor genes, their olfactory capabilities have been reduced to a great degree. This reduction likely…

Tags: 2015, Baleen whale, Brain, Cetacea, Department of Anatomy & Neurobiology, George John C, Kishida Takushi, Mysticeti, NEOMED College of Medicine, Olfactory marker protein, Olfactory receptor, PeerJ, Suydam Robert S, Thewissen J G M, Usip Sharon

A Comparison of the Cortical Structure of the Bowhead Whale (Balaena mysticetus), a Basal Mysticete, with Other Cetaceans.

Few studies exist of the bowhead whale brain and virtually nothing is known about its cortical cytoarchitecture or how it compares to other cetaceans. Bowhead whales are one of the least encephalized cetaceans and occupy a basal phylogenetic position…

A Comparison of the Cortical Structure of the Bowhead Whale (Balaena mysticetus), a Basal Mysticete, with Other Cetaceans

Few studies exist of the bowhead whale brain and virtually nothing is known about its cortical cytoarchitecture or how it compares to other cetaceans. Bowhead whales are one of the least encephalized cetaceans and occupy a basal phylogenetic position…

Structure of the external auditory meatus of the Bowhead whale (Balaena mysticetus) and its relation to their seasonal migration.

The external auditory meatus (EAM) in many species of mysticete whales is filled with a waxy ear plug. Though this lamellated structure is often used to age a whale, its formation and development remain undescribed. It is thought that growth layer…

Tags: 2019, bowhead whale, Department of Anatomy & Neurobiology, Epithelium, external auditory meatus, George John C, Journal of anatomy, McBurney Denise M, NEOMED College of Medicine, Rehorek Susan J, seasonality, Stimmelmayr Rafael, Suydam Robert, Thewissen J G M

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