Structure of the cerebral cortex of the humpback whale, Megaptera novaeangliae (Cetacea, Mysticeti, Balaenopteridae)

  title={Structure of the cerebral cortex of the humpback whale, Megaptera novaeangliae (Cetacea, Mysticeti, Balaenopteridae)},
  author={Patrick R. Hof and Estel Van der Gucht},
  journal={The Anatomical Record: Advances in Integrative Anatomy and Evolutionary Biology},
  • P. Hof, E. Van der Gucht
  • Published 1 January 2007
  • Biology
  • The Anatomical Record: Advances in Integrative Anatomy and Evolutionary Biology
Cetaceans diverged from terrestrial mammals between 50 and 60 million years ago and acquired, during their adaptation to a fully aquatic milieu, many derived features, including echolocation (in odontocetes), remarkable auditory and communicative abilities, as well as a complex social organization. [] Key Method We studied the cerebral cortex of the humpback whale (Megaptera novaeangliae) in comparison to another balaenopterid, the fin whale, and representative odontocetes. We observed several differences…
The neocortex of cetartiodactyls: I. A comparative Golgi analysis of neuronal morphology in the bottlenose dolphin (Tursiops truncatus), the minke whale (Balaenoptera acutorostrata), and the humpback whale (Megaptera novaeangliae)
The present data suggest that certain spiny neuron morphologies may be apomorphies in the neocortex of cetaceans as compared to other mammals and that neuronal dendritic extent covaries with brain and body size.
A Comparison of the Cortical Structure of the Bowhead Whale (Balaena mysticetus), a Basal Mysticete, with Other Cetaceans
It is demonstrated that many morphological and cytoarchitectural characteristics are conserved among cetaceans, while other features, such as a reduced temporal lobe, may characterize balaenids among mysticetes.
The Cerebral Cortex of the Pygmy Hippopotamus, Hexaprotodon liberiensis (Cetartiodactyla, Hippopotamidae): MRI, Cytoarchitecture, and Neuronal Morphology
The present study provides a comprehensive dataset of the neuroanatomy of H. liberiensis that sets the ground for future comparative studies including the larger Hippopotamus amphibius.
An analysis of von Economo neurons in the cerebral cortex of cetaceans, artiodactyls, and perissodactyls
The present results demonstrated that VENs were not restricted to highly encephalized or socially complex species, and their repeated emergence among distantly related species seems to represent convergent evolution of specialized pyramidal neurons.
The neocortex of cetaceans: cytoarchitecture and comparison with other aquatic and terrestrial species
The evolutionary process of readaptation to the aquatic environment was accompanied by extreme anatomical and physiological changes in the brain. This review discusses cortical specializations in the
Neocortical neuronal morphology in the Siberian Tiger (Panthera tigris altaica) and the clouded leopard (Neofelis nebulosa)
Comparison of neuronal morphology in a more diverse collection of larger felids may elucidate the comparative context for the relatively large size of the pyramidal neurons observed in the Siberian tiger and clouded leopard in the present study.
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It is suggested that the evolution of the large dolphin brain was possible due to a combination of different prerequisites based on adaptations to the aquatic environment including the sonar system and the rudimentary pelvic girdle did not limit brain size at birth.
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Overall, AChE‐staining suggested that cholinergic innervation, neural pathways and function of the hippocampal formation of the AWSD is conserved, similar to other mammals.
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T HE largest animals that have ever lived belong to the order Cetacea. Man in general and biologists in particular have been intrigued by the size of these mammals and by their adaptation to a
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The present study is the first to describe the locus coeruleus complex in a cetacean species and, at 1.3 kg, represents the largest non‐human brain to date in which the LC has been investigated.
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