Results 1 to 10 of about 11,568 (252)

Back to Water: Signature of Adaptive Evolution in Cetacean Mitochondrial tRNAs. [PDF]

open access: yesPLoS ONE, 2016
The mitochondrion is the power plant of the eukaryotic cell, and tRNAs are the fundamental components of its translational machinery. In the present paper, the evolution of mitochondrial tRNAs was investigated in the Cetacea, a clade of Cetartiodactyla ...
Stefano Montelli   +4 more
doaj   +12 more sources

Alterations of pleiotropic neuropeptide-receptor gene couples in Cetacea [PDF]

open access: yesBMC Biology
Background Habitat transitions have considerable consequences in organism homeostasis, as they require the adjustment of several concurrent physiological compartments to maintain stability and adapt to a changing environment.
Raul Valente   +7 more
doaj   +2 more sources

Phylogeny and adaptive evolution of the brain-development gene microcephalin (MCPH1) in cetaceans [PDF]

open access: yesBMC Evolutionary Biology, 2011
Background Representatives of Cetacea have the greatest absolute brain size among animals, and the largest relative brain size aside from humans. Despite this, genes implicated in the evolution of large brain size in primates have yet to be surveyed in ...
Montgomery Stephen H   +3 more
doaj   +8 more sources

Records of Lancashire Cetacea [PDF]

open access: bronzeNature, 1942
As records of Lancashire cetaceans are few, I thought it worth recording that when told of a 'big porpoise' washed up on the west Lancashire coast at Birkdale, Southport, on September 23, 1942, I identified it as a young male bottle-nosed dolphin (Tursiops truncatus Montagu) and took the following measurements: length 105 in., flippers 14 in., tail ...
Eric Hardy
openalex   +3 more sources

Order Cetacea

open access: gold, 1982
James H. Honacki, Kenneth E. Kinman, James W. Koeppl (1982): Order Cetacea. In: James H. Honacki, Kenneth E. Kinman, James W. Koeppl (Eds): Mammal Species of the World (1st Edition). Lawrence, Kansas, USA: Alien Press, Inc. & The Association of Systematics Collections: 290-304, ISBN: 0-89327-235-3, DOI: http://doi.org/10.5281/zenodo ...
James H. Honacki   +2 more
openalex   +4 more sources

Vertebral osteology in Delphinidae (Cetacea) [PDF]

open access: bronzeZoological Journal of the Linnean Society, 2004
Vertebral anatomy in delphinid cetaceans exhibits marked heterogeneity. Description and functional interpretation of this variability is facilitated by the recognition of structural units along the column whose boundaries transgress those of the classical mammalian series. Vertebral anatomy of the killer whale (Orcinus orca) and the Atlantic whitesided
Emily A. Buchholtz, STEPHANIE A. SCHUR
openalex   +4 more sources

Heterochrony and Oophagy Underlie the Evolution of Giant Filter-Feeding Lamniform Sharks. [PDF]

open access: yesEvol Dev
Retention of juvenile craniofacial characteristics by paedomorphosis (heterochrony) may have facilitated the evolution of gigantism in filter‐feeding lamniform sharks, by increasing the efficiency of prey acquisition. ABSTRACT Evolutionary transitions toward gigantic body sizes have profound consequences for the structure and dynamics of ecological ...
Gayford JH   +3 more
europepmc   +2 more sources

A new diminutive fossil ziphiid from the deep-sea floor off northern Chile and some remarks on the body size evolution and palaeobiogeography of the beaked whales [PDF]

open access: yesActa Palaeontologica Polonica, 2023
The evolutionary history of the beaked whales (Ziphiidae), odontocetes nowadays adapted to deep diving, is well known thanks to a significant fossil record mainly from the deep ocean floors.
Giovanni Bianucci   +3 more
doaj   +1 more source

PERCEPÇÃO DE ALUNOS DE GRADUAÇÃO SOBRE ECOLOGIA E CONSERVAÇÃO DE CETÁCEOS, FORTALEZA-CE

open access: yesHolos, 2021
Cetáceos são mamíferos aquáticos que habitam boa parte do globo, e que tornaram-se ameaçadas devido a ações como caças ilegais, poluição e turismo. Com isso, objetivou-se avaliar a percepção de alunos de graduação sobre Ecologia e Conservação de Cetáceos.
Marcos Adelino Almeida Filho   +4 more
doaj   +1 more source

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