Results 51 to 60 of about 26,897 (235)

A Marsupial Oncovirus?

Journal of General Virology, 1979
A virus-like particle was observed in two continuous cell lines derived from the marsupial Sminthopsis crassicaudata (Fat-tailed Dunnart). The development of the particle was similar to the development of D-type oncoviruses. Initially, a crescentof nucleoid material was observed near the nucleus in the region of the Golgi apparatus.
R C, Hamilton, A, MacGregor, D, Pye
openaire   +2 more sources

Quantitative assessment of masticatory muscles based on skull muscle attachment areas in Carnivora

The Anatomical Record, EarlyView.
Abstract Masticatory muscles are composed of the temporalis, masseter, and pterygoid muscles in mammals. Each muscle has a different origin on the skull and insertion on the mandible; thus, all masticatory muscles contract in different directions. Collecting in vivo data and directly measuring the masticatory muscles anatomically in various Carnivora ...
Kai Ito, Mugino O. Kubo, Ryo Kodera, Sei‐ichiro Takeda, Hideki Endo   +4 more
wiley   +1 more source

Diversity of color vision: not all Australian marsupials are trichromatic. [PDF]

PLoS ONE, 2010
Color vision in marsupials has recently emerged as a particularly interesting case among mammals. It appears that there are both dichromats and trichromats among closely related species.
Wiebke Ebeling, Riccardo C Natoli, Jan M Hemmi   +2 more
doaj   +1 more source

Aerobic power, huddling and the efficiency of torpor in the South American marsupial, Dromiciops gliroides. [PDF]

, 2012
During periods of cold, small endotherms depend on a continuous supply of food and energy to maintain euthermic body temperature (T(b)), which can be challenging if food is limited. In these conditions, energy-saving strategies are critical to reduce the
Chappell, Mark A, Contreras, Carolina, Cortés, Pablo, Franco, Marcela, Nespolo, Roberto F, Soto-Gamboa, Mauricio   +5 more
core   +3 more sources

Synapsids and sensitivity: Broad survey of tetrapod trigeminal canal morphology supports an evolutionary trend of increasing facial tactile specialization in the mammal lineage

The Anatomical Record, EarlyView.
Abstract The trigeminus nerve (cranial nerve V) is a large and significant conduit of sensory information from the face to the brain, with its three branches extending over the head to innervate a wide variety of integumentary sensory receptors, primarily tactile.
Juri A. Miyamae, Julien Benoit, Irina Ruf, Zoleka Sibiya, Bhart‐Anjan S. Bhullar   +4 more
wiley   +1 more source

A perspective from the Mesozoic: Evolutionary changes of the mammalian skull and their influence on feeding efficiency and high‐frequency hearing

The Anatomical Record, EarlyView.
Abstract The complex evolutionary history behind modern mammalian chewing performance and hearing function is a result of several changes in the entire skeletomuscular system of the skull and lower jaw. Lately, exciting multifunctional 3D analytical methods and kinematic simulations of feeding functions in both modern and fossil mammals and their ...
Julia A. Schultz
wiley   +1 more source

Characterization of extracellular spike waveforms recorded in wallaby primary visual cortex

Frontiers in Neuroscience, 2023
Extracellular recordings were made from 642 units in the primary visual cortex (V1) of a highly visual marsupial, the Tammar wallaby. The receptive field (RF) characteristics of the cells were objectively estimated using the non-linear input model (NIM),
Young Jun Jung, Young Jun Jung, Young Jun Jung, Shi H. Sun, Ali Almasi, Molis Yunzab, Hamish Meffin, Michael R. Ibbotson, Michael R. Ibbotson, Michael R. Ibbotson   +9 more
doaj   +1 more source

Structure, ontogeny and evolution of the patellar tendon in emus (Dromaius novaehollandiae) and other palaeognath birds [PDF]

, 2014
The patella (kneecap) exhibits multiple evolutionary origins in birds, mammals, and lizards, and is thought to increase the mechanical advantage of the knee extensor muscles.
Alexander, Baker, Baraibar, Beale, Beale, Benjamin, Biggs, Bland, Bourdon, Bourdon, Brinkmann, Buck, Chadwick, Chiappe, Clarke, Clarke, Cooper, Cracraft, de Vriese, Deeming, Drenowatz, Dye, Fowler, Gadow, Gadow, Gagliano, Gangl, Goetz, Goonewardene, Hackett, Haines, Haines, Harshman, Hashimoto, Haughton, Hogg, Hou, Houde, Hutchinson, Johnston, Järvinen, Józsa, Kaiser, Khan, Lansdown, Lee, Livezey, Livezey, Macalister, Maddison, Maisano, Maxwell, McGowan, Mitchell, Naldo, Owen, Owen, O’Brien, Parker, Parsons, Patak, Pearson, Phillips, Picasso, Pourlis, Reese, Sales, Sarin, Schweitzer, Shanthi, Sharma, Smith, Spencer, Stannius, Stewart, Sánchez-Villagra, Thompson, Turvey, Turvey, Vickaryous, Vigorita, Vogel, von Kossa, Wang, Zhou   +84 more
core   +3 more sources

Comparative and functional anatomy of masticatory muscles and bite force in opossums (Didelphimorphia, Didelphidae)

The Anatomical Record, EarlyView.
We describe the functional anatomy of masticatory muscles in nine opossums, finding a generalized anatomical pattern with differences related to skull morphology. Variation in quantitative myological data and estimated bite force was mostly related to size, and the increase in bite force supports dietary diversification associated with size increase ...
Juann A. F. H. Abreu, Diego Astúa
wiley   +1 more source

Population structure and vertical stratification of Micoureus paraguayanus (Didelphimorphia, Didelphidae) in lowland atlantic coastal forest fragments, southern Brazil [PDF]

Biotemas, 2006
In order to analyze Micoureus paraguayanus population structure in function of the seasonality and habitats in disturbed forest fragments, a study was carried out on three forest fragments with differences in size, isolation and degrees of deforestation ...
Helena B. Pavese, Fernando L. Souza, Fernando V. B. Goulart, Maurício E. Graipel   +3 more
doaj