Results 71 to 80 of about 12,949 (225)

Histaminergic system in the tree shrew brain

Journal of Comparative Neurology, 1989
AbstractThis study mapped the histamine‐immunoreactive neuronal system in the brain of the tree shrew (Tupaia belangeri) and compared its structure with that of the rat and guinea pig. The histamine‐containing cell bodies lay in the posterior ventral hypothalamus in the tuberomammillary complex, as in the rodents.
Airaksinen, Matti S., Flügge, Gabriele, Fuchs, Eberhard, Panula, Pertti   +3 more
openaire   +3 more sources

Artificial Irrigation Impacts the Seasonal Occurrence of Pathogenic Leptospira in Its Wild Reservoirs in a Mediterranean Environment

Zoonoses and Public Health, EarlyView.
ABSTRACT Background Human activities play a significant role in the emergence of infectious diseases. We aimed to test whether artificial irrigation affects the occurrence of a zoonotic bacteria sensitive to desiccation, pathogenic Leptospira species (pathoLep), in micromammals inhabiting Mediterranean ecosystems.
Cristina Ruiz, Ruth Rodríguez‐Pastor, Cristina Escolar, Henar Alonso, Javier Millán   +4 more
wiley   +1 more source

Metabolic Rate of Tree-Shrews (Urogale everetti)

Experimental Biology and Medicine, 1962
SummaryThe oxygen consumption of 32 Philippine tree-shrews was 0.87 ± 0.02 ec/g body wt/hr (mean and standard error). Expressed as Standard Metabolic Rate, this represented 29.7 ± 0.8 Cal/sq m body surface/hr, a value corresponding to that of laboratory rats of comparable weight and maturity. No sex difference was observed.
L E, NELSON, C W, ASLING
openaire   +2 more sources

Reversed impacts by specialist parasitoids and generalist predators may explain a phase lag in moth cycles : a novel hypothesis and preliminary field tests [PDF]

, 2013
Among cyclic populations of herbivores, inter-specific temporal synchrony has been attributed to both climatic factors and trophic interactions. In northern Europe, winter and autumnal moths undergo regular 9–11 year population cycles.
Ammunét, Tea, Heisswolf, Annette, Klemola, Netta, Klemola, Tero, Ruohomäki, Kai   +4 more
core  

Working memory learning method and astrocytes number in different subfields of rat's Hippocampus [PDF]

, 2008
The aim of this study was evaluation of the astrocytes number in different subfields of rat's Hippocampus after spatial learning with usage of Morris Water Maze technique and working memory method.
Abbas, P., Ahmad, H., Mehrdad, J., Naser, N., Yousef, S.   +4 more
core   +1 more source

Dehnel's Phenomenon in Mammals

Mammal Review, Volume 56, Issue 2, June 2026.
Some small mammals, which remain active year‐round, undergo reversible reductions in body size, braincase height, and the mass of internal organs, including the brain, from summer to winter. It is called Dehnel's phenomenon. In this review, we summarise knowledge of the mechanisms, adaptive value, and genetic basis of the phenomenon, and show how new ...
Jan R. E. Taylor, Cecilia Baldoni, Dina K. N. Dechmann   +2 more
wiley   +1 more source

Disparity of turbinal bones in placental mammals

The Anatomical Record, Volume 309, Issue 4, Page 749-777, April 2026.
Abstract Turbinals are key bony elements of the mammalian nasal cavity, involved in heat and moisture conservation as well as olfaction. While turbinals are well known in some groups, their diversity is poorly understood at the scale of placental mammals, which span 21 orders.
Quentin Martinez, Mark Wright, Benjamin Dubourguier, Kai Ito, Thomas van de Kamp, Elias Hamann, Marcus Zuber, Gabriel Ferreira, Rémi Blanc, Pierre‐Henri Fabre, Lionel Hautier, Eli Amson   +11 more
wiley   +1 more source

Geometry and dimensionality reduction of feature spaces in primary visual cortex [PDF]

, 2015
Some geometric properties of the wavelet analysis performed by visual neurons are discussed and compared with experimental data. In particular, several relationships between the cortical morphologies and the parametric dependencies of extracted features ...
Barbieri, Davide
core   +2 more sources

Immature Excitatory Neurons in the Postnatal Ferret Paralaminar Nuclei and Their Relationship to the Amygdala Across Species

Journal of Comparative Neurology, Volume 534, Issue 4, April 2026.
Left: Schematic of a coronal section of the adult ferret brain, showing the location of a collection of Dcx+ cells (green) ventrally to the amygdala (grey) in a region homologous to the PL in other species. These cells are spatially distributed either as individual cells in a dispersed field or in clusters (1). Cells in the ferret PL display molecular (
Lucía Inés Torrijos‐Saiz, Marco Ghibaudi, Malaz Sharief, Lovisa Ljungqvist Brinson, Arturo Alvarez‐Buylla, José Manuel García‐Verdugo, Vicente Herranz‐Pérez, Shawn Sorrells   +7 more
wiley   +1 more source

High‐throughput markerless pose estimation and home‐cage activity analysis of tree shrew using deep learning

Animal Models and Experimental Medicine
Background Quantifying the rich home‐cage activities of tree shrews provides a reliable basis for understanding their daily routines and building disease models.
Yangzhen Wang, Feng Su, Rixu Cong, Mengna Liu, Kaichen Shan, Xiaying Li, Desheng Zhu, Yusheng Wei, Jiejie Dai, Chen Zhang, Yonglu Tian   +10 more
doaj   +1 more source