scholarly journals Mammalia, Lagomorpha, Leporidae, Oryctolagus cuniculus Linneaus, 1758: new record and its potential dispersal corridors for northern Mendoza, Argentina

Check List ◽  
2011 ◽  
Vol 7 (4) ◽  
pp. 565 ◽  
Author(s):  
Maria Fernanda Cuevas ◽  
Veronica Chillo ◽  
Ariadna Marchetta ◽  
Ricardo A. Ojeda
Keyword(s):  
Exotic Species ◽  
New Record ◽  
Oryctolagus Cuniculus ◽  
Structure And Function ◽  
European Rabbit ◽  
Natural Ecosystems ◽  
Natural Reserve ◽  
Dispersal Corridors ◽  
Surrounding Areas ◽  
And Function

The introduction of exotic species can cause important changes in the structure and function of natural ecosystems. This note reports the introduction of the European rabbit, Oryctolagus cuniculus, into Villavicencio Natural Reserve in Mendoza, Argentina. Individuals were introduced from a breeding facility within the reserve. This study assessed the possible establishment of the species as well as its potential dispersal corridors. Our findings suggest that the rabbit could be using the riverbeds as dispersal corridors. We consider that O. cuniculus is in the establishment stage and can become a potential invader of new environments in the reserve and surrounding areas. 

The development, structure, and function of the submandibular cutaneous (chin) glands in the rabbit.

1964 ◽  
Vol 12 (3) ◽  
pp. 340 ◽  
Author(s):  
AG Lyne ◽  
GS Molyneux ◽  
R Mykytowycz ◽  
PF Parakkal
Keyword(s):  
Oryctolagus Cuniculus ◽  
Osmium Tetroxide ◽  
Structure And Function ◽  
Hair Follicles ◽  
Sweat Glands ◽  
Secretory Cells ◽  
Adult Males ◽  
Dark Cells ◽  
And Function ◽  
Development Structure

Embryological, histological, and histochemical features of the chin glands in the rabbit, Oryctolagus cuniculus (L.), are described. The glands are modified sweat glands which develop as appendages of the first hair follicles of the pelage. All the secretory cells are of the merocrine type, although some secrete in the typical apocrine manner. In the adult, the glands are much better developed in males than in females. Two main types of secretory cells were clearly seen in most animals, particularly adult males. Cells which stained heavily with osmium tetroxide (dark cells) were also present. No other mammalian cutaneous gland is so complex. Histochemical techniques to demonstrate enzymes revealed that particular glandular components contained large amounts of alkaline phosphatase and the whole gland was well supplied with nerves containing cholinesterases. The function of the secretion from these glands in marking territories is outlined.

The Comparison on Morphology and Histology of the Carassius auratus, Pelophylax nigromaculata and Oryctolagus cuniculus Lens

2011 ◽  
Vol 295-297 ◽  
pp. 585-588
Author(s):  
Qiu Sheng She ◽  
Zhao Hui Xie ◽  
Xiu Jie Zhang ◽  
Guan Jun Yang ◽  
Lin Na Shan
Keyword(s):  
Epithelial Cell ◽  
Light Microscopy ◽  
Organizational Structure ◽  
Oryctolagus Cuniculus ◽  
Carassius Auratus ◽  
Structure And Function ◽  
Behavioral Characteristics ◽  
Visual Ability ◽  
Pelophylax Nigromaculata ◽  
And Function

Using light microscopy to observe the Carassius auratus, Pelophylax nigromaculata and Oryctolagus cuniculus lens on morphology and histology, measuring the thickness of each layer, layers and density of epithelial cell and the diameter of nucleus, et al. Results show that: Carassius auratus, Pelophylax nigromaculata and Oryctolagus cuniculus are siginificantly different in lens organizational structure, its visual ability shows a gradual and improving trend, it shows that the three animals have consistency on structure and function of lens with Behavioral characteristics.

scholarly journals Global homogenization of the structure and function in the soil microbiome of urban greenspaces

2021 ◽  
Vol 7 (28) ◽  
pp. eabg5809
Author(s):  
Manuel Delgado-Baquerizo ◽  
David J. Eldridge ◽  
Yu-Rong Liu ◽  
Blessing Sokoya ◽  
Jun-Tao Wang ◽  
...  
Keyword(s):  
Management Practices ◽  
Gene Diversity ◽  
Well Being ◽  
Structure And Function ◽  
Soil Microbiome ◽  
Human Populations ◽  
Human Pathogens ◽  
Natural Ecosystems ◽  
Urban Greenspaces ◽  
And Function

The structure and function of the soil microbiome of urban greenspaces remain largely undetermined. We conducted a global field survey in urban greenspaces and neighboring natural ecosystems across 56 cities from six continents, and found that urban soils are important hotspots for soil bacterial, protist and functional gene diversity, but support highly homogenized microbial communities worldwide. Urban greenspaces had a greater proportion of fast-growing bacteria, algae, amoebae, and fungal pathogens, but a lower proportion of ectomycorrhizal fungi than natural ecosystems. These urban ecosystems also showed higher proportions of genes associated with human pathogens, greenhouse gas emissions, faster nutrient cycling, and more intense abiotic stress than natural environments. City affluence, management practices, and climate were fundamental drivers of urban soil communities. Our work paves the way toward a more comprehensive global-scale perspective on urban greenspaces, which is integral to managing the health of these ecosystems and the well-being of human populations.

scholarly journals An Assessment of Leporid Research and Landscape Ecology Metrics in a European Landscape

2013 ◽  
Vol 6 (1) ◽  
pp. 5-17 ◽  
Author(s):  
Kelsey Gilcrease
Keyword(s):  
Landscape Ecology ◽  
Landscape Metrics ◽  
Vegetation Structure ◽  
Habitat Type ◽  
Structure And Function ◽  
European Rabbit ◽  
European Hare ◽  
Ecological Processes ◽  
Research Findings ◽  
And Function

Abstract Leporids play a dynamic role in the ecosystem and assessments must be undertaken in order to improve research efforts and methods. Landscape ecology metrics are used to quantify components of leporid habitat such as vegetation structure, vegetation cover, habitat type, and fragmentation; however, the degree to which the metrics are utilized in leporid research is relatively unknown. This paper assessed fifty-three published, peer reviewed papers on leporids from various European countries on where the study was done, the species of leporid that was studied, the content of the study (i.e. what the paper focused on), the length of the study, the size of the study area, and the method of study. The quantified landscape metrics within these papers were assessed. This study found that most of the studies occurred in Spain, the European rabbit and European hare were the most studied leporids, many papers were concerned with habitat relationships, many of the studies were conducted in a year or less, many papers utilized pellet surveys and trapping, and the most common landscape metric utilized was habitat type. This survey of research on leporids highlights that there is a lack of utilizing landscape structure and function metrics such as slope, fragmentation, and edge effect. These are important variables to help connect structure and function of ecological processes in the context of leporid habitat and landscapes. It is recommended that leporid researchers and landscape planners exchange research findings so that the best planning practices can occur on the ground for the leporids

scholarly journals Análise microscópica na articulação temporomandibular a partir da mudança de direção do vetor de força da mandíbula em relação à base do crânio : estudo experimental em coelhos (Oryctolagus cuniculus l.)

2021 ◽  
Vol 40 (2) ◽  
pp. 66-72
Author(s):  
Deise Ponzoni ◽  
Edela Puricelli
Keyword(s):  
Temporal Bone ◽  
Oryctolagus Cuniculus ◽  
Mandibular Condyle ◽  
Structure And Function ◽  
Control Group ◽  
Articular Disc ◽  
Direction Change ◽  
The Moment ◽  
And Function ◽  
Experimental Group

The correlation between TMJ's growing, structure and function is consensual in the specialized literature. Until the moment, the little knowledge about post-birth changes are studied by observation of condylar growth and disc reestructuration. In an experimental model in rabbits (Oryctolagus cuniculus 1.), it was observed tecidual alterations of the TMJ's components — mandibular condyle, articular disc and temporal bone, face to a direction change of mandibular power axis, which has the incidence upon these structures. Twentyfour rabbit were divided in four groups. Two of each group formed a control group. Four experimental periods were established 15, 30, 60 and 90 days. The animals from the experimental group were submitted to surgical procedure involving the mandible right side, changing the direction of mandibular power axis, which has incidence in the TMJ. Histological observations of TMJ in the control group, at different times, the growth and development of this structure were showed, compatible to the normality. At experimental group, the change of mandibular power axis caused alteration of the mandibular condyle and the discal structure. Significative responses at temporal bone were observed too, as a process of osseous modelation, suggestive of growth of this cranial structure.

scholarly journals Structure and function of soil fauna communities in Amazonian anthropogenic and natural ecosystems

2001 ◽  
Vol 37 (4) ◽  
pp. 229-235 ◽  
Author(s):  
Hubert Höfer ◽  
Werner Hanagarth ◽  
Marcos Garcia ◽  
Christopher Martius ◽  
Elizabeth Franklin ◽  
...  
Keyword(s):  
Soil Fauna ◽  
Structure And Function ◽  
Natural Ecosystems ◽  
And Function

Structure and function of neural networks in the retina

1988 ◽  
Vol 46 ◽  
pp. 26-27
Author(s):  
Peter Sterling
Keyword(s):  
Ganglion Cells ◽  
Three Dimensional ◽  
Structure And Function ◽  
Synaptic Connections ◽  
Visual Axis ◽  
One Dimensional ◽  
Cat Retina ◽  
Ultrathin Sections ◽  
And Function ◽  
Insight Into

The synaptic connections in cat retina that link photoreceptors to ganglion cells have been analyzed quantitatively. Our approach has been to prepare serial, ultrathin sections and photograph en montage at low magnification (˜2000X) in the electron microscope. Six series, 100-300 sections long, have been prepared over the last decade. They derive from different cats but always from the same region of retina, about one degree from the center of the visual axis. The material has been analyzed by reconstructing adjacent neurons in each array and then identifying systematically the synaptic connections between arrays. Most reconstructions were done manually by tracing the outlines of processes in successive sections onto acetate sheets aligned on a cartoonist's jig. The tracings were then digitized, stacked by computer, and printed with the hidden lines removed. The results have provided rather than the usual one-dimensional account of pathways, a three-dimensional account of circuits. From this has emerged insight into the functional architecture.

Osseointegration interface of calcified bone and endosseous implants

1992 ◽  
Vol 50 (2) ◽  
pp. 1096-1097
Author(s):  
K.E. Krizan ◽  
J.E. Laffoon ◽  
M.J. Buckley
Keyword(s):  
Structure And Function ◽  
Titanium Implants ◽  
En Bloc ◽  
Endosseous Implants ◽  
Ultrastructural Studies ◽  
The Past ◽  
Cacodylate Buffer ◽  
One Year ◽  
And Function

With increase use of tissue-integrated prostheses in recent years it is a goal to understand what is happening at the interface between haversion bone and bulk metal. This study uses electron microscopy (EM) techniques to establish parameters for osseointegration (structure and function between bone and nonload-carrying implants) in an animal model. In the past the interface has been evaluated extensively with light microscopy methods. Today researchers are using the EM for ultrastructural studies of the bone tissue and implant responses to an in vivo environment. Under general anesthesia nine adult mongrel dogs received three Brånemark (Nobelpharma) 3.75 × 7 mm titanium implants surgical placed in their left zygomatic arch. After a one year healing period the animals were injected with a routine bone marker (oxytetracycline), euthanized and perfused via aortic cannulation with 3% glutaraldehyde in 0.1M cacodylate buffer pH 7.2. Implants were retrieved en bloc, harvest radiographs made (Fig. 1), and routinely embedded in plastic. Tissue and implants were cut into 300 micron thick wafers, longitudinally to the implant with an Isomet saw and diamond wafering blade [Beuhler] until the center of the implant was reached.

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