ABSTRACT: Some large-seeded plants depend heavily on agoutis for seedling recruitment. The importance of Dasyprocta leporina as seed disperser of the Atlantic Forest palm Astrocaryum aculeatissimum was evaluated using camera-traps and seed removal experiments. Agoutis were registered at 67% of the records obtained through the monitoring of mature fruits; palms were visited from 07:00 to 18:45 h. Dispersal distances ranged from 0.5 to 48.7 m (mean ± sd = 6.8 ± 9.1 m) and most of the removed seeds were buried (57.8%). These results corroborate the importance of agoutis for the seed dispersal of Astrocaryum palms.. RESUMO: A cutia Dasyprocta leporina (RODENTIA: DASYPROCTIDAE) como dispersora de sementes da palmeira Astrocaryum aculeatissimum. Algumas plantas de sementes grandes são fortemente dependentes de cutias para o recrutamento de suas plântulas. A importância de Dasyprocta leporina como dispersora de sementes da palmeira da Mata Atlântica Astrocaryum aculeatissimum foi avaliado com o ...
Define viscacha. viscacha synonyms, viscacha pronunciation, viscacha translation, English dictionary definition of viscacha. also viz·ca·cha n. Any of several South American rodents of the genera Lagostomus and Lagidium, having large ears and a bushy tail, some species of which...
A tuco-tuco is a neotropical rodent in the family Ctenomyidae. Tuco-tucos belong to the only living genus of the family Ctenomyidae, Ctenomys, but they include approximately 60 different species. The common name, "tuco-tuco" comes from the "tuc-tuc" sound they make while they dig their burrows. The relationships among the species are debated by taxonomists. It has been described that they are in a state of "taxonomic chaos", but banded karyotypes have been used to help make progress on their taxonomic study. Their closest relatives are degus and other octodontids. All species of tuco-tucos are found in South America from Peru and central Brazil southward. The tuco-tucos of South America have an ecological role equivalent to that of the pocket gophers of North America. They occupy an ecological niche previously taken by gondwanatheres such as Patagonia earlier in the Cenozoic. Tuco-tucos have heavily built cylindrical bodies with short legs and their pelage ranges in color from black to light ...
The Hystricognathi are an infraorder of rodents, distinguished from other rodents by the bone structure of their skulls. The masseter medialis (a jaw muscle) passes partially through the infraorbital foramen and connects to the bone on the opposite side. This, together with their lack of an infraorbital plate and the relative size of the infraorbital foramen, distinguishes hystricognaths from other rodent groups. The 18 families within the Hystricognathi are divided into two parvorders, the Phiomorpha and the Caviomorpha. The Caviomorpha are mostly native to South America, with a few species in North America, while the Phiomorpha occur in the Old World. Play behavior has been observed in seven hystricognath families. The caviomorphs chase each other, play-wrestle, and gallop. The longer-legged species chase more often than the shorter-legged species. They also rotate their heads and body muscles as a form of play. Bathyergidae (African mole rats) Hystricidae (Old World porcupines) Petromuridae ...
Conovers tuco-tucos are large for this genus, and can reach weights in excess of 1 kg. This species strongly resembles North American pocket gophers (Geomyidae). As a fossorial species, they have a robust and cylindrical body, large head, short and sparsely haired tail, and short, muscular neck and forelimbs. The eyes are medium-sized and positioned to enable these animals to look out of the burrow without exposing the whole body. The external ears are very small, another adapation to fossorial living. The forelimbs are slightly shorter than the hindlimbs, and all digits have claws. The claws on the forefeet are the longest, and are used for loosening packed earth.. The skin seems loosely applied to the body, possibly making it easier for these animals to turn around in narrow burrows. The soles of the hind feet are equipped with comb-like bristles, composed of hair fringes, and are used to groom dirt from the fur. (Eisenberg and Redford, 1992; Nowak, 1991). Conovers tuco-tucos have a tan ...
Oliveira B.; Marangoni S.; Araujo A.L.; Soares M.A., 1985: Evidence of immunoglobulin g 1 and immunoglobulin g 2 antibodies in capivara hydrochoerus hydrochaeris
This species occurs in the Reserva Nacional del Parque Nacional Nahuel Huapi (Woods and Kilpatrick 2005), although it is not clear if there are any conservation measures being taken to safe guard it in particular. This species is considered Critically Endangered in the Argentinian Red List (Diaz and Ojeda 2000 ...
Allard, M. W., M. M. Miyamoto, and R. L. Honeycutt. 1991. Tests for rodent polyphyly. Nature 353:610-611.. Beintema, J. J., K. Rodewald, G. Braunitzer, J. Czelusniak, and M. Goodman. 1991. Studies on the phylogenetic position of the Ctenodactylidae (Rodentia). Molecular Biology and Evolution 8:151-154.. Cao, Y., J. Adachi, T. A. Yano, and M. Hasegawa. 1994. Phylogenetic place of guinea-pigs - no support of the rodent-polyphyly hypothesis from maximum-likelihood analyses of multiple protein sequences. Molecular Biology and Evolution 11:593-604.. Cao, Y., N. Okada, and M. Hasegawa. 1997. Phylogenetic position of guinea pigs revisited. Molecular Biology and Evolution 14:461-464.. Carleton, M. 1984. Introduction to rodents. Pages 255-265 in Orders and Families of Recent Mammals of the World (S. Anderson and J. K. Jones Jr. eds.) John Wiley and Sons, New York. Carleton, M. D. and Musser, G. G. 2005. Order Rodentia. Pages 745-752 in Mammal Species of the World, 3rd Ed.. Catzeflis, F. M., J. P. ...
Another list of my favorite images of capybaras. List #1 may be viewed here: http://www.listal.com/list/favorite-images-of-capybaras http://en.wikipedia.org/wiki/Capybara The capybara (Hydrochoerus hydrochaeris) is the largest rodent in the
There have long been suspicions and suggestions that ,Order Rodentia might be polyphyletic, and Caviomorpha seems ,to be the group most likely in need of being split off from ,rodents. I was busy with bacteria at the time, but a few ,years ago there was some new evidence published concerning ,this issue, but I dont recall where. Could someone ,refresh my memory about the caviomorph debate (anything on ,the internet about this?). , Cheers, Ken Kinman Perhaps of some relevance is concerns the monophyly of the Hystricomorpha (or whatever might pass for this group) including cavimorphs. Simpson had considered the group to be polyphyletic because of their occurence in the Old and New Worlds, while Croizat identified the group as Atlantic, and therefore monophyletic. A number of papers on morphology and genetics seem to corroborate the monophyly. Perhaps out of date with current developments, but some papers are cited in the panbiogeography book. John Grehan ...
УДК 595.422(470.21).ECOLOGICAL RELATIONSHIPS. OF GAMASID MITES (PARASITIFORMES: GAMASINA). WITH RODENTS (RODENTIA: CRICETIDAE) OF LAPLAND RESERVE..L. A. Bespyatova*, G. D. Kataev**..*Institute of Biology KRC RAS, Petrosavodsk, Russia, E-mail: ...
The order Rodentia is the most speciose group of mammals with muroids being the most diverse superfamily. Since they are represented in arboreal, semiaquatic, subterranean and terrestrial niches, rodents may exhibit morphological traits reflecting their adaptations to such diverse environments. This thesis focuses on the morphology of the endocranium, auditory bulla and cochlea in three tribes (Otomyini, Taterillini and Gerbillini) representing 10 species of African rodents, concentrating on their variability, function and adaptability, using micro-CT imaging and 3D shape comparative methods. Additionally, variations in cranial size were also studied in respective of global warming and climatic variables. Morphological changes/variations are a result of environmental change, therefore each chapter in this study details the effect of environmental change (in space and time) on different morphological traits i.e. general cranial size (chapter 2), cochlea and auditory bulla (chapter 3) and ...
Laonastes aenigmamus is an enigmatic rodent first described in 2005. Molecular and morphological data suggested that it is the sole representative of a new mammalian family, the Laonastidae, and a member of the Hystricognathi. However, the validity of this family is controversial because fossil-base …
Laonastes aenigmamus is an enigmatic rodent first described in 2005. Molecular and morphological data suggested that it is the sole representative of a new mammalian family, the Laonastidae, and a member of the Hystricognathi. However, the validity of this family is controversial because fossil-base …
GenDR A curated database of genes associated with dietary restriction in model organisms either from genetic manipulation experiments or gene expression profiling.. ...
Can you name the Animals of the order: Rodentia? Test your knowledge on this science quiz to see how you do and compare your score to others. Quiz by Mammalogy
Can you name some Rodentia species? Test your knowledge on this just for fun quiz to see how you do and compare your score to others. Quiz by eahimschoot
Coypu (Myocastor coypus) at Galikos river. I have visited Galikos and Kalochori lagoon many times and Ive always wanted to see a coypu. Out of sheer luck the last I were there I saw one sitting atop some reeds ...
Rats are primarily nocturnal although a major exception is the brown rat, which is active during both day and night. Rat is a general term applied to many members of different rodent families. In...
agent of Chagas disease. We established breeding colonies of these species to serve as experimental models in various parasitological studies. Both species of Thrichomys have all the requirements necessary to become excellent laboratory models: they can be easily maintained in the standard laboratory conditions and breed throughout the year and they do not have any special dietary demands and can be fed by standard food pellets designed for laboratory mice. Both species produce precocious offspring that have their eyes and ears open, teeth erupted, fur well developed, and can eat solid food in the first week of life. T. a. laurentius has larger litter sizes and lower body masses at birth and weaning than T. pachyurus. Moreover, females of T. a. laurentius reach puberty earlier and with lower body mass than T. pachyurus ...
No. They are from different orders. Otters are related to weasels and are carnivores and thus part of the order Carnivora. Beavers are actually rodents and are part of the order Rodentia. They are related to rats. ...
Buy or license direct from the photographer this stunning image of : Head Of Coypu Showing Orange Incisors And Long Whiskers Myocaster Coypus , Lake ...
All the families of rodents eat a wide range of foods. Most rodents are herbivorous, plant eaters, eating a wide range of plant materials, including seeds, stems, leaves, roots, and flowers. Many of these species eat primarily seeds. Some species, such as the grasshopper mouse, eat insects and spiders. Other species, such as the Australian water rat, are primarily carnivorous (meat-eating), preying (eating animals for food) on small fish, frogs, and mollusks. Many are to some degree omnivorous, eating both plants and animals. Still others have highly specialized meals, eating only a few species of invertebrates, animals without a backbone, or fungi.. ...
Iranian Jerboa - This cute little rodents survival depends on us by BoIss5 BoIss5 | This newsletter was created with Smore, an online tool for creating beautiful newsletters for for educators, nonprofits, businesses and more
TheInfoList.com - (Rodent) ANOMALUROMORPHA Anomaluromorpha CASTORIMORPHA Castorimorpha HYSTRICOMORPHA (inc. CAVIOMORPHA ) MYOMORPHA SCIUROMORPHA Combined range of all rodent species (not including introduced populations)RODENTS (from LATIN Latin rodere,
Theres a debate around here about which of our rodent friends this youngun is. There were at least ten of them strung out along about thirty feet of paved path in Prospect Park recently, most of them with their eyes still closed, some not moving, others scurrying regardless of their eyelids. I dont know what…
p>An evidence describes the source of an annotation, e.g. an experiment that has been published in the scientific literature, an orthologous protein, a record from another database, etc.,/p> ,p>,a href="/manual/evidences">More…,/a>,/p> ...
Heres one with sharpness reduced in the user menu. Roadside Rodentia on Vimeo Roadside Rodentia on Vimeo Still pretty darn sharp!
My project is similar in that it involves anthropomorphic talking animals. Sometimes this is very well done (as in Mouse Guard, Watership Down, Redwall or The Secret of Nimh - which is getting a remake by the way) and other times it is not so well done ...
(2014) Impellizeri et al. Veterinary and Comparative Oncology. The concept of vaccines based on the direct inoculation of plasmid DNA gained initial proof-of-concept in small rodent species. Further development was hampered by the difficulty to confirm immunog...
Depending on the species, cage size and number of animals, you will need to clean the cage and replace the litter about once a week. During the week, you should also clean out the toilet area several times. You must also clean the cage itself, together with accessories such as the food bowl, hay rack etc. on a regular basis. This is best done using warm water.. The cage also needs a thorough clean once every month: This involves giving the entire cage a good rinse out. Avoid using strong household detergents. If necessary, you can clean areas of heavy soiling using a hard brush and a little washing-up liquid or vinegar. Afterwards, rinse everything down well with fresh water and leave it to dry. You can then scatter around clean small animal litter and put your pets accessories back inside. Following this cleaning regime ensures that your pets cage remains clean and hygienic. ...
Following consultation with two expert reviewers, we have come to the decision of "Revise and Re-review" for your article. This decision was based on the enthusiasm we all have for the significance of the topic of study, but concerns over the Methods and Results as currently written. None of the revisions should require more than two months work. The specific comments of the reviewers are listed below:. Reviewer 1:. Major:. I take issue with description throughout as prefrontal cortex and the loose/interchangeable citation of primate and rodent literature. Rodents do not have a granular PFC. There is indeed controversy about homology (see Preuss, 1995; Wise, 2008) though OFC may be safer to make such claims as being within PFC. For example, connectivity-based inferences about OFC-striatum homology between primate and rodent are supported by recent literature (see Heilbronner et al. Biol Psychiatry 2016 and recent commentary by Izquierdo, 2017 in J Neurosci). Suggest referring to as frontal ...
Looking for Octodon degus? Find out information about Octodon degus. a mammal of the family Octodontidae of the order Rodentia. In outward appearance and measurements it resembles the brown rat. Its body is covered with... Explanation of Octodon degus
Long noncoding RNAs (lncRNAs) are a class of ubiquitous noncoding RNAs and have been found to act as tumor suppressors or oncogenes, which dramatically altered our understanding of cancer. Naked mole rat (NMR, Heterocephalus glaber) is an exceptionally long-lived and cancer-resistant rodent; however, whether lncRNAs play roles in cancer resistance in this seductive species remains unknown. In this study, we developed a pipeline and identified a total of 4422 lncRNAs across the NMR genome based on 12 published transcriptomes. Systematic analysis revealed that NMR lncRNAs share many common characteristics with other vertebrate species, such as tissue specificity and low expression. BLASTN against with 1057 human cancer-related lncRNAs showed that only 5 NMR lncRNAs displayed homology, demonstrating the low sequence conservation between NMR lncRNAs and human cancer-related lncRNAs. Further correlation analysis of lncRNAs and protein-coding genes indicated that a total of 1295 lncRNAs were intensively
Domain architecture and assignment details (superfamily, family, region, evalue) for HGL_H00000288221 from Heterocephalus glaber v1.7-2. Plus protein sequence and external database links.
Thirty-five juvenile (mean age 6.3 weeks) and 35 adult (mean age 2.0 years) healthy degus (Octodon degus) were studied to investigate selected haematological and plasma biochemistry parameters. Animals were anaesthetised with isoflurane, and blood was withdrawn from the cranial vena cava. Erythrocyte, haematocrit and neutrophil counts (including the percentage of neutrophils) were significantly higher in the adult degus than in the juveniles. In contrast, the reticulocyte count, mean corpuscular volume, mean corpuscular haemoglobin, number of platelets and percentage of lymphocytes were significantly lower in the adult animals. Total protein and globulin levels were significantly higher in the adult degus. The albumin:globulin ratio and plasma levels of urea nitrogen, cholesterol, alanine aminotransferase, aspartate aminotransferase, alkaline phosphatase, potassium, total calcium and inorganic phosphorus were significantly lower in adults than in juveniles.. ...
The modern definition of Hystricomorpha, also known as Entodacrya or Ctenohystrica, is a taxonomic hypothesis uniting the gundis with the hystricognath rodents.[3] Considerable morphological and strong molecular support exists for this relationship . If true, this hypothesis renders the traditional view of Sciurognathi invalid, as it becomes a paraphyletic group. The hystricomorph rodents, or at least members of Caviomorpha, are sometimes not regarded as rodents.[4] Most molecular and genetic research, however, confirms the monophyly of rodents.[5] Support for rodent polyphyly appears to be a product of long branch attraction.[6]. Hystricomorph rodents appeared in South America in the Eocene,[7] a continent which previously had metatherians, xenarthrans, and meridiungulates as the only resident nonflying mammals. They apparently arrived by rafting across the Atlantic from Africa. The same type of migration may have occurred with primates,[8] which also appeared in South America in the Eocene ...
p>The checksum is a form of redundancy check that is calculated from the sequence. It is useful for tracking sequence updates.,/p> ,p>It should be noted that while, in theory, two different sequences could have the same checksum value, the likelihood that this would happen is extremely low.,/p> ,p>However UniProtKB may contain entries with identical sequences in case of multiple genes (paralogs).,/p> ,p>The checksum is computed as the sequence 64-bit Cyclic Redundancy Check value (CRC64) using the generator polynomial: x,sup>64,/sup> + x,sup>4,/sup> + x,sup>3,/sup> + x + 1. The algorithm is described in the ISO 3309 standard. ,/p> ,p class="publication">Press W.H., Flannery B.P., Teukolsky S.A. and Vetterling W.T.,br /> ,strong>Cyclic redundancy and other checksums,/strong>,br /> ,a href="http://www.nrbook.com/b/bookcpdf.php">Numerical recipes in C 2nd ed., pp896-902, Cambridge University Press (1993),/a>),/p> Checksum:i ...
Our health and human services solutions are designed to make a meaningful impact on peoples lives and strengthen communities through state, federal and local government partnerships. We collaborate with government agencies to develop cost-effective health and human service programs tailored to their communities unique needs. At the same time, we offer governments the ability to implement programs rapidly with scalable operations and automated systems. From Medicaid and Medicare to the Childrens Health Insurance Program (CHIP) and welfare-to-work, our comprehensive solutions help governments run effectively and efficiently to achieve their programmatic goals. ...
In the United States and Canada, the epidemiology is more complex and involves a number of different rodent hosts and flea vectors, as well as domestic animals. Most commonly, the infection is acquired by human exposure to infected tissues or from the bites of fleas of wild rodents such as prairie dogs, ground squirrels, chipmunks, rabbits, and other wild rodent species. Contact with squirrels accounts for nearly half of the exposures. Domestic animals, especially cats, may become infected after contact with wildlife and may transmit the infection to humans.2 Prior to 1977, no cat-related cases had occurred, but since that time 18 cases have been reported, with 28% of the cases causing direct pneumonic plague. Therefore, direct contact with wild animals or their fleas is not required for plague transmission. With the exception of cats, most other carnivores, including dogs, are relatively resistant to plague and therefore are rarely involved in plague transmission. ...
Books by Wilfred Hudson Osgood, The white-tailed deer, The mammals of Chile, Mammals of the Collins-Day South American expedition, A peculiar bear from Alaska, The long-clawed South American rodents of the genus Notiomys, Catalogue of the Edward E. Ayer Ornithological Library, Natural History of the Queen Charlotte Islands, British Columbia Natural History of the Cook Inlet Region, Alaska (North American Fauna, No 21), Game birds from northwestern Venezuela
Definition of Octodon - A genus of rat-like rodents (the degus) of the family Octodontidae, native to the Andes and western coastal areas of South America
Deprived of oxygen, naked mole-rats can survive by metabolizing fructose just as plants do, researchers report this week in the journal Science -- a finding that could lead to treatments for heart attacks and strokes.
We report two new localities for the rodent species Wiedomys cerradensis Gonçalves, Almeida and Bonvicino, 2005, previously known only from its type locality, in southwestern Bahia state, and one neighbor locality. Three new specimens were collected along the Paranã River Valley, in the Goiás and Tocantins states, central Brazil. These records extend the range of this species to the northwest, approximately 190 km. We provide external and cranial measurements of these specimens and comment on their morphology.
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Comprising over 1400 species worldwide, rodents are the largest taxonomic group of mammals (Nowak 1999). Rodent use of habitats is extensive and varied. Most rodent species are relatively small, secretive, prolific, adaptable, and have continuously growing incisors which require constant eroding by gnawing. Rodents are known for their high reproductive potential; however, there is much variability between species as to the age at first reproduction, size of litters, and the number of litters per year. All rodent species have ecological, scientific, social, and/or economic values. They recycle nutrients, aerate soils, distribute seeds and spores, and affect plant succession. Some provide meat and furs for people. Several species are used in large numbers in medical research. Additionally, they provide an important prey base for many species of predatory animals.
My research investigates the neural basis of learning and memory through the examination of different rodent models of cognitive impairment. Trisomy of chromosome 21 is known to cause Downs syndrome, a genetic condition characterized by intellectual disabilities. Located on chromosome 21 is also the gene encoding the amyloid precursor protein (APP), which is crucial in Alzheimers disease, a neurodegenerative disorder mainly characterized by memory impairments. Individuals with Downs syndrome show in fact increased risk of developing Alzheimers disease. Hence, genes on chromosome 21 play a fundamental role in learning and memory. Genetically modified mouse models triplicating different selected genes of chromosome 21 have been developed and I will characterise the behavioural phenotypes of such mouse strains (Dp1Tyb, Ts2yey, Ts3yey). By comparing their cognitive deficits and by assessing as well as manipulating brain activity, I aim to relate specific genes to the functioning of specific ...
Discover Lifes page about the biology, natural history, ecology, identification and distribution of Lasioglossum nigripes, female image
The naked mole-rat is known to be cold-blooded and resistant to cancer, but scientists now believe it can also survive without oxygen.
Among any and all creatures in this world that could be considered living, including people, there is an universal truth: We die. But not all of us go through the gradual (and eventually rapid) process of self-destruction that we think of as aging. Some animals and plants, like species of jellyfish, tortoises, and trees, seem to have a sort of biological immortality. A recent study published in eLife provides more evidence theres at least one more animal we should add to that list: the naked mole-rat.