Fish with whole chromosome and telomeric probes demonstrates huge karyotypic reorganization with its between two species of oryzomyini sigmodontinae, rodentia. Use of habitats by nonvolant small mammals in cerrado in. The neacomys genus is predominantly found in the amazon region, and belongs to the most diverse tribe of the sigmodontinae subfamily rodentia, cricetidae, oryzomyini. You must there are over 200,000 words in our free online dictionary, but you are looking for one thats only in the merriamwebster unabridged dictionary.
The karyotype of oryzomys capito laticeps cricetidae, rodentia from central brazil article pdf available in brazilian journal of genetics 154. The neacomys genus rodentia, sigmodontinae is distributed in the amazon region, with some species limited to a single endemic area, while others may occur more widely. A checklist of the family trombiculidae and leeuwenhoekiidae is presented, containing 63 species in 30 genera of chiggers from 80 different hosts and 146 localities in brazil. The heads of hylaeamys megacephalus sperm were pyriform and the tail centrally inserted, while those of s.
The systematics of this genus and questions about its diversity and range have been investigated by morphological, molecular cytb and coi sequences and karyotype analysis classic. Specimens of hylaeamys megacephalus and oecomys aff. Whole chromosome probes from hylaeamys megacephalus were. Diceleraas diagrams and multivariate size free principal component analysis approaches, along with qualitative analysis, as well. Hylaeamys megacephalus errata version published in 2017. Mycoplasma detected in sylvatic rodents suggests the circulation of novel species. Hylaeamys yunganus, also known as the amazonian oryzomys or yungas rice rat, is a species of rodent in the genus hylaeamys of family cricetidae.
Eryops is one of the better represented predators of the early permian era. Encephalous definition of encephalous by the free dictionary. Here, we examine the chromosomal signatures of the akodontini tribe by using hylaeamys megacephalus hme probes to study the karyotypes of oxymycterus. Descriptive morphometry and stereology of the tubular. We used morphometric analyses performed in univariate diceleraas diagrams and multivariate size free principal component analysis approaches, along with qualitative analysis, as well as information on the karyology, to make an.
Dinosaur corporation is the worlds leading supplier of fossil replicas, cast in durable polyurethane resins. Its large skull had thick and uneven bones, with wrinkles. The number of species within the genus and their geographical boundaries are not known accurately, due to their high genetic diversity and difficulties in taxonomic identification. Hylaeamys species hylaeamys megacephalus name synonyms. In 1984, benshoof and colleagues reported the first record of oryzomys bombycinus from honduras. The species hylaeamys megacephalus hme oryzomyini, 2n 54, necromys lasiurusnla akodontini, 2n 34 and akodon sp. Baphetes planiceps owen 1854, watson 1929 beaumont 1977 nests betweeen acanthostega and temnospondyli. Contrasting the realized and fundamental niche of the arboreal walking performance of neotropical rodents. Clues on syntenic relationship among some species of oryzomyini and akodontini tribes rodentia. Megacephalus definition of megacephalus by medical dictionary. Semideciduous atlantic forest mammals and the role of the. It had a particularly stocky build which was supported by a particularly strong spine so that it would not suffocate under its own bulk.
There is a record from the orinoco delta of northeastern venezuela, well within the range of hylaeamys megacephalus, but musser and colleagues suggest that this is based on mislabeled specimens. Fulltext is provided in portable document format pdf. To view articles you must have the free adobe acrobat reader. Hylaeamys megacephalus is a terrestrial and generalist species with high habitat tolerance emmons and feer 1997. In the neotropical region the genus quadraseta brennan, 1970, includes 14 species, with ectoparasitic habits during the larval stage. The comparative chromosome painting analysis of the seven karyotypes of the six species of neacomys shows that their diversity is due to 17 fusionfission events and one translocation, pericentric inversions in four syntenic blocks, and constitutive heterochromatin ch amplificationdeletion of six syntenic autosomal blocks plus the x chromosome. Quadraseta brasiliensis goff and gettinger, 1989, was described from larvae collected on the rodent hylaeamys megacephalus fisher, cited as oryzomys capito olfers. Oct 10, 2019 the neacomys genus is predominantly found in the amazon region, and belongs to the most diverse tribe of the sigmodontinae subfamily rodentia, cricetidae, oryzomyini. Pdf the genus hylaeamys weksler, percequillo, and voss. Abc 2000 today was abc news coverage of new years eve celebrations around the world from december 31, 1999, into january 1, 2000, as part of the 2000 today programming in the united states.
Asp akodontini, 2n 10 have extreme diploid numbers that make it difficult to understand the rearrangements that are responsible for such differences. It is found in lowland tropical rainforest throughout amazonia, in northeastern bolivia, eastern peru, eastern ecuador, southeastern colombia, southern venezuela, guyana, suriname, french guiana, and northern brazil. Megacephalus article about megacephalus by the free. We used morphometric analyses performed in univariate diceleraas diagrams and multivariate size free principal component analysis approaches, along with qualitative analysis, as well as information on the karyology, to make an assessment on the status of populations of the. Hosted by the usgs core science analytics and synthesis.
Pdf the genus hylaeamys weksler, percequillo, and voss 2006. Hylaeamys megacephalus, also known as azaras broadheaded oryzomys or the. Hylaeamys megacephalus hylaeamys oniscus hylaeamys perenensis hylaeamys tatei hylaeamys yunganus. Pdf seven species are included in the genus hylaeamys. It is solitary, nocturnal and terrestrial, and has a varied diet. It is found mainly in lowland tropical rainforest from its type locality in paraguay north through central brazil, french guiana, guyana, suriname, and venezuela onto trinidad and tobago.
The genus hylaeamys weksler, percequillo, and voss 2006 bioone. Eryops, genus of extinct primitive amphibians found as fossils in permian rocks in north america the permian period occurred from 299 million to 251 million years ago. It is nocturnal and terrestrial, and has a varied diet. Hylaeamys acritus, formerly oryzomys acritus, is an oryzomyine rodent of the family cricetidae. Megacephaly definition of megacephaly by the free dictionary. Hylaeamys megacephalus in mammal species of the world.
The type locality and depository are provided, including new locality and host. Dec 05, 2018 the remaining oryzomini had sperm cells with hooked heads. The genus hylaeamys weksler, percequillo, and voss 2006. Hylaeamys is a genus of south american oryzomyine rodents found principally in humid forested areas east of the andes. Hylaeamys oniscus exhibits a longer and more robust skull, with a. Euryoryzomys macconnelli, hylaeamys megacephalus and rhipidomys nitela and eumysopinae e. Eryops skull for sale fossil replica dinosaur corporation. Hylaeamys is a genus of south american oryzomyine rodents found principally in humid. Extensive chromosomal reorganization in the evolution of new world muroid rodents cricetidae, sigmodontinae. Their limits and distribution, however, are uncertain. The gallery forest cluster grouped the same set of species that had previously been assigned to gallery forest neacomys spinosus, hylaeamys megacephalus, nectomys squamipes, oecomys bicolor, proechimys longicaudatus, and caluromys philander, confirming the earlier analysis. Pdf fish with whole chromosome and telomeric probes. While every effort has been made to provide the most reliable and uptodate information available, ultimate legal requirements with respect to species are contained in. American museum of natural history unionpedia, the concept map.
The orbit was elongated and divided into an anteroventral angled portion and posterodorsal rounded portion. Hylaeamys megacephalus, also known as azaras broadheaded oryzomys or the largeheaded rice rat, is a species of rodent in the genus hylaeamys of family cricetidae, of which it is the type species. Files are available under licenses specified on their description page. The rodents were maintained in the lab with food and water, free from stress. The remaining oryzomini had sperm cells with hooked heads. Eryops was a massive animal more than 2 m 6 feet long. Pdf in order to achieve a monophyletic classification of oryzomyine rodents. Page designed through the cooperative efforts of interagency itis teams. Here, we examine the chromosomal signatures of the akodontini tribe by using hylaeamys megacephalus hme probes to study the karyotypes of oxymycterus amazonicus 2n 54, fn 64 and blarinomys breviceps 2n 28, fn 50, and compare these data with those from other taxa investigated using the same set of probes. Hylaeamys megacephalus wikipedia, a enciclopedia livre. Free fulltext pdf articles from hundreds of disciplines, all in one place oecomys catherinae sigmodontinae, cricetidae. New american museum of natural history and abc 2000 today see. We used morphometric analyses performed in univariate diceleraas diagrams and multivariate size free principal component analysis approaches, along with qualitative analysis, as well as information on the karyology, to make an assessment on the status of populations. Contrasting the realized and fundamental niche of the.
We used five animals in the study, captured in forest fragments in southwestern goias state, between april and august 2009. Eryops megacephalus wikispecies, free species directory. Eryops was a common, primitive amphibian that lived in swamps, primarily during the earlier permian. This page was last edited on 18 december 2019, at 17. A contribution to the knowledge of quadraseta brasiliensis. Hylaeamys megacephalus occurs further to the east in the eastern portion of the coastal range, separated by the coastal eastern caribbean dry zone. Pdf ten new genera of oryzomyine rodents cricetidae. Vieira, contrasting the realized and fundamental niche of the arboreal walking performance of neotropical rodents. A checklist of chiggers from brazil, including new records. All 24 whole chromosome probes of hylaeamys megacephalus 18. The species in this genus have historically been placed in oryzomys. Hylaeamys megacephalus least concern vernacular names. Chromosomal phylogeny and comparative chromosome painting.
A read is counted each time someone views a publication summary such as the title, abstract, and list of authors, clicks on a figure, or views or downloads the fulltext. Gbanding with homologies revealed by hylaeamys megacephalus hme probes 11. They are most closely related to euryoryzomys, transandinomys, nephelomys, oecomys, and handleyomys, and most closely resemble species of the former two genera. We used morphometric analyses performed in univariate diceleraas diagrams and multivariate size free principal component analysis approaches, along with qualitative analysis, as well as information on the karyology, to make an assessment on the status of populations of the genus in. Ijms free fulltext chromosomal signatures corroborate. Hylaeamys perenensis, formerly oryzomys perenensis, also known as the western amazonian oryzomys, is an. Seasonal flooding regime and ecological traits influence. Nephelomys caracolus, also known as the costa central oryzomys or caracol rice rat, is a species of rodent in the genus nephelomys of family cricetidae.
Hylaeamys megacephalus wikispecies, free species directory. It was a fierce carnivor with stout body and spine, wide ribs, short, strong legs and tail, and a wide, elongated skull with many sharp teeth in strong jaws. Bolivia, brasil, colombia, equador, guiana francesa, guiana, paraguai, peru, suriname, trinidad e tobago e venezuela. Mammal species of the world a taxonomic and geographic reference. Hylaeamys megacephalus is a component of the gallery forest community of the cerrado province in central brazil mares et al. In order to extend our knowledge of the homeological relationships between akodontini and oryzomyini species, we analyzed the species akodon montensis 2n 24 and thaptomys nigrita 2n 52 both from the tribe akodontini, with chromosome probes of hylaeamys megacephalus 2n 54 of the tribe oryzomyini. All structured data from the file and property namespaces is available under the creative commons cc0 license. This species undergoes a change of colour as it ages, being black when juvenile, grey when subadult and brown when adult. Dec 20, 2012 near the location of the present study, in an area of forest reserves minimum critical size of ecosystems reserves, small rodents of some subfamilies, such as sigmodontinae e.
Your use of this pdf, the bioone web site, and all posted and associated content indicates your acceptance. Hylaeamys laticeps, the name formerly used for this entity, was allocated to the synonymy of h. Chromosomal diversity and molecular divergence among three. American museum of natural history and aayemenaytcheia see more abc 2000 today. Ijms free fulltext chromosomal signatures corroborate the. A new species of cerradomys from central brazil, with remarks on the taxonomy of the genus 527 zoologia 31 6. Diceleraas diagrams and multivariate size free principal component analysis approaches, along with. However, it is not a legal authority for statutory or regulatory purposes. The araguaia river is an anabranching river consisting of multiple.
Information on reproductive characteristics of wild rodents is scarce in the literature. This study aimed to assess the testis morphometry and stereology of hylaeamys megacephalus. Morphological description and comparison of sperm from. Diversity and molecular characterization of novel hemoplasmas. It is found mainly in lowland tropical rainforest from its type locality in paraguay north through central brazil, french guiana, guyana, suriname, and venezuela onto trinidad and. Clues on syntenic relationship among some species of. Although codistributed species are affected by the same abiotic factors, such as rivers and seasonal flooding regimes, ecological traits, such as locomotion habits and habitat preferences, may also influence differences in levels of genetic diversity and differentiation. Extensive chromosomal reorganization in the evolution of.
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