Allelic expression preference and coefficient of variation in interspecies f 1. Xiphophorus couchianus girard, 1859 old web site critically endangered pages in category xiphophorus couchianus this category contains only the following page. Xiphophorus kallmani is not evaluated by the international union for the conservation of nature in the iucn red list of threatened species. Gene expression variation and parental allele inheritance. Ginklasipika han iucn an species komo nangangaratan duro. The xiphophorus genetic stock center manual office of the. Xiphophorus alvarezi is a livebearing poecilid found along the atlantic slope in southern mexico and guatemala. The worlds most trusted source of information about the fascinating world of fishkeeping jump to site navigation. Postlethwait5, manfred schartl6, patrick minx7, wesley c. The three species of xiphophorus that are known from the rio grande drainage in mexico and are the most northern of the genus are meyeri, gordoni, and couchianus.
Pdf abstract the genus xiphophorus has great potential to contribute to the. The genetic basis of spontaneous melanoma formation in spotted dorsal sd xiphophorus platyfishswordtail hybrids has been studied for decades, and is adequately explained by a twogene inheritance model involving a sexlinked oncogene, xmrk, and an autosomal tumor suppressor, diff. Myron gordon established the xiphophorus genetic stock center xgsc at the american museum of natural history. Here you will find the archives containing past features, fish of the month, and marine inverts of the month. Sperm cryopreservation in livebearing xiphophorus fishes ncbi. In 1992, due to the retirement of its past director dr. An xiphophorus couchianus in uska species han actinopterygii nga syahan ginhulagway ni girard hadton 1859. Mar 12, 20 phylogenomics reveals extensive reticulate evolution in xiphophorus. Xiphophorus couchianus monterrey platy fish can be kept in community aquariums with other fishes with equal demands. The monterrey platyfish xiphophorus couchianus is a species of freshwater fish in family poecilidae. Xiphophorus definition of xiphophorus by the free dictionary. Request pdf sperm cryopreservation of a livebearing fish, the platyfish xiphophorus couchianus the objectives of this study were to evaluate the effects of cryoprotectant, osmotic pressure. Cortisol is a glucocorticoid that regulates physiological changes during a stress response barton, 2002. Xiphophorus definition of xiphophorus by merriamwebster.
Xiphophorus specimens collected by m, gordon from huasteca have also been considered to be x. The xgsc is one of the oldest scientific resource centers in america. Average telomere lengths were determined to be between 2 to. Comprehensive phylogenetic analysis of all species of swordtails and platies pisces. An xiphophorus maculatus in uska species han actinopterygii nga syahan ginhulagway ni gunther hadton 1866. Like most other new world poeciliids, platies and swordtails are livebearers. Offspring production with cryopreserved sperm from a live. Two new species of xiphophorus poeciliidae from the. Klaus kallman, the xgsc moved to texas state university. The common name for this fish is the chiapas sword which makes sense since chiapas is smack dab in the middle of the range of this fish.
Shiryev4, richa agarwala4, jeannicolas volff3, john h. They feed on worms, crustaceans, insects and plant matter ref. Stress is an adaptive physiological response to unexpected or excessive environmental demand, otherwise known as stressors sorensen et al. In this study, the goal was to establish protocols for sperm cryopreservation and artificial insemination to produce live young in x. This page was last edited on 17 november 2016, at 08. Xiphophorus species are regularly used in genetic studies, and scientists have developed many interspecific hybrids, especially in melanoma research since the 1920s. Ultraviolet a does not induce melanomas in a xiphophorus. On the basis of the initial uvr melanoma induction results using the spcouchianus model, we performed an approximate power calculation for a twosample comparison assuming a background value of 1520% and a 2 to 3fold increase in melanoma after. The stars are the locations where fishes were collected and the red stars are the location of.
Results uvb but not uva induced melanomas in the spcouchianus backcross hybrid model. North and central america, rio nantla, veracruz in mexico to. The chicago livebearer society is pleased to announce a donation to. You should contact the seller to resolve any questions before bidding. You must there are over 200,000 words in our free online. The monterrey platyfish xiphophorus couchianus is a species of freshwater fish in family. All structured data from the file and property namespaces is available under the creative commons cc0 license. Xiphophorus is a genus of euryhaline and freshwater fishes in the family poeciliidae of order cyprinodontiformes, native to mexico and northern central america. Cortisol release in response to uvb exposure in xiphophorus fish. In the primary response to chemical, physical or perceived stressors, cortisol synthesis increases in. Xiphophorus at national center for biotechnology information. Xiphophorus definition is a genus of topminnows family poeciliidae comprising the swordtails.
Embryonic development of the platyfish platypoecilus, the. Xiphophorus couchianus was first described in 1859 from monterrey and cadereyta by cli. In animal models where tumorigenesis is initiated by clearly defined genetic events, it is possible to study the genes and their functions that make a normal cell become a fully malignant cancer cell. The xiphophorus genetic stock center, founded by myron gordon in 1939, is an important source of these fish for research. Nov 02, 2014 the chicago livebearer society is pleased to announce a donation to. The specific name refers to the american soldier and naturalist darius n. We present sequencing, assembly and annotation of two new genomes representing xiphophorus couchianus and xiphophorus hellerii. Lu y, bowswell m, bowswell w, yang k, schartl m, et al.
Xiphophorus on integrated taxonomic information system. Especially the red varieties are very popular aquarium fishes ref. Adults are found mainly in rapidly flowing streams and rivers, preferring heavily vegetated habitats ref. The genus xiphophorus is composed of 26 described members of platyfish and swordtails. Hailing from mexico, it is fair to say that this little livebearers perennial popularity and soughtafter status is definitely not due to its flashy appearance. Approximate geographical distributions of three xiphophorus species. One little livebearer that has done much to raise awareness of the need to catalog and conserve endangered fishes is the monterrey platy xiphophorus couchianus. Sperm cryopreservation protocols have been developed for livebearers such as the green swordtail xiphophorus helleri and the platyfish xiphophorus couchianus. Maletomale variation in postthaw motility and production of f 1 hybrid offspring. Sperm cryopreservation in livebearing xiphophorus fishes. This page was last edited on 22 february 2011, at 20. Thus far, live young have been produced with cryopreserved sperm only in one species xiphophorus helleri.
The xmrk oncogene encodes a receptor tyrosine kinase related to egfr. They occur in warm springs and their effluents, weedy canals and ponds ref. Overall, cortisol release rates for males and females after uvb exposure showed. In the fish xiphophorus, melanoma can be initiated by. Sperm cryopreservation in these livebearing fishes has begun recently. Text is available under the creative commons attributionsharealike license.
We would like to thank everyone who supplied fish or purchased fish at our rare livebearer auction on sunday, october 6th. The many xiphophorus species are all called either platyfish or platies or swordtails. Page designed through the cooperative efforts of interagency itis teams. Fishes of the genus xiphophorus are wellstudied biomedical research models, and some species, such as x. Seller assumes all responsibility for listing this item. Sperm cryopreservation of a livebearing fish, the platyfish. Files are available under licenses specified on their description page. This page was last edited on 30 october 2019, at 07. An xiphophorus couchianus in nahilalakip ha genus nga xiphophorus, ngan familia nga poeciliidae. Xiphophorus species have weak postzygotic isolation morizot et al.
Xiphophorus couchianus monterrey platy fish should be kept in an aquarium that is densely planted among the sides and back. Xiphophorus synonyms, xiphophorus pronunciation, xiphophorus translation, english dictionary definition of xiphophorus. May 18, 2010 in 1993, setlow used a different xiphophorus interspecies cross designated as sp couchianus. Pronunciation of xiphophorus with 1 audio pronunciation, 2 translations and more for xiphophorus. Preserving xiphophorus couchianus in the home aquarium, part.
The xiphophorus genetic stock center has operated within the united states since the 1930s making it one of the oldest live animal resource centers worldwide. 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. The traditional strength of the xiphophorus experimental model involves the nonbiased assessment of. The monterrey platyfish xiphophorus couchianus is a species of freshwater fish in the family poecilidae. In the arroyo chapultepec natural hybrids between x. The worlds most trusted source of information about the fascinating world of fishkeeping. Xiphophorus couchianus wikispecies, free species directory. Xiphophorus gordoni tiene una aleta dorsal conformada por 10 a 12 radios, generalmente 11. Cyprinodontiformes rivulines, killifishes and live bearers class. The lengths of telomeres in six organs gill, liver, eye, brain, testis, ovary of three species of xiphophorus x.
Because of the large a priori partition numbers we did not allow free model. Cryopreservation of sperm from xiphophorus fishes has produced live young in three species. To view articles you must have the free adobe acrobat reader. Xiphophorus clemenciae general introduction 66 xiphophorus clemenciae, fincaii 67 xiphophorus clemenciae, grande 68 xiphophorus continens 69 xiphophorus cortezi 70 xiphophorus couchianus 73 xiphophorus evelynae 74 xiphophorus gordoni 76 xiphophorus meyeri, muzquiz platyfish 78 xiphophorus milleri 80 xiphophorus mixei, sol 82 xiphophorus. Though xiphophorus fishes are among the best studied vertebrates genetically, largely because of availability of well characterized genetic stocks, maintenance of large numbers of genetic stocks requires constant effort and substantial funding. Texas state university is providing excellent facilities and support for the stock center, but. Mbuna marcus aquariums, cichlids and more 3,597 views.
Xiphophorus is a genus of euryhaline and freshwater fishes in the family poeciliidae of order. A cdkn2like polymorphism in xiphophorus lg v is associated. Sperm cryopreservation of a livebearing fish, xiphophorus. An xiphophorus maculatus in nahilalakip ha genus nga xiphophorus, ngan familia nga poeciliidae. They have been in the tropical fish hobby for as long as it has existed. In human tumor biopsies it is almost impossible to pinpoint the particular molecular abnormalities that determine neoplasia. It has continually provided scientists with pedigreed and inbred strains of livebearing platyfishes and swordtails of the genus xiphophorus for over 80. American currents annotated checklist of north american. Sperm cryopreservation of a livebearing fish xiphophorus couchianus. Actinopterygii rayfinned fishes cyprinodontiformes rivulines, killifishes and live bearers poeciliidae poeciliids poeciliinae etymology.
Embryonic development of the platyfish platypoecilus. Cortisol released due to experimental handling and uvb radiation in xiphophorus species honors thesis presented to the honors committee of texas state universitysan marcos in partial fulfillment of the requirements for graduation in the honors college by adam contreras san marcos, texas may 20. A new species of the genus xiphophorus h eckel endemic to. However, it is not a legal authority for statutory or regulatory purposes. Xiphophorus at the catalogue of life xiphophorus at encyclopedia of life. A taxonomic genus within the family poeciliidae platyfish and swordtails.
Fulltext is provided in portable document format pdf. The xmrk oncogene encodes a receptor tyrosine kinase. Fish of the genus xiphophorus are commonly referred to as the platies and swordtails. Gene expression variation and parental allele inheritance in. Search through tropical fish hobbyist magazines archive of available articles online. Pmc free article yang h, norris m, winn r, tiersch tr.
Preserving xiphophorus couchianus in the home aquarium. Genus xiphophorus uncovers a hybrid origin of a swordtail fish, xiphophorus monticolus, and demonstrates that the sexually selected sword originated in the ancestral lineage of the genus, but was lost. Hosted by the usgs core science analytics and synthesis. Xiphophorus couchianus gordoni miller y mincley, 1963. Itis taxonomy is based on the latest scientific consensus available, and is provided as a general reference source for interested parties. Here, we present results from investigations of stress response during an experimental treatment and uvb exposure in xiphophorus maculatus jp 163 b, xiphophorus couchianus, and f 1 interspecies hybrids produced from the mating x. Characterization of telomeres and telomerase expression in. The rates of single nucleotide change range from 1 per 52 bp to 1 per 69 bp among.