04454nas a2200169 4500008004100000245018200041210007300223260010500296300000900401520356200410653001803972653003003990653002804020653003504048100003704083856016404120 2015 eng d00aModelación y Caracterización Ambiental del Área de Distribución Potencial de Oncorhynchus chrysogaster (Needham y Gard, 1964) en las Cuencas de los Ríos Sinaloa y Culiacán0 aModelación y Caracterización Ambiental del Área de Distribución  aMazatlán, Sinaloa, MéxicobCentro de Investigación en Alimentación y Desarrollo, A.C.c2015/01// a1-743 aRegarding the Mexican golden trout Oncorhynchus chrysogaster, salmonid nativeto Mexico which distribution has been restricted to river basins Fuerte, Sinaloa, Culiacan in the Sierra Madre Occidental (SMO). However, this study focused on modeling the potential distribution of this species in the basins of Sinaloa and Culiacán rivers, bounded at altitudes ≥ 1500 m, being little studied in relation to the distribution of this species. There are few historical records of the species, extending to the present study with 11 new records obtained in four samples taken during the investigation. The environmental information required for the modeling process comes from the bioclimatic variables WorldClim and Compound Topographic Index HYDRO1k project. Based on this information and the records of the species, the potential distribution of the species with BIOCLIM, GARP and MAXENT methods that relate common occurrence data (geographical location) of one species with the set of environmental variables was modeled. The three models agree in locating distribution sites above 1500 m, which is considered as altitudinal limit, however there are differences in the extent and final distribution area, having higher affinity to the results obtained with GARP and MAXENT, compared with results generated with BIOCLIM. To assess the predictive ability of different modeling methods mentioned before a statistical method known as Jackknife resampling, which is appropriate when you have fewer than 25 records of occurrence was applied. The model validation GARP places as the method has a higher predictive success, followed by MAXENT. Con relación a la trucha dorada mexicana Oncorhynchus chrysogaster, salmónido nativo de México cuya distribución se ha restringido a las cuencas de los ríos Fuerte, Sinaloa y Culiacán, en la Sierra Madre Occidental (SMO). A pesar de ello, el presente estudio se centró en el modelado de la distribución potencial de esta especie en las cuencas de los ríos Sinaloa y Culiacán, acotadas a altitudes ≥ 1500 msnm, por estar escasamente estudiadas con relación a la distribución de esta especie. Dentro de esta área se cuenta con pocos registros históricos de presencia de la especie, ampliándose con el presente estudio con 11 registros nuevos obtenidos en cuatro muestreos realizadas durante la investigación. La información ambiental requerida para el proceso de modelado procede de las variables bioclimáticas de WorldClim y el Índice Compuesto Topográfico del proyecto HYDRO1k. Con base en dicha información y con los registros de la especie, se modeló la distribución potencial de la especie con los métodos BIOCLIM, GARP y MAXENT, que en común relacionan datos de presencia (posición geográfica) de una especie con el conjunto de variables ambientales. Los tres modelos coinciden en ubicar los sitios de distribución por arriba de los 1500 msnm, que se ha considerado como límite altitudinal, sin embargo existen diferencias en cuanto a la extensión y área de distribución final, existiendo mayor afinidad en los resultados obtenidos con GARP y MAXENT, comparativamente con los resultados generados con BIOCLIM. Para evaluar la capacidad predictiva de los diferentes métodos de modelación mencionados anteriormente se aplicó un método estadístico de remuestreo conocido como Jackknife, el cual es apropiado cuando se tiene menos de 25 registros de ocurrencia. La validación de los modelos coloca a GARP como el método que presenta un mayor éxito predictivo, seguido por MAXENT. 10aMexican trout10aOncorhynchus chrysogaster10aSierra Madre Occidental10aspecies distribution modelling1 aRamírez-Huerta, Alejandro, Luis uhttps://truchasmexicanas.myspecies.info/content/modelaci%C3%B3n-y-caracterizaci%C3%B3n-ambiental-del-%C3%A1rea-de-distribuci%C3%B3n-potencial-de-oncorhynchus-004452nas a2200169 4500008004100000245018200041210007300223260010500296300000900401520356200410653001803972653003003990653002804020653003504048100003704083856016204120 2015 eng d00aModelación y Caracterización Ambiental del Área de Distribución Potencial de Oncorhynchus chrysogaster (Needham y Gard, 1964) en las Cuencas de los Ríos Sinaloa y Culiacán0 aModelación y Caracterización Ambiental del Área de Distribución  aMazatlán, Sinaloa, MéxicobCentro de Investigación en Alimentación y Desarrollo, A.C.c2015/01// a1-743 aRegarding the Mexican golden trout Oncorhynchus chrysogaster, salmonid nativeto Mexico which distribution has been restricted to river basins Fuerte, Sinaloa, Culiacan in the Sierra Madre Occidental (SMO). However, this study focused on modeling the potential distribution of this species in the basins of Sinaloa and Culiacán rivers, bounded at altitudes ≥ 1500 m, being little studied in relation to the distribution of this species. There are few historical records of the species, extending to the present study with 11 new records obtained in four samples taken during the investigation. The environmental information required for the modeling process comes from the bioclimatic variables WorldClim and Compound Topographic Index HYDRO1k project. Based on this information and the records of the species, the potential distribution of the species with BIOCLIM, GARP and MAXENT methods that relate common occurrence data (geographical location) of one species with the set of environmental variables was modeled. The three models agree in locating distribution sites above 1500 m, which is considered as altitudinal limit, however there are differences in the extent and final distribution area, having higher affinity to the results obtained with GARP and MAXENT, compared with results generated with BIOCLIM. To assess the predictive ability of different modeling methods mentioned before a statistical method known as Jackknife resampling, which is appropriate when you have fewer than 25 records of occurrence was applied. The model validation GARP places as the method has a higher predictive success, followed by MAXENT. Con relación a la trucha dorada mexicana Oncorhynchus chrysogaster, salmónido nativo de México cuya distribución se ha restringido a las cuencas de los ríos Fuerte, Sinaloa y Culiacán, en la Sierra Madre Occidental (SMO). A pesar de ello, el presente estudio se centró en el modelado de la distribución potencial de esta especie en las cuencas de los ríos Sinaloa y Culiacán, acotadas a altitudes ≥ 1500 msnm, por estar escasamente estudiadas con relación a la distribución de esta especie. Dentro de esta área se cuenta con pocos registros históricos de presencia de la especie, ampliándose con el presente estudio con 11 registros nuevos obtenidos en cuatro muestreos realizadas durante la investigación. La información ambiental requerida para el proceso de modelado procede de las variables bioclimáticas de WorldClim y el Índice Compuesto Topográfico del proyecto HYDRO1k. Con base en dicha información y con los registros de la especie, se modeló la distribución potencial de la especie con los métodos BIOCLIM, GARP y MAXENT, que en común relacionan datos de presencia (posición geográfica) de una especie con el conjunto de variables ambientales. Los tres modelos coinciden en ubicar los sitios de distribución por arriba de los 1500 msnm, que se ha considerado como límite altitudinal, sin embargo existen diferencias en cuanto a la extensión y área de distribución final, existiendo mayor afinidad en los resultados obtenidos con GARP y MAXENT, comparativamente con los resultados generados con BIOCLIM. Para evaluar la capacidad predictiva de los diferentes métodos de modelación mencionados anteriormente se aplicó un método estadístico de remuestreo conocido como Jackknife, el cual es apropiado cuando se tiene menos de 25 registros de ocurrencia. La validación de los modelos coloca a GARP como el método que presenta un mayor éxito predictivo, seguido por MAXENT. 10aMexican trout10aOncorhynchus chrysogaster10aSierra Madre Occidental10aspecies distribution modelling1 aRamírez-Huerta, Alejandro, Luis uhttps://truchasmexicanas.myspecies.info/content/modelaci%C3%B3n-y-caracterizaci%C3%B3n-ambiental-del-%C3%A1rea-de-distribuci%C3%B3n-potencial-de-oncorhynchus02005nas a2200325 4500008004100000020001400041245008800055210006900143260001600212300001600228490000700244520098600251653002601237653002601263653001801289653002401307653001801331653002801349653002201377100002301399700003401422700002101456700003601477700001701513700003501530700002201565700002201587700002201609856004801631 2014 eng d a1566-062100aGenetic introgression of cultured rainbow trout in the Mexican native trout complex0 aGenetic introgression of cultured rainbow trout in the Mexican n c2014/10/01/ a1063 - 10710 v153 a

The Mexican native trout complex is the group of salmonids that naturally has the southernmost distribution in the world. Despite its unique status and evidence of more than 13 distinct lineages, there are only two described species (Oncorhynchus mykiss nelsoni and O. chrysogaster). These fishes are threatened by environmental and anthropogenic factors, most notably the introduction of the exotic species O. mykiss (rainbow trout) for aquaculture. Here we applied population genetics analysis in 1,017 wild and cultured trout to understand the extent of genetic introgression of rainbow trout in Mexican native trout. Present results indicate a high degree of introgression and genetic admixture among introduced rainbow trout and some populations of Mexican native trout, exposing them to loss of genetic diversity. Thus, introduction of exotic trout for aquaculture purposes must be strictly regulated or avoided and we advise the use of native trout for aquaculture.

10aGenetic hybridization10agenetic introgression10aMexican trout10aNorthwestern Mexico10arainbow trout10aSierra Madre Occidental10aTruchas Mexicanas1 aEscalante, MarcoA.1 aGarcía-De-León, FranciscoJ.1 aDillman, CaseyB.1 aCamarillo, Anabelia, de los San1 aGeorge, Anna1 aBarriga-Sosa, Irene, de los A.1 aRuiz-Luna, Arturo1 aMayden, RichardL.1 aManel, Stéphanie uhttp://dx.doi.org/10.1007/s10592-014-0599-702045nas a2200337 4500008004100000020002500041245018600066210006900252260001600321300001600337490000600353520079600359653002501155653001801180653003001198653002801228653002201256100003601278700002601314700002401340700002801364700003101392700002601423700003401449700002201483700003801505700003501543700003701578700002901615856006301644 2013 eng d a1877-7252, 1877-726000aIsolation and characterization of 17 tetranucleotide microsatellite loci in the Mexican golden trout (Oncorhynchus chrysogaster, Needham & Gard 1964) derived from 454 pyrosequencing0 aIsolation and characterization of 17 tetranucleotide microsatell c2013/05/14/ a1009 - 10120 v53 a

We present seventeen microsatellite loci developed for the Mexican golden trout Oncorhynchus chrysogaster through GS-FLX 454 pyrosequencing. We selected 34 primer pairs tested on 19 trout specimens from The Rio Verde (Rio Fuerte Bain) and we tested cross amplification on 35 trout specimens collected in seven hydrological basins from the Sierra Madre Occidental and Sierra San Pedro Mártir, as well as five hatchery reared Oncorhynchus mykiss. We observed medium and high genetic variation among loci (mean number of alleles per locus = 8.0, SD = 2.92; mean H O = 0.65, SD = 0.27). These loci are the first to be characterized explicitly for O. chrysogaster and they are expected to be useful for population studies in this species and as reference for species delimitation.

10aMexican golden trout10aMexican trout10aOncorhynchus chrysogaster10aSierra Madre Occidental10aTruchas Mexicanas1 aGarcía-De-León, Francisco, J.1 aLozano-Garza, Adrián1 aMayden, Richard, L.1 aDelgado-Vega, Rigoberto1 aCamarena-Rosales, Faustino1 aRuiz-Campos, Gorgonio1 aEscalante-Sánchez, Marco, A.1 aRuiz-Luna, Arturo1 aDel Río-Portilla, Miguel, Ángel1 aBarriga-Sosa, Irene, de los A.1 aArcos-Ortega, Guadalupe, Fabiola1 aPaniagua-Chávez, Carmen uhttp://link.springer.com/article/10.1007/s12686-013-9956-y03941nas a2200433 4500008004100000245010000041210006900141260001200210300001400222490001300236520260400249653002002853653001402873653001202887653001202899653002602911653002602937653001702963653001802980653001502998653002803013653001203041653001103053653002203064100002603086700002403112700001803136700001503154700002003169700001703189700001803206700001503224700002603239700002203265700002503287700001703312700003603329856014203365 2003 eng d00aMexican native trouts: a review of their history and current systematic and conservation status0 aMexican native trouts a review of their history and current syst c2003/// a273 - 3160 v12(2002)3 a

While biologists have been aware of the existence of native Mexican trouts for over a century, they have received little study. The few early studies that did much more than mention their existence began in the 1930s and continued into the early 1960s, focusing primarily on distributional surveys and taxonomic analyses. Starting in the 1980s the Baja California rainbow trout became the subject of more detailed studies, but very little remains known of mainland trouts of the Sierra Madre Occidental. We review earlier studies and report on our own collections and observations made between 1975 and 2000. We present newly discovered historical evidence that leads us to conclude that a ``lost'' cutthroat trout, a lineage not previously known from Mexico, was collected more than a century ago from headwaters of the R¡o Conchos (a major tributary of the Rio Grande (= R¡o Bravo)), a basin not previously considered to harbor a native trout. We review the last century of regional natural resource management and discuss our own observations of trout habitats. Impacts of logging, road building and overgrazing are widespread and expanding. Many streams suffer from heavy erosion, siltation and contamination, and though long-term hydrologic data are generally not available, there is evidence of decreased discharge in many streams. These problems appear related to region-wide land management practices as well as recent regional drought. Trout culture operations using exotic rainbow trout have rapidly proliferated throughout the region, threatening genetic introgression and/or competition with native forms and predation on them. Knowledge of distribution, abundance, relationships and taxonomy, not to mention ecology and population biology, of native trouts of the Sierra Madre Occidental remains inadequate. Vast areas of most mainland drainages are still unexplored by fish collectors, and even rudimentary information regarding basic biology, ecology and population structure of stocks remains lacking. Concentrated exploration, research and management of this long overlooked and undervalued resource are all urgently needed. The history of natural resources exploitation that placed so many native trouts of the western United States on threatened and endangered species lists is repeating itself in the Sierra Madre Occidental. Without concerted action and development of region-wide socio-economic solutions for current, largely non-sustainable resource management practices, native Mexican trout gene pools will soon be in grave danger of extinction.

10aBaja California10aChihuahua10aConchos10aDurango10agenetic introgression10aOnchorchynchus mykiss10aOnchorynchus10arainbow trout10aRio Grande10aSierra Madre Occidental10aSinaloa10aSonora10aTruchas Mexicanas1 aHendrickson, Dean, A.1 aEspinosa-Pérez, H.1 aFindley, L.T.1 aForbes, W.1 aTomelleri, J.R.1 aMayden, R.L.1 aNielsen, J.L.1 aJensen, B.1 aRuiz-Campos, Gorgonio1 aVarela-Romero, A.1 aVan Der Heiden, A.M.1 aCamarena, F.1 ade León, Francisco, J. García uhttps://truchasmexicanas.myspecies.info/content/mexican-native-trouts-review-their-history-and-current-systematic-and-conservation-status