04346nas a2200169 4500008004100000245018200041210007300223260010500296300000900401520356200410653001803972653003003990653002804020653003504048100003704083856005604120 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/es/node/18602977nas a2200289 4500008004100000020001400041245017000055210006900225260001200294300001600306490000700322520198600329653001402315653001702329653001802346653003002364653001802394653002402412653003502436653002202471100003202493700003602525700002402561700001902585700002202604856006102626 2018 eng d a1365-269900aThe interplay of riverscape features and exotic introgression on the genetic structure of the Mexican golden trout (Oncorhynchus chrysogaster), a simulation approach0 ainterplay of riverscape features and exotic introgression on the c2018/// a1500 - 15140 v453 aAim We explored the factors between riverscape features and exotic introgression of cultured rainbow trout (Oncorhynchus mykiss) that drive the current genetic structure in the endemic Mexican golden trout (Oncorhynchus chrysogaster) using a riverscape genetics simulator. Location Sierra Madre Occidental, Northwest Mexico, North America. Methods We created a system model for Mexican golden trout to test various scenarios for the effect of riverscape resistance and rainbow trout introgression on the native genetic structure of the Mexican golden trout. Individual genotypes were used to initialize the model and were based upon empirical allele frequencies from three genetically and spatially distinct groups in the study area. The geographical location of the simulated populations was defined using a species distribution model. We included hypotheses for movement of riverine distance and riverscape resistance. We evaluated model performance by conducting population and landscape genetics analyses on the simulation outputs. Results The most plausible scenario included riverscape resistance without introgression, which presented a spatial genetic structure matching the observed riverscape genetic structure and fitting expected general life-history patterns for high elevation trout streams. In addition, temperature, precipitation, hydrology and topography were the most important variables influencing species occurrence and dispersal. Main conclusion This work presents one of the first empirically derived simulation studies of introgression. It highlights the importance of considering riverscape resistance (i.e. hydroclimatic and topographical gradient effects) in models of spatial genetic structure and introgression. Moreover, our modelling suggests that what we characterize as riverscape resistance is acting as a boundary against exotic introgression. The results of this study could help to develop management strategies that preserve native gene pools.10aCDMetaPOP10aexotic trout10aMexican trout10aOncorhynchus chrysogaster10arainbow trout10ariverscape genetics10aspecies distribution modelling10aTruchas Mexicanas1 aEscalante, Marco, Alejandro1 aDe León, Francisco, J. García1 aRuiz‐Luna, Arturo1 aLandguth, Erin1 aManel, Stéphanie uhttp://onlinelibrary.wiley.com/doi/abs/10.1111/jbi.1324604346nas a2200169 4500008004100000245018200041210007300223260010500296300000900401520356200410653001803972653003003990653002804020653003504048100003704083856005604120 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/es/node/17002749nas a2200133 4500008004100000245014000041210007100181260001600252520220600268653001802474653003002492100002302522856007002545 2020 eng d00aModelación de la distribución de truchas nativas de la Sierra Madre Occidental y su relación con la estructura del paisaje adyacente0 aModelación de la distribución de truchas nativas de la Sierra Ma c2020/03/30/3 aEl proyecto se centra en el estudio de truchas nativas de México, que se distribuyen en la Sierra Madre Occidental. Se reconoce la existencia de la especie Oncorhynchus chrysogaster (Needham y Gard, 1964), denominada Trucha dorada mexicana (PISCES: Salmonidae), misma que está reportada como especie endémica amenazada en la NOM-059-SEMARNAT-2010 y como especie vulnerable en CITES (Conference on International Trade in Endangered Species). La situación de riesgo es aún más grave si se considera que estudios recientes indican que por la heterogeneidad genética de este complejo de peces, es posible la identificación de nuevas especies o subespecies de truchas nativas (Hendrickson et al., 2002, Hendrickson et al., 2006). Considerando lo anterior y tomando en cuenta que existen algunas iniciativas (particularmente realizadas por académicos estadounidenses y mexicanos), enfocadas al estudio sistemático y genético de este grupo de peces, se propone complementarlas con el análisis espacial del paisaje del área de distribución potencial de O. chrysogaster. Para ello se analizarán los registros históricos, los datos existentes con referencia geográfica específica y adicionalmente los datos que se generen a partir de este proyecto, para producir un modelo de distribución de esta especie en la Sierra Madre Occidental. Dado el escaso registro con que se cuenta se considera indispensable la colecta con fines de ampliar dicho registro, pero particularmente con la intención de validar en lo posible el modelo que se genere. Se aplicarán técnicas de percepción remota que permitirán identificar las características ambientales de las localidades de registro (red hidráulica, altitud, pendiente, tipos de cobertura) y que podrán ser incorporadas a un sistema de información geográfica (SIG), conjuntamente con información auxiliar (temperaturas promedio, precipitación, geología, etc.). La identificación de estas características, en conjunto con datos de la presencia/ausencia de las truchas permitirá generar mapas de susceptibilidad de las áreas de distribución de estas especies por medio de modelos del nicho ecológico, por ejemplo MAXENT y Mahalanobis.10aMexican trout10aOncorhynchus chrysogaster1 aLuna, Arturo, Ruiz uhttps://www.gbif.org/dataset/90711430-4260-422f-aeb2-26ce7f72f56c00599nas a2200133 4500008004100000020001600041245019800057210006900255260001200324653001800336653002200354100002400376856006500400 2006 eng d aDEB 024018400aSGER: Biodiversity of Native Mexican Trout (Genus Oncorhynchus spp.) and The Impending Treat of Their Demise by The Exotic Rainbow Trout O. mykiss gairdneri (Teleostei: Salmonidae). DEB 02401840 aSGER Biodiversity of Native Mexican Trout Genus Oncorhynchus spp c2006///10aMexican trout10aTruchas Mexicanas1 aMayden, Richard, L. uhttp://bio.slu.edu/mayden/truchas/NSF_trout_final_report.pdf02045nas 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-y00505nas a2200157 4500008004100000245007800041210006900119260001200188300001200200490001000212653001800222653002200240100001800262700001300280856005400293 1959 eng d00aRainbow trout in Mexico and California with notes on the cutthroat series0 aRainbow trout in Mexico and California with notes on the cutthro c1959/// a1 - 1240 v67(1)10aMexican trout10aTruchas Mexicanas1 aNeedham, P.R.1 aGard, R. uhttps://truchasmexicanas.myspecies.info/es/node/301581nas a2200181 4500008004100000245008200041210006900123260001600192300001400208490000900222520102300231653002501254653001801279653002201297100002201319700001801341856004001359 1964 eng d00aA New Trout from Central Mexico: Salmo chrysogaster, the Mexican Golden Trout0 aNew Trout from Central Mexico Salmo chrysogaster the Mexican Gol c1964/03/26/ a169 - 1730 v19643 a

In August 1952, a beautiful, golden-coloredtrout was collected in the Rio Verde near Guadalupe y Calvo in southwestern Chihuahua. This trout was described, but not named, by Needham and Gard (1959). We did not name it at that time because we had little information concerning the amount of variability found in western North American members of the genus Salmo throughout its entire range. Before this trout was named we wanted to be confident that its distinctive characters had a genetic basis and were not mainly phenotypic expressions of local environmental phenomena. The compilation of data by Needham and Behnke (unpublished) on more than 2,000 specimens of the genus Salmo from western North America, collected from virtually their entire native range, has demonstrated that, indeed, the Mexican golden trout is a distinct group and worthy of taxonomic recognition. Taxonomic methods used are essentially those listed in Hubbs and Lagler (1949) with the modifications noted in Needham and Gard (1959).

10aMexican golden trout10aMexican trout10aTruchas Mexicanas1 aNeedham, Paul, R.1 aGard, Richard uhttp://www.jstor.org/stable/144084700591nas a2200157 4500008004100000245011500041210006900156260004700225300001400272100001900286700002600305700001500331700001700346700001600363856005400379 1986 eng d00aGeography of western North American freshwater fishes: description and relations to intracontinental tectonism0 aGeography of western North American freshwater fishes descriptio aNew York, NYbJohn Wiley and Sonsc1986/// a519 - 6131 aMinckley, W.L.1 aHendrickson, Dean, A.1 aBond, C.E.1 aHocutt, C.H.1 aWiley, E.O. uhttps://truchasmexicanas.myspecies.info/es/node/703854nas a2200433 4500008004100000245010000041210006900141260001200210300001400222490001300236520260400249653002002853653001402873653001202887653001202899653002602911653002602937653001702963653001802980653001502998653002803013653001203041653001103053653002203064100002603086700002403112700001803136700001503154700002003169700001703189700001803206700001503224700002603239700002203265700002503287700001703312700003603329856005503365 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/es/node/11