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-002977nas 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.1324603319nas a2200253 4500008004100000245008600041210006900127260007700196300000800273520249100281653002502772653001202797653001302809653001802822653002002840653001702860653001402877653001802891653002402909653003702933653002202970100002802992856004503020 2014 eng d00aGenetic Investigation Of The Pacific Trout Complex: From Pedigrees To Phylogenies0 aGenetic Investigation Of The Pacific Trout Complex From Pedigree aSanta Cruz, CaliforniabUniversity of California Santa Cruzc2014/01/01/ a1643 aPerhaps one of the world's most important groups of fish are the species within the Pacific trout complex, due to their harvest in fisheries and use in aquaculture. This dissertation consists of an in-depth evaluation of this group at different scales, from the assessment of biological traits throughout the reconstruction of pedigrees in two populations to a phylogeographic examination of multiple largely undescribed species. Here, a combination of novel molecular techniques allowed me to address critical ecological questions for the management and conservation of this group.In chapter one, I describe the discovery, characterization and development of single nucleotide polymorphisms for O. mykiss for the study of ecological interactions, phylogeography, and conservation status. These tools have great power for population genetic analysis, and for individual identification and pedigree reconstruction. The last allows the tracking of families, and an unprecedented level of evaluation of natural and hatchery populations.Chapter two expands the scope of these molecular tools to provide a powerful means of understanding of biological traits for steelhead hatchery programs in the Russian River, California. Reconstruction of cohort age distributions revealed a strong component of fish that spawn at age two, in contrast to program goals and distinct from naturally spawning steelhead. Correlations between family members in the day of spawning revealed a strongly heritable component to this life history trait and demonstrated the potential for selection to alter life history traits. These results demonstrate the promise of SNP-based pedigree reconstruction for providing biological inference in high-fecundity organisms.Chapter three describes how the molecular tools developed were applied to population genetics of trout inhabiting northwestern Mexico, to elucidate biodiversity, and evolutionary history, and measure introgression from hatchery rainbow trout. Here, I confirmed the vast genetic diversity present in northwestern Mexican trout and provided evidence that trout inhabiting the Sierra Madre Occidental correspond to independent lineages separated from O. mykiss. Introgression from non-native trout was detected, but the genetic integrity of native trout is still maintained. All the information presented in this document will help to guide effective conservation strategies for this globally important group of fishes.10aConservation biology10aEcology10aGenetics10aMexican trout10aMicrosatellites10aOncorhynchus10aPedigrees10aPhylogenetics10aPopulation genetics10aSingle nucleotride polymorphisms10aTruchas Mexicanas1 aAbadía-Cardoso, Alicia uhttp://escholarship.org/uc/item/4ks0b0sm04452nas 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-oncorhynchus02749nas 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.pdf02005nas 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/s10592-014-0599-702085nas a2200337 4500008004100000245011300041210006900154260001200223300001200235490000700247520102100254653001401275653001201289653001701301653001501318653000901333653001801342653001701360653002401377653001801401653001501419653002201434100003101456700002601487700002301513700002401536700002601560700002901586700003601615856009601651 2008 eng d00aMitochondrial haplotype variation in wild trout populations (Teleostei: Salmonidae) from northwestern Mexico0 aMitochondrial haplotype variation in wild trout populations Tele c2008/// a33 - 450 v183 a

The variation and composition of Mexican wild trout mitochondrial DNA haplotypes throughout northwestern Mexico was determined by means of polymerase chain reaction-restriction fragment polymorphism analysis (PCR-RFLP), of one region of mitochondrial DNA between cytochrome b and the D-loop. This analysis was based on 261 specimens taken in 12 basins and four hatcheries from northwestern Mexico. From 23 haplotypes, 15 wild trout haplotypes were identified and classified in four groups: (1) one restricted to Nelson's trout (Oncorhynchus mykiss nelsoni), (2) four restricted to R¡o Mayo and R¡oYaqui trout (O. mykiss sspp.), (3) six to Mexican golden trout (O. chrysogaster) with two subgroups, and (4) one exclusive to R¡o Piaxtla trout. Distributions of native haplotypes broadly overlap the distribution of non-native hatchery rainbow trout reflecting the historical management of introductions of exotic rainbow trout and the artificial transference of these trout among basins.

10aChihuahua10aConchos10aCytochrome b10aendangered10aMayo10aMexican trout10aOncorhynchus10aOncorhynchus mykiss10arainbow trout10aSalmonidae10aTruchas Mexicanas1 aCamarena-Rosales, Faustino1 aRuiz-Campos, Gorgonio1 aRosa-Vélez, Jorge1 aMayden, Richard, L.1 aHendrickson, Dean, A.1 aVarela-Romero, Alejandro1 ade León, Francisco, J. García u⬚d:\users\dean_h\reprints in pdf or other\Camarena_2008_Mt_haplotype_Mexican_trout.pdf⬚02045nas 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-y07219nas a2200625 4500008004100000020001800041245017900059210006900238260014600307300001400453520510100467653001305568653001405581653001705595653001105612653001205623653001405635653001105649653001805660653001105678653001705689653001305706653001605719653001205735653001105747653002205758100002605780700002105806700002405827700001705851700002205868700003105890700002205921700001705943700003105960700002205991700002906013700002306042700003606065700001706101700001606118700002606134700002106160700002606181700002606207700002406233700002206257700002606279700001706305700002606322700002906348700003506377700003606412856014506448 2007 eng d a970-694-336-600aConservation of Mexican native trout and the discovery, status, protection and recovery of the Conchos trout, the first native Oncorhynchus of the Atlantic drainage in Mexico0 aConservation of Mexican native trout and the discovery status pr aMonterrey, Nuevo León, MéxicobDirección de Publicaciones, Universidad Autónoma de Nuevo León, Facultad de Ciencias Biológicasc2007/// a162 - 2013 a

The Northwestern Sierra Madre Occidental of Mexico is a rugged mountain range covering portions of Sonora, Chihuahua, Durango and Sinaloa, and is drained by multiple Pacific Slope Rivers to the west and the Casas Grandes, Conchos, and Nazas to the east. The overall area is topographically, climatically and biotically diverse, ranging from endorheic basins (Casas Grandes) to mountainous areas elevations up to 3348 m, average mean temperatures from 10-20°C and precipitation from 250- 1100 mm/yr. The region is also geological complex that, combined with these other variables, provides a great diversity of both aquatic and terrestrial habitats conducive to both biotic endemicity and diversity. The overall diversity of the region has contribiited to the recent listing of this region by Conservation International as one of six new high-priority biodiversity hotspots. Our understanding of the aquatic and terrestrial biodiversity of this region, however, is poor and in urgent need of rapid investigation by collaborative communities. The combination of an incredibly rugged landscape, drug and bandit activities and indigenous peoples that have not always been welcoming to visitors has resulted in a general paucity of roads in the region, and the lack of access has limited inventory studies. Recently, however, access to the region has changed dramatically and many of the areas are now accessible enough for logging, mining, and agriculture practices, all exerting extreme pressures in some areas on the biodiversity. In addition to human-induced changes to these diverse ecosystems, impacts of invasive aquatic species are becoming more and more apparent, and the potential for severely reducing population sizes of species or their extirpation or extinction is real. While several invasive or exotic species are identified as potentially destructive to these communities, the exotic Rainbow Trout (Oncorhynchus mykiss) that is derived from hatcheries or culture facilities within the region represents one of the most critical threats to the aquatic and semi-aquatic biodiversity. The native trout of mainland Mexico represent the southern- most salmonids, and are at imminent risk of introgression and/or replacement by feral Rainbow Trout, Oncorhynchus mykiss. Our recent survey efforts have expanded the known diversity and ranges of each of several distinct forms, which we feel represent valid species. We discuss our discovery of multiple new species from the Sierra Madre Occidental and focus on a new species of trout restricted to the upper Conchos drainage, the first native species of Oncorhynchus known to occupy the Atlantic Slope in Mexico. Many of these taxa are restricted to small areas of intact habitat in headwater areas of high-elevation streams, and are at risk from a suite of human-associated perturbations, emerging diseases, and introduced species. These fishes occupy unique habitats, and represent a diverse portion of the Mexican montane ichthyofauna. The habitats on which they depend support a wide range of other aquatic organisms, most of which are grossly understudied. The discovery of the Conchos Trout derived primarily by GARP niche modeling of a subset of localities of previously sampled undescribed native Mexican trout, provides only a snapshot of the biodiversity awaiting to be discovered in this region. The rugged landscape of the Sierra Madre Occidental simply precludes routine sampling at easily accesible locations of streams and most sampling locations require time-intensive access. In an effort to rapidly assess the biodiversity of rivers of this region we employed this method to aid in predicting the most suitable and highly probable Mexican trout niches in the region. This method offered highly efficient and powerful results that not only predicted the occurrence of a previously unknown trout in the upper Rio Conchos but also provided excellent predictions of available habitats in drainages where previously unknown trout have been discovered by the Truchas Mexicanas team in the last nine years. Multiple threats exist to the biodiversity of the northern Sierra Madre Occidental, including uncontrolled introductions of exotic and invasive species, emerging diseases such as whirling disease, Myxobolus cerebralis, infectious pancreatic necrosis (IPN), iridioviruses and pathogenic water mold, Saprolegnia ferax, land-use practices leading to habitat degradation via overgrazing, logging, deforestation and road construction, increasing human population growth, over-fishing or overharvesting of aquatic resources and global climate cliange reducing surface and ground water in the area and creating environments more conducive to the spread of invasive species, congregated and dense human populations, and emerging diseases. Immediate actions need to be developed to aid in public education as to the threats to these ecosystems, protection of areas, assessment of diversity, and sustainable development throughout the region that incorporates a likely highly successful ecotourism system for the region.

10aAtlantic10aChihuahua10aconservation10adesert10aDurango10aEcosystem10afishes10aMexican trout10aMEXICO10aOncorhynchus10arecovery10aRio Conchos10aSinaloa10aSonora10aTruchas Mexicanas1 aHendrickson, Dean, A.1 aNeely, David, A.1 aMayden, Richard, L.1 aAnderson, K.1 aBrooks, James, E.1 aCamarena-Rosales, Faustino1 aCutter, Ralph, F.1 aCutter, Lisa1 aCamarillo, Ana, Belia De L1 aErnsting, Guy, W.1 aEspinosa-Pérez, Héctor1 aFindley, Lloyd, T.1 ade León, Francisco, J. García1 aGeorge, A.L.1 aHatch, John1 aKuhajda, Bernanrd, R.1 aMayden, Kyle, E.1 aMcNyset, Kristina, M.1 aNielsen, Jennifer, L.1 aPfeiffer, Frank, W.1 aPropst, David, L.1 aRuiz-Campos, Gorgonio1 aSt.Clair, E.1 aTomelleri, Joseph, R.1 aVarela-Romero, Alejandro1 aLozano-Vilano, Ma., de Lourdes1 aContreras-Balderas, Armando, J. uhttps://truchasmexicanas.myspecies.info/content/conservation-mexican-native-trout-and-discovery-status-protection-and-recovery-conchos-trout00621nas a2200205 4500008004100000020001300041245006200054210006100116260001200177300001300189490000700202653002100209653001800230100002600248700002100274700002300295700002400318700003200342856004100374 1980 eng d a0193850900aFishes of the Río Yaqui Basin, México and United States0 aFishes of the Río Yaqui Basin México and United States c1980/// a65 - 1060 v1510aIctalurus pricei10aMexican trout1 aHendrickson, Dean, A.1 aMinckley, W., L.1 aMiller, Robert, R.1 aSiebart, Darrel, J.1 aMinckley, Patricia, Haddock uhttp://www.jstor.org/stable/4002503800562nas a2200157 4500008004100000245007800041210006900119260001200188300001200200490001000212653001800222653002200240100001800262700001300280856011100293 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/content/rainbow-trout-mexico-and-california-notes-cutthroat-series01581nas 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/1440847