03426nas a2200241 4500008004100000245012700041210007000168260001200238300001400250490000700264520257200271653002502843653002402868653002002892653001702912100003702929700003202966700002902998700003103027700003103058700002603089856006903115 2019 eng d00aVariabilidad genética poblacional de la trucha Yaqui (Oncorhynchus sp.) en la región de Mesa Tres Ríos, Sonora, México0 aVariabilidad genética poblacional de la trucha Yaqui Oncorhynchu c2019/// a134 - 1420 v213 aLa trucha Yaqui pertenece a un grupo de truchas nativas no descritas del género Oncorhynchus del Noroeste de México. Estudios morfológicos y moleculares postulan a la trucha Yaqui como una nueva especie exclusiva para las cuencas de los ríos Yaqui, Mayo y Casas Grandes y, evolutivamente muy cercana a la trucha arcoíris, Oncorhynchus mykiss. El conocimiento de su historia natural es escaso. Se estudió la variabilidad genética poblacional y su estatus de conservación en su distribución en Sonora en la región de Mesa Tres Ríos. Se muestrearon seis arroyos de aguas frías (localidades) en la región de Mesa Tres Ríos en dos vertientes geográficas en la búsqueda de estructura genética poblacional. Se analizaron 61 secuencias completas de la región control del ADN mitocondrial. Se obtuvieron nueve haplotipos, tres de ellos se encontraron en ambas vertientes de las localidades del área estudiada. Los resultados mostraron una baja diferenciación genética poblacional (Fst = 0.08035) y un moderado número de migrantes por generación (Nem = 5.72), que resulta en una falta de estructura poblacional y sustenta la hipótesis de una sola población de trucha Yaqui en las vertientes muestreadas de la región de Mesa Tres Ríos, Sonora.Yaqui trout belongs to a group of undescribed native trouts of the Oncorhynchus genus in the Northwest Mexico. Morphological and molecular studies postulate the Yaqui trout as a new species exclusively inhabiting the Yaqui, Mayo and Casas Grandes rivers basins, and with a very close evolu-tionary relationship to the rainbow trout, Oncorhynchus my-kiss. Knowledge of its natural history is scarce. We studied the population genetic variability and its conservation status in its distribution in Sonora in the Mesa Tres Ríos region. Six cold water streams (localities) were sampled in the Mesa Tres Ríos region in two geographic slopes in the search for population genetic structure. We analyzed 61 complete sequences of the mitochondrial DNA control region. Nine haplotypes were obtained, three of them found in both slopes of the localities in the studied area. Results showed a low population genetic differentiation (Fst = 0.08035), and a moderate number of migrants per generation (Nem = 5.72), which results in a lack of population structure, and supports the hypothesis of a single population of Yaqui trout in the sampled watersheds from the Mesa Tres Ríos region, Sonora.Keywords: Control region, Genetic structure, Yaqui trout, Northwest Mexico 10aEstructura genética10aNoroeste de México10aRegión control10atrucha Yaqui1 aBallesteros-Córdova, Carlos, A.1 aVarela-Romero, Alejandro, V1 aGrijalva-Chon, José, M.1 aCastillo-Gámez, Reyna, A.1 aCamarena-Rosales, Faustino1 aRuiz-Campos, Gorgonio uhttp://biotecnia.unison.mx/index.php/biotecnia/article/view/104502748nas a2200205 4500008004100000020001400041245011200055210007100167260001600238300001400254490000700268520200500275100003102280700002602311700003102337700003802368700003402406700003802440856006402478 2018 eng d a2215-207500aComposición taxonómica y abundancia espacio-temporal de la ictiofauna del Río Presidio, Sinaloa, México0 aComposición taxonómica y abundancia espaciotemporal de la ictiof c2018/05/24/ a848 - 8620 v663 aTaxonomic composition and spatio-temporal abundance of the ichthyofauna in Presidio River, Sinaloa, Mexico. The Rio Presidio in the southern Sinaloa, Mexico belongs to Nearctic-Neotropical zoogeographical transition zone, where its fish fauna could manifest changes in the abundance and distribution of the species during rainy and dry periods. The main objective of this study was to describe the taxonomic composition and spatial and temporal abundance of the fish fauna from the lower and middle Rio Presidio, by means of bimonthly samplings from April 2008 to February 2009. Forty fish species (39 native and 1 exotic) belonging to 32 genera and 19 families were registered. Two families (Gerreidae and Poeciliidae) contained the highest numbers of species (five and four, respectively). Six species (Lile stolifera, Oreochromis aureus, Awaous banana, Anchoa analis, Gobiomorus maculatus and Atherinella crystallina) in this order of importance contributed with almost 49 % of the total fish abundance. Species richness and salinity showed a direct relationship and an inverse relationship with the altitude. Based on the coefficient of similarity of species among sites two fish assemblages were identified. The first assemblage formed by species from marine derivation (peripheral) occurring in the lower part of the river, and the second assemblage by secondary freshwater species in the middle part. The higher fish species similarity observed in August and September was under the influence of the highest flows of the rainy period. Twenty-seven 27 species showed affinity to the Tropical Eastern Pacific Region, six species to the Neotropical region and two to the Nearctic region (Dorosoma smithi and Ictalurus cf. pricei ); one species has an Amphiatlantic distribution (Mugil curema), another is circumtropical (Mugil cephalus), two species have Amphiamerican distribution (A. monticola and G. cinereus), and one is exotic (O. aureus). Rev. Biol. Trop. 66(2): 848-862. Epub 2018 June 01.1 aSánchez-Gonzáles, Sergio1 aRuiz-Campos, Gorgonio1 aHerrrera-Flores, Alejandro1 aLozano-Vilano, María, de Lourdes1 aGonzález-Acosta, Adrián, F.1 aInzunza-Beltrán, Héctor, Manuel uhttps://revistas.ucr.ac.cr/index.php/rbt/article/view/3341802486nas a2200277 4500008004100000020001400041245023500055210006900290260001600359490000700375520144000382653001901822653001001841653001201851653001001863653003201873653002201905100003301927700002601960700002701986700002202013700003902035700003102074700002702105856007602132 2021 eng d a1723-863300aDaily, seasonal, and annual variability of temperature in streams inhabited by the endemic San Pedro Martir trout (Oncorhynchus mykiss nelsoni), in Baja California, Mexico, and the predicted temperature for the years 2025 and 20500 aDaily seasonal and annual variability of temperature in streams  c2021/05/25/0 v803 aThe present study measured the daily, seasonal, and annual variability of the water temperature of streams in which the endemic rainbow trout, Oncorhynchus mykiss nelsoni, is distributed on the western slope of the Sierra San Pedro Mártir, Baja California, Mexico, between 1996 and 2019. The seasonal thermal interval and daily duration of summer temperatures above the thermal threshold for this trout subspecies (≥ 28°C) were determined in streams at different elevations (553, 1,220, and 2,080 masl, or meters above sea level). Temperatures ≥ 28°C were recorded at the study site on the stream with the lowest elevation (San Antonio de Murillos Creek) over an accumulated 365 h between June and September 2014, with the maximum temperature recorded there, 30.66 °C, making it the site most vulnerable to climate change. At the San Antonio de Murillos Creek, the average water temperature predicted by three models (GFDL R30, HadCM3, and Mote) for the year 2025 would be a non-lethal temperature, < 28 °C, for trout at a minimum elevation of 491-511 masl, while this was predicted to be 545-701 masl for the year 2050. Predicted hourly water temperatures of 28°C (non-lethal) may occur at minimum elevations of 868-898 masl in 2025 and at 908-1028 masl in 2050, reducing a 21-23% and 23-31% its current altitudinal distribution range, respectively, thus avoiding its presence at the type locality (San Antonio de Murillos).10aclimate change10acreek10aendemic10amodel10aOncorhynchus mykiss nelsoni10awater temperature1 aMeza-Matty, Iván, Alejandro1 aRuiz-Campos, Gorgonio1 aDaesslé, Luis, Walter1 aRuiz-Luna, Arturo1 aLópez-Lambraño, Álvaro, Alberto1 aCamarena-Rosales, Faustino1 aMatthews, Kathleen, R. uhttps://www.jlimnol.it/index.php/jlimnol/article/view/jlimnol.2021.200102085nas 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-y00551nas a2200145 4500008004100000245014000041210007000181260001200251300001400263490001000277653002000287653001800307100002600325856005400351 1989 eng d00aRepoblación natural por trucha arcoiris Salmo gairdneri nelsoni en un transecto del Arroyo San Pedro Mártir, Baja California, México0 aRepoblación natural por trucha arcoiris Salmo gairdneri nelsoni  c1989/// a552 - 5560 v34(4)10aBaja California10aMexican trout1 aRuiz-Campos, Gorgonio uhttps://truchasmexicanas.myspecies.info/es/node/803854nas 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