02359nas a2200169   4500008004100000020002500041245015000066210006900216260001600285520171100301100002402012700002702036700002202063700001802085700002902103856005702132       2021                        eng d  a1566-0621, 1572-973700aPopulation genetics and species distribution modeling highlight conservation needs of the endemic trout from the Northern Sierra Madre Occidental0 aPopulation genetics and species distribution modeling highlight   c2021/06/23/3 aRecent climatic conditions are afecting biodiversity, particularly those species highly isolated and at their distribution limits such as trout (Oncorhynchus sp.) inhabiting the Northern Sierra Madre Occidental (NSMO) in Mexico, which is a current conservation concern due to their fragmented distribution and anthropogenic threads. Here, we compiled previously published data from 24 microsatellite loci from multiple localities of trout throughout the NSMO to construct geographic genetic structuring hypotheses. Our results confrm two genetically distinct subgroups within the NSMO corresponding to  the northern populations from Río Yaqui-Río Bavispe and Río Casas Grandes, and the southern population from Río Yaqui- Río Sirupa and Río Conchos. In addition, we found a strong genetic diferentiation between most of the locations sampled.  We assembled species distribution models (SDM) to estimate the current distribution of trout. The SDM show that suitable environmental conditions may exist between northern and southern populations but are highly fragmented. In addition, association analyzes between FST and environmental factors show that the minimum temperature of the coldest month, the precipitation of wettest month, and the compound topographic index were responsible for the genetic structure. These results along with the limited mobility of the species, support limited connectivity as a possible explanation for current north and south arrangement of diversity. This study provides deep insights into the ecology and divergence processes within Northern Sierra Madre Occidental trout, and for the urgent development of efective conservation strategies for each of those lineages.1 aAbadía-Cardoso, A.1 aHernández-Guzmán, R.1 aVarela-Romero, A.1 aGarza, J., C.1 aDe León, F., J. García  uhttps://link.springer.com/10.1007/s10592-021-01388-503854nas 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<p>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&#39;&#39; cutthroat trout, a lineage not previously known from Mexico, was collected more than a century ago from headwaters of the R&iexcl;o Conchos (a major tributary of the Rio Grande (= R&iexcl;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.</p>
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