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Las altas temperaturas están provocando que las lagunas y las marismas de Doñana pierdan agua rápidamente

La superficie inundada en la marisma es de un 78% pero la profundidad es escasa. Por otra parte, sólo el 1,9% de las lagunas temporales están inundadas. Las precipitaciones crean una oportunidad...

Traffic noise causes lifelong harm to baby birds

A study with CSIC participation reveals for the first time that car noise harms individuals throughout their lifetime even years after exposure

Illegal wildlife trade, a serious problem for biodiversity and human health

A research team led by the Doñana BIological Station and the University Pablo de Olavide have detected wild-caught pets in 95% of the localities in the Neotropic and warns of the risk of zoonotic...

Urbanization and loss of woody vegetation are changing key traits of arthropod communities

Urbanization is favouring smaller beetle species and larger spider species with greater dispersal capacity.

The loss of woody areas is linked to a decline in the duration of the activity...

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Optimization of protocols for DNA extraction from fecal samples

Optimization of protocols for DNA extraction from fecal samples

High-throughput sequencing offers new possibilities in molecular ecology and conservation studies. However, its potential has not yet become fully exploited for noninvasive studies of free–ranging animals, such as those based on feces. High–throughput sequencing allows sequencing of short DNA fragments and could allow simultaneous genotyping of a very large number of samples and markers at a low cost. The application of high throughput genotyping to fecal samples from wildlife has been hindered by several labor intensive steps. Alternative protocols which could allow higher throughput were evaluated for two of these steps: sample collection and DNA extraction. Two different field sampling and seven different DNA extraction methods were tested on grey wolf (Canis lupus) feces. There was high variation in genotyping success rates. The field sampling method based on surface swabbing performed much worse than the extraction from a fecal fragment. In addition, there is a lot of room for improvement in the DNA extraction step. Optimization of protocols can lead to very much more efficient, cheaper and higher throughput noninvasive monitoring. Selection of appropriate markers is still of paramount importance to increase genotyping success. informacion[at]ebd.csic.es: Sarabia et al (2020) Towards high-throughput analyses of fecal samples from wildlife. Animal Biodiver Conserv 43.2: 271–283 Doi 10.32800/abc.2020.43.0271


http://abc.museucienciesjournals.cat/volum-43-2-2020/towards-high-throughput-analyses-of-fecal-samples-from-wildlife/?lang=en