Climate Change and Trout
This study found an increase in hybridization between native and invasive trout species because of the decrease in local spring precipitation and an increase in summer stream temperatures.
From the paper:
rapid climate warming can exacerbate interactions between native and non-native species through invasive hybridization, which could spell genomic extinction for many species.
Originally shared by US Department of the Interior
Climate Change Accelerates Hybridization between Native and Invasive Species of Trout
Yep, it’s a mouthful, but it’s a potential “big deal” of climate change
Scientists have discovered that the rapid spread of hybridization between a native species and an invasive species of trout in the wild is strongly linked to changes in climate.
In the study, stream temperature warming over the past several decades and decreases in spring flow over the same time period contributed to the spread of hybridization between native westslope cutthroat trout and introduced rainbow trout – the world’s most widely introduced invasive fish species –across the Flathead River system in Montana and British Columbia, Canada.
Experts have long predicted that climate change could decrease worldwide biodiversity through cross-breeding between invasive and native species, but this study is the first to directly and scientifically support this assumption. The study, published today in Nature Climate Change, was based on 30 years of research by scientists with the U.S. Geological Survey, University of Montana, and Montana Fish, Wildlife & Parks. (http://on.doi.gov/1w3JEq9)
Here’s the article, “Invasive hybridization in a threatened species is accelerated by climate change”: http://bit.ly/1kEUTQR
#science #climatechange #climatescience #hybrid #fish #invasivespecies