Question

Rainbow trout is non- native to the United States. However this species is breeding with the native gula yltrout acientistrecently observed that the hola trout were becoming exitinct what is the cause of their extinction

Answer 1

Native fish species are declining due to hybridization with and competition from non-native species like rainbow trout, as well as human-induced environmental changes and introduced diseases.

Step-by-step explanation:

The decline of native fish species such as Hola trout (a hypothetical species) in the United States can be largely attributed to the introduction of non-native species such as rainbow trout (Oncorhynchus mykiss), which breed with native species leading to hybridization and genetic extinction.

This hybridization can cause the original species to disappear if there is sufficient gene exchange. Non-native species may also outcompete native species for food and habitat, sometimes facilitated by human alterations to the environment, such as the changes in water flow due to dams or habitat degradation, which can favor the invaders.

In addition, introduced fish parasites and diseases can have devastating effects on native fish populations, such as the spread of whirling disease by infected rainbow trout. Policies have evolved over time to prevent stocking non-natives in areas where they might negatively impact native fish, but past introductions continue to affect native biodiversity.