Intentional Importing

As mentioned earlier, this is an intentional means of introducing new species. There can be many reason for this, but in this blog we will discuss 2 reasons.

Firstly, species are introduced to the ecosystem intentionally to be established for a certain purpose. Whether legally or illegally, a new species can be introduced to reduce pest, increase food supply for native animals, or to add diversity to the existing ecosystem. Sometimes these introductions are calculated, but more often than not, most introductions are based on personal gains. For example, in Singapore, the Barbed Motoro Stingray, was likely introduced to Upper Selatar Reservoir by fishing enthusiast, and have since established their population. In this case, the stingray is being introduced to give add excitement to fishing in Singapore.

Barbed Motoro Stingray:

Stingray

Image from: http://iyb2010singapore.blogspot.sg/2010/03/bad-biodiversity-invasive-alien-species.html

Next, species that are brought over in captivity escape and then establish their population in the wild. This happen in some poorly managed wildlife parks, or in the exotic pet black market. Because of this threat, it is illegal to own any exotic pets such as reptiles or amphibians in Singapore. It is also illegal to release animals into the wild. This is because with sufficient numbers and suitable environment, the species may reproduce and establish itself.