The most important aspect that is considered while stating the difference between a ship and a boat is the size. It is said that the best way to differentiate between a ship and a boat is to remember that âA ship can carry a boat, but a boat cannot carry a ship.â. Credit: Jyoti Luthra.
Site and Date of Introduction: The brown tree snake was introduced into Guam in the 1950s. The snake was first sighted inland from the seaport and became conspicuous throughout central Guam by the 1960s.By 1968, brown tree snakes had successfully dispersed throughout the island.eason(s) Why it has Become Established: The brown tree snake has become established on Guam due to the absence of natural population controls and the abundance of vulnerable prey on the island. For example, introduced lizards are popular food items for young snakes.
This species has been introduced to the U.S. territory of Guam. In 1993 a brown tree snake was found in Corpus Christi, Texas in a shipment of cargo from Guam (McCoid et al.1994). As of 2010, this species is not reported in Texas.he brown tree snake is an effective predator of small vertebrates, including birds and lizards. The brown tree snake has decimated bird populations in Guam. The species also causes frequent power outages by climbing onto power lines and wooden poles (USGS Date unknown) and is a noted agricultural pest (ISSG 2006a).