Introduced Species

Exam 4
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Introduced Species
Any plant, animal, or microbe that is not native to a region whether introduced accidentally or intentionally.
Domination of the Ecosystem
Cheatgrass was introduced into the USA and quickly spread to most states and dominated the ecosystem in some areas. This is what example regarding the negative impacts of introduced species?
Habitat Modification
Salt cedar was introduced into the USA and quickly formed forests in salty habitats that formerly did not grow trees. This is what example regarding the negative impacts of introduced species?
Causing Disease in Native Species
Chestnut blight fungus was introduced into the USA and has eliminated most native American chestnut trees. This is what example regarding the negative impacts of introduced species?
Eating Native Species
The brown tree snake was introduced into Guam and killed out many species of birds. This is what example regarding negative impacts of introduced species?
Competition with Native Species
European rabbits were introduced into Australia and compete with over grazing animals for food. This is what example regarding negative impacts of introduced species?
Hybridization with Native Species
The American ruddy duck was introduced into Europe and hybridizes with the endangered white-headed duck. This is what example regarding negative impacts of introduced species?
Allopatric Speciation
Speciation occurs when subpopulations become geographically isolated from one another.
Sympatric Speciation
Speciation occurs within a population.
Premating Isolating Mechanisms
What type of isolating mechanisms include:
-Live in different habitats
-Have different courtship patterns
-Reproductive parts do not fit together
-Breed at different time of day or year
Postmating Isolating Mechanisms
What type of isolating mechanisms include:
-Sperm can't fertilize the egg
-Hybrids all die
-Hybrids are weak
-Hybrids are healthy but usually sterile
Provides Better Hunting and Fishing
Chinese ring necked pheasants were introduced as a new sport hunting species. This is what example regarding positive impacts of introduced species?
Helps Control Pest Species of Plants and Animals
Chinese praying mantis was introduced to control garden pests. This is what example regarding positive impacts of introduced species?
Helps Economic Development
Several species of European earthworms were introduced that help recycle nutrients in the soil. This is what example regarding positive impacts of introduced species?
Norway Rat
This mammal was introduced into the USA in the 1700s. It also introduced the bubonic plague to the USA (causes black death of Europe). They have been domesticated and are now used as lab rats (some of the most docile lab rats there are).
House Mouse
This mammal was introduced into the USA by ships. It's habitat is mostly restricted to human structures. They have been domesticated and are used as lab rats.
House Sparrow
This bird was intentionally introduced into the USA. It has spread throughout most of North and South America.
European Starling
This bird was introduced into the USA and has spread throughout most of North America. It was introduced by 1 man who wanted to have all the birds Shakespeare talked about.
Fire Ant
This insect was unintentionally introduced into the USA. It is originally from South America where they are not considered a problem. They have spread across the southern US and have a toxic sting.
Zebra Mussel
This animal was introduced into the USA. It's range is rapidly spreading. It is thought to have come over in ships. They plug up intake water pipes in cities.
Kudzu Vine
This plant was introduced into the USA intentionally.
Carp
Theses invasive fish were introduced to the USA. They are members of the minnow family and grow to very large sizes under the right conditions.
Cyprinus Carpio
What is the scientific name for Common Carp?
Common Carp
This Carp: Can generally grow 12"-25" and be 8-10 lbs. but can grow to more than 50 pounds
Common Carp
This Carp: Has a mouth that is toothless and sucker-like, adapted to bottom feeding, and has two fleshy barbels on either side.
Common Carp
This Carp: Usually matures at age 2-4 and spawn in late May to early June in shallow backwaters and along the shoreline. Eggs are deposited on the bottom and stick to objects, such as plants, in the water. Females can lay anywhere from 100,000 to 2 million eggs that hatch within 3-10 days.
Common Carp
This Carp: Can grow quickly and can live, on average, 15 years but may live up to 50 years.
Common Carp
This Carp: Have predominantly vegetarian diets but will also feed on aquatic invertebrates. Their feeding impacts has severe impacts on wetland habitats because they suck up sediments and organisms from the bottom, uproot and destroy vegetation and muddy the water.
Common Carp
This Carp: Has been in North America since the late 1800s and are now so widely distributed that they are thought of as a native species in most areas. It is one of the most widely distributed.
Grass Carp
This Carp: Generally reaches lengths of 20"-35" but can grow well over 1 meter and weigh over 100lbs.
Grass Carp
This Carp: Has a mouth that is specially adapted to eating aquatic vegetation. It does does not possess the fleshy barbels of the Common Carp.
Grass Carp
This Carp: Prefers to spawn in fast-moving water to keep their eggs buoyant. The fry feed on small organisms until they reach approximately 3" in length they feed exclusively on plant material eating up to their own body weight each day.
Grass Carp
This Carp: Can live anywhere from 6-11 years.
Grass Carp
This Carp: Has been used to control aquatic plants in specific areas of the USA.
Grass Carp
This Carp: Was first introduced into the USA in 1963 by the US Fish and Wildlife Service for biological control of vegetation in aquatic environments.
Feral Species
Formerly domesticated species that return to living in the wild.
Feral Hogs
This feral species was introduced by the Spanish in the 1500s. The European wild boar was introduced in the 1930s and interbred with this species.
Feral Horses
This feral species was introduced by the Spanish in the 1500s.
Feral Goats
This feral species was very destructive on islands.
Feral Cats
This feral species is estimated to be 70 million in the USA and kill billions of birds and mammals.
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