Invasive species

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  • 1. Alien Name: Caulerpa Taxifolia Common Name: Killer Algae Type: Alga Cause: Human Mistake

2. The Killer Algae Caulerpa taxifolia is a species of seaweed. Native to the Indian Ocean, it has been commonly used as ornamentation in aquarium installations around the world. The alga produces a large amount of a single chemical that is toxic to fish and other would-be predators. It appears that, in 1984, this seaweed was accidentally released into coastal waters of the Mediterranean Sea just below the Oceanographic Museum of Monaco. The appearance off the California coast was most probably caused by an aquarium owner improperly dumping the contents.Alien Name: Caulerpa Taxifolia Common Name: Killer Algae Type: Alga Cause: Human Mistake 3. Alien Name: Lates Niloticus Common Name: Nile Perch Type: Fish Cause: Human Introduction 4. The Nile Perch Case The Nile perch (Lates niloticus) is a species of freshwater fish. It is widespread throughout Africa, being native to the Congo, Nile, Senegal and other river basins. Nile perch have been introduced to many other lakes in Africa but is now considered as one of the world's 100 worst invasive species. The species is of great commercial importance as a food fish. The Nile perch is also popular with sport anglers as it attacks artificial fishing lures and is also raised in aquaculture. The Nile perch was introduced to Lake Victoria in East Africa in the 1950s, and since then it has been fished commercially. It is attributed with causing the extinction or near-extinction of several hundred native species.Alien Name: Lates Niloticus Common Name: Nile Perch Type: Fish Cause: Human Introduction 5. Alien Name: Apis Mellifera Scutellata Common Name: Killer Bee Type: Insect Cause: Human Mistake 6. The Killer Bee The Africanized bee in the western hemisphere descended from 26 Tanzanian queen bees accidentally released by a replacement bee-keeper in 1957 near Rio Claro, Brazil. They are aggressive bees that defend their nest from intruders up to 50 feet away by stinging in the hundreds and chasing intruders up to a mile. They have caused deaths of pets, livestock, and even people, giving them their "killer bee" nickname. People and other animals are usually killed only if they are unable to get away. Its largest impacts are economic and ecological. They affect the beekeeping industry by competing with native bee species, causing them to produce less honey and taking over the bees nest by killing its queen and replacing it with their own.Alien Name: Apis Mellifera Scutellata Common Name: Killer Bee Type: Insect Cause: Human Mistake 7. Alien Name: Heracleum Mantegazzianum Common Name: Giant Hogweed Type: Plant Cause: Human Introduction 8. Giant Hogweed Giant Hogweed (Heracleum mantegazzianum, also giant cow parsley) is a plant in the family Apiaceae, native to the Caucasus Region and Central Asia. It may reach 2-5 m (rarely to 7 m) tall. Many foreign plants were introduced to Europe in the 19th century, It was introduced as an ornamenta l plant. The enormous height and leaf area of the giant hogweed enable plants to overtop most other herbaceous plant species. In dominant stands up to 80% of the incoming light is absorbed by it, such that other light demanding species will be suppressed. Giant Hogweed is a phototoxic plant. Its sap can cause phytophotodermatitis (severe skin inflammations) when the skin is exposed to sunlight or to UV-rays. Children should be kept away from this plant.Alien Name: Heracleum Mantegazzianum Common Name: Giant Hogweed Type: Plant Cause: Human Introduction 9. Alien Name: Bufo Marinus Common Name: Cane toad Type: Amphibian Cause: Human Introduction 10. Cane Toads Originally, cane toads were used to get rid of pests from sugar cane, giving rise to their name. An introduction to Jamaica was made in 1844 in an attempt to reduce the rat population.Despite its failure to control the rodents, the cane toad was introduced to Puerto Rico in the early 20th century in the hope that it would counter a beetle infestation that was ravaging the sugar cane plantations. Since then, the cane toad has become a pest in many host countries, and poses a serious threat to native animals. They will feed on almost any animal and compete with native amphibians for food and breeding habitats. Their toxic secretions are known to cause illness and death in domestic animals that come into contact with them, such as dogs and cats, and wildlife, such as snakes and lizards. When threatened, they are able to squirt the toxic secretion over three feet, causing extreme pain if rubbed into the eyes. Human fatalities have been recorded following ingestion of the eggs or adults.Alien Name: Heracleum mantegazzianum Bufo Marinus Common Name: Giant toad Cane Hogweed Type: Plant Amphibian Cause: Human Introduction 11. Alien Name: Coptotermes Formosanus Common Name: Formosan subterranean termite Type: Insect Cause: Human Activity 12. Super-Termite The Formosan subterranean termite is an invasive species of termite. The Formosan subterranean termite is often nicknamed the super-termite because of its destructive habits. This is because of the large size of its colonies, and the termites' ability to consume wood at a rapid rate. A mature colony can consume as much as 400g of wood a day and severely damage a structure in as little as three months. Because of its population size and foraging range, the presence of colonies poses serious threats to nearby structures These termites are the most economically serious pest in Hawaii, costing residents $100 million a yearAlien Name: Coptotermes Formosanus Common Name: Formosan subterranean termite Type: Insect Cause: Human Activity 13. Alien Name: Sturnus Vulgaris Common Name: Starling Type: Bird Cause: Human Introduction 14. Common Starling / European Starling This species of starling is native to most of temperate Europe and western Asia. It is resident in southern and western Europe and southwestern Asia. It has also been introduced to Australia, New Zealand, North America, and South Africa. Although there are approximately 200 million starlings in North America, they are all descendants of approximately 60 birds (or 100) released in 1890 in Central Park, New York, by Eugene Schieffelin, who was a member of the Acclimation Society of North America reputedly trying to introduce to North America every bird species mentioned in the works of William Shakespeare. European starlings (Sturnus vulgaris) cause damage to agricultural crops. When significant numbers are present starling flocks may descend on fruit and grain crop fields to forage, causing massive damage and can have a heavy economic effect. European starlings are extremely aggressive omnivores, and will compete with native fauna for food.Alien Name: Sturnus Vulgaris Common Name: Starling Type: Bird Cause: Human Introduction