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Transcrição

Invasive Species in Malaysia

Malaysia

Malaysia

  • A tropical rainforest
  • No seasons
  • Rain, constant heat, high humidity
  • Located near the equator

Tropical rainforest

Invasive species in Malaysia

Common name: Golden Apple Snail

Scientific name: Pomacea canaliculata (mollusc)

Native to: Argentina

When, Where & How?

How was it introduced?

  • First detected in 1991 in fishponds in Selangor
  • Was illegally smuggled into the country for commercial rearing purposes
  • Deliberately introduced to uncontained wetland systems in the hope of harvesting the snails for food
  • Isolated areas such as fish ponds, unused tin mines and rice fields

Laying eggs

Effects on the natives

The Impact

  • Easily spread through the extensive networks of irrigation canals
  • A threat to large rice-growing areas where the crop is raised through wet direct seedlings
  • Potential damage could be devastating, as this provides an environment conducive to snail infestations
  • The snail feeds voraciously on young rice seedlings under wet conditions, causing great losses to farmers.

Measures taken

  • Chemical control
  • Duck pasturing
  • Mechanical control

Measures

Snail control

Snails for food

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