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Stop ballast water invasions

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Stop ballast water invasions

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Stop ballast water invasions

  1. 1. STOP BALLAST WATER INVASIONS Hafez ahmad
  2. 2. Invasive alien species in Bangladesh Species Common name Natural habitat origin Year of introduction Trichogaster pectoralis Siamese gourami Thailand Singapore 1952 Carassius auratus goldfish Europe , Asia Pakistan 1953 Tilapia mossambica Tilapia Africa Thailand 1954 Lebistes reticulatus Guppy s.America Thailand 1957 Cyprinus carpio var. communis Scale carp Temperate Asia ,Europe 1960,1965 Ctenopharygodo n idella Grass carp china Japan. Nepal . Hong Kong 1966,1970,1979 Hypopthalmichty s molitrix Silver carp china Hong Kong . Japan 1969,1970 Tilapia nilotica Nilotica africa Thailand 1975 Puntius gonionotus Rajpunti / thai sarpunti Indonesia .Thailand . Malaysia .Philippines Thailand 1986
  3. 3. Invasive alien species in Bangladesh origin introduction Mylopharyngodon piceus Black carp China China 1983 Clarias gariepinus African magur Africa Thailand 1989 Pangasius sutchi pangas Thailand ,Indonesia Thailand 1990 Pangasius giganticus Giantt pangas Eichhornia crassipes water hyacinth brazil Source: department of fisheries (2001) Invasive Alien Species in South-Southeast AsiaEdited by Nirmalie Pallewatta, Jamie K. Reaser, and Alexis T. Gutierrez.21pages,seaasia-2
  4. 4. The directs threats of invasive species preying on native species  Out-competing native species for food or other resources  Displacement of native species  Causing or carrying disease and parasites  Preventing native species from reproducing or killing their young  Smothering and overgrowth .causing genetic dilution ,hybridization The directs threats of invasive species  changing food webs Decreasing biodiversity destroy the abundance of species  altering ecosystem conditions Changes in nutrients cycles Common invasive species traits include The ability to reproduce both asexually and sexually Fast growth  rapid reproduction High dispersal ability Phenotypic plasticity (the ability to alter one’s growth from to suit current conditions) Tolerance of a wide range of environmental conditions Ability to live off of a wide range of food types Association with human
  5. 5. Ballast water Ballast water is one of the major pathways of biological invasion throughout the world. over 12 billion tons of ballast water is moved across vast coastal and oceanic domains annually .it also poses a serious ecological, economic and health threat through the transfer of invasive aquatic species inadvertently carried in it. Ballast water contains a variety of organisms including bacteria and viruses and the adult and larval stages of the many marine and coastal plants and animals.
  6. 6. Aquatic invasive species Scientific name English name origin Effect area 1 mnemiopsis leidyi comb jellyfish north America 2 Corbicula fluminea Asian clam 3 Eriocheir sinensis Chinese mitten crab 4 Dreissena polymorpha Zebra mussel 5 Carcinus maenas Green crab Eupean North America 6 Rapana venosa Vein rapa whelk North west pacific Mediterranean 7 Clarias gariepinus African catfish africa Asia 8 Anoplolepis gracilipes 9 pomacea canaliculata golden apple snail South America Southeast Asia 10 Memosa pigra American shrub America Thailand 11 Clarias macrocephalus Walking catfish Thailand 12 Cherax quadricarinatus Red claw crayfish Australia Singapore 13 Gymnodinium catenatum (dinoflagellates) Australia Japan 14 Oreochromis niloticus Nile tilapia Singapore 15 Calotes versicolor changeable Singapore
  7. 7. Aquatic invasive species Scientific name English name Origin Affect area 16 Cyprinus carpio Common carp Singapore 17 Mytilopsis sallei mussel Caribbean Singapore 18 Gymnodinium impudicum (dinoflagellates Singapore 19 Brachidontes striatulus (mollusks) India Singapore 20 Yongeichthys virgatulus (fish) Japan Singapore 21 Cryptosporidium parvum (Microbes) 22 Vibrio cholerae cholerae 23 Giardia duodenalis 24 Alexandrium minutum Dinoflagellates Europe 25 Neogobius melanostomus Round goby 26 Hemigrapsus penicillatus Asian pencil crab 27 Rapana venosa Veined welk 28 Hemigrapsus sanguineus Asian shore crab East Asia Europe 29 Palaemon macrodactylus Asian shrimp East Asia North West America 30 Caprella scaura Indian Ocean skeleton shrimp
  8. 8. Most available aquatic invasive species
  9. 9. Aquatic invasive species
  10. 10. Ballast water managementbwm Ballast water management (BWM) BWM methods BWM procedures Education and training BWE BWT Sediment measurement BW isolation Sequentia l method dilution Flow through mechanical filtration separation Reception facilities oxidants Return to origin hydro chlorination carbonation biocides physical chemical Thermal UV irradiation ultrasound electrolysis deoxygenati ng cavitations ozonation
  11. 11. Ballast water treatment methods for specific organisms sizes 0 100 200 300 400 500 600 700 800 900 1000 ballast exchange filtration chemical heat UV light sizes sizes Micro bes ,fish larvae mediu m Large fish
  12. 12. Criteria for Selecting a Treatment Method  Safety of the crew and passengers  Effectiveness at removing target organisms  Ease of operating treatment equipment  Amount of interference with normal ship operations and travel times  Structural integrity of the ship  Size and expense of treatment equipment  Amount of potential damage to the environment  Ease for port authorities to monitor for compliance with regulations

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