Torres Strait and Northern Peninsula Area Priority Pest List

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The Torres Strait and Northern Peninsula Area (NPA) region is a pathway for pests, weeds and diseases. The region is vulnerable from the north and south.

We are developing an agreed list of target pests, weeds and diseases for the Torres Strait and NPA region.

We will use this list to:

  • guide initiatives consistent with the Torres Strait and NPA Biosecurity Strategy
  • guide the priorities of the Torres Strait and NPA Biosecurity Working Group (BWG)
  • target biosecurity measures and resourcing to high impact species that threaten the region.

Provide your feedback

Thank you for helping to score the priority pests and diseases.

Please complete the relevant scoring sheet:


The Torres Strait and Northern Peninsula Area (NPA) region is a pathway for pests, weeds and diseases. The region is vulnerable from the north and south.

We are developing an agreed list of target pests, weeds and diseases for the Torres Strait and NPA region.

We will use this list to:

  • guide initiatives consistent with the Torres Strait and NPA Biosecurity Strategy
  • guide the priorities of the Torres Strait and NPA Biosecurity Working Group (BWG)
  • target biosecurity measures and resourcing to high impact species that threaten the region.

Provide your feedback

Thank you for helping to score the priority pests and diseases.

Please complete the relevant scoring sheet:


  • In this scoring spreadsheet you will assess species for their risk to national environment and/or social amenity. The outcome of this process is a national priority list of exotic species that pose a risk to the Torres Strait and Northern Peninsula Area's natural environment and social amenity.

    When assessing species, use your own knowledge (where possible), and a rapid assessment of literature, to answer the questions. A detailed review of literature is not required.

    Asking expert advice about a species (not within your thematic group) is allowed.

    Candidate organisms

    • Aquatic invasive plants, including:
      • Limnocharis (Limnocharis flava)
      • Water hyacinth (Eichhornia crassipes)
      • Salvinia (Salvinia molesta)
      • Amazonian frogbit (Limnobium laevigatum)
    • Asian green mussel (Perna viridis)
    • Harris' mud crab (Rhithropanopeus harrisii)
    • Invasive fresh water fish, including:
      • Climbing perch (Anabas testudineus)
      • Snakehead (Channa spp.)
      • Tilapia (Oreochromis mossambicus and Tilapia mariae)

    Read the references.

    Step-by-step guide:

    1. Sections 1-3 ask you to select a likelihood category of entry/establishment/spread and a confidence category. For sections 4-5, you will be asked to select a category, an exact numeric score of likely impact, and a confidence category.
    2. Read all the linked explanatory text, tables and figures referenced in the sections. They provide extra information to consider when determining your answer.
    3. Read the linked considerations for each question. These questions and statements will help you frame your thoughts
    4. You can save and return to this survey at any time. Once you submit, you cannot change your answers or comments.
    Complete scoring sheet
    Share on Facebook Share on Twitter Share on Linkedin Email this link
  • In this scoring spreadsheet you will assess species for their risk to national environment and/or social amenity. The outcome of this process is a national priority list of exotic species that pose a risk to the Torres Strait and Northern Peninsula Area's natural environment and social amenity.

    When assessing species, use your own knowledge (where possible), and a rapid assessment of literature, to answer the questions. A detailed review of literature is not required.

    Asking expert advice about a species (not within your thematic group) is allowed.

    Candidate organisms

    • Siam weed (Chromolaena odorata and Chromolaena squalida)
    • Flammable grasses, especially gamba grass (Andropogon gayanus) and thatch grass (Hyparrhenia rufa).
    • Leucaena leucocephala
    • Pond apple (Annona glabra)
    • Spiked pepper (Piper aduncum)
    • Yellow bells (Tecoma stans)
    • Neem tree (Azadirachta indica)
    • Mikania (Mikania micrantha)

    Read the references.

    Step-by-step guide:

    1. Sections 1-3 ask you to select a likelihood category of entry/establishment/spread and a confidence category. For sections 4-5, you will be asked to select a category, an exact numeric score of likely impact, and a confidence category.
    2. Read all the linked explanatory text, tables and figures referenced in the sections. They provide extra information to consider when determining your answer.
    3. Read the linked considerations for each question. These questions and statements will help you frame your thoughts
    4. You can save and return to this survey at any time. Once you submit, you cannot change your answers or comments.
    Complete scoring sheet
    Share on Facebook Share on Twitter Share on Linkedin Email this link
  • In this scoring spreadsheet you will assess species for their risk to national environment and/or social amenity. The outcome of this process is a national priority list of exotic species that pose a risk to the Torres Strait and Northern Peninsula Area's natural environment and social amenity.

    When assessing species, use your own knowledge (where possible), and a rapid assessment of literature, to answer the questions. A detailed review of literature is not required.

    Asking expert advice about a species (not within your thematic group) is allowed.

    Candidate organisms

    • Huanglongbing (Candidatus Liberibacter asiaticus, Candidatus Liberibacter africanus and Candidatus Liberibacter americanus) and its vectors including Asian citrus psyllid (Diaphorina citri)
    • Invasive molluscs, including 
      • Giant African snail (Lissachatina fulica)
      • Rosy wolfsnail (Euglandina rosea)
      • Achatina achatina
      • Archachatina marginata
      • Limicolaria aurora
      • Pomacea canaliculata
      • Bulimulus spp
      • Meghimatium spp.
      • Colosius spp.
      • Cathaica fasciola
      • Acusta despecta
      • Acusta ravida
      • Succinea spp.
    • Leaf miners (Liriomyza spp.)
    • Black sigatoka (Pseudocercospora fijiensis)
    • Fusarium wilt (Panama disease) Fusarium oxysporum f.sp. cubense (Foc)
    • Fruit flies (including Bactrocera dorsalis, Zeugodacus cucurbitae and Bactrocera trivialis)
    • Pathogenic phytoplasmas including Banana wilt associated phytoplasma (BWAP)
    • Citrus canker (Xanthomonas citri subsp. citri)
    • Sugar cane stem borers (Chilo, Sesamia and Scirpophaga spp.)
    • Red Banded Mango Caterpillar (Deanolis sublimbalis)
    • Mango pulp weevil (Sternochetus frigidus)
    • Potato spindle tuber viroid (PTSTVd)
    • Sugarcane smut (Sporisorium scitamineum)
    • Tomato Leaf Curl virus (ToLCV) & Tomato Yellow Leaf Curl virus (TYLCV)
    • Papaya ringspot virus (PRSV-P)
    • Coconut rhinoceros beetle (Oryctes rhinoceros) - Guam biotype
    • BOGIA coconut syndrome (BCS)
    • Taro diseaes including leaf blight (Phytophthora colocasiae), Colocasia bobone disease-associated cytyrhabdovirus (CBDV) and Taro bacilliform virus (TaBV)
    • Capsicum whitefly (Aleurothrixus trachoides)
    • Erythrina gall wasp (Quadrastichus erythrinae)

    Read the references.

    Step-by-step guide

    • Sections 1-3 ask you to select a likelihood category of entry/establishment/spread and a confidence category. For sections 4-5, you will be asked to select a category, an exact numeric score of likely impact, and a confidence category.
    • Read all the linked explanatory text, tables and figures referenced in the sections. They provide extra information to consider when determining your answer.
    • Read the linked considerations for each question. These questions and statements will help you frame your thoughts
    • You can save and return to this survey at any time. Once you submit, you cannot change your answers or comments.
    Complete scoring sheet
    Share on Facebook Share on Twitter Share on Linkedin Email this link
  • In this scoring spreadsheet you will assess species for their risk to national environment and/or social amenity. The outcome of this process is a national priority list of exotic species that pose a risk to the Torres Strait and Northern Peninsula Area's natural environment and social amenity.

    When assessing species, use your own knowledge (where possible), and a rapid assessment of literature, to answer the questions. A detailed review of literature is not required.

    Asking expert advice about a species (not within your thematic group) is allowed.

    Candidate organisms

    • Invasive ants
      • Yellow crazy ant (Anoplolepis gracilipes)
      • Red imported fire ant (Solenopsis invicta)
      • Singapore ant (Trichomyrmex destructor)
      • Tropical fire ant (Solenopsis geminata)
      • Electric ant (Wasmannia auropunctata)
    • Exotic bees (e.g. Apis cerana and Apis mellifera) and associated Varroa spp. Mites (particularly Varroa jacobsonii)

    Step-by-step guide:

    1. Sections 1-3 ask you to select a likelihood category of entry/establishment/spread and a confidence category. For sections 4-5, you will be asked to select a category, an exact numeric score of likely impact, and a confidence category.
    2. Read all the linked explanatory text, tables and figures referenced in the sections. They provide extra information to consider when determining your answer.
    3. Read the linked considerations for each question. These questions and statements will help you frame your thoughts
    4. You can save and return to this survey at any time. Once you submit, you cannot change your answers or comments.
    Complete scoring sheet
    Share on Facebook Share on Twitter Share on Linkedin Email this link
  • In this scoring spreadsheet you will assess species for their risk to national environment and/or social amenity. The outcome of this process is a national priority list of exotic species that pose a risk to the Torres Strait and Northern Peninsula Area's natural environment and social amenity.

    When assessing species, use your own knowledge (where possible), and a rapid assessment of literature, to answer the questions. A detailed review of literature is not required.

    Asking expert advice about a species (not within your thematic group) is allowed.

    Candidate organisms

    • Asian tiger mosquito (Aedes albopictus)
    • Rabies, including Rabies virus, Rabies lyssavirus and Classical rabies virus serotype/genotype 1 (Genus Lyssavirus)
    • Cane toads (Rhinella marina)
    • Japanese Encephalitis
    • Feral mammals, including rats, cats, dogs, pigs and horses
    • Old-world screw worm fly (Chrysomya bezziana)
    • Nipah virus
    • Zika virus
    • Foot and mouth disease
    • African Swine Fever
    • Ehrlichiosis (E. canis)

    Read the references.

    Step-by-step guide

    • Sections 1-3 ask you to select a likelihood category of entry/establishment/spread and a confidence category. For sections 4-5, you will be asked to select a category, an exact numeric score of likely impact, and a confidence category.
    • Read all the linked explanatory text, tables and figures referenced in the sections. They provide extra information to consider when determining your answer.
    • Read the linked considerations for each question. These questions and statements will help you frame your thoughts
    • You can save and return to this survey at any time. Once you submit, you cannot change your answers or comments.
    Complete scoring sheet
    Share on Facebook Share on Twitter Share on Linkedin Email this link