Proposed changes among non-threatened categories NT, LC, DD and NE in the NT – Vertebrate animals

Definitions

Term	Definition
Near Threatened (NT)	The species does not currently qualify for Critically Endangered, Endangered or Vulnerable when evaluated against the criteria, but is close to qualifying or likely to qualify for a threatened category in the near future.
Least Concern (LC)	Available data indicate the species does not meet IUCN criteria for listing as threatened; the majority of species.
Data Deficient (DD)	Those species for which there is not sufficient data on population size or trend to unambiguously determine the conservation status.
Not Evaluated (NE)	Includes vagrants in the NT and species with uncertain or recently revised taxonomy.
Not Assessed (NA)	Includes introduced species, species for which the only NT records are disputed, and species not found within NT jurisdictional boundary (e.g. marine species recorded nearby in Commonwealth waters).

Summary of proposed changes to listings

Mammals

Common name (Scientific name)	Current TPWCA listing category *	Proposed listing category 2020 *	Justification
Sei Whale (Balaenoptera borealis)	DD	NA	No records within NT waters.
Bryde's Whale (Balaenoptera edeni)	DD	NE	Stranding only (two) in NT. Better considered vagrant.
Blue Whale (Balaenoptera musculus)	DD	NE	Stranding only (two) in NT. Better considered vagrant. National Status is Endangered.
Short-beaked Common Dolphin (Delphinus delphis)	DD	NE	Better considered vagrant.
Short-finned Pilot Whale (Globicephala macrorhynchus)	DD	NE	Better considered vagrant.
Risso's Dolphin (Grampus griseus)	DD	NE	Better considered vagrant.
Dwarf Sperm Whale (Kogia simus)	DD	NE	Better considered vagrant.
Fraser's Dolphin (Kogia simus)	NE	NA	No records within NT waters.
Killer Whale (Orcinus orca)	DD	NE	Better considered vagrant.
Black Wallaroo (Osphranter bernardus)	DD	LC	Reporting rate has increased with use of remote cameras.
Melon-headed Whale (Peponocephala electra)	DD	NE	Better considered vagrant.
Sperm Whale (Physeter macrocephalus)	DD	NE	Better considered vagrant.
Giles' Planigale (Planigale gilesi)	DD	LC	No evidence of significant population declines.
Narrow-nosed Planigale (Planigale tenuirostris)	DD	LC	No evidence of significant population declines.
Red-cheeked Dunnart (Sminthopsis virginiae)	DD	LC	No evidence of significant population declines.
Rough-toothed Dolphin (Steno bredanensis)	DD	NA	Deep sea specialist. No records in NT waters.
Cuvier's Beaked Whale (Ziphius cavirostris)	DD	NE	Better considered vagrant.

* Refer to the IUCN categories

Birds

Common name (Scientific name)	Current TPWCA listing category *	Proposed listing category 2020 *	Justification
Common Noddy (Anous stolidus)	NE	DD	Insufficient data on population size and trend.
Wedge-tailed Shearwater (Ardenna pacifica)	DD	NE	Better considered vagrant.
Long-billed Corella (Cacatua tenuirostris)	NE	NA	Introduced. Only records are of escaped/released pets.
Broad-billed Sandpiper (Calidris falcinellus)	NE	LC	Regular visitor. No indication of significant decline.
Pectoral Sandpiper (Calidris melanotos)	DD	NE	Vagrant (less than 1% global population).
Long-toed Stint (Calidris subminuta)	NE	DD	Insufficient data on population size and trend.
Streaked Shearwater (Calonectris leucomelas)	DD	NE	Better considered vagrant.
Little Ringed Plover (Charadrius dubius)	NE	DD	Insufficient data on population size and trend.
Grey Honeyeater (Conopophila whitei)	DD	LC	Rare, but no evidence of decline
Common Gull-billed Tern (Gelochelidon nilotica)	LC	NE	Insufficient data on occurrence in NT following taxonomic revision.
Matsudaira's Storm-petrel (Hydrobates matsudairae)	DD	NE	Better considered vagrant.
Australian Little Bittern (Ixobrychus dubius)	DD	LC	Bird Action Plan assessed nationally as Least Concern
Yellow-breasted Boatbill (Machaerirhynchus flaviventer)	NE	NA	Doubtful records - more likely a Narcissus Flycather. Vagrant recorded only a couple of times on island territories.
Sooty Tern (Onychoprion fuscata)	NE	LC	Regular visitor.
Arctic Jaeger (Stercorarius parasiticus)	DD	NE	Better considered vagrant.
Pomarine Jaeger (Stercorarius pomarinus)	DD	NE	Better considered vagrant.
Wood Sandpiper (Tringa glareola)	NE	LC	Regular visitor.
Green Sandpiper (Tringa ochropus)	NE	NA	No accepted Australian records. Those from Alice Springs sewerage treatment plant acknowledged as wrong (Wood Sandpiper).
Chestnut-backed Button-quail (Turnix castanotus)	DD	LC	Bird Action Plan assessed nationally as Least Concern.

* Refer to the IUCN categories

Reptiles

Common name (Scientific name)	Current TPWCA listing category *	Proposed listing category 2020 *	Justification
Rough-scaled Death Adder (Acanthophis rugosus)	DD (as A. antarcticus) / NT (as A. praelongus)	NE	Status requires reassessment following taxonomic revision.
Orange-tailed Soil-crevice Skink (Austroablepharus naranjicaudus)	DD	LC	Resident species. No indication of significant decline.
Stout Ctenotus (Ctenotus hebetior)	LC	NA	No records in the NT.
Olive Whipsnake (Demansia olivacea)	DD	LC	No evidence of significant population declines due to cane toads.
Desert Whipsnake (Demansia reticulata)	LC	NA	Taxonomic uncertainty; either D. psammophis or D. reticulata occur in the NT, not both.
Green Tree Snake (Dendrelaphis punctulatus)	DD	LC	No evidence of significant population declines due to cane toads.
King's Dtella (Gehyra koira)	DD	LC	Resident species. No indication of significant decline.
Tree Dtella (Gehyra variegata)	LC	NE	Occurrence in NT uncertain following taxonomic revision.
Geometerical Sea Snake (Hydrophis czeblukovi)	DD	NA	No records within NT waters.
Plain Sea Snake (Hydrophis inornatus)	DD	NA	No records within NT waters.
Macleay's Water Snake (Pseudoferania polylepis)	DD	LC	No evidence of significant population declines due to cane toads.
Kimberley Rock Monitor (Varanus glauerti)	DD	LC	No evidence of significant population declines due to cane toads.
Black-palmed Monitor (Varanus glebopalma)	DD	LC	No evidence of significant population declines due to cane toads.
Spotted Tree Monitor (Varanus scalaris)	DD	LC	No evidence of significant population declines due to cane toads.
Narrow-banded Northern Bandy-bandy (Vermicella multifasciata)	DD	LC	Infrequently detected but no evidence of decline.

* Refer to the IUCN categories

Fish

Common name (Scientific name)	Current TPWCA listing category *	Proposed listing category 2020 *	Justification
Blackfin Scad (Alepes melanoptera)	LC	NA	No records within NT waters.
Bluespotted Maskray (Amphotistius kuhlii)	LC	NA	No records within NT waters.
Bumphead Parrotfish (Bolbometopon muricatum)	DD	NA	No records within NT waters.
Bluelined Rockcod (Cephalopholis formosa)	LC	NA	No records within NT waters.
Six-banded Rockcod (Cephalopholis sexmaculatus)	LC	NA	No records within NT waters.
Flagtail Rockcod (Cephalopholis urodeta)	LC	NA	No confirmed records within NT waters.
Giant Herring (Elops machnata)	LC	NA	No confirmed records within NT waters.
Whitespotted Grouper (Epinephelus caeruleopunctatus)	LC	NA	No confirmed records within NT waters.
Highfin Grouper (Epinephelus maculatus)	LC	NA	No confirmed records within NT waters.
Long-tailed Catfish (Euristhmus lepturus)	LC	NA	No confirmed records within NT waters.
Chest-spot Eviota (Eviota inutilis)	LC	NA	No records within NT waters.
Estuary Stingray (Hemitrygon fluviorum)	DD	NA	No records within NT waters.
Pyramid Butterflyfish (Hemitaurichthys polylepis)	DD	NA	No records within NT waters.
Sharpnose Sevengill Shark (Heptranchias perlo)	DD	NA	No records within NT waters.
Belly-bar Pipefish (Hippichthys spicifer)	DD	NA	No records within NT waters.
Thorny Seahorse (Hippocampus hystrix)	DD	NA	No records within NT waters.
Flatface Seahorse (Hippocampus planifrons)	DD	NA	No records within NT waters.
Indian Ilisha (Ilisha melastoma)	LC	NA	No records within NT waters.
Chinese Emperor (Lethrinus haematopterus)	LC	NA	No records within NT waters.
Longhead Flathead (Leviprora inops)	LC	NA	No records within NT waters.
Blackspot Waspfish (Liocranium praepositum)	LC	NA	No confirmed records within NT waters.
Sea Mullet (Mugil cephalus)	LC	NA	No records within NT waters.
Southern Eagle Ray (Myliobatus australis)	LC	NA	No records within NT waters.
Chevron Blenny (Omobranchus elongatus)	LC	NA	No records within NT waters.
Bluecheek Javelin (Pomadasys argyreus)	LC	NA	No confirmed records within NT waters.
Speckled Goby (Redigobius bikolanus)	LC	NA	No confirmed records within NT waters.
Eastern Eel-goby (Taenioides mordax)	LC	NA	No confirmed records within NT waters

* Refer to the IUCN categories

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