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Phyllurus gulbaru 

Scope: Global
Language: English
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Taxonomy [top]

Kingdom Phylum Class Order Family
Animalia Chordata Reptilia Squamata Carphodactylidae

Scientific Name: Phyllurus gulbaru Hoskin, Couper & Schneider, 2003
Identification information: This species is narrow and cylindrical shaped with a rostral scale partly divided by a midline groove. There are small tubercles on the body with larger tubercles on the base and sides of the tail. Phyllurus gulbaru is grey with irregular dark blotches, a pair of large pale and dark splotches on the hips, and on the tail there are eight pale bands (Wilson and Swan 2008).

Assessment Information [top]

Red List Category & Criteria: Endangered B2ab(iii) ver 3.1
Year Published: 2018
Date Assessed: 2017-06-13
Assessor(s): Hoskin, C.
Reviewer(s): Bowles, P.
Contributor(s): Harrison, N. & Cogger, H.
Facilitator/Compiler(s): De Silva, R., Milligan, H.T., Wearn, O.R., Wren, S., Zamin, T., Sears, J., Lewis, S., Wilson, P., Lintott, P., Powney, G.
Justification:
Phyllurus gulbaru has been listed as Endangered because its estimated extent of occurrence is approximately 12 km², its distribution is severely fragmented, and there is a continuing decline in the extent and quality of its habitat as a result of burning and grazing. The establishment and expansion of protected areas is recommended to reduce the rate of habitat loss occurring within this species' range.
Previously published Red List assessments:

Geographic Range [top]

Range Description:This species is restricted to Patterson Gorge in the southern Paluma Range of northeast Queensland (Hoskin et al. 2003). Hoskin et al. (2003) calculated the estimated extent of occurrence (EOO) for this species as 23 km², although this excluded areas between the localities with no suitable habitat, and its area of occupancy (AOO) as 14 km². Extensive surveys in this region has now identified six subpopulations, which are isolated from one another (C. Hoskin, unpubl.), all in the south Paluma Range west of Townsville (C. Hoskin, submitted). A revised area of occupancy derived from these localities suggests the true area of occupancy may be 10-12 km2.
Countries occurrence:
Native:
Australia (Queensland)
Additional data:
Estimated area of occupancy (AOO) - km2:10-12
Range Map:Click here to open the map viewer and explore range.

Population [top]

Population:There is no population information available for this species. Most of the six localities are distant from one another and exhibit a degree of genetic divergence from one another (C. Hoskin pers. comm. 2017). The population is considered severely fragmented. Densities vary between sites; in two localities the species is found at high densities, and at one very low density (C. Hoskin pers. comm. 2017). Although the population trend is unknown, the extent and quality of habitat has declined at least at two localities (C. Hoskin pers. comm. 2017).
Current Population Trend:Unknown
Additional data:
Population severely fragmented:Yes

Habitat and Ecology [top]

Habitat and Ecology:This species occupies steep rocky habitats inside rainforest. It has been collected from gullies near running water (Hoskin et al. 2003). This species appears to be completely forest dependent (H. Cogger pers. comm. 2010, C. Hoskin pers. comm. 2017).
Systems:Terrestrial
Continuing decline in area, extent and/or quality of habitat:Yes

Use and Trade [top]

Use and Trade: The species is not found in trade but is desirable and might well be targeted by collectors (C. Hoskin pers. comm. 2017).

Threats [top]

Major Threat(s): This rainforest-dependent species is threatened by unmanaged burning and grazing that is severely fragmenting and destroying the remaining forest (Hoskin et al. 2003). This area would have had larger patches of dry rainforest prior to European settlement and remaining forest is now restricted to isolates, although genetic data suggests a degree of isolation dating back several thousand years (Hoskin, submitted). This is prime grazing land, and grazing and attendant fire has accelerated fragmentation (C. Hoskin pers. comm. 2017). Three of the known sites form a cluster near an area of farmland where locals set fires late in the dry season. This has led to hot, uncontrolled fires in recent years that are known to have destroyed rainforest in at least one locality (C. Hoskin pers. comm. 2017). The southernmost locality, which exhibits the lowest density and highest genetic divergence, is also likely to be at risk from fire (C. Hoskin pers. comm. 2017). Collection for the pet trade represents the only major threat to the remaining localities; while collection has not yet been reported, these sites are accessible and the species is desirable in trade (C. Hoskin pers. comm. 2017).

Conservation Actions [top]

Conservation Actions: Patterson Gorge is located just south of the Wet Tropics UNESCO World Heritage site boundary, and only a small fraction of the suitable habitat for this species is protected by Mt. Cataract State Forest (Hoskin et al. 2003). Part of the habitat is now protected within Paluma Range National Park, an extension in part motivated by the conservation requirements of this gecko (C. Hoskin pers. comm. 2017). Effective fire management is recommended, especially in the south of the range. Development of strategies to mitigate the risk from collection, including keeping the specific identity of localities secret, is recommended (C. Hoskin pers. comm. 2017).

Citation: Hoskin, C. 2018. Phyllurus gulbaru. The IUCN Red List of Threatened Species 2018: e.T178371A83325001. . Downloaded on 19 August 2018.
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