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Ameiva corax

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Taxonomy [top]

Kingdom Phylum Class Order Family
ANIMALIA CHORDATA REPTILIA SQUAMATA TEIIDAE

Scientific Name: Ameiva corax
Species Authority: Censky & Paulson, 1992
Common Name(s):
English Censky's Ameiva, Anguilla Black Ameiva, Little Scrub Island Ground Lizard

Assessment Information [top]

Red List Category & Criteria: Vulnerable D2 ver 3.1
Year Published: 2010
Date Assessed: 2009-06-30
Assessor(s): Powell, R. & Mayer, G.C.
Reviewer(s): Böhm, M., Collen, B. & Ram, M. (Sampled Red List Index Coordinating Team)
Contributor(s): De Silva, R., Milligan, H.T., Wearn, O.R., Wren, S., Zamin, T., Sears, J., Wilson, P., Lewis, S., Lintott, P. & Powney, G.
Justification:
Ameiva corax has been assessed as Vulnerable under criterion D2. This species is restricted to an island which has an area of 0.049 km²; from this area, only half is deemed suitable habitat for this species. Although this species has evolved in the presence of tropical hurricanes, it is possible with increased intensity of tropical hurricanes and sea level rise, as a result of climate change in the future, could lead to this species becoming Critically Endangered or Extinct in a short period of time. Monitoring of population numbers is recommended.

Geographic Range [top]

Range Description: This species is endemic to Little Scrub Island (White et al. 2002) off the northeastern tip of Anguilla. The island has a total area of around 0.049 km², less than half of which is habitable (Hodge et al. 2003).
Countries:
Native:
Anguilla
Range Map: Click here to open the map viewer and explore range.

Population [top]

Population: White et al. (2002) described the species as 'quite common' in certain areas of the island and as 'less common' in others.
Population Trend: Unknown

Habitat and Ecology [top]

Habitat and Ecology: This species inhabits dry scrublands. It is quite common in the cactus-dominated vegetation and in the rocky area near the sand patch on the leeward side, but less common in other areas (White et al. 2002). The habitat is food-limited. The lizards are known to climb cacti to eat the fruits and to scavenge fish from seabirds nesting and roosting on the island and to prey on bird eggs (Censky and Powell 2001).
Systems: Terrestrial

Threats [top]

Major Threat(s): Little Scrub Island is not likely to be developed. The very small size of the habitable area on the island renders the population of these lizards vulnerable to stochastic events (e.g, hurricanes). Smith et al. (2005) have noted an increased frequency and intensity to tropical cyclones in the North Atlantic Basin, especially since 1995 (2005: 2). Future climate change impacts of increased storm activity and sea level rise may pose further threats, but these are are not imminent threats, are highly uncertain and are unlikely to lead to very rapid population declines.

Conservation Actions [top]

Conservation Actions: There are no species-specific conservation measures in place for this species. Monitoring of the population numbers of this species is needed because of its restricted distribution to Little Scrub Island.

Citation: Powell, R. & Mayer, G.C. 2010. Ameiva corax. The IUCN Red List of Threatened Species. Version 2014.2. <www.iucnredlist.org>. Downloaded on 26 July 2014.
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