|Scientific Name:||Acanthurus reversus|
|Species Authority:||Randall & Earle, 1999|
|Red List Category & Criteria:||Least Concern ver 3.1|
|Assessor/s:||Abesamis, R., Clements, K.D., Choat, J.H., McIlwain, J., Myers, R., Nanola, C., Rocha, L.A., Russell, B. & Stockwell, B.|
|Reviewer/s:||McClenachan, L., Edgar, G. & Kulbicki, M.|
Acanthurus reversus is restricted to the Marquesas (and possibly also the Tuamotus). It is common and abundant at inshore sites and is found in all 10 major islands in the Marquesas. The reef area is estimated to be at least 100,000 km2. The population in Marquesas is estimated to be less than 10,000 people (http://www.polynesia.com/marquesas/population.html, accessed 4 May 2010). It is not targeted in any fishery and is caught incidentally for food. There are no major threats known and its distribution overlaps with Motu One reserve. It is therefore listed as Least Concern.
|Range Description:||Acanthurus reversus is endemic to the Marquesas Islands; a single additional record from Takaroa Atoll in the Tuamotos is probably a vagrant (Randall 2001a).|
Native:French Polynesia (Marquesas)
|FAO Marine Fishing Areas:||
Pacific – eastern central
|Range Map:||Click here to open the map viewer and explore range.|
|Population:||Acanthurus reversus is common and locally abundant.|
|Habitat and Ecology:||Acanthurus reversus occurs on inshore reefs where it is common. It is found solitarily or in small groups.|
There are no major threats known for this species.
Surgeonfishes show varying degrees of habitat preference and utilization of coral reef habitats, with some species spending the majority of their life stages on coral reef while others primarily utilize seagrass beds, mangroves, algal beds, and /or rocky reefs. The majority of surgeonfishes are exclusively found on coral reef habitat, and of these, approximately 80% are experiencing a greater than 30% loss of coral reef area and degradation of coral reef habitat quality across their distributions. However, more research is needed to understand the long-term effects of coral reef habitat loss and degradation on these species' populations. Widespread coral reef loss and declining habitat conditions are particularly worrying for species that recruit into areas with live coral cover, especially as studies have shown that protection of pristine habitats facilitate the persistence of adult populations in species that have spatially separated adult and juvenile habitats (Comeros-Raynal et al. 2012).
|Conservation Actions:||There are no species-specific conservation measures in place for this species. However, Motu One reserve in the northern Marquesan islands, established in 1992, encompasses the whole of the island and reef system of Motu One (Pacific Biodiversity Information Forum accessed 23 September 2010).|
|Citation:||Abesamis, R., Clements, K.D., Choat, J.H., McIlwain, J., Myers, R., Nanola, C., Rocha, L.A., Russell, B. & Stockwell, B. 2012. Acanthurus reversus. In: IUCN 2013. IUCN Red List of Threatened Species. Version 2013.2. <www.iucnredlist.org>. Downloaded on 11 March 2014.|
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