|Scientific Name:||Acanthurus thompsoni|
|Species Authority:||(Fowler, 1923)|
Acanthurus philippinus Herre, 1927
Hepatus philippinus (Herre, 1927)
Hepatus thompsoni Fowler, 1923
Teuthis thompsoni (Fowler, 1923)
|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 thompsoni is widespread, common and abundant in most parts of its range. It is caught incidentally and occasionally found in fish markets. Its distribution overlaps with a number of marine protected areas in parts of its range. It is therefore listed as Least Concern. We recommend monitoring of the harvest levels and population status of this species.
|Range Description:||Acanthurus thompsoni is widespread in the Indo-Pacific, found from East Africa to the Hawaiian Islands and Pitcairn Islands, northwards to Kochi Prefecture, Japan, southwards to the Great Barrier Reef, Australia and New Caledonia. It was recorded from Rowley Shoals (Allen and Russell 1986).|
Native:American Samoa (American Samoa); Australia; Bangladesh; British Indian Ocean Territory; Brunei Darussalam; Christmas Island; Cocos (Keeling) Islands; Comoros; Cook Islands; Disputed Territory (Paracel Is., Spratly Is.); Fiji; French Polynesia; French Southern Territories (Mozambique Channel Is.); Guam; India (Andaman Is., Nicobar Is.); Indonesia; Japan; Kenya; Kiribati (Gilbert Is., Kiribati Line Is., Phoenix Is.); Madagascar; Malaysia; Maldives; Marshall Islands; Mauritius; Mayotte; Micronesia, Federated States of ; Mozambique; Myanmar; Nauru; New Caledonia; Niue; Northern Mariana Islands; Palau; Papua New Guinea; Philippines; Pitcairn; Réunion; Samoa; Seychelles; Singapore; Solomon Islands; South Africa; Sri Lanka; Taiwan, Province of China; Tanzania, United Republic of; Thailand; Timor-Leste; Tokelau; Tonga; Tuvalu; United States (Hawaiian Is.); United States Minor Outlying Islands (Howland-Baker Is., Johnston I., Midway Is., US Line Is., Wake Is.); Vanuatu; Viet Nam; Wallis and Futuna; Yemen
|FAO Marine Fishing Areas:||
Indian Ocean – eastern; Indian Ocean – western; Pacific – eastern central; Pacific – northwest; Pacific – southwest; Pacific – western central
|Range Map:||Click here to open the map viewer and explore range.|
Acanthurus thompsoni is common and abundant in most of its range. It was recorded as occasional in terms of relative abundance in the northern Bismarck Sea, Papua New Guinea (Allen 2009). It is moderately common in Milne Bay Province, Papua New Guinea and Raja Ampat, Indonesia. It is usually seen over steep drop-offs (Allen 2003, 2003b). It is common in the American Samoa National Park (National Park of Samoa Checklist of Fishes, accessed 21 April 2010). It is common in the Philippines (S. Conales, Jr. and C. Nanola pers. comm. 2010). This species is collected as an aquarium fish in West Hawaii. The total number of individuals caught from FY 2005-2009 was 1,143 with a total value of $2,247 (Walsh et al. 2010).
In Kenya, landings during 1978-2001 for families that are less important in commercial catches (e.g., scarinae and Acanthuridae) showed rising catches (1978-1984) followed by a general decline during the 1990s (Kaunda-Arara et al. 2003).
|Habitat and Ecology:||Acanthurus thompsoni is found near steep drop-offs (Brown and Allen 2008). It feeds on zooplankton well above the bottom, or away from the wall in drop-offs. It is reported to occur as deep as 75 m (Chave and Mundy 1994), it is generally seen in less than 30 m and may occur in as little as 4 m (Randall 2001a). The sexes are separate among the acanthurids and there is no evidence of sexual dimorphism (Reeson 1983).|
|Use and Trade:||Acanthurus thompsoni is a minor component of the aquarium trade (Global Marine Aquarium Database accessed 19 March 2010). It sells for $49.95 to $74.95 per fish depending on size (bluezooaquatics.com accessed 13 April 2010). It is a targeted food fish in western Thailand (Allen 2005). It is not targeted in the Philippines but occasionally found in fish markets.|
There are indications of localized population declines from fishing in Kenya.
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, its distribution overlaps several marine protected areas within its range.|
Allen, G.R. 2003. Appendix 5. List of the reef fishes of Milne Bay Province, Papua New Guinea. In: G.R. Allen, J. P. Kinch, S.A. McKenna, and P. Seeto (eds), A Rapid Marine Biodiversity Assessment of Milne Bay Province, Papua New Guinea–Survey II (2000), pp. 172. Conservation International, Washington, DC, USA.
Allen, G.R. 2003b. Appendix 1. List of the Reef Fishes of the Raja Ampat Islands. In: R. Donnelly, D. Neville and P.J. Mous (eds), Report on a rapid ecological assessment of the Raja Ampat Islands, Papua, Eastern Indonesia, held October 30 – November 22, 2002. The Nature Conservancy - Southeast Asia Center for Marine Protected Areas, Sanur, Bali.
Allen, G.R. 2009. Coral Reef Fish Diversity. In: R. Hamilton, A. Green and J. Almany (eds), Rapid Ecological Assessment: Northern Bismarck Sea, Papua New Guinea. Technical Report of survey conducted August 13 to September 7, 2006, The Nature Conservancy.
Allen, G.R. and Russell, B.C. 1986. Fishes (of Rowley Shoals - Scott Reef). Records of the Western Australian Museum Supplement No. 25: 75-103.
Allen, M. 2005. A post-tsunami assessment of coral reef fin-fish resources on the Andaman Sea coast of Thailand. In: Allen, G.R. and G.S. Stone (eds), Rapid Assessment Survey of Tsunami-affected Reefs of Thailand. Final Technical Report. November 15, 2005.
Bluezooaquatics.com. 2010. Thompson's Surgeonfish. Available at: http://www.bluezooaquatics.com/productDetail.asp?did=1&cid=287&pid=862. (Accessed: 13 April).
Brown, D.P. and Allen, G.R. 2008. GIS derived spatial analysis as a tool to predict nearshore coral reef fish species presence in American Samoa. Proceedings of the 11th International Coral Reef Symposium. Session number 17: 4. Ft. Lauderdale, Florida.
Chave, E.H. and Mundy, B.C. 1994. Deep-sea benthic fish of the Hawaiian Archipelago, Cross Seamount, and Johnston Atoll. Pacific Science 48: 367-409.
Comeros-Raynal, M.T., Choat, J.H., Polidoro, B., Clements, K.D., Abesamis, R., Craig, M.T., Lazuardi, M.E., McIlwain, J., Muljadi, A., Myers, R.F., et al.. 2012. The likelihood of extinction of iconic and dominant components of coral reefs: the parrotfishes and surgeonfishes. PLoS ONE http://dx.plos.org/10.1371/journal.pone.0039825.
Global Marine Aquarium Database. 2010. Species Trade Details. Available at: http://www.unep-wcmc.org/GMAD/species.cfm. (Accessed: March 19).
IUCN. 2012. IUCN Red List of Threatened Species (ver. 2012.2). Available at: http://www.iucnredlist.org. (Accessed: 17 October 2012).
Kaunda-Arara, B., Rose, G.A., Muchiri, M.S. and Kaka, R. 2003. Long-term Trends in Coral Reef Fish Yields and Exploitation Rates of Commercial Species from Coastal Kenya. Western Indian Ocean Journal of Marine Science 2(2): 105-116.
National Park of American Samoa. 2008. Fishes of National Park of American Samoa Checklist of Fishes Family Name Listing. Available at: http://www.botany.hawaii.edu/basch/uhnpscesu/htms/npsafish/family/acanthur.htm. (Accessed: 21 April).
Randall, J.E. 2001a. Surgeonfishes of the world. Mutual Publishing and Bishop Museum Press, Hawai'i, Honolulu, Hawaii.
Reeson, P.H. 1983. The biology, ecology and bionomics of the surgeonfishes, Acanthuridae. In: J.L. Munro (ed.), Caribbean coral reef fishery resources, pp. 178-190.
Walsh, W., Cotton, S., Carman, B., Livnat, L., Osada, K., Barnett, C., Tissot, B., Stevenson, T., Wiggins, C., Tarnas, D., Bourdon, K. and Peck, S. 2010. Report on the Findings and Recommendations of Effectiveness of the West Hawaii Regional Fishery Management Area. Department of Land and Natural Resources State of Hawaii, State of Hawaii.
|Citation:||Abesamis, R., Clements, K.D., Choat, J.H., McIlwain, J., Myers, R., Nanola, C., Rocha, L.A., Russell, B. & Stockwell, B. 2012. Acanthurus thompsoni. The IUCN Red List of Threatened Species. Version 2015.2. <www.iucnredlist.org>. Downloaded on 01 July 2015.|
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