|Scientific Name:||Acanthurus bariene|
|Species Authority:||Lesson, 1831|
Acanthurus kingii Bennett, 1835
Acanthurus nummifer Valenciennes, 1835
|Red List Category & Criteria:||Least Concern ver 3.1|
|Assessor/s:||Choat, J.H., Abesamis, R., Clements, K.D., McIlwain, J., Myers, R., Nanola, C., Rocha, L.A., Russell, B. & Stockwell, B.|
|Reviewer/s:||Davidson, L., Edgar, G. & Kulbicki, M.|
Acanthurus bariene is widespread in the western Pacific. It is common and locally abundant in parts of its range. Adults are occasionally found in fish markets and juveniles are harvested for the aquarium trade. Although it is targeted in areas where overfishing and illegal fishing practices are known to occur, adults inhabit deeper waters in depths greater than 10m on outer reef slopes and drop offs. It occurs in a number of marine reserves in parts of its range and there is no indication of population declines through fishing. It is therefore listed as Least Concern.
|Range Description:||Acanthurus bariene is found from the Ryukyu Islands, Japan, southwards to the Great Barrier Reef, Australia (Ashmore Reef, Timor Sea, Western Australia (12°15'S) and Lizard Island, Queensland (14°40'S), eastwards to the Solomon Islands and westwards to the Seychelles. It was recently recorded from Christmas Island (J.H. Choat pers. comm. 2010).|
Native:Australia; British Indian Ocean Territory; Brunei Darussalam; Cambodia; China; Christmas Island; Comoros; Disputed Territory (Paracel Is., Spratly Is.); Fiji; Hong Kong; India (Andaman Is., Nicobar Is.); Indonesia; Japan; Malaysia; Maldives; Mayotte; Micronesia, Federated States of ; Myanmar; Palau; Papua New Guinea; Philippines; Seychelles; Singapore; Solomon Islands; Taiwan, Province of China (Taiwan, Province of China (main island)); Thailand; Timor-Leste; Viet Nam
|FAO Marine Fishing Areas:||
Indian Ocean – eastern; Indian Ocean – western; Pacific – northwest; Pacific – western central
|Range Map:||Click here to open the map viewer and explore range.|
|Population:||Acanthurus bariene was recorded as rare in terms of relative abundance in the northern Bismarck Sea and Milne Bay, Papua New Guinea (Allen 2003, 2009). It is occasionally found in Raja Ampat (Allen 2003b). It is common and locally abundant in the Philippines (C. Nanola pers. comm. 2010).|
|Habitat and Ecology:||
Acanthurus bariene is generally found in depths greater than 10 m and extending to at least 50 m on outer reef slopes and drop offs. It is usually seen as solitary individuals grazing on reefs or compact sand surfaces and is relatively easy to approach underwater (Randall 2001). It is found singly or in pairs. It feeds on algal film on bare rocks and sand. Juveniles are found in shallow protected reefs, usually between soft coral, in 0.2-3 m depth (Lieske and Myers 1994). It is classified as a grazer/detritivore (J.H. Choat and D.R. Bellwood pers. obs. in Green and Bellwood 2009). A. bariene was found to be confined to deeper sandstone reefs in Bar Reef Marine Sanctuary (BRMS), northwestern Sri Lanka (Ohman et al. 1997).
The sexes are separate among the acanthurids and there is no evidence of sexual dimorphism (Reeson 1983).
The range of this species overlaps the Coral Triangle where it is a targeted food fish. It is found in an area with known prevalence of illegal fishing practices and overfishing.
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. Its distribution overlaps several marine protected areas in parts of its range.|
Allen, G.R. 2003. Appendix 5. List of the reef fishes of Milne Bay Province, Papua New Guinea. In: Allen, G. R., 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: Donnelly, R., 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: Hamilton, R., 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, 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.
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.
Green, A.L. and D.R. Bellwood. 2009. Monitoring functional groups of herbivorous reef fishes as indicators of coral reef resilience ? A practical guide for coral reef managers in the Asia Pacific region. IUCN, Gland, Switzerland.
IUCN. 2012. IUCN Red List of Threatened Species (ver. 2012.2). Available at: http://www.iucnredlist.org. (Accessed: 17 October 2012).
Lieske, E. and Myers, R. 1994. Collins Pocket Guide. Coral reef fishes. Indo-Pacific & Caribbean including the Red Sea. Harper Collins Publishers.
Ohman, M.C., Rajasuriya, A. and Olafsson, E. 1997. Reef fish assemblages in north-western Sri Lanka: distribution patterns and influences of fishing practices. Environmental Biology of Fishes 49: 45-61.
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.
|Citation:||Choat, J.H., Abesamis, R., Clements, K.D., McIlwain, J., Myers, R., Nanola, C., Rocha, L.A., Russell, B. & Stockwell, B. 2012. Acanthurus bariene. In: IUCN 2013. IUCN Red List of Threatened Species. Version 2013.2. <www.iucnredlist.org>. Downloaded on 20 April 2014.|