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Overview

Comprehensive Description

Biology

Inhabits coastal to outer reef slopes subject to strong currents. Sometimes in large schools (Ref. 48637). Generally uncommon species found in steep outer reef drop-offs (Ref. 9710). Usually found in waters deeper than 6 m. Solitary or in groups (Ref. 37816).
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Distribution

Range Description

Naso lopezi is found from southern Honshu, Japan, to the Great Barrier Reef and New Caledonia. It is reported from the Similan Islands in the Andaman Sea and Guam. It was recently recorded from Tonga (Randall et al. 2003).
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Western Pacific: southern Honshu, Japan to the Great Barrier Reef and New Caledonia. Reported from the Similan Islands in the Andaman Sea and Guam. Recently recorded from Tonga (Ref. 53797).
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Western Pacific and eastern Indian Ocean.
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Physical Description

Morphology

Dorsal spines (total): 5; Dorsal soft rays (total): 27 - 30; Analspines: 2; Analsoft rays: 26 - 30
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Size

Maximum size: 540 mm FL
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Max. size

60.0 cm SL (male/unsexed; (Ref. 48637))
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Diagnostic Description

Lacks a horn, has numerous black close-set spots on the upper half of its body and tail, and is white ventrally. Body elongate, its depth 3.3 to 3.7 times in SL (Ref 9808).
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Ecology

Habitat

Habitat and Ecology

Habitat and Ecology

Naso lopezi occurs above fore reef slopes and steep escarpments usually in small groups ranging in size from a few individuals to a thousand or more. It sometimes mixes with other schooling Naso species (R.F. Myers pers. comm. 2010). Primary food items include ctenophores and crustaceans. Other food items include algae, diatoms, dinoflagellates and molluscs. It was observed to form feeding schools of a few hundred to a thousand individuals in the Philippines during the daytime. In the early morning and late afternoon it feeds on near the bottom, and in the upper layers of the water at noon and early afternoon (Alcazar and Alcala 1977). The sexes are separate among the acanthurids (Reeson 1983). Acanthurids do not display obvious sexual dimorphism, males assume courtship colours (J.H. Choat pers. comm. 2010).


Systems
  • Marine
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Environment

reef-associated; marine; depth range 6 - 20 m (Ref. 48637)
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Depth range based on 5 specimens in 1 taxon.
Water temperature and chemistry ranges based on 4 samples.

Environmental ranges
  Depth range (m): 6 - 69
  Temperature range (°C): 25.807 - 27.844
  Nitrate (umol/L): 0.678 - 2.654
  Salinity (PPS): 34.486 - 34.562
  Oxygen (ml/l): 4.221 - 4.509
  Phosphate (umol/l): 0.168 - 0.349
  Silicate (umol/l): 3.868 - 6.450

Graphical representation

Depth range (m): 6 - 69

Temperature range (°C): 25.807 - 27.844

Nitrate (umol/L): 0.678 - 2.654

Salinity (PPS): 34.486 - 34.562

Oxygen (ml/l): 4.221 - 4.509

Phosphate (umol/l): 0.168 - 0.349

Silicate (umol/l): 3.868 - 6.450
 
Note: this information has not been validated. Check this *note*. Your feedback is most welcome.

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Molecular Biology and Genetics

Molecular Biology

Statistics of barcoding coverage: Naso lopezi

Barcode of Life Data Systems (BOLDS) Stats
Public Records: 3
Specimens with Barcodes: 8
Species With Barcodes: 1
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Statistics of barcoding coverage: Naso sp.

Barcode of Life Data Systems (BOLDS) Stats
Public Records: 0
Specimens with Barcodes: 7
Species With Barcodes: 1
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Barcode data: Naso lopezi

The following is a representative barcode sequence, the centroid of all available sequences for this species.


There are 2 barcode sequences available from BOLD and GenBank.  Below is a sequence of the barcode region Cytochrome oxidase subunit 1 (COI or COX1) from a member of the species.  See the BOLD taxonomy browser for more complete information about this specimen and other sequences.

ACACGTTGATTCTTTTCGACTAATCACAAAGACATCGGCACCCTTTATCTAGTATTCGGTGCTTGAGCTGGGATGGTAGGCACAGCCTTA---AGCCTACTGATTCGAGCAGAGCTAAGCCAACCAGGCGCCCTCCTCGGAGAT---GACCAAATCTATAATGTAATTGTTACAGCACATGCTTTCGTAATAATTTTCTTTATAGTAATACCAATCATAATCGGAGGATTTGGAAACTGGCTAATTCCACTAATG---ATTGGGGCCCCAGACATGGCCTTCCCCCGAATAAATAACATGAGCTTTTGATTACTTCCTCCCTCTTTCCTTCTCCTCCTTGCATCTTCTGGTGTTGAAGCTGGGGCTGGGACCGGATGAACAGTCTACCCGCCCTTAGCCGGCAACCTAGCACATGCAGGAGCTTCTGTTGATTTG---ACCATCTTTTCCCTTCATCTGGCGGGAATTTCCTCAATTCTAGGTGCAATTAATTTCATCACAACCATTATTAACATGAAACCCCCTGCTATTTCTCAATACCAGACCCCCCTGTTCGTCTGAGCCGTACTAATCACAGCAGTTCTGCTACTCCTCTCCCTTCCAGTTCTTGCTGCT---GGTATTACAATACTTCTTACAGACCGAAATTTAAATACCACCTTCTTCGACCCTGCAGGAGGAGGAGACCCAATTCTTTACCAACACCTCTTCTGATTCTTTGGCCACCCCGAAGTTTACATTCTTATCCTGCCTGGGTTCGGGATAATCTCACACATCGTTGCTTATTACTCCGGCAAAAAA---GAACCTTTCGGCTATATAGGCATGGTTTGAGCAATAATAGCAATCGGCCTCCTGGGCTTCATCGTTTGGGCCCATCACATGTTCACAGTAGGAATGGATGTCGACACTCGTGCTTACTTTACATCCGCCACTATAATTATTGCAATCCCAACTGGTGTTAAAGTCTTTAGCTGACTA---GCGACTCTTCACGGAGGG---TCCATCAAATGAGAGACTCCCCTTCTATGGGCATTGGGCTTCATTTTCCTATTTACAGTAGGAGGGCTGACAGGAATTGTTCTAGCCAACTCCTCCCTAGACATTGTTCTACATGACACATATTACGTAGTAGCCCACTTCCACTATGTT---CTGTCAATAGGAGCCGTATTTGCCATCGTAGCCGCCTTTGTTCACTGATTCCCGCTATTCTCAGGCTATACCCTCCACAGTACTTGAACAAAAATCCACTTTGGAATTATGTTTGTAGGTGTGAACCTAACCTTCTTCCCTCAACATTTCCTTGGCCTAGCTGGAATGCCTCGA---CGTTATTCCGACTACCCCGACGCCTACACT---CTATGAAACACAGTCTCATCAATTGGTTCATTAATTTCCCTTGTAGCAGTAATTATGTTCCTGTTTATCATTTGAGAAGCATTTGCTGCTAAACGTGAAGTT---CTTTCCGTGGAACTAACCACAACCAAC
-- end --

Download FASTA File
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Conservation

Conservation Status

IUCN Red List Assessment


Red List Category
LC
Least Concern

Red List Criteria

Version
3.1

Year Assessed
2012

Assessor/s
Abesamis, R., Nanola, C., Stockwell, B., Choat, J.H., Clements, K.D., McIlwain, J., Myers, R., Rocha, L.A. & Russell, B.

Reviewer/s
Edgar, G. & Kulbicki, M.

Contributor/s

Justification
Naso lopezi is widespread in the central and western Pacific. It is a targeted food fish in the Philippines. There are some localized threats from fishing, although there is no data at the moment indicating global population declines. It is found in a number of well-policed marine protected areas. It is therefore listed as Least Concern. We recommend continued monitoring of the harvest levels of this species.
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Population

Population
Naso lopezi is rare in Calamianes Islands, Philippines and Milne Bay Province, Papua New Guinea (Werner and Allen 2000, Allen 2003). It is occasionally found in Raja Ampat, Indonesia (Allen 2003b). It is fairly common in the central Visayas (R. Abesamis, C. Nanola, A. Candido, Conales, S., Jr. and B. Stockwell pers. comm. 2010).

Population Trend
Unknown
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Threats

Major Threats
Naso lopezi is targeted in the Philippines. Localized declines are occurring in parts of its distribution.

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).
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Least Concern (LC)
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Management

Conservation Actions

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.
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Relevance to Humans and Ecosystems

Benefits

Importance

fisheries: commercial; aquarium: commercial
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Wikipedia

Naso lopezi

The elongated unicornfish, Naso lopezi, is a unicornfish from the western Pacific Ocean. It occasionally makes its way into the aquarium trade. It grows to a length of 60 cm (24 in).[1]

References[edit]

  1. ^ Froese, Rainer and Pauly, Daniel, eds. (2008). "Naso lopezi" in FishBase. December 2008 version.
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