Anisotremus davidsonii — Details

Xantic Sargo learn more about names for this taxon

Overview

Comprehensive Description

Biology

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Occur in coastal waters, frequently in rocky reefs and occasionally over sandy bottoms (Ref. 9114); often near kelp beds. Juveniles form schools in littoral pools (Ref. 9114). Feed on crustaceans, mollusks and bryozoans. Pelagic spawner (Ref. 56049). Marketed fresh (Ref. 9114).
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Description

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Common names: sargo (English), burro (Espanol), sargo (Espanol)
 
Anisotremus davidsonii (Steindachner, 1876)


Sargo,     Xanthic sargo



Body deep, compressed, back high; head short, blunt; mouth small, low, ~ horizontal, lips fleshy; inside mouth not red; teeth in bands on jaws, outer ones larger, conical, none on center roof of mouth; a pair of conspicuous pores plus a central groove under the chin; preopercle finely serrated; dorsal continuous but deeply notched, 4th  spine longest, XI-XII, 14-16; anal III, 9-11, 2nd  spine long but not greatly so;  pectoral fins relatively short, not, reaching origin of anal; tail forked; scales moderate to large, rough, over entire body and head except front of snout, lips and chin, on membranes between dorsal and anal soft rays; rear lines of scales oblique rows above lateral line; lateral-line scales 54-62.



Overall silvery with yellowish tinge; a prominent blackish bar on side at level of outer part of pectoral fin; upper margin of operculum black; black spot on outer pectoral base; juveniles have 2-3 blackish stripes on the side and lack a spot at the tail fin base.



Size: attains 60 cm, but common to 30 cm.

Habitat: found on rocky, weed-covered reefs, sometimes forming schools.

Depth: 5-61 m.

Central California to central Baja, the Gulf of California.

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Distribution

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Eastern Central Pacific: Santa Cruz in central California, USA to southern Baja California, Mexico; isolated population in the Gulf of California.
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Range Description

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This species is endemic to the Eastern Pacific, and is found from central California to central Baja, and the northwestern and eastern Gulf of California.
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National Distribution

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United States

Origin: Native

Regularity: Regularly occurring

Currently: Present

Confidence: Confident

Type of Residency: Year-round

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Eastern Pacific.
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Depth

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Depth Range (m): 5 (S) - 61 (S)
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Zoogeography

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See Map (including site records) of Distribution in the Tropical Eastern Pacific


 
Global Endemism: All species, East Pacific endemic, TEP non-endemic

Regional Endemism: All species, Tropical Eastern Pacific (TEP) non-endemic, Temperate Eastern Pacific, primarily, California province, primarily, Continent, Continent only

Residency: Vagrant

Climate Zone: North Temperate (Californian Province &/or Northern Gulf of California), Northern Subtropical (Cortez Province + Sinaloan Gap), Northern Tropical (Mexican Province to Nicaragua + Revillagigedos)

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Physical Description

Morphology

Size

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Length max (cm): 60.0 (S)
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Size

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Maximum size: 580 mm TL
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Max. size

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58.0 cm TL (male/unsexed; (Ref. 2850)); max. reported age: 15 years (Ref. 56049)
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Ecology

Habitat

Environment

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demersal; marine; depth range ? - 40 m (Ref. 2850), usually ? - 8 m (Ref. 2850)
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Habitat and Ecology

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Habitat and Ecology
This demersal species occurs in coastal waters, frequently in rocky reefs and occasionally over sandy substrate (McKay and Schneider, 1995), often near kelp beds. Juveniles form schools in littoral pools (McKay and Schneider, 1995).

Systems
  • Marine
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Depth range based on 6 specimens in 1 taxon.
Water temperature and chemistry ranges based on 1 sample.

Environmental ranges
  Depth range (m): 3 - 10
  Temperature range (°C): 20.583 - 20.583
  Nitrate (umol/L): 0.441 - 0.441
  Salinity (PPS): 34.246 - 34.246
  Oxygen (ml/l): 5.165 - 5.165
  Phosphate (umol/l): 0.472 - 0.472
  Silicate (umol/l): 4.140 - 4.140

Graphical representation

Depth range (m): 3 - 10
 
Note: this information has not been validated. Check this *note*. Your feedback is most welcome.
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Habitat Type: Marine

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Depth: 0 - 40m.
Recorded at 40 meters.

Habitat: demersal.
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Salinity: Marine, Marine Only

Inshore/Offshore: Inshore, Inshore Only

Water Column Position: Near Bottom, Bottom, Bottom + water column

Habitat: Reef (rock &/or coral), Reef only, Rocks, Reef associated (reef + edges-water column & soft bottom)

FishBase Habitat: Demersal
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Migration

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Non-Migrant: No. All populations of this species make significant seasonal migrations.

Locally Migrant: No. No populations of this species make local extended movements (generally less than 200 km) at particular times of the year (e.g., to breeding or wintering grounds, to hibernation sites).

Locally Migrant: No. No populations of this species make annual migrations of over 200 km.

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Trophic Strategy

Feeding

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Feeding Group: Carnivore

Diet: mobile benthic crustacea (shrimps/crabs), mobile benthic gastropods/bivalves, sponges/seasquirts/bryozoa
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Life History and Behavior

Life Cycle

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Pelagic spawner (Ref. 56049).
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Reproduction

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Egg Type: Pelagic, Pelagic larva
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Molecular Biology and Genetics

Molecular Biology

Barcode data: Anisotremus davidsonii

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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.

CCTTTATCTAGTATTCGGTGCTTGGGCTGGGATAGTAGGGACAGCCCTGAGCCTGCTCATCCGAGCAGAACTCAGTCAACCGGGCGCCCTCCTCGGAGACGACCAGATTTATAATGTAATTGTTACTGCACACGCATTCGTAATAATTTTCTTTATAGTAATACCAATCCTAATCGGAGGATTCGGAAACTGACTTGTTCCTCTTATGATCGGGGCCCCCGACATGGCATTCCCCCGAATAAACAACATGAGCTTCTGGCTCCTCCCACCCTCCTTCCTCCTCCTCCTTGCCTCTTCAGGCGTAGAGGCCGGAGCCGGTACTGGATGGACAGTCTATCCTCCTTTAGCCGGAAACTTAGCTCATGCTGGGGCATCCGTTGACCTAACAATTTTCTCCCTCCACTTAGCAGGTGTCTCCTCAATTCTTGGGGCAATTAACTTCATCACAACAATTATTAACATGAAACCCCCTGCCATCTCCCAGTACCAGACTCCGCTATTTGTATGATCCGTCCTGGTCACAGCCGTTCTTCTCCTACTTTCTCTTCCAGTTCTTGCAGCCGGCATTACAATGCTCCTCACAGATCGAAATCTAAACACCACCTTCTTCGATCCTGCTGGAGGAGGAGACCCCATTCTCTACCAGCACCTG
-- end --

Download FASTA File
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Statistics of barcoding coverage: Anisotremus davidsonii

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Barcode of Life Data Systems (BOLDS) Stats
Public Records: 5
Specimens with Barcodes: 5
Species With Barcodes: 1
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Conservation

Conservation Status

IUCN Red List Assessment

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Red List Category
LC
Least Concern

Red List Criteria

Version
3.1

Year Assessed
2010

Assessor/s
Allen, G., Robertson, R., Lea, B.

Reviewer/s
Carpenter, K., Polidoro, B., Livingstone, S. (Global Marine Species Assessment Team)

Contributor/s

Justification
This species is widespread in the Eastern Pacific, and common in at least part of its range. There are no known major threats to this species, and no current indication of population decline. It is listed as Least Concern.
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National NatureServe Conservation Status

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United States

Rounded National Status Rank: NNR - Unranked

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NatureServe Conservation Status

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Rounded Global Status Rank: GNR - Not Yet Ranked

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IUCN Red List: Not evaluated / Listed

CITES: Not listed
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Population

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Population
This species is moderately common in southern California.

Population Trend
Unknown
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Threats

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Least Concern (LC)
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Major Threats
There are no major threats known for this species. However, this species is an important sport fish (Riedel et al. 2002).
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Management

Conservation Actions

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Conservation Actions
There are no known conservation measures for this species. However, this species distribution falls partially into a number of Marine Protected Areas in the Eastern Pacific region (WDPA 2006).
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Relevance to Humans and Ecosystems

Benefits

Importance

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fisheries: minor commercial; gamefish: yes; price category: medium; price reliability: very questionable: based on ex-vessel price for species in this family
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