Overview

Comprehensive Description

Description

  Common names: gregory (English), major (English), castañeta (Espanol), jaqueta (Espanol)
 
Stegastes flavilatus (Gill, 1862)


Beaubrummel gregory,     Beabrummel major



Body oval, compressed; 1 pair of nostrils; margin of preopercle serrated; margin of bone under eye serrated, without notch it and the bone before it; mouth small, protrusible; teeth in single row, long and close-set; lower gill rakers 11 (rarely 12); a single continuous dorsal fin, XII, 14 (rarely 15); anal rays II, 12; pectoral rays 22-23 (rarely 24); no projecting short spines at upper and lower base of tail fin; caudal fin bluntly forked; scales are moderately large and rough; body scaled, head largely scaled (snout scaled to nostrils), as are the basal parts of the median fins; lateral-line scales 20; lateral line incomplete, ends under end of dorsal fin base.



Light brown to grey-brown, with blackish scale outlines, head often with violaceous markings; taill fin, rear part of dorsal and anal fins, pelvic fins, and pectoral fins yellowish, although; juveniles  bright yellow with broad blue area on back and upper part of head, also has black ocellated spot at soft dorsal junction.


Size: attains 15 cm.

Inhabits rocky shores.

Depth: 1-38 m.

The central Gulf of California to northern Peru, also the Revillagigedos, Cocos and the Galapagos.   
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Biology

Adults inhabit rocky inshore reefs (Ref. 9334). Omnivorous (Ref. 9334). Oviparous, distinct pairing during breeding (Ref. 205). Eggs are demersal and adhere to the substrate (Ref. 205). Males guard and aerate the eggs (Ref. 205).
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Distribution

Range Description

This species is endemic to the Eastern Pacific, and is found from the central Gulf of California to northern Peru, including the Revillagigedo, Cocos and Galapagos Islands.
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Zoogeography

See Map (including site records) of Distribution in the Tropical Eastern Pacific 
 
Global Endemism: All species, East Pacific endemic, Tropical Eastern Pacific (TEP) endemic

Regional Endemism: All species, TEP endemic, Continent + Island (s), Continent, Island (s)

Residency: Resident

Climate Zone: Northern Subtropical (Cortez Province + Sinaloan Gap), Northern Tropical (Mexican Province to Nicaragua + Revillagigedos), Equatorial (Costa Rica to Ecuador + Galapagos, Clipperton, Cocos, Malpelo), South Temperate (Peruvian Province )
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Eastern Pacific: Baja California, Mexico to Bahia Santa Elena, Ecuador.
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Eastern Pacific.
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Depth

Depth Range (m): 1 (S) - 38 (S)
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Physical Description

Morphology

Dorsal spines (total): 12; Dorsal soft rays (total): 14 - 15; Analspines: 2; Analsoft rays: 12
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Size

Length max (cm): 15.0 (S)
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Size

Maximum size: 100 mm SL
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Max. size

10.0 cm SL (male/unsexed; (Ref. 9334)); max. reported age: 19 years (Ref. 52465)
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Type Information

Type for Stegastes flavilatus
Catalog Number: USNM 3671
Collection: Smithsonian Institution, National Museum of Natural History, Department of Vertebrate Zoology, Division of Fishes
Collector(s): J. Xantus
Locality: Lower California, Cape San Lucas., Baja California Sur, Mexico, Pacific
  • Type:
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Cotype for Stegastes flavilatus
Catalog Number: USNM 50388
Collection: Smithsonian Institution, National Museum of Natural History, Department of Vertebrate Zoology, Division of Fishes
Collector(s): C. Gilbert & et al.
Year Collected: 1896
Locality: Canas, behind Isla Raya., Los Santos Province, Panama, Pacific
  • Cotype:
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Ecology

Habitat

Habitat and Ecology

Habitat and Ecology
This species inhabits rocky inshore reefs (Allen 1991) to depths of 38 m. It can also be found on rocky substrate in mouths of estuaries along the continental coast.

Systems
  • Marine
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Environment

reef-associated; non-migratory; marine; depth range 1 - 10 m (Ref. 9334)
  • Schneider, W. and F. Krupp 1995 Pomacentridae. Castañetas, jaquetas y petacas. p. 1392-1404. In W. Fischer, F. Krupp, W. Schneider, C. Sommer, K.E. Carpenter and V. Niem (eds.) Guia FAO para Identification de Especies para lo Fines de la Pesca. Pacifico Centro-Oriental. 3 Vols. FAO, Rome. (Ref. 9334)   http://www.fishbase.org/references/FBRefSummary.php?id=9334&speccode=11853 External link.
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Depth range based on 43 specimens in 1 taxon.
Water temperature and chemistry ranges based on 1 sample.

Environmental ranges
  Depth range (m): 0.3 - 42
  Temperature range (°C): 24.488 - 24.488
  Nitrate (umol/L): 0.290 - 0.290
  Salinity (PPS): 35.023 - 35.023
  Oxygen (ml/l): 4.879 - 4.879
  Phosphate (umol/l): 0.543 - 0.543
  Silicate (umol/l): 4.062 - 4.062

Graphical representation

Depth range (m): 0.3 - 42
 
Note: this information has not been validated. Check this *note*. Your feedback is most welcome.

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Depth: 1 - 10m.
From 1 to 10 meters.

Habitat: reef-associated.
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Salinity: Marine, Brackish

Inshore/Offshore: Inshore, Inshore Only

Water Column Position: Bottom, Bottom only

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

FishBase Habitat: Reef Associated
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Trophic Strategy

Inhabits rocky inshore reefs (Ref. 9334). Territorial herbivore, feeds on farmed turf-algae within their territories (Ref. 57615).
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Feeding

Feeding Group: Omnivore

Diet: benthic microalgae, mobile benthic crustacea (shrimps/crabs), sessile crustacea, sessile worms
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Life History and Behavior

Life Cycle

Oviparous, distinct pairing during breeding (Ref. 205). Eggs are demersal and adhere to the substrate (Ref. 205). Males guard and aerate the eggs (Ref. 205).
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Reproduction

Egg Type: Benthic, Pelagic larva
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Molecular Biology and Genetics

Molecular Biology

Statistics of barcoding coverage: Stegastes flavilatus

Barcode of Life Data Systems (BOLDS) Stats
Public Records: 1
Specimens with Barcodes: 9
Species With Barcodes: 1
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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
2010

Assessor/s
Allen, G., Robertson, R., Zapata, F. & Barraza, E.

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 is common in many parts of its range. There are no major threats for this species, and no current indication of population decline. It is listed as Least Concern.
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IUCN Red List: Not evaluated / Listed

CITES: Not listed
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Population

Population
This species is common in at least some parts of its range. For example, in the Revillagigedo, Galapagos and Cocos Islands this species is considered rare, but it occurs abundantly along the continental coast.

This fish was studied in Gulf of Papagayo, Costa Rica (Dominici-Arosemena et al. 2005) with a density of 0.05 (±0.05) individuals per m2. At Gulf Dulce, Costa Rica, it had a density of 0.003 (±0.007) individuals per m2 and a relative abundance of 0.071% (Figueroa 2001). Within a five-site-study survey, at Catalinas Islands, this fish could be observed in all sites, with 132 overall observations (Espinoza and Salas 2005). According to Aburto-Oropeza and Balart (2001), S. flavilatus is a common species at Los Islotes, Gulf of California — 0.1-0.01% of total abundance, with an occurrence frequency between 10-30%. In Cabo Pulmo, Mexico, this fish was considered scarce with 0.1-1% of the overall abundance registered (Villarreal-Cavazos et al. 2000). A survey at Gorgona Island coral reefs, Colombia (Rubio 1986), showed that this fish seems to be abundant in sandy bottoms, frequent in coralline while occasional in rocky bottoms and tide-pools. Zapata and Morales (1997), also in the same place, recorded a density of 0.107 (±0.190) individuals per 10 m2, with an observational frequency of 40.6%.

Population Trend
Unknown
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Threats

Major Threats
There are no major threats known for this species. According to Dominici-Arosemena et al. (2005), this is a important aquarium fish in Gulf of Papagayo, Costa Rica; however, localized collecting is highly unhlikely to have significant impact on the population.
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Least Concern (LC)
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Management

Conservation Actions

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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Wikipedia

Stegastes flavilatus

Stegastes flavilatus, commonly known as beaubrummel, is a damselfish of the family Pomacentridae. It is native to the tropical eastern Pacific Ocean, its range extends from Mexico, Baja California and the Gulf of California southwards to the Galapagos Islands and mainland Ecuador. It is found on rocky inshore reefs at depths ranging from 1 to 10 m (3 ft 3 in to 32 ft 10 in).[3]

Status[edit]

Stegastes flavilatus has a wide distribution and is common in many parts of its range, particularly the mainland coast, but less common around the Revillagigedo Islands, the Galapagos and Cocos Islands, and its populations appear to be stable. No particular threats to this species have been identified and the IUCN rates it as being of "Least Concern".[1]

References[edit]

  1. ^ a b Allen, G.; Robertson, R.; Zapata, F.; Barraza, E. (2010). "Stegastes flavilatus". IUCN Red List of Threatened Species. Version 2013.2. International Union for Conservation of Nature. Retrieved 2014-01-08. 
  2. ^ Bailly, Nicolas (2013). "Stegastes flavilatus (Gill, 1862)". World Register of Marine Species. Retrieved 2014-01-08. 
  3. ^ "Stegastes flavilatus (Gill, 1862): Beaubrummel". FishBase. Retrieved 2014-01-08. 
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