Mycteroperca microlepis, Gag : fisheries, gamefish

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Mycteroperca microlepis (Goode & Bean, 1879)

Gag
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Native range | All suitable habitat | Point map | Year 2050
This map was computer-generated and has not yet been reviewed.
Mycteroperca microlepis   AquaMaps   Data sources: GBIF OBIS
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Image of Mycteroperca microlepis (Gag)
Mycteroperca microlepis
Picture by Cox, C.D.

Classificatie / Names Lokale namen | Synoniemen | Catalog of Fishes(Genus, Soort(en)) | ITIS | CoL | WoRMS | Cloffa

> Perciformes/Serranoidei (Groupers) > Epinephelidae (Groupers)
Etymology: Mycteroperca: Greek, mykter, -eros = nose + Greek, perke = perch (Ref. 45335).
More on authors: Goode & Bean.

Environment: milieu / climate zone / depth range / distribution range Ecologie

marien; brak water rifbewoner; oceanodroom (Ref. 51243); diepte 30 - 160 m (Ref. 89707). Subtropical; 40°N - 27°S, 98°W - 38°W (Ref. 5222)

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Western Atlantic: North Carolina, USA (with juveniles occurring as far north as Massachusetts) to the Yucatan Peninsula, Mexico. Rare in Bermuda; one record in Cuba; also reported from eastern Brazil.

Lengte bij maturiteit / Grootte / Gewicht / Leeftijd

Maturity: Lm 63.1, range 51 - ? cm
Max length : 145 cm TL mannelijk / geslacht onbekend; (Ref. 40637); common length : 50.0 cm TL mannelijk / geslacht onbekend; (Ref. 3708); max. gepubliceerd gewicht: 36.5 kg (Ref. 40637); max. gerapporteerde leeftijd: 31 Jaren (Ref. 118445)

Korte beschrijving Morfologie | Morfometrie

Dorsale stekels (totaal): 11; Dorsale zachte stralen (totaal): 16-18; Anale stekels 3; Anale zachte stralen: 10 - 12. Distinguished by the following characteristics: adult females and juveniles are generally brownish grey with dark vermiculations; camouflage phase has 5 dark brown saddles separated by short white bars below the dorsal fin; large males sometimes display a "black-belly" and "black-back" phase; black-belly phase is mostly pale grey, with faint dark reticulations below soft dorsal fin, belly and ventral part of the body above anal fin black, as are margin of the soft dorsal fin, central rear part of caudal fin and rear margins of pectoral and pelvic fins; depth of body contained 3.0-3.5 times in SL; head length 2.5-2.7 times in SL; convex interorbital area; angle of preopercle produced into a rounded lobe bearing enlarged serrae; posterior nostrils of adults much larger than anterior ones; smooth lateral body scales, except those covering pectoral fin (Ref. 89707).

Biologie     Verklarende woordenlijst (bv. epibenthic)

Juveniles occur in estuaries and seagrass beds; adults are usually found offshore on rocky bottom (rarely to 152 m), occasionally inshore on rocky or grassy bottom. It is the most common grouper on rocky ledges in the eastern Gulf of Mexico. Adults are either solitary or in groups of 5 to 50 individuals; feed mainly on fishes, some crabs, shrimps, and cephalopods. Juveniles (less than 20 cm) feed mainly on crustaceans that live in shallow grass beds.

Levenscyclus en paargedrag Maturiteit | Voortplanting | Paaien | Eieren | Fecunditeit | Larven

Indeterminate, multiple spawner (Ref. 86690).

Hoofdreferentie Upload your references | Referenties | Coördinator | Medewerkers

Heemstra, P.C. and J.E. Randall, 1993. FAO Species Catalogue. Vol. 16. Groupers of the world (family Serranidae, subfamily Epinephelinae). An annotated and illustrated catalogue of the grouper, rockcod, hind, coral grouper and lyretail species known to date. Rome: FAO. FAO Fish. Synop. 125(16):382 p. (Ref. 5222)

Status op de Rode Lijst van het IUCN (Ref. 130435)

  Kwetsbaar, zie IUCN Rode Lijst (VU) (A4bd); Date assessed: 21 November 2016

CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Gevaar voor de mens

  Harmless





Gebruik door de mens

Visserij: van groot commercieel belang; sportvis: ja
FAO - visserij: aanvoer; Publication: search | FishSource | Sea Around Us

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Estimates based on models

Preferred temperature (Ref. 123201): 18.3 - 27.1, mean 23.8 °C (based on 123 cells).
Fylogenetische diversiteitsindex (Ref. 82804):  PD50 = 0.5000   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00955 (0.00767 - 0.01189), b=3.04 (3.01 - 3.07), in cm total length, based on LWR estimates for this species (Ref. 93245).
Trofisch niveau (Ref. 69278):  3.7   ±0.4 se; based on diet studies.
Weerstandsvermogen (Ref. 120179):  Gemiddeld, minimale populatieverdubbelingstijd 1,4-4,4 jaar (K=0.12-0.16; tm=3-8; tmax=16; Fec>10,000).
Prior r = 0.51, 95% CL = 0.34 - 0.77, Based on 1 stock assessment.
Fishing Vulnerability (Ref. 59153):  High vulnerability (62 of 100).
Climate Vulnerability (Ref. 125649):  High to very high vulnerability (73 of 100).
Prijsklasse (Ref. 80766):   Very high.
Nutrients (Ref. 124155):  Calcium = 11.5 [6.4, 24.2] mg/100g; Iron = 0.464 [0.235, 0.829] mg/100g; Protein = 19.5 [17.6, 21.1] %; Omega3 = 0.214 [0.122, 0.378] g/100g; Selenium = 24.6 [12.6, 49.8] μg/100g; VitaminA = 38.1 [11.4, 150.0] μg/100g; Zinc = 0.57 [0.38, 0.89] mg/100g (wet weight);