Mycteroperca microlepis, Gag : fisheries, gamefish

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Mycteroperca microlepis (Goode & Bean, 1879)

Gag
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Mycteroperca microlepis   AquaMaps   Data sources: GBIF OBIS
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Image of Mycteroperca microlepis (Gag)
Mycteroperca microlepis
Bild av Cox, C.D.


US America (contiguous states) territory information

Common names: Charcoal belly, Gag, Grouper
Occurrence: native
Salinity: marine
Abundance: | Ref:
Importance: commercial | Ref: Heemstra, P.C. and J.E. Randall, 1993
Aquaculture: | Ref:
Regulations: | Ref:
Uses: gamefish: yes;
Comments: Juveniles occur as far as Massachusetts. One of the most important groupers in the sport and commercial fisheries of the southwest coast. An all-tackle record of 32.11 kg for this species, caught off Destin, Florida, was published in the 1990 World Record Game Fishes. Also Ref. 2176, 26280, 89707.
National Checklist:
Territory Information: https://www.cia.gov/library/publications/resources/the-world-factbook/geos/us.html
National Fisheries Authority: http://www.nmfs.gov
Occurrences: Occurrences Point map
Main Ref: Heemstra, P.C. and J.E. Randall, 1993
National Database:

Common names from other countries

Klassificering / Namn Populärnamn | synonymer | Catalog of Fishes(Släkte, Arter) | 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.

Miljö: miljö / Klimatzon / djupintervall / distributionsområde Ekologi

marina; brackvatten revassocierade; havsvandrande (Ref. 51243); djupintervall 30 - 160 m (Ref. 89707). Subtropical; 40°N - 27°S, 98°W - 38°W (Ref. 5222)

Utbredning Territorier | FAO områden | Ekosystem | Förekomster | Prickkarta | Utplanteringar | Faunafri

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.

Längd vid första mognad / Storlek / Vikt / Ålder

Könsmognad: Lm 63.1, range 51 - ? cm
Max length : 145 cm TL hane/ej könsbestämd; (Ref. 40637); common length : 50.0 cm TL hane/ej könsbestämd; (Ref. 3708); publicerad maxvikt: 36.5 kg (Ref. 40637); rapporterad maxålder: 31 år (Ref. 118445)

Kort beskrivning Bestämningsnycklar | Morfologi | Morfometri

Taggstrålar i ryggfenan (totalt) : 11; Mjukstrålar i ryggfenan (totalt) : 16 - 18; Taggstrålar i analfenan: 3; Mjukstrålar i analfenan: 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).
Body shape (shape guide): fusiform / normal.

Biologi     Ordlista (t.ex. 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.

Livscykel och parningsbeteende Könsmognad | Reproduktion | Lek | Ägg | Fekunditet | Larver

Indeterminate, multiple spawner (Ref. 86690).

Huvudreferens Ladda upp dina referenser | referenser | Koordinator | Medarbetare

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 på IUCN:s rödlista (Ref. 130435: Version 2025-2 (Global))

  Sårbar (VU) (A4bd); Date assessed: 21 November 2016

CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Hot mot människor

  Harmless





Mänskliga användningsområden

Fiskeri: kommersiellt viktig; sportfisk: ja
FAO - fiskeri: landningar; Publication: search | FishSource | Havet omkring oss

Ytterligare information

Trofisk ekologi
Livsmedelsartiklar (preys)
Födosammansättning
Födointag
Matransoner
Predatorer
Ekologi
Ekologi
Home ranges
Livscykel
Reproduktion
Könsmognad
Mognad/Gills rel.
Fekunditet
Lek
Lekande aggregat
Ägg
Utveckling av ägg
Larver
Larvdynamik
Utbredning
Territorier
FAO områden
Ekosystem
Förekomster
Utplanteringar
BRUVS - Videor
Anatomi
Gälyta
Hjärna
Otolit
Fysiologi
Kroppssammansättning
Näringsämnen
Syreförbrukning
Typ av simning
Simhastighet
Visuella pigment
Ljud från fisk
Sjukdomar & Parasiter
Toxicitet (LC50)
Genetik
Genom
Genetik
Heterozygositet
Ärftlighet
Människorelaterad
Vattenbrukssystem
Vattenbruksprofiler
Avelslinjer
Ciguatera-fall
Frimärken, mynt, diverse.
Uppsökande verksamhet
Medarbetare
referenser
referenser

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Särskilda rapporter

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Uppskattningar baserade på modeller

Önskad temperatur (Ref. 123201): 18.3 - 27.1, mean 23.8 °C (based on 123 cells).
Index för fylogenetisk mångfald (Ref. 82804):  PD50 = 0.5000   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00955 (0.00770 - 0.01184), b=3.04 (3.01 - 3.07), in cm total length, based on LWR estimates for this species (Ref. 93245).
Trofisk nivå (Ref. 69278):  3.7   ±0.4 se; based on diet studies.
Resiliens (Ref. 120179):  Mellan, lägsta populationsfördubblingstid 1,4-4,4 år (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 full stock assessment.
Sårbarhet i fisket (Ref. 59153):  High vulnerability (62 of 100). 🛈
Sårbarhet för klimatet (Ref. 125649):  High to very high vulnerability (73 of 100). 🛈
Priskategori (Ref. 80766):   Very high.
Näringsämnen (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);