Portugal country information

Common names: Alcarraz, Sargo-alcorraz
Occurrence: native
Salinity: brackish
Abundance: occasional (usually not seen) | Ref: Veiga, P., J. Ribeiro, J.M.S. Gonçalves and K. Erzini, 2010
Importance: | Ref:
Aquaculture: | Ref:
Regulations: | Ref:
Uses: no uses
Comments: Found in Tagus estuary (Ref. 51031). Recorded from the south and southwest coast (Ref. 85184).
National Checklist: Portugal
Country Information: https://www.cia.gov/library/publications/resources/the-world-factbook/geos/po.html
National Fisheries Authority:
Occurrences: Occurrences Point map
Main Ref: Bauchot, M.-L., 1987
National Database: Portuguese Freshwater Fishes

Common names from other countries

Sparaillon commun, Raspallón, Annular sea bream, ... more

Classification / Names Populärnamn | synonymer | Catalog of Fishes(Släkte, Arter) | ITIS | CoL | WoRMS | Cloffa

> Eupercaria/misc (Various families in series Eupercaria) > Sparidae (Porgies)
Etymology: Diplodus: Greek, diploos = twice + Greek, odous = teeth (Ref. 45335).
More on author: Linnaeus.

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

marina; brackvatten bentopelagisk; djupintervall 0 - 90 m (Ref. 4781). Subtropical; 49°N - 27°N, 19°W - 42°E

Utbredning Länder | FAO områden | Ekosystem | Förekomster | Point map | Utplanteringar | Faunafri

Eastern Atlantic: Canary islands, also found along the coast of Portugal northward to the Bay of Biscay, Mediterranean, Black Sea and Sea of Azov (Ref. 4781).

Length at first maturity / Size / Vikt / Age

Maturity: L_m 11.6, range 8 - 19.6 cm
Max length : 28.0 cm TL hane/ej könsbestämd; (Ref. 124816); common length : 13.0 cm TL hane/ej könsbestämd; (Ref. 3397); publicerad maxvikt: 330.00 g (Ref. 115876); rapporterad maxålder: 17 år (Ref. 124518)

Short description Bestämningsnycklar | Morfologi | Morfometri

Taggstrålar i ryggfenan (totalt) : 11; Mjukstrålar i ryggfenan (totalt) : 11 - 13; Taggstrålar i analfenan: 3; Mjukstrålar i analfenan: 11 - 12.

Inhabit chiefly Zostera seagrass beds but also found on Posidonia beds and sandy bottoms, rarely on rocky bottoms. Carnivorous, feed on worms, crustaceans, mollusks, echinoderms and hydrozoans. The sexes are separated, although these fish are potential hermaphrodites; certain individuals are protandric (Ref. 4781).

Life cycle and mating behavior Maturities | Reproduktion | Spawnings | Egg(s) | Fecundities | Larver

Normally sexes are separate but some individuals are protandrous due to geographical variation in sexual pattern (Ref. 103751). However, histological studies confirm no degenerating functional tissue of one sex (e.g. vitellogenic or later-stage follicles) and no proliferation of tissue of the other sex can be found on this species indicating the absence of sex change. This particular condition is also known as nonfunctional hermaphroditism previously known as rudimentary hermaphroditism (Ref. 91314). Also Ref. 28504.

Main reference Upload your references | referenser | Koordinator | Medarbetare

Bauchot, M.-L. and J.-C. Hureau, 1990. Sparidae. p. 790-812. In J.C. Quero, J.C. Hureau, C. Karrer, A. Post and L. Saldanha (eds.) Check-list of the fishes of the eastern tropical Atlantic (CLOFETA). JNICT, Lisbon; SEI, Paris; and UNESCO, Paris. Vol. 2. (Ref. 3688)

IUCN Red List Status (Ref. 130435)

Least Concern (LC) ; Date assessed: 18 August 2009

CITES (Ref. 128078)

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Threat to humans

Harmless

Human uses

Fiskeri: kommersiell; sportfisk: ja

FAO(fiskeri: produktion; publication : search) | FishSource | Sea Around Us

Ytterligare information

Trophic ecology
Födoslag
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Ecology
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Check for Aquarium maintenance | Check for Species Fact Sheets | Check for Aquaculture Fact Sheets

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Estimates based on models

Preferred temperature (Ref. 115969): 14.8 - 21.1, mean 18.3 (based on 220 cells).

Phylogenetic diversity index (Ref. 82804): PD₅₀ = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].

Bayesian length-weight: a=0.01202 (0.01093 - 0.01323), b=3.07 (3.05 - 3.09), in cm Total Length, based on LWR estimates for this species (Ref. 93245).

Trofisk nivå (Ref. 69278): 3.6 ±0.0 se; based on diet studies.

Resiliens (Ref. 120179): Mellan, lägsta populationsfördubblingstid 1,4-4,4 år (K=0.2-0.5; tmax=7; Fecundity=18,000 - 212,000).

Prior r = 0.54, 95% CL = 0.35 - 0.80, Based on 3 full stock assessments.

Fishing Vulnerability (Ref. 59153): Moderate vulnerability (36 of 100).

Climate Vulnerability (Ref. 125649): Moderate vulnerability (36 of 100).

Price category (Ref. 80766): Low.

Diplodus annularis (Linnaeus, 1758)