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Diplodus annularis (Linnaeus, 1758)

Annular seabream
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Diplodus annularis   AquaMaps   Data sources: GBIF OBIS
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Image of Diplodus annularis (Annular seabream)
Diplodus annularis
Picture by Patzner, R.

Classificatie / Names Populaire namen | Synoniemen | Catalog of Fishes (gen., sp.) | ITIS | CoL | WoRMS | Cloffa

Actinopterygii (Straalvinnigen) > Perciformes (Perch-likes) > Sparidae (Porgies)
Etymology: Diplodus: Greek, diploos = twice + Greek, odous = teeth (Ref. 45335).  More on author: Linnaeus.

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

; marien; brakwater benthopelagisch; diepteverspreiding 0 - 90 m (Ref. 4781).   Subtropical; 49°N - 27°N, 19°W - 42°E

Verspreiding Landen | FAO regio's | Ecosystems | Voorkomen | Point map | Introducties | 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 / Gewicht / Leeftijd

Maturity: Lm 11.2, range 8 - 19.6 cm
Max length : 27.5 cm TL mannelijk/geslacht niet bekend; (Ref. 115876); common length : 13.0 cm TL mannelijk/geslacht niet bekend; (Ref. 3397); Maximaal gepubliceerd gewicht: 330.00 g (Ref. 115876); Maximaal vermelde leeftijd: 7 jaren (Ref. 26328)

Korte beschrijving Morfologie | Morfometrie

Dorsale stekels (totaal): 11; Dorsale zachte stralen (totaal): 11-13; Anale stekels 3; Anale zachte stralen: 11 - 12

Biologie     Verklarende woordenlijst (b.v. epibenthic)

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 Geslachtsrijpheid | Voortplanting | Kuitschieten | Eieren | Fecundity | Larven

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.

Voornaamste referentie Upload your references | Referenties | Coördinator | Medewerkers

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)

Status op de Rode Lijst van het IUCN (Ref. 120744)

  Niet bedreigd (LC) ; Date assessed: 18 August 2009

CITES (Ref. 115941)

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Gevaarlijk voor mensen

  Harmless





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Estimates of some properties based on models

Preferred temperature (Ref. 115969): 14.8 - 21.1, mean 18.3 (based on 220 cells).
Phylogenetic diversity index (Ref. 82805):  PD50 = 0.5000   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01202 (0.01088 - 0.01328), b=3.07 (3.05 - 3.09), in cm Total Length, based on LWR estimates for this species (Ref. 93245).
Trophic Level (Ref. 69278):  3.6   ±0.0 se; Based on diet studies.
Weerstandsvermogen (Ref. 69278):  Gemiddeld, minimale populatieverdubbelingstijd 1,4-4,4 jaar (K=0.2-0.5; tmax=7; Fecundity=18,000 - 212,000).
Prior r = 0.75, 95% CL = 0.50 - 1.13, Based on 4 stock assessments.
Kwetsbaarheid (Ref. 59153):  Low to moderate vulnerability (27 of 100) .
Prijsklasse (Ref. 80766):   Low.