Trygonorrhina dumerilii, Southern fiddler ray

Trygonorrhina dumerilii (Castelnau 1873)

Southern fiddler ray
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Trygonorrhina dumerilii
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drawing shows typical fish in this Family.

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

Elasmobranchii (haaien en roggen) (sharks and rays) > Rhinopristiformes (Shovelnose rays) > Trygonorrhinidae (Banjo rays, Fiddler rays)
Etymology: Trygonorrhina: Greek, trygon = a sting ray + Greek, rhinos = nose (Ref. 45335).

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

; marien demersaal; diepteverspreiding 5 - 205 m (Ref. 114953).   Subtropical; 31°S - 41°S, 114°E - 148°E (Ref. 114953)

Verspreiding Landen | FAO regio's | Ecosystems | Voorkomen | Point map | Introducties | Faunafri

Eastern Indian Ocean: endemic to southern Australia.

Length at first maturity / Size / Gewicht / Leeftijd

Maturity: Lm 100.0  range ? - ? cm
Max length : 146 cm TL mannelijk/geslacht niet bekend; (Ref. 114953)

Korte beschrijving Morfologie | Morfometrie

This large shovelnose ray is distinguished by the following characters: suboval disc, short and broadly rounded snout with nostrils partly covered with a large nasal curtain; ridges of small thorns present on mid-line of disc and shoulders; behind interorbital space is an ornate pattern of dark-edged bands without the distinct triangular or diamond-shaped marking (Ref. 114953).

Biologie     Verklarende woordenlijst (b.v. epibenthic)

A benthic species that occurs on continental shelf, mainly found on soft bottoms and seagrasses. Feeds on bottom crustaceans, worms, molluscs and small fishes. Produces litters of 2-5 pups. Maturity size of males at ca. 70 cm TL, females at 89 cm TL; birth size at 21-25 cm TL (Ref. 114953).

Life cycle and mating behavior Geslachtsrijpheid | Voortplanting | Kuitschieten | Eieren | Fecundity | Larven

Voornaamste referentie Upload your references | Referenties | Coördinator | Medewerkers

Last, P.R. and J.D. Stevens, 2009. Sharks and rays of Australia. CSIRO, Australia. 656 p. (Ref. 109431)

Status op de Rode Lijst van het IUCN (Ref. 123251)

  Niet bedreigd (LC) ; Date assessed: 24 March 2015

CITES (Ref. 123416)

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Gevaarlijk voor mensen

  Harmless





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Estimates based on models

Phylogenetic diversity index (Ref. 82805):  PD50 = 0.6250   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00646 (0.00294 - 0.01416), b=2.98 (2.78 - 3.18), in cm total length, based on LWR estimates for this species & (Sub)family-body (Ref. 93245).
Trophic level (Ref. 69278):  3.8   ±0.6 se; based on size and trophs of closest relatives
Generation time: 6.9 ( na - na) years. Estimated as median ln(3)/K based on 2 growth studies.
Weerstandsvermogen (Ref. 120179):  laag, minimale populatieverdubbelingstijd 4,5-14 jaar (Preliminary K or Fecundity.).
Kwetsbaarheid (Ref. 59153):  High vulnerability (65 of 100) .