Microthrissa moeruensis, Lake Mweru sprat : fisheries

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Microthrissa moeruensis (Poll, 1948)

Lake Mweru sprat
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Microthrissa moeruensis
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Classificatie / Names Populaire namen | Synoniemen | Catalog of Fishes(Genus, Soort(en)) | ITIS | CoL | WoRMS | Cloffa

> Clupeiformes (Herrings) > Clupeidae (Herrings, shads, sardines, menhadens) > Dorosomatinae
Etymology: Microthrissa: Grek, mikros = small + Greek, thrissa, -es = shad (Ref. 45335).
More on author: Poll.

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

; zoetwater pelagisch. Tropical; 6°S - 10°S

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

Africa: endemic to Lake Mweru (Ref. 188, 28136) in Democratic Republic of the Congo (Ref. 47399) and Zambia (Ref. 52959).

Size / Gewicht / Leeftijd

Maturity: Lm ?  range ? - ? cm
Max length : 4.1 cm SL mannelijk/geslacht niet bekend; (Ref. 246)

Korte beschrijving Morfologie | Morfometrie

Dorsale stekels (totaal): 0; Dorsale zachte stralen (totaal): 12-15; Anale stekels 0; Anale zachte stralen: 15 - 22; Wervels: 39 - 41. Diagnosis: Body slender, its depth about 20-25% of standard length; scutes strongly keeled, beginning just behind base of last pectoral fin ray, about 10-12 pre-pelvic and 5-8 post-pelvic scutes; snout rather pointed; lower jaw not or slightly projecting, with small teeth limited to anterior part; pre-maxillae with a single row of 11-24 small conical teeth directed inwards; maxilla slender, its blade a little more than 3 times longer than deep, upper edge a little ridged; posterior supra-maxilla slender, spatulate, with distinct anterior shaft, shaft longer than blade; lower gillrakers 18-20 (Ref. 188, 47399). Also characterized by 33-40 scales in a longitudinal series and anal fin with 15-22 rays (Ref. 47399, 93833). It resembles small Microthrissa congica, which has a much blunter snout and less scales in a longitudinal series, 26-35 vs. 33-40 (Ref. 188, 47399).

Biologie     Verklarende woordenlijst (b.v. epibenthic)

A lacustrine species, but perhaps also in small streams or rivers feeding Lake Mweru (Ref. 188).

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

Voornaamste referentie Upload your references | Referenties | Coördinator | Medewerkers

Gourène, G. and G.G. Teugels, 1989. Révision systématique du genre Microthrissa Boulenger, 1902 des eaux douces africaines (Pisces, Clupeidae). Rev. Hydrobiol. Trop. 22(2):129-156. (Ref. 47399)

Status op de Rode Lijst van het IUCN (Ref. 125652)

  Kwetsbaar, zie IUCN Rode Lijst (VU) (B1ab(v)); Date assessed: 16 February 2009

CITES

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 = 0.5312   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00891 (0.00425 - 0.01868), b=3.04 (2.87 - 3.21), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245).
Trophic level (Ref. 69278):  3.1   ±0.3 se; based on size and trophs of closest relatives
Weerstandsvermogen (Ref. 120179):  Hoog, minimale populatieverdubbelingstijd minder dan 15 maanden (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref. 59153):  Low vulnerability (10 of 100) .
Climate Vulnerability (Ref. 125649):   (0 of 100) .
Prijsklasse (Ref. 80766):   Low.
Nutrients (Ref. 124155):  Calcium = 795 [379, 1,701] mg/100g ; Iron = 4.59 [2.49, 8.22] mg/100g ; Protein = 18.4 [17.1, 19.5] % ; Omega3 = 0.823 [0.292, 2.321] g/100g ; Selenium = 30.4 [10.4, 88.9] μg/100g ; VitaminA = 71.1 [24.0, 223.0] μg/100g ; Zinc = 3.19 [2.00, 5.21] mg/100g (wet weight);