Phaeophyceae |
Dictyotales |
Dictyotaceae
Environment: milieu / climate zone / djupintervall / distribution range
Ekologi
. Tropical
Indian Ocean: South Africa and Tanzania.
Length at first maturity / Size / Weight / Age
Könsmognad: Lm ? range ? - ? cm Max length : 6.0 cm TL hane/ej könsbestämd; (Ref. 82093)
Thalli up to 6 cm high, attached by a small stupose holdfast. Narrow dichotomously branched straps (0.8-1.2 mm) with uniform width throughout the thallus. Smooth margins and surface. Medulla and cortex are uniformly one-layered. Sporangia form a well-defined line in the median part of the straps, but is absent along the margins. Sporangia (80-95 μm in diameter) are borne on a single stalk cell and are not surrounded by an involucrum. Gametangia not observed (Ref. 82093).
Characters defining D. rigida include the erect growth form, the stiff texture and the single stupose holdfast (De Clerck and Coppejans 1999) (Ref. 82093). Collected in pools of the sub-littoral fringe (Ref. 82093).
Life cycle and mating behavior
Könsmognad | Reproduktion | Lek | Eggs | Fecundity | Larvae
Guiry, M.D. and G.M. Guiry 2009 AlgaeBase. World-wide electronic publication, National University of Ireland, Galway. http://www.algaebase.org; searched on 14 April 2009. (Ref. 80701)
IUCN Red List Status
(Ref. 130435: Version 2025-1)
CITES status (Ref. 108899)
Not Evaluated
Not Evaluated
Threat to humans
Human uses
| FishSource |
Verktyg
Ytterligare information
Trophic EcologyFood items (preys)
Födosammansättning
Födointag
Predatorer
Population dynamicsTillväxtMax. ages / sizesLength-weight rel.Length-length rel.Length-frequenciesMass conversionAbundans Life cycleReproduktion
Könsmognad
Fecundity
Lek
Eggs
Egg development
Larvae
PhysiologySyreförbrukning
Human RelatedStamps, coins, misc.
Internet-källor
Estimates based on models
Fishing Vulnerability
Low vulnerability (10 of 100).
