Florideophyceae |
Gracilariales |
Gracilariaceae
Environment: milieu / climate zone / depth range / distribution range
Ecology
Sessile; depth range 0 - 7 m (Ref. 102160). Tropical
Indo-Pacific, Atlantic Ocean and the Mediterranean.
Length at first maturity / Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Thalli erect, cartilaginous, greenish purple, with a discoid holdfast. Primary and secondary branches prominent, mostly arcuate, terete throughout, slightly constricted at the base. Branching on the main axes generally secund. Terminal branches giving rise to 2 or 3 short, stubby, spinose branchlets at their distal portions. Thalli up to 10 cm in height (Ref. 80758).
Used for human consumption: source of agar; used in wastewater purification; contains growth regulator substances similar to auxin, gibberellin, and cytokinin; used as manure for coconuts and coffee bushes in Hainan, India, and Sri Lanka (Ref. 80758). Grows in shallow subtidal areas attached to coral rocks and fragments, and shells (Ref. 80758).
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Guiry, M.D. and G.M. Guiry. 2009. (Ref. 80701)
IUCN Red List Status
(Ref. 130435: Version 2024-2)
CITES status (Ref. 108899)
Not Evaluated
Not Evaluated
Threat to humans
Human uses
Fisheries: commercial
| FishSource |
Tools
More information
Trophic EcologyFood items (preys)
Diet composition
Food consumption
Predators
Population dynamicsGrowth
Max. ages / sizes
Length-weight rel.
Length-length rel.
Length-frequencies
Mass conversion
Abundance
Life cycleReproduction
Maturity
Fecundity
Spawning
Eggs
Egg development
Larvae
PhysiologyOxygen consumption
Human RelatedStamps, coins, misc.
Internet sources
Estimates based on models
Preferred temperature
(Ref.
115969): 18.9 - 29.3, mean 28 (based on 3744 cells).