Florideophyceae |
Halymeniales |
Halymeniaceae
Environment: milieu / climate zone / depth range / distribution range
Ecology
Sessile; depth range 30 - 51 m (Ref. 102158). Tropical
Indo-West Pacific.
Length at first maturity / Size / Weight / Age
Maturity: Lm ? range ? - ? cm
Thalli large and bushy, red-orange or purple in colour, soft cartilaginous and slimy when fresh, attached to rocky substrates by a discoid holdfast. Stipe short, supporting 2 to 4 main axes which are 5 to 15 mm wide, branching pinnately-alternately 4 to 5 times. Branches flattened, their diameter decreases with the increasing degree of branching. Ultimate branchlets slender and linear with acuminate tips, sometimes forcipate. Margins of the fronds serrate, surfaces of the axis provided with few spine-like projections. Cross-section of frond shows ganglion-like cells in the medulla connecting the other cells. Cortex consisting of more than 5 layers of very small ovoid or elongated pigmented cells. Thalli to about 35 cm in height (Ref. 80758).
Used for human consumption; source of carrageenan (Ref. 80758). Commonly found attached to rocks in lower intertidal to upper subtidal areas which are moderately exposed to wave action (Ref. 80758).
Life cycle and mating behavior
Maturity | Reproduction | Spawning | 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
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): 23.3 - 28.7, mean 27.6 (based on 245 cells).
