Florideophyceae |
Ceramiales |
Delesseriaceae
Environment: milieu / climate zone / depth range / distribution range
Ecology
Epiphytic. Tropical
Indian Ocean: In South Africa and Maldives; Pacific Ocean: In China and Japan, east to Hawaiian Islands including Micronesia and Fiji (Re. 80701).
Length at first maturity / Size / Weight / Age
Maturity: Lm ?  range ? - ? cm Max length : 1.2 cm TL male/unsexed; (Ref. 82093)
Thalli consist of unbranched, lanceolate blades (7-12 mm high and 0.8-2.3 mm broad), attached by means of a small discoid holdfast. Growth takes place from a single apical cell, with a typical type-one apical organisation (i.e. all second order row cells produce third order rows). The midrib remains uncorticated throughout. Tetrasporangial sori form discrete, paired ovate sori close to the midrib, 900-1700 μm long and 400-600 μm wide. Tetrasporangial formation involves the lateral pericentral cells but not the transverse ones. Tetrasporangia, 62-80 μm in diameter, are cut off from second- and third order cell rows as well as from cortical cells, resulting in sporangia that lie in more than one plane of the blade. Spermatangial sori form discrete, somewhat oblique patches scattered over the wings. Female plants produce a single cystocarp on the midrib in the distal region of the blades (Ref. 82093).
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 2024-1)
CITES status (Ref. 108899)
Not Evaluated
Not Evaluated
Threat to humans
Human uses
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Tools
More information
Trophic EcologyFood items
Diet
Food consumption
Ration
Predators
Population dynamicsGrowthAge/SizeLength-weightLength-lengthLength-frequenciesMass conversionRecruitmentAbundance Life cycleReproduction
Maturity
Fecundity
Spawning
Eggs
Egg development
Larvae
Larval dynamics
Human RelatedAquaculture profile
Stamps, Coins Misc.
Internet sources
Estimates based on models
Vulnerability
Low vulnerability (10 of 100).