Florideophyceae |
Gigartinales |
Nemastomataceae
Environment: milieu / climate zone / εύρος βάθους / distribution range
Οικολογία
. Tropical
Atlantic Ocean: In Puerto Rico south to Colombia and Venezuela, including the Caribbean, east to the Canary Islands; Indian Ocean: In Oman and South Africa east to Western Australia; Pacific Ocean: In Micronesia and Fiji, east to Easter Island including the Hawaiian Islands.
Length at first maturity / Μέγεθος / Weight / Age
Γεννητική Ωρίμανση: Lm ? range ? - ? cm
The gelatinous thallus is about 3.5 cm high, irregularly branched with numerous short, blunttapering branchlets. The colour is pale pinkish in situ. The thallus is multiaxial, composed of a filamentous medulla and cortex embedded in a gelatinous matrix. The cortical filaments are dichotomously branched, with rectilinear cells, 4-5 μm wide by 8-13 μm long. Gland cells are absent. Carpogonial branches are 3-celled. Auxiliary cells are placed intercalary in cortical filaments and uteriform in shape with a prominent apical bulge. Nutritive cells, grouped per 3-6 in chains 1-3 cells long, are present on the cortical cells immediately below and on the 2 cells distal to the auxiliary cell. The gonimoblast arises apically from the auxiliary cell and not laterally in conjunction with the connecting filament. Male gametophytes were not observed (Ref. 82093).
Predaea weldii is characterised by its rectilinear-shaped cortical cells, the lack of gland cells, the relatively sparse and large nutritive cells and the gonimoblasts, which arise apically from the auxiliary cells (Ref. 82093). Occurs on volcanic rocks at shallow intertidal to subtidal depths (Ref. 80999). Also on coral rubble (Ref. 82093).
Life cycle and mating behavior
Γεννητική Ωρίμανση | Αναπαραγωγή | Γεννοβολία | Eggs | Γονιμότητα | 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. (Αναφ. 80701)
IUCN Red List Status
(Αναφ. 130435: Version 2025-1)
CITES status (Αναφ. 108899)
Not Evaluated
Not Evaluated
Threat to humans
Human uses
| FishSource |
Εργαλεία
Περισσότερες πληροφορίες
Τροφική ΟικολογίαFood items (preys)
Σύσταση δίαιτας
Κατανάλωση τροφής
Θηρευτές
Population dynamicsΑύξηση
Max. ages / sizes
Length-weight rel.
Length-length rel.
Length-frequencies
Mass conversion
Αφθονία
Life cycleΑναπαραγωγή
Γεννητική Ωρίμανση
Γονιμότητα
Γεννοβολία
Eggs
Egg development
Larvae
PhysiologyΚατανάλωση οξυγόνου
Human RelatedStamps, coins, misc.
Διαδικτυακές πηγές
Estimates based on models
Preferred temperature
(Ref.
115969): 24.7 - 27.3, mean 26.3 (based on 20 cells).
