Predaea weldii

Predaea weldii   Kraft & I.A. Abbott


Native range | All suitable habitat | Point map | Year 2050
This map was computer-generated and has not yet been reviewed.
Predaea weldii  AquaMaps  Data sources: GBIF OBIS
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Classification / Names Common names | Synonyms | CoL | ITIS | WoRMS

Florideophyceae | Gigartinales | Nemastomataceae

Environment: milieu / climate zone / depth range / distribution range Ecology

Sessile.  Tropical

Distribution Countries | FAO areas | Ecosystems | Occurrences | Introductions

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 / Size / Weight / Age

Maturity: Lm ?  range ? - ? cm

Short description Morphology

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).

Biology     Glossary (e.g. epibenthic)

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 Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae

Main reference References | Coordinator | Collaborators

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)

  Not Evaluated 

CITES status (Ref. 108899)

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Threat to humans

Human uses


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Internet sources

BHL | BOLD Systems | CISTI | DiscoverLife | FAO(Publication : search) | Fishipedia | GenBank (genome, nucleotide) | GloBI | Gomexsi | Google Books | Google Scholar | Google | PubMed | AlgaeBase | Tree of Life | Wikipedia (Go, Search) | Zoological Record

Estimates based on models

Preferred temperature (Ref. 115969): 24.7 - 27.3, mean 26.3 (based on 20 cells).

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