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Gracilaria manilaensis   Yamamoto & Trono

Filiform sea moss
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Classification Common names | Synonyms | CoL | ITIS | WoRMS

Florideophyceae | Gracilariales | Gracilariaceae

Main reference References | Biblio | Coordinator | Collaborators

Guiry, M.D. and G.M. Guiry. 2009. (Ref. 80701)

Size / Weight / Age

Environment

Sessile

Climate / Range

Tropical

Distribution Countries | FAO areas | Ecosystems | Occurrences | Introductions

Pacific Ocean: Philippines.

Short description

Thalli reddish brown to purple in colour, erect, loosely branched, attached to shells and debris by a very small discoid holdfast. Branches 0.8 to 1.9 mm in diameter, terete throughout, slender, gradually tapering towards filiform apices, distinctly constricted at the base; soft and easily broken when fresh. Cortex composed of 1 or 2 layers of spherical to cuboidal cells, 9x4.75 to 13x8.25 ╬╝m in size. Medullary cells large, 52 to 746 ╬╝m in diameter; cell walls 3 to 4.5 ╬╝m thick; cell size transition from medulla to cortex abrupt. Cystocarps semi-globose, unconstricted at the base and distributed on more mature branches, 0.8 to 0.9 mm in diameter. Pericarp consisting of 6 to 10 layers of cells, 103 to 188 ╬╝m thick; outermost cells round to oval and anticlinally arranged, inner layers periclinally arranged, becoming flattened towards the gonimoblast. Nutritive filaments abundant between pericarp and gonimoblast. Carpospores 15 to 20 ╬╝m in diameter, gonimoblast centre composed of few large parenchyma cells. Spermatangial cavities oval, cup-shaped to deep oval (verrucosa type) and 36.5 to 104 ╬╝m deep. Tetraspores prominent, sometimes protruding from the cortex, 26.26x18 to 39.25x31.75 ╬╝m in size. Thalli up to 54 cm in length (Ref. 80758).

Biology     Glossary (e.g. epibenthic)

Consumed by humans as food and as raw material for agar manufacture (Ref. 80758). Grows attached to pebbles, shells and stones on muddy bottoms in shallow nutrient-rich water (Ref. 80758).

IUCN Red List Status (Ref. 114614)

   

CITES status (Ref. 94142)

Not Evaluated

Threat to humans

  Harmless (Ref. 80758)

Human uses

Fisheries: commercial
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More information

Countries
FAO areas
Ecosystems
Occurrences
Introductions
Stocks
Ecology
Diet
Food items
Common names
Synonyms
Predators
Reproduction
Maturity
Spawning
Eggs
Egg development
Age/Size
Growth
Length-weight
Length-length
Morphology
Larvae
Abundance
References
Mass conversion

Internet sources

BHL | BOLD Systems | Check for other websites | Check FishWatcher | CISTI | DiscoverLife | FAO(Publication : search) | GenBank (genome, nucleotide) | GOBASE | Google Books | Google Scholar | Google | ispecies | PubMed | Scirus | FishBase | AlgaeBase | Tree of Life | uBio | uBio RSS | Wikipedia (Go, Search) | Zoological Record

Estimation of some characteristics with mathematical models

Price category (Ref. 80766)