Gracilaria manilaensis, Filiform sea moss : fisheries

Gracilaria manilaensis   Yamamoto & Trono

Filiform sea moss
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drawing shows typical species in Gracilariaceae.

Classification / Names Common names | Synonyms | CoL | ITIS | WoRMS

Florideophyceae | Gracilariales | Gracilariaceae

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

Sessile.  Tropical

Distribution Countries | FAO areas | Ecosystems | Occurrences | Introductions

Pacific Ocean: Philippines.

Length at first maturity / Size / Weight / Age

Maturity: Lm ?  range ? - ? cm

Short description Morphology

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 μm in size. Medullary cells large, 52 to 746 μm in diameter; cell walls 3 to 4.5 μm 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 μm 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 μm 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 μm deep. Tetraspores prominent, sometimes protruding from the cortex, 26.26x18 to 39.25x31.75 μm 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).

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

  Harmless (Ref. 80758)

Human uses

Fisheries: commercial
| FishSource |

Tools

E-book | Field guide

More information

Trophic Ecology
Food items (preys)
Diet composition
Food consumption
Predators
Ecology
Ecology
Population dynamics
Growth
Max. ages / sizes
Length-weight rel.
Length-length rel.
Length-frequencies
Mass conversion
Abundance
Life cycle
Reproduction
Maturity
Fecundity
Spawning
Eggs
Egg development
Larvae
Distribution
Countries
FAO areas
Ecosystems
Occurrences
Introductions
Physiology
Oxygen consumption
Human Related
Stamps, coins, misc.
Outreach
Collaborators
Taxonomy
Common names
Synonyms
Morphology
Pictures
References
References

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

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