Polychaeta |
Phyllodocida |
Nereididae
Environment: milieu / climate zone / depth range / distribution range
Ecology
Benthic. Subtropical
Northwest Pacific: China, Taiwan and Hong Kong.
Length at first maturity / Size / Weight / Age
Maturity: Lm ? range ? - ? cm
Found in sediments with high content of silt and clay. Can also be found in coarser substrate composed of sand and gravel (Ref. 124802). Discretely motile omnivore that uses a jawed pharynx for feeding (Ref. 125928).
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Members of the class Polychaeta are mostly gonochoric (sexual). Mating: Females produce a pheromone attracting and signalling the males to shed sperm which in turn stimulates females to shed eggs, this behavior is known as swarming. Gametes are spawned through the metanephridia or body wall rupturing (termed as "epitoky", wherein a pelagic, reproductive individual, "epitoke", is formed from a benthic, nonreproductive individual, "atoke"). After fertilization, most eggs become planktonic; although some are retained in the worm tubes or burrowed in jelly masses attached to the tubes (egg brooders). Life Cycle: Eggs develop into trocophore larva, which later metamorph into juvenile stage (body lengthened), and later develop into adults.
Paxton, H. and L.M. Chou 2000 Polychaetous annelids from the South China Sea. The Raffles Bulletin of Zoology 8:209-232. (Ref. 82601)
IUCN Red List Status
(Ref. 130435: Version 2025-1)
CITES status (Ref. 108899)
Not Evaluated
Not Evaluated
Threat to humans
Harmless
Human uses
| FishSource |
Tools
More information
Trophic EcologyFood items (preys)
Diet composition
Food consumption
Predators
Population dynamicsGrowthMax. ages / sizesLength-weight rel.Length-length rel.Length-frequenciesMass conversionAbundance Life cycleReproductionMaturityFecunditySpawningEggsEgg developmentLarvae PhysiologyOxygen consumption
Human RelatedStamps, coins, misc.
Internet sources
Estimates based on models
