Polychaeta |
Aciculata |
Pilargidae
Environment: milieu / climate zone / Mức độ sâu / distribution range
Sinh thái học
. Subtropical
Northwest and Western Central Pacific: China, Hong Kong, Vietnam and Indonesia.
Length at first maturity / Bộ gần gũi / Weight / Age
Chín muồi sinh dục: 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). Motile carnivore that has a jawed pharynx (Ref. 125872).
Life cycle and mating behavior
Chín muồi sinh dục | Sự tái sinh sản | Đẻ trứng | Eggs | Sự sinh sản | 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.
Zheng, Y., X. Chen, J. Chen, Y. Wang, X. Shen, W. Chen and C. Li 2003 Biological resources and the environment in East China Sea. Scientific Technology Publishing of Shanghai, 835 p. (Tài liệu tham khảo 75927)
IUCN Red List Status
(Tài liệu tham khảo 130435: Version 2025-1)
CITES status (Tài liệu tham khảo 108899)
Not Evaluated
CMS (Tài liệu tham khảo 116361)
Not Evaluated
Threat to humans
Human uses
| FishSource |
Các công cụ
Thêm thông tin
Sinh thái dinh dưỡngFood items (preys)
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Thành phần thức ăn
Các động vật ăn mồi
Population dynamicsSự sinh trưởngMax. ages / sizesLength-weight rel.Length-length rel.Length-frequenciesMass conversionSự phong phú Life cycleSự tái sinh sảnChín muồi sinh dụcSự sinh sảnĐẻ trứngEggsEgg developmentLarvae PhysiologyThành phần ô-xy
Human RelatedStamps, coins, misc.
Các nguồn internet
Estimates based on models