AquaNISInformation system on aquatic non-indigenous and cryptogenic species |
Species | Hydroides ezoensis [WoRMS] | |
Authority | Okuda, 1934 | |
Family | Serpulidae | |
Order | Sabellida | |
Class | Polychaeta | |
Phylum | Annelida | |
Synonym (?) | ||
Sub-species level (?) | Not entered |
Native origin (?) | Ocean: Pacific --> Ocean region: NW Pacific |
Life form / Life stage (?) |
References (not structured): Faasse, M. A., Ten Hove, H. A., Paalvast, P. 2020. The Pacific serpulid tube worm Hydroides ezoensis Okuda, 1934 reaches the ports of Rotterdam and Vlissingen (Flushing), the Netherlands (North Sea). Cahiers de Biologie Marine, 61, pp. 415-421. Comments: Life Cycle: Eggs develop into trocophore larva, which later metamorph into juvenile stage (body lengthened), and later develop into adults. |
Sociability / Life stage (?) |
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Reproductive frequency (?) | Iteroparous |
Reproductive type (?) | Sexual Comments: The sexes are separate in this species, and gametes are released into the sea where fertilisation occurs. The worms coordinate their reproductive processes by the production of pheromones which indicate their readiness to breed. The larvae are planktonic and are induced to settle and undergo metamorphosis by chemical cues released by the bacterial biofilm on the substrate. |
Developmental trait (?) | Spawning |
Characteristic feeding method / Life stage (?) |
Comments: H. ezoensis is a filter feeder, extending its crown of tentacles into the water column to catch plankton and organic particles floating past. |
Mobility / Life stage (?) |
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Salinity tolerance range (?) | Venice system: 5. α-Mesohaline [10-18psu] 6. Polymixohaline [18-30psu] 7. Euhaline [30-40psu] References: Cao, S., Liu, R., Li, X., Hao, S., Xu, H., 2013. Effects of salinity on fertility, hatching rate, survival, and metamorphosis in Hydroides ezoensis larvae. Journal of Dalian Fisheries University, 28(2), pp.133-137. Comments: H. e. cannot live at the salinity of less than 10 psu in natural condition. |
Habitat modifying ability potential (?) | Autogenic ecosystem engineers |
Toxicity / Life stage (?) | Not relevant |
Bioaccumulation association (?) | Unknown Comments: Not available. |
Known human health impact? | Not known Comments: Not available. |
Known economic impact? | Not known Comments: Not available. |
Known measurable environmental impact? | Not known Comments: Not available. |
Included in the Target Species list? | Yes References: HELCOM, 2009. Alien Species and Ballast Water [PDF]. Available at: (https://archive.iwlearn.net/helcom.fi/stc/files/shipping/Table_2_Alienspecies_%20lists_2009.pdf) |
Association with vessel vectors (?) | Ballast waters Biofouling References: Link, H., Nishi, E., Tanaka, K., Bastida-Zavala, R., Kupriyanova, E. K., Yamakita, T. 2009. Hydroides dianthus (Polychaeta: Serpulidae), an alien species introduced into Tokyo Bay, Japan. Marine Biodiversity Records, 2, e87. Comments: Hydroides dianthus is most likely to be introduced via ship hull-fouling, but its planktonic larvae mightalso be transported in ballast-water. |
Last update by | Sandra Gečaitė, 2024-07-15 |