AquaNISInformation system on aquatic non-indigenous and cryptogenic species |
Species | Ocinebrellus inornatus [WoRMS] | |
Authority | (Récluz, 1851) | |
Family | Muricidae | |
Order | Neogastropoda | |
Class | Gastropoda | |
Phylum | Mollusca | |
Synonym (?) | Ocenebra inornata Ocinebrellus inornatus |
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Sub-species level (?) | Not entered |
Native origin (?) | Ocean: Pacific --> Ocean region: NW Pacific |
Life form / Life stage (?) |
References (not structured): Lützen, J., Faasse, M., Gittenberger, A., Glenner, H., Hoffmann, E. 2012. The Japanese oyster drill Ocinebrellus inornatus (Récluz, 1851)(Mollusca, Gastropoda, Muricidae), introduced to the Limfjord, Denmark. Aquatic Invasions, 7(2), pp. 181-191. Comments: Oyster drill The hatched larvae have no planktonic phase and the juveniles settle directly upon the bottom. |
Sociability / Life stage (?) |
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Reproductive frequency (?) | Iteroparous |
Reproductive type (?) | Sexual References: Lützen, J., Faasse, M., Gittenberger, A., Glenner, H., Hoffmann, E. 2012. The Japanese oyster drill Ocinebrellus inornatus (Récluz, 1851)(Mollusca, Gastropoda, Muricidae), introduced to the Limfjord, Denmark. Aquatic Invasions, 7(2), pp. 181-191. Comments: This species has separate sexes and internal fertilization. Eggs are laid in bright yellow bottle-shaped capsules. In NW America they require 1–2 years to become sexually mature and the adult survival rate is 10–30% annually. |
Developmental trait (?) | Brooding References: Lützen, J., Faasse, M., Gittenberger, A., Glenner, H., Hoffmann, E. 2012. The Japanese oyster drill Ocinebrellus inornatus (Récluz, 1851)(Mollusca, Gastropoda, Muricidae), introduced to the Limfjord, Denmark. Aquatic Invasions, 7(2), pp. 181-191. Comments: During the spawning season, the snails congregate in large numbers to copulate before egg-laying. The females produce a cluster of 20–40 bright yellow egg capsules each of which contains several. hundred nurse eggs resulting in the final production of 10–15 embryos. |
Characteristic feeding method / Life stage (?) |
References (not structured): Babaran, D. 2017. Japanese oyster drills (Ocinebrellus inornatus): Exploring Prey Size and Species Preference. Comments: O. inornatus is a predatory marine snail, which feeds on a variety of shelled invertebrates, including mussels, clams, barnacles and other gastropods. |
Mobility / Life stage (?) |
Comments: Because of the low fecundity and the lack of a free-swimming larval stage, the species’ capacity of recruitment and dispersal is consequently rather limited. |
Salinity tolerance range (?) | Venice system: 6. Polymixohaline [18-30psu] 7. Euhaline [30-40psu] References: Lützen, J., Faasse, M., Gittenberger, A., Glenner, H., Hoffmann, E. 2012. The Japanese oyster drill Ocinebrellus inornatus (Récluz, 1851)(Mollusca, Gastropoda, Muricidae), introduced to the Limfjord, Denmark. Aquatic Invasions, 7(2), pp. 181-191. Comments: Like many other oyster drills O. inornatus does not have a high tolerance for low salinity and are uncommon in areas with high freshwater inputs. The aquaria-kept O. inornatus survived at salinities of 23–25 psu for more than two months. |
Habitat modifying ability potential (?) | Unknown Comments: Not available. |
Toxicity / Life stage (?) | Not relevant |
Bioaccumulation association (?) | Unknown Comments: Not available. |
Known human health impact? | Known Comments: Harmless. |
Known economic impact? | Known References: Duckwall, L. 2009. Japanese Oyster Drill Ocinebrellus inornatus. Comments: Oyster drills historically have had devastating impacts on the commercial shellfish industry. |
Known measurable environmental impact? | Known References: Duckwall, L. 2009. Japanese Oyster Drill Ocinebrellus inornatus. Comments: The primary ecological impact of Ocinebrellus inornatus has been on the native Olympia oyster (Ostrea lurida). |
Included in the Target Species list? | No 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 (?) | Unknown Comments: The transportation of oyster shell has resulted in one of the most important pathways for this species. |
Created by | Stephan Gollasch, 2013-08-14 |
Last update by | Sandra Gečaitė, 2024-07-22 |