AquaNISInformation system on aquatic non-indigenous and cryptogenic species |
Species | Hesperibalanus fallax [WoRMS] | |
Authority | (Broch, 1927) | |
Family | Archaeobalanidae | |
Order | Sessilia | |
Class | Hexanauplia | |
Phylum | Arthropoda | |
Synonym (?) | Solidobalanus fallax | |
Sub-species level (?) | Not entered |
Native origin (?) | Not entered Comments: West Africa |
Life form / Life stage (?) |
References (not structured): Southward, A. J., Hiscock, K., Kerckhof, F., Moyse, J., Elfimov, A. S. 2004. Habitat and distribution of the warm-water barnacle Solidobalanus fallax (Crustacea: Cirripedia). Journal of the Marine Biological Association of the United Kingdom, 84(6), pp. 1169-1177. |
Sociability / Life stage (?) |
References (not structured): Southward, A. J., Hiscock, K., Kerckhof, F., Moyse, J., Elfimov, A. S. 2004. Habitat and distribution of the warm-water barnacle Solidobalanus fallax (Crustacea: Cirripedia). Journal of the Marine Biological Association of the United Kingdom, 84(6), pp. 1169-1177. |
Reproductive frequency (?) | Iteroparous |
Reproductive type (?) | Sexual References: Korn, O. M., & Elfimov, A. S. 1999. Larval development of a warm-water immigrant barnacle, Solidobalanus fallax (Cirripedia: Archaeobalanidae) reared in the laboratory. Journal of the Marine Biological Association of the United Kingdom, 79(6), pp. 1039-1044. Comments: S. fallax is a hermaphroditic (both sexes in one individual) sessile, warm-water barnacle. |
Developmental trait (?) | Spawning Comments: Brooding individuals have been recorded in British waters in May, and juveniles found in October and November. It is thought that larval development and settlement may occur until December. Larval development includes six naupliar and one cyprid stage. Development to the cyprid stage is reported to take eight days at 25 °C. |
Characteristic feeding method / Life stage (?) |
|
Mobility / Life stage (?) |
References (not structured): Hosie, A.M. 2008. Hesperibalanus fallax A barnacle. In Tyler-Walters H. Marine Life Information Network: Biology and Sensitivity Key Information Reviews, [on-line]. Plymouth: Marine Biological Association of the United Kingdom. [cited 12-08-2024]. Available from: https://www.marlin.ac.uk/species/detail/2304 Comments: H. fallax is typically epibiotic on a wide range of organisms including other crustaceans, hydroids, algae and molluscs. It has also been recorded from man-made objects such as plastics and lobster pots. |
Salinity tolerance range (?) | Unknown Comments: Not available. |
Habitat modifying ability potential (?) | Autogenic ecosystem engineers |
Toxicity / Life stage (?) | Not relevant |
Bioaccumulation association (?) | Unknown Comments: Not available. |
Known human health impact? | Known Comments: Harmless. |
Known economic impact? | Known References: Department of Agriculture, Water and the Environment, 2020. Species biofouling risk assessment. Available at: https://www.agriculture.gov.au/sites/default/files/sitecollectiondocuments/animal-plant/pests-diseases/marine-pests/biofouling-consult/species-biofouling-risk-assessment.pdf [Accessed 11 August 2024]. Comments: S. fallax is a nuisance fouler on commercial maritime structures including wharves, jetties and buoys, as well as biofouling on vessel hulls. As a biofouling barnacle, it is inferred to block seawater intakes for industrial (e.g. power station, factory) cooling systems and to foul mussels and oysters–interfering with aquaculture production. |
Known measurable environmental impact? | Known References: Department of Agriculture, Water and the Environment, 2020. Species biofouling risk assessment. Available at: https://www.agriculture.gov.au/sites/default/files/sitecollectiondocuments/animal-plant/pests-diseases/marine-pests/biofouling-consult/species-biofouling-risk-assessment.pdf [Accessed 11 August 2024]. Comments: S. fallax settles on biogenic substrate including algae, molluscs, crustaceans and the habitat-forming sea-fan Eunicella verrucosa where its presence is inferred to cause negative impacts by overgrowth and smothering. |
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 [Accessed 1 July 2024]. |
Association with vessel vectors (?) | Biofouling References: Southward, A. J., Hiscock, K., Kerckhof, F., Moyse, J., Elfimov, A. S. 2004. Habitat and distribution of the warm-water barnacle Solidobalanus fallax (Crustacea: Cirripedia). Journal of the Marine Biological Association of the United Kingdom, 84(6), pp. 1169-1177. Comments: This barnacle does not settle on rocks, but primarily lives attached to biological substrata including macroalgae, sea-fans, mollusc shells and crabs. It also settles on plastic bags, nets ropes and lobster pots. It occurs subtidally, from seven to 220 metres depth. |
Molecular information | Available NCBI (https://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?term=Hesperibalanus+fallax) |
Last update by | Sandra Gečaitė, 2024-08-12 |