AquaNISInformation system on aquatic non-indigenous and cryptogenic species |
Species | Megabalanus coccopoma [WoRMS] | |
Authority | (Darwin, 1854) | |
Family | Balanidae | |
Order | Sessilia | |
Class | Hexanauplia | |
Phylum | Arthropoda | |
Synonym (?) | ||
Sub-species level (?) | Not entered |
Native origin (?) | Not entered Comments: Tropical eastern Pacific coasts of Central and South America |
Life form / Life stage (?) |
Comments: Juveniles to adults are sessile, means that they cannot migrate themselves but be transported with movement of ships or floating materials. On the other hand, larvae can disperse naturally. |
Sociability / Life stage (?) |
Comments: Highly gregarious, settling on disturbed or previously cleared substrates, especially manufactured structures such as buoys and boats. It is a common fouler of boats, ships, buoys, and other manufactured structures. |
Reproductive frequency (?) | Iteroparous |
Reproductive type (?) | Sexual References: Gilg, M. R., Lukaj, E., Abdulnour, M., Middlebrook, M., Gonzalez, E., Turner, R., Howard, R. 2010. Spatio-temporal settlement patterns of the non-native titan acorn barnacle, Megabalanus coccopoma, in northeastern Florida. Journal of Crustacean Biology, 30(1), pp. 146-150. Comments: M. coccopoma, like many other barnacles, is hermaphroditic, but is capable of cross-fertilization. The fertilized eggs are brooded in the mantle cavity, sometimes for several months, and are released as nauplius larvae with three pairs of appendages (Barnes 1983). The nauplii feed in the plankton and go through five successive molts, spending 6 to 20 days (about 3 weeks) in the water column, before molting into a non-feeding cypris stage, covered with a pair of chitinous shells. |
Developmental trait (?) | Spawning References: Gilg, M. R., Lukaj, E., Abdulnour, M., Middlebrook, M., Gonzalez, E., Turner, R., Howard, R. 2010. Spatio-temporal settlement patterns of the non-native titan acorn barnacle, Megabalanus coccopoma, in northeastern Florida. Journal of Crustacean Biology, 30(1), pp. 146-150. |
Characteristic feeding method / Life stage (?) |
Comments: It is a suspension feeder, means that by extending its cirri (modified legs) from the aperture at the top of the shell, it can catch plankton. |
Mobility / Life stage (?) |
Comments: They are key components in many marine ecosystems, and found abundantly in the upper rocky intertidal regions. Besides the rocky regions, they tend to settle on new man-made structures such as cables, buoys and the hulls of boats, and also on the shells of bivalve and molluscs. |
Salinity tolerance range (?) | Exact range: 2 - 42 References: Spinuzzi, S., Schneider, K. R., Walters, L. J., Yuan, W. S., Hoffman, E. A. 2013. Tracking the distribution of non-native marine invertebrates (Mytella charruana, Perna viridis and Megabalanus coccopoma) along the south-eastern USA. Marine Biodiversity Records, 6, e55. Comments: M. coccopoma was occupied sites with salinities ranging from 2 to 42 ppt. |
Habitat modifying ability potential (?) | Autogenic ecosystem engineers References: Yamaguchi, T., Prabowo, R. E., Ohshiro, Y., Shimono, T., Jones, D., Kawai, H., ... Tamura, I. 2009. The introduction to Japan of the Titan barnacle, Megabalanus coccopoma (Darwin, 1854)(Cirripedia: Balanomorpha) and the role of shipping in its translocation. Biofouling, 25(4), pp. 325-333. |
Toxicity / Life stage (?) | Not relevant |
Bioaccumulation association (?) | Anthropogenic chemical compounds References: Páez-Osuna, F., Bojorquez-Leyva, H., Ruelas-Inzunza, J. 1999. Regional variations of heavy metal concentrations in tissues of barnacles from the subtropical Pacific coast of Mexico. Environment International, 25(5), pp. 647-654. |
Known human health impact? | Known Comments: Harmless. |
Known economic impact? | Known References: Farrapeira, C. M. R., Melo, A. V. D. O. M. D., Barbosa, D. F., Silva, K. M. E. D. 2007. Ship hull fouling in the Port of Recife, Pernambuco. Brazilian Journal of Oceanography, 55, pp. 207-221. Comments: Boat hulls props, and drive shafts, and coastal navigation buoys are readily colonized by settling M. coccopoma. These organism attach on surfaces by gluing themselves. Ships need to use extra fuel to overcome the drag caused by accumulations of these animals on hulls. Combating this problem is in fact a multi-million dollar industry for marine paint countries. Furthermore, usage of heavy metal paints and synthetic compounds cause damage to the environment. Thus in case they are established, costs associated with removing animals from such structures may be expensive. |
Known measurable environmental impact? | Not known Comments: Not available. |
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 [Accessed 1 July 2024]. |
Association with vessel vectors (?) | Biofouling References: Farrapeira, C. M. R., Melo, A. V. D. O. M. D., Barbosa, D. F., Silva, K. M. E. D. 2007. Ship hull fouling in the Port of Recife, Pernambuco. Brazilian Journal of Oceanography, 55, pp. 207-221. Yamaguchi, T., Prabowo, R. E., Ohshiro, Y., Shimono, T., Jones, D., Kawai, H., ... Tamura, I. 2009. The introduction to Japan of the Titan barnacle, Megabalanus coccopoma (Darwin, 1854)(Cirripedia: Balanomorpha) and the role of shipping in its translocation. Biofouling, 25(4), pp. 325-333. |
Molecular information | Available NCBI (https://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?term=Megabalanus+coccopoma) |
Last update by | Sandra Gečaitė, 2024-08-13 |