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AquaNISInformation system on aquatic non-indigenous and cryptogenic species |
| Species | Platorchestia platensis [WoRMS] | |
| Authority | (Krøyer, 1845) | |
| Family | Talitridae | |
| Order | Amphipoda | |
| Class | Malacostraca | |
| Phylum | Arthropoda | |
| Synonym (?) | ||
| Sub-species level (?) | Not entered |
| Native origin (?) | Not entered Comments: SW Atlantic |
| Life form / Life stage (?) |
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| Sociability / Life stage (?) |
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| Reproductive frequency (?) | Iteroparous |
| Reproductive type (?) | Sexual References: Serejo, C. S., Lowry, J. K. 2008. The coastal Talitridae (Amphipoda: Talitroidea) of southern and western Australia, with comments on Platorchestia platensis (Krøyer, 1845). Records of the Australian Museum, 60(2/3), pp. 161-206. Comments: Males locate potential partners with the aid of their antenna to detect the pheromones released by the females; the male then rides or carries the female until the latter is ready to molt. When the female is ready, the male pushes the sperm into the marsupium and releases the female afterwards. |
| Developmental trait (?) | Brooding Direct development References: Serejo, C. S., Lowry, J. K. 2008. The coastal Talitridae (Amphipoda: Talitroidea) of southern and western Australia, with comments on Platorchestia platensis (Krøyer, 1845). Records of the Australian Museum, 60(2/3), pp. 161-206. Comments: Eggs are brooded in the marsupium. Eggs hatch into juveniles and remain in the marsupium for a few days. |
| Characteristic feeding method / Life stage (?) |
Comments: P. platensis, are among the first crustaceans known with a facultative ability to change from wrack to driftwood as food. |
| Mobility / Life stage (?) |
References (not structured): Spicer, J. I., Janas, U. 2006. The beachflea Platorchestia platensis (Kroyer, 1845): a new addition to the Polish fauna (with a key to Baltic talitrid amphipods). Oceanologia, 48(2). Comments: P. platensis lives above the littoral zone in moist sand or rotting seaweed. |
| Salinity tolerance range (?) | Unknown Comments: Not available. |
| Habitat modifying ability potential (?) | Unknown Comments: Not available. |
| Toxicity / Life stage (?) | Not relevant |
| Bioaccumulation association (?) | Anthropogenic chemical compounds References: Casini, S., Depledge, M. H. 1997. Influence of copper, zinc, and iron on cadmium accumulation in the talitrid amphipod, Platorchestia platensis. Bulletin of environmental contamination and toxicology, 59, pp. 500-506. |
| Known human health impact? | Not known Comments: Not available. |
| Known economic impact? | Not known Comments: Not available. |
| Known measurable environmental impact? | Known Comments: Appears to be competitive exclusion between P. platensis and the native Orchestia gammarellus on European beaches. |
| 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 (?) | Ballast waters References: Simpson, R. 2011. The invasive biology of the talitrid amphipod Platorchestia platensis in North West Europe. Comments: The species description was based on specimens collected near the commercial port of Montevideo, and the species probably spreads through ship's ballast. |
| Last update by | Sandra Gečaitė, 2024-08-19 |