AquaNISInformation system on aquatic non-indigenous and cryptogenic species |
Species | Gonionemus vertens | |
Date of the first record (?) | 2016 |
Recipient region (?) | Country: France LME: 26. Mediterranean Sea LME sub-region: Western Mediterranean References: Marchessaux, G., et al. "First report of the invasive jellyfish Gonionemus vertens A. Agassiz, 1862 in the Berre Lagoon, southeast France." Bioinvasions Records. 6.4 (2017): 339–344 Comments: The hydromedusa Gonionemus vertens A. Agassiz, 1862 was first detected in the Berre Lagoon, south of France, in July 2016. Early June 2017, following an early rise in temperature, much higher numbers of specimens were reported leading to several beach goers being stung and one going into anaphylactic shock. Effort to rehabilitate this highly anthropogenically altered lagoon has led to the redevelopment of the Zostera meadows, which might be favoring the clinging jellyfish. Developmental aberrations of specimens were noted, which could be linked to the remaining presence of chemicals from the industrial development period. Impact of this predator species on the functioning of the lagoon ecosystem should also be studied. |
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Source region (?) | Not entered |
Pathway / Vector (?) | Unknown References: Marchessaux, G., et al. "First report of the invasive jellyfish Gonionemus vertens A. Agassiz, 1862 in the Berre Lagoon, southeast France." Bioinvasions Records. 6.4 (2017): 339–344 Comments: In addition to shellfish farming + ballast watern transportation of cysts adhering to seabirds’ feet has also been proposed as a mean of introduction. |
Habitat type (?) | Not entered | |
Wave exposure (?) | Not entered | |
Salinity range (?) | Not entered | |
Temperature range (?) | Not entered |
Zonation / Substratum (?) | Not entered | |
Reproductive duration (?) | Not entered | |
Reproductive seasonality (?) | Not entered | |
Migration pattern (?) | Not entered |
Population status (?) | Not entered | |
Species status (?) | Non-indigenous species |
Created by | Amelia Curd, 2018-02-19 |