Record of the invasive Red Sea mussel Brachidontes pharaonis (Bivalvia: Mytilidae) from the lagoon of Boughrara (Southern Tunisia, central Mediterranean sea).
Brachidontes pharaonis were recorded in tunisia water thrice. The first time in August 2007, a living specimen was collected from a freshly loggerhead stranded Zarzis (southern Tunisia). The second time during the project of the “Protection of the marine and coastal resources of the Gabes Gulf ” in 2011, the species was observed aggregated with Mytilaster minimus, in a costal area of Zarzis. Brachidontes pharaonis was considered rare. In 2013, the mollusca were recorded in the same area (Zarzis) in a very shallow depth in harbour and artificial reef. During an investigation of the lagoon of boughrara in 2016, a “Brachidontes bed” were discovred in the north west of the lagoon (Ajim Channel) at depth of 7 m. The salinity and the temperature water were respectively 45 PSU and 26.9 °C. The mulluscs density was estimeted to 5000 specimens/m2. The biometric mensuration was also assessed in the site.
| Main Authors: | , , , |
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| Format: | Journal Contribution biblioteca |
| Language: | English |
| Published: |
2018
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| Subjects: | Record, Brachidontes pharaonis, Invasive species, |
| Online Access: | http://hdl.handle.net/1834/15115 |
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| Summary: | Brachidontes pharaonis were recorded in tunisia water thrice. The first time in August 2007, a living specimen was collected from a freshly loggerhead stranded Zarzis (southern Tunisia). The second time during the project of the “Protection of the marine and coastal resources of the Gabes Gulf ” in 2011, the species was observed aggregated with Mytilaster minimus, in a costal area of Zarzis. Brachidontes pharaonis was considered rare. In 2013, the mollusca were recorded in the same area (Zarzis) in a very shallow depth in harbour and artificial reef.
During an investigation of the lagoon of boughrara in 2016, a “Brachidontes bed” were discovred in the north west of the lagoon (Ajim Channel) at depth of 7 m. The salinity and the temperature water were respectively 45 PSU and 26.9 °C. The mulluscs density was estimeted to 5000 specimens/m2. The biometric mensuration was also assessed in the site. |
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