Risk Analysis of Invasive Species Introduction in the Port of Arzew, by Calculation of Biofouling Surface on Ships’ Hulls

Bouda, Abderrahmane; Bachari, Nour El Islam; Nacef, Lamri; Bensari, Bilel

doi:10.1007/s10666-017-9567-1

Cited by 6 publications

(6 citation statements)

References 15 publications

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“…According to the report of the Regional Marine Pollution Emergency Response Centre for the Mediterranean Sea (REMPEC, 2008), the port of Arzew was classified as one of the Mediterranean ports most vulnerable to this type of risk. Biofouling constitutes an additional risk for the introduction of NIS (Bouda et al, 2018).…”

Section: Study Areamentioning

confidence: 99%

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First records of non-indigenous species in port of Arzew (Algeria: southwestern Mediterranean)

et al. 2020

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Maritime transport is considered to be one of the main factors to transfer non-indigenous species (NIS), through biofouling of ships’ hulls and ballast water. Therefore, ports and marinas constitute hot spots for the introduction of species carried by international shipping and therefore are important sites for initiating biological monitoring. In this study, the port of Arzew (Algeria, Southern Mediterranean) was surveyed for the presence of NIS and cryptogenic species. The fouling communities of floating submerged structures and the hull of a fishing vessel were sampled with a scraper blade. After fixing and separating, the organisms were identified to the lowest possible taxonomic level. The results revealed the presence of 10 NIS and cryptogenic species, including: 1 Ascidiacea, 2 Bryozoa, 3 Crustacea, 1 Mollusca 1 Porifera, and 2 Polychaeta. Five species are reported for the first time from the Algerian coast. This study contributes to the knowledge of non-native species on the Algerian coast and in the Southern Mediterranean and establishes a baseline dataset for future assessments of NIS in ports of Algeria.

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Section: Study Areamentioning

confidence: 99%

“…Maritime transport appears to be the main cause of transfer of NIS, through biofouling of ship hulls and ballast water (Gollasch, 2002;Bouda et al, 2018). In the West Mediterranean, shipping remains the most prominent route for these introductions (Zenetos et al, 2012).…”

Section: Introductionmentioning

confidence: 99%

First records of non-indigenous species in port of Arzew (Algeria: southwestern Mediterranean)

et al. 2020

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“…Furthermore, despite a high density of maritime traffic around the floating buoys sampled, these sites remained free of MtrBTN2. Long mooring times in ports increase the probability of hull surface colonization [69][70][71] as well as the risk of pathogen transmission [60]. This suggests that, in addition to cruising, ships may have to dock for the spread of MtrBTN2 to be effective, either through transmission of cancer cells or detachment of infected mussels (figure 4).…”

Section: Discussionmentioning

confidence: 99%

Marine transmissible cancer navigates urbanized waters, threatening spillover

Hammel,

Touchard,

Burioli

et al. 2024

Proc. R. Soc. B.

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Inter-individual transmission of cancer cells represents a unique form of microparasites increasingly reported in marine bivalves. In this study, we sought to understand the ecology of the propagation of Mytilus trossulus Bivalve Transmissible Neoplasia 2 (MtrBTN2), a transmissible cancer affecting four Mytilus mussel species worldwide. We investigated the prevalence of MtrBTN2 in the mosaic hybrid zone of M. edulis and M. galloprovincialis along the French Atlantic coast, sampling contrasting natural and anthropogenic habitats. We observed a similar prevalence in both species, probably due to the spatial proximity of the two species in this region. Our results showed that ports had higher prevalence of MtrBTN2, with a possible hotspot observed at a shuttle landing dock. No cancer was found in natural beds except for two sites close to the hotspot, suggesting spillover. Ports may provide favourable conditions for the transmission of MtrBTN2, such as high mussel density, stressful conditions, sheltered and confined shores or buffered temperatures. Ships may also spread the disease through biofouling. Our results suggest ports may serve as epidemiological hubs, with maritime routes providing artificial gateways for MtrBTN2 propagation. This highlights the importance of preventing biofouling on docks and ship hulls to limit the spread of marine pathogens hosted by fouling species.

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“…To approximate the total area of biofouled ships' hulls that transited through the port of Arzew during the period from 2013-2016, we calculated the individual wet area of each of the 5,733 vessels arriving from 210 different ports (see (Bouda et al, 2017)). The second step was to use the ecoregions de ned by (Spalding et al, 2007) to categorize each donor port surface.…”

Section: Methodsmentioning

confidence: 99%

Modeling the risk of introduction of non-native species by biofouling on ships' hulls: case study of Arzew port (Algeria)

Kacimi¹,

Bouda

Bensari

et al. 2021

Preprint

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Biofouling of ship hulls is considered as one of the oldest vectors for the transfer of aquatic invasive species. However, the introduction of non-native species by ballast water has received much more research attention. In this study, an alternative approach to dealing with biofouling was proposed for the port of Arzew, based on ship characteristics and transit routes. The strategy consisted of calculation of the surface area of biofouling of all ships calling at the port of Arzew during the period (2013–2016), to which was added spatial modeling using a Geographic Information System to highlight the most relevant information. We identified the areas that represented a high risk of species introduction according to their respective ecoregions of origin; those areas that constituted a minor risk, the type of ship that most likely promotes the establishment of non-native species by comparing the environmental similarity of the ecoregions assigned to the different ships with the environmental characteristics of the port of Arzew obtained by satellite imagery. The study showed that over a period of four years, 5,733 ships called at the port of Arzew, accumulating a total surface area of 35 million square meters. These results can be used for invasive species management purposes; such as: the application of specific regulations on ships of a certain tonnage that most promote the transfer of non-indigenous species, as well as their ecoregions of origin that present a great environmental similarity with the western Mediterranean, in order to minimize the transfer of aquatic invasive species.

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Risk Analysis of Invasive Species Introduction in the Port of Arzew, by Calculation of Biofouling Surface on Ships’ Hulls

Cited by 6 publications

References 15 publications

First records of non-indigenous species in port of Arzew (Algeria: southwestern Mediterranean)

First records of non-indigenous species in port of Arzew (Algeria: southwestern Mediterranean)

Marine transmissible cancer navigates urbanized waters, threatening spillover

Modeling the risk of introduction of non-native species by biofouling on ships' hulls: case study of Arzew port (Algeria)

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