On the occurrence of Pinctada radiata (Mollusca: Bivalvia: Pteriidae), an alien species in Croatian waters (original) (raw)
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Marine pollution bulletin, 2017
The Mediterranean Sea is increasingly under threat from invasive species that may negatively affect biodiversity and/or modify ecosystem structure and function. The bivalve mollusc Pinctada imbricata radiata is listed among the 100 most invasive species in the Mediterranean. A first finding of an established population of P. imbricata radiata in the coastal waters of the eastern Adriatic Sea, is presented in this paper. Six and then 30 live specimens were collected in 2015 and in 2017, respectively, at depths of 5 to 15m from the island of Mljet, Croatia. DNA sequencing of the mitochondrial cytochrome c oxidase I gene (COI) revealed three different haplotypes. All samples showed greatest similarity (98 to >99%) to P. radiata COI sequence records in GenBank (=P. imbricata radiata as used in this paper). A Neighbour Joining tree placed all Croatian samples within the 100% bootstrap supported clade for P. imbricata radiata.
Marine Pollution Bulletin, 2019
The present paper is a contribution to the first initiative of the Port Baseline Survey (PBS) for Non-indigenous species (NIS) in the Mediterranean Sea. It presents a report on the soft-bottom macrobenthos from the five Adriatic ports: Bari, Ancona (Italy), Koper (Slovenia), Pula, Rijeka (Croatia), with a focus on the presence and contribution of NIS to native assemblages. Out of 451 species identified, only four were common to all ports. A total of eight NIS were recorded, five in surveyed ports and three in the lagoon connected to the Port of Koper. The highest number of NIS was recorded in Bari, and the highest abundance in Ancona and Bari. Generally, the number, abundance and contribution of NIS seems too low to cause a substantial impact on native communities in surveyed ports. The suitability of methods adopted for PBS for soft-bottom NIS was discussed and suggestion for methodological improvement is provided. Framework Directive (MSFD, 2008/56/EC). Important actions on the global and regional level address: the International Convention for the Control and Management of Ships' Ballast Water and Sediments (BWM Convention) that requires ships to manage their ballast water to remove, render harmless, or avoid the uptake or discharge of aquatic organisms and pathogens within ballast water and sediments (IMO, 2004), 2) the identification of Pollution Hotspot Sites (PHS) in marine environments (EEA/UNEP/MAP, 2006) and 3) Pollution priority sites that require immediate actions to reach the desirable environmental conditions (Andričević et al., 2011). Coastal waters are widely recognized as marine areas of high ecological and economic value, but also as highly threatened zone, exposed to multiple human activities and their negative impacts. The Adriatic Sea did not escape this fate, particularly its northern part. It displays a wide range of features related to sensitive marine ecosystems: a semienclosed water body, shallow depth (< 50 m), soft substrata, stratification of water column, high riverine input (e.g. Po River), and high productivity (Stachowitsch, 1991). Many kinds of biological and ecological threats negatively affect the Adriatic Sea ecosystem e.g.,
REVIEW ON PINNA RUDIS (LINNAEUS, 1758) (BIVALVIA: PINNIDAE) PRESENCE IN THE MEDITERRANEAN
Agriculture & Forestry, 2019
Pinna rudis (Linnaeus, 1758) or the rough pen shell, has AtlanticMediterranean distribution, and prefers warmer waters and harder substrates. Species is threatened by different factors and it is listed on Annex II of the Bern and Barcelona Convention. Some changes in species distribution are evident, most probably related to climate changes. Until 2018 presence of this species in the Adriatic Sea had not been confirmed with certainty, when it was find for the first time in Boka Kotorska Bay, what also presents first certain findings of the species in the Adriatic Sea. In this paper review on species presence along Mediterranean coast is given. Collected data indicate that species is more common in west Mediterranean compare to east and north part, and that future monitoring and status of population is required.
Non-indigenous macrozoobenthic species on hard substrata of selected harbours in the adriatic sea
ABSTRACT The intense shipping traffic characterising the Adriatic Sea favours the spread of marine organisms. Yet, a study of 12 Adriatic ports (4 on the western side and 8 on the eastern side of the basin) found that non-indigenous species (NIS) accounted for only 4% of the benthic communities settled on hard substrates. The cirripeds Amphibalanus amphitrite and Balanus trigonus, found in 8 harbours, were the most common invaders followed by Amphibalanus eburneus, the ascidian Styela plicata, and the bivalve Magallana gigas. The highest percentage of NIS was recorded in Venice and Ploče, the harbours with the least rich native communities; the lowest percentage was retrieved in Trieste, Koper, Pula, and Rijeka, the harbours hosting the highest species diversity. In contrast, the ports of Bari and Ancona showed both high NIS percentages and highly diversified communities.
Updated checklist of Marine Bivalve Molluscs of Montenegro (southeast Adriatic Sea
Mediterranean Marine Science, 2022
This paper presents an updated inventory of marine bivalves of Montenegro. The checklist based on published literature and recent research includes 165 taxa. Eleven taxa are recorded here for the first time in Montenegrin coastal waters. Six species are non-indigenous, while one is crytogenic. Two species (Lithophaga lithophaga and Pinna nobilis) are additionally listed in Annex IV of the Habitat Directive and are therefore protected fauna species in Montenegro. Three species are strictly protected according to the Bern Convention (Appendix II), while four species are endangered or threatened according to the Barcelona Convention (1976, Annex II). Pinna nobilis is considered to be Critically Endangered due to mass mortality. Finaly, as Thyasira orahovaziana is a questionable taxon as its validity is uncertain (taxon inquirendum) it is excluded from the checklist, as well as the taxa Spaniorinus reconditus which is extinct and Mytilus edulis, whose occurrence in Montenegrin coastal waters is uncertain.
Acta Ichthyologica et Piscatoria, 2014
The Mediterranean basin is considered a major recipient of non-indigenous marine species. Their number is estimated to range from 573 species (Galil 2009) to 986 species, of which 249 are associated with the Central Mediterranean region (Zenetos et al. 2012). According to Zenetos et al. (2010), 149 non-indigenous fish species have been recorded from the Mediterranean Sea. Of this number, approximately 80 species are Lessepsian fish migrants (Golani et al. 2011). In the Adriatic Sea, at least 24 nonindigenous fish species have been reported in the last two decades of which 13 are Lessepsian migrants (Dulčić and Dragičević 2011). Recently, two species of Atlantic origin, the queen angelfish, Holacanthus ciliaris (Linnaeus, 1758), and the creole-fish, Paranthias furcifer (Valenciennes, 1828), have been anthropogenically introduced to the Adriatic Sea (Dulčić and Dragičević 2013a, 2013b). Additionally, there are cases of shipping-and aquaculture-related introductions such as the cases of dwarf flathead, Elates ransonnettii (Steindachner, 1876), and red seabream, Pagrus major Temminck et Schlegel, 1843, respectively (Dulčić and Kraljević 2007, Dulčić et al. 2010). Golani et al. (2011) emphasized that it is important that first records of alien fish species in new areas are followed by reports of subsequent records and that such additional records are needed to acknowledge the establishment and distribution in the new habitat. Subsequent records may indicate that previous occurrences were not just accidental and that the new region is included in the zoographic range of the species (Golani and Levy 2005). The aim of the present work is to report subsequent records of fishes which have only recently been recorded in the Adriatic Sea for the first time. In this paper we report subsequent records of the Atlantic tripletail, Lobotes surinamensis (Bloch, 1790) (Perciformes: Lobotidae); blue runner, Caranx crysos (Mitchill, 1815) (Perciformes: Carangidae); fangtooth moray, Enchelycore anatina (Lowe, 1838) (Anguilliformes: Muraenidae); and silvercheeked toadfish, Lagocephalus sceleratus (Gmelin, 1789) (Tetraodontiformes: Tetraodontidae). Specimens of Caranx crysos and Lagocephalus sceleratus were caught by trammel net, while those of Lobotes surinamensis by seine net. The photograph of Enchelycore anatina and detailed information on it were obtained from Mr. Rok Korošec from the Feel Deep Diving Club, Slovenia. Photographs of Caranx crysos were obtained from the fisherman Mićo Kočović who caught it and determination of the species was based on them. The specimen of Lobotes surinamensis was deposited in the collection of
New records of introduced species in the Mediterranean Sea (April 2023)
Mediterranean Marine Science, 2023
This Collective article reports 17 introduced species and 22 new locations for these species in the Mediterranean Sea. The reports are from three different Marine Strategy Framework Directive (MSFD) subregions (Aegean-Levantine Sea, Adriatic Sea and Western Mediterranean Sea) and the Sea of Marmara and cover ten different countries. The goal of consistent and detailed reporting of introduced species is to complement the existing species inventories and serve as a basis for establishing monitoring strategies and other conservation measures. Some of the reports from this article are the first species records for the Mediterranean Sea, namely the green alga Udotea flabellum from the Aegean Sea (Turkey) and the deepbody boarfish Antigonia capros from the Balearic Sea (Spain). In addition, new records of introduced species are included for different seas, namely the moon crab Matuta victor for the Aegean Sea (Greece), the whale shark Rhincodon typus and the lionfish Pterois miles for the Alboran Sea (Spain), the almaco jack Seriola rivoliana for the Tyrrhenian Sea (Italy), and the hound needlefish Tylosurus crocodilus for the Adriatic Sea (Italy). Furthermore, reports on first country records are included: the red alga Colaconema codicola from Slovenia, the nudibranch Melibe viridis from Bosnia and Herzegovina, the lionfish Pterois miles from Montenegro, and the goldstripe sardinella Sardinella gibbosa from Syria, which also represents a second record for the Mediterranean Sea. Furthermore, the occurrence of the scleractinian coral Oculina patagonica was noted in Gulf of Lion (France). Four polychaete species, namely Leodice antennata, Timarete punctata and Branchiomma bairdi, are reported from the vermetid reef habitat and two of them (L. antennata and B. bairdi) are also recorded for the first time in Lebanon. Evidence for established populations of the Asian date mussel Arcuatula senhousia in the Sea of Marmara (Turkey) and the rayed pearl oyster Pinctada radiata around the island of Sardinia (Italy) is provided.
The pearl oyster Pinctada radiata (Leach, 1814) is an alien species introduced to the Mediterranean Sea and recorded in Tunisia many years ago. However, since its record in Tunisian inshore areas, no studies have been carried out about the spread of this invasive mollusc. Thus, the status of this species is still poorly known and there is a knowledgegap about its distribution and ecology. The present work is a contribution to the knowledge of the pearl oyster distribution and density of individuals along the northern and eastern Tunisian coasts, at depths situated between 0 and 6 metres. A large part of Tunisian coast was surveyed, stressing some observations concerning the species ecology and its preferred biotopes. The size structure of the five densest populations was also described. Pinctada radiata has not yet reached the northern coasts (Tabarka and Bizerta coasts). Density of individuals varied from one locality to another between 0 and 62.67 ± 6.11 individuals m -2 . This mollusc prefers to be attached to vertical solid substrata (natural or artificial) within marine habitats with relatively high hydrodynamic conditions. Confined localities such as those inside lagoons seem not to be the preferred habitat for the proliferation of this immigrant species. Size structure analysis showed that the majority of the five examined populations, except for Tunis north lagoon and La Marsa, were dominated by large individuals exceeding 42 mm in shell height. It is worth noting that the maximum size (100.5 mm) recorded in the lagoon of Bizerta (Njila) is higher than that recorded in previous studies, in particular in its origin habitat (Red Sea). This suggests that Pinctada radiata is well adapted to Tunisian coasts.