scholarly journals Key Drivers for Copepod Assemblages in a Eutrophic Coastal Brackish Lake

Water ◽  
2019 ◽  
Vol 11 (2) ◽  
pp. 363 ◽  
Author(s):  
Neila Annabi-Trabelsi ◽  
Gamal El-Shabrawy ◽  
Mohamed E. Goher ◽  
Madhavapeddi N. V. Subrahmanyam ◽  
Yousef Al-Enezi ◽  
...  
Keyword(s):  
Nile Delta ◽  
Acartia Tonsa ◽  
Copepod Species ◽  
Indigenous Species ◽  
Coastal Lake ◽  
Brackish Lake ◽  
Identification Of Species ◽  
Key Drivers ◽  
Non Indigenous Species ◽  
First Time

The copepod assemblages and abiotic parameters were investigated at 11 stations in a large coastal lake (Lake Manzalah, Nile Delta) from 2009–2010 in order to verify any impacts of eutrophication and salinity on the copepod species composition. The environmental conditions and the copepod assemblages appeared to have changed in comparison with previous studies, possibly because of increasing eutrophication and invasions of non-indigenous species (NIS). The aim of the present study was the identification of species which can be used as ecological indicators of high trophic status. Among the nine copepod species of Lake Manzalah, Acartia tonsa, Mesocyclops ogunnus, and Apocyclops panamensis were reported for the first time. Acartia tonsa, a well-known NIS for the Mediterranean, numerically dominated the copepod assemblages in some portions of the lake. The distribution of Acanthocyclops trajani and Thermocyclops consimilis was insensible to eutrophication because they can stand high levels of nutrients and hypoxia. Compared with previous reports, the copepod assemblage of Lake Manzalah was richer in species. The invasions of NIS, in addition to the heterogeneous progress of eutrophication in the lake, created an environmental mosaic with many species in total, but with single areas suitable for only a small number of them.

scholarly journals Current limitations and future prospects of detection and biomonitoring of NIS in the Mediterranean Sea through environmental DNA

NeoBiota ◽  
2021 ◽  
Vol 70 ◽  
pp. 151-165
Author(s):  
Francesco Zangaro ◽  
Benedetta Saccomanno ◽  
Eftychia Tzafesta ◽  
Fabio Bozzeda ◽  
Valeria Specchia ◽  
...  
Keyword(s):  
Mediterranean Sea ◽  
Dna Barcode ◽  
Environmental Dna ◽  
Special Focus ◽  
Indigenous Species ◽  
Dna Barcodes ◽  
Identification Of Species ◽  
The Mediterranean ◽  
Taxonomic Groups ◽  
Non Indigenous Species

The biodiversity of the Mediterranean Sea is currently threatened by the introduction of Non-Indigenous Species (NIS). Therefore, monitoring the distribution of NIS is of utmost importance to preserve the ecosystems. A promising approach for the identification of species and the assessment of biodiversity is the use of DNA barcoding, as well as DNA and eDNA metabarcoding. Currently, the main limitation in the use of genomic data for species identification is the incompleteness of the DNA barcode databases. In this research, we assessed the availability of DNA barcodes in the main reference libraries for the most updated inventory of 665 confirmed NIS in the Mediterranean Sea, with a special focus on the cytochrome oxidase I (COI) barcode and primers. The results of this study show that there are no barcodes for 33.18% of the species in question, and that 45.30% of the 382 species with COI barcode, have no primers publicly available. This highlights the importance of directing scientific efforts to fill the barcode gap of specific taxonomic groups in order to help in the effective application of the eDNA technique for investigating the occurrence and the distribution of NIS in the Mediterranean Sea.

Three non-indigenous species ofAoroides(Crustacea: Amphipoda: Aoridae) from the French Atlantic coast

2015 ◽  
Vol 96 (8) ◽  
pp. 1651-1659 ◽  
Author(s):  
Benoit Gouillieux ◽  
Nicolas Lavesque ◽  
Jean-Charles Leclerc ◽  
Vincent Le Garrec ◽  
Frédérique Viard ◽  
...  
Keyword(s):  
Zostera Marina ◽  
Atlantic Coast ◽  
Indigenous Species ◽  
Oyster Reefs ◽  
Marine Waters ◽  
Arcachon Bay ◽  
Bay Of Brest ◽  
Non Indigenous Species ◽  
First Time ◽  
Sw France

The amphipod genusAoroidesis reported for the first time in European marine waters. Specimens ofAoroides semicurvatusandAoroides curvipeswere collected in oyster reefs in Arcachon Bay between 2009 and 2014 and in Hossegor Lake in 2014 (SW France). Specimens ofAoroides longimeruswere collected in 2013 and 2014 in subtidal slipper limpet beds andZostera marinameadows in Arcachon Bay and in 2014 on floating pontoons in the Bay of Brest (W France). These species, native to Asia, may have been accidentally introduced in Arcachon Bay and Hossegor Lake with oyster transfers and in the Bay of Brest through both oyster transfers and shipping.

scholarly journals New phytoplankton species in the Bay of Fundy since 1995

2008 ◽  
Vol 65 (5) ◽  
pp. 759-764 ◽  
Author(s):  
Jennifer L. Martin ◽  
Murielle M. LeGresley
Keyword(s):  
New Species ◽  
Bay Of Fundy ◽  
Indigenous Species ◽  
Phytoplankton Species ◽  
Lime Kiln ◽  
Phytoplankton Distribution ◽  
Passamaquoddy Bay ◽  
Odontella Sinensis ◽  
Non Indigenous Species ◽  
First Time

Abstract Martin, J. L., and LeGresley, M. M. 2008. New phytoplankton species in the Bay of Fundy since 1995. – ICES Journal of Marine Science, 65: 759–764. A monitoring programme was initiated in 1987 to study phytoplankton populations in the Western Isles region of the Bay of Fundy, southwest New Brunswick. Samples are collected weekly from May through October, and monthly during the remaining months, to determine phytoplankton distribution and abundance at Brandy Cove, Lime Kiln Bay, Deadmans Harbour, the Wolves Islands, and mid-Passamaquoddy Bay. Since the programme was initiated, several previously absent or non-indigenous species have been found, suggesting that new species may have been introduced to the area. In order to establish a baseline for species indigenous to Bay of Fundy waters, we have taken a conservative approach and termed species reported for the first time in the Bay of Fundy system since 1995 as “new” species. New species include the following: (dinoflagellates) Alexandrium pseudogonyaulax, Amphidinium carterae, A. sphenoides, Ceratium macroceros, Polykrikos schwartzii, Preperidinium meunieri, Protoperidinium crassipes, and Pyrocystis lunata; (diatoms) Attheya septentrionalis, Attheya longicornis, Chaetoceros radicans, Cylindrotheca gracilis, Grammatophora serpentina, Lithodesmium undulatum, Mediopyxis helysia, Membraneis challengeri, Neodenticula seminae, Odontella sinensis, Proboscia eumorpha, Pseudo-nitzschia subpacifica, Pseudo-nitzschia fraudulenta, and Thalassiosira punctigera.

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

2020 ◽  
Author(s):  
BILEL BENSARI ◽  
LAMIA BAHBAH ◽  
ADLANE LOUNAOUCI ◽  
SEYF EDDINA FAHCI ◽  
ABDERRAHMANE BOUDA ◽  
...  
Keyword(s):  
Hot Spots ◽  
Native Species ◽  
Indigenous Species ◽  
Fishing Vessel ◽  
Fouling Communities ◽  
Southern Mediterranean ◽  
Algerian Coast ◽  
Cryptogenic Species ◽  
Non Indigenous Species ◽  
First Time

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.

scholarly journals Further dispersion of the invasive alien species Corbicula fluminea (O. F. Müller, 1774) in the Oder River

2019 ◽  
pp. 14 ◽  
Author(s):  
Klaudia D. Cebulska ◽  
Mariola Krodkiewska
Keyword(s):  
Alien Species ◽  
Water Channel ◽  
Corbicula Fluminea ◽  
Freshwater Ecosystems ◽  
Indigenous Species ◽  
Vistula River ◽  
New Findings ◽  
Oder River ◽  
Non Indigenous Species ◽  
First Time

Corbicula fluminea is recognised as being one of the worst alien species in Europe and one of the world's most widespread non-indigenous species in freshwater ecosystems. In Poland, it was detected in a heated water channel of the Lower Oder Power Station near Szczecin for the first time in 2003. In the following years, it continued its spread in the Oder River and the Vistula River. Our study uncovered new findings of C. fluminea in the Upper Oder River, which are its southernmost localities in the Oder River. Its record in the Gliwice Canal indicates that this may be a new dispersion route to the east for this species.

scholarly journals First report of the invasive macroalga Acrothamnion preissii (Rhodophyta, Ceramiales) in the Atlantic Ocean

2018 ◽  
Vol 61 (1) ◽  
pp. 85-90
Author(s):  
Manuela I. Parente ◽  
Daniela Gabriel ◽  
Joana Micael ◽  
Andrea Z. Botelho ◽  
Enric Ballesteros ◽  
...  
Keyword(s):  
Invasive Species ◽  
Atlantic Ocean ◽  
Mediterranean Sea ◽  
First Record ◽  
Indigenous Species ◽  
Hull Fouling ◽  
The Mediterranean ◽  
Non Indigenous Species ◽  
First Time ◽  
Santa Maria

AbstractAcrothamnion preissiiis an invasive species in the Mediterranean Sea, and is listed among the 100 worst non-indigenous species. In July and August 2009, this non-native red macroalga was found for the first time in the Azores (on Santa Maria), and this represents the first record of this species in the Atlantic. Here, we describe the establishment of this invasive species in the Atlantic. In recent surveys,A. preissiidisplayed an invasive behaviour. As suggested for the Mediterranean Sea, hull fouling is the most likely vector for its introduction into the Azores.

scholarly journals STUDY OF ECOSYSTEM OF THE SUKHUM BAY WITH EMPHASIS ANTHROPOGENIC IMPACT, ABKHAZIAN BLACK SEA COAST

2019 ◽  
Vol 22 ◽  
pp. 108-116
Author(s):  
Zhanna P. Selifonova ◽  
Pavel R. Makarevich ◽  
Ernest Z. Samyshev ◽  
Levard M. Bartsits
Keyword(s):  
Alien Species ◽  
Black Sea ◽  
Benthic Communities ◽  
Nutrient Status ◽  
Common Species ◽  
Indigenous Species ◽  
Macrophyte Community ◽  
Non Indigenous Species ◽  
Sea Area ◽  
First Time

For the first time in thirty years, baseline comprehensive studies plankton and zoobenthos of the Sukhum Bay were conducted and an assessment of its current environmental status was given. The summer phytoplankton abundance of the port of Sukhum was represented mainly by coccolithophorids  Emiliania huxleyi and diatoms algae, among the latter, the common species in polluted or eutrophic brackish waters were recorded. The presence of euglenic algae and cyanobacteria indicates a higher nutrient status, pollution and desalination of the sea area. The alien species Peridinium quinquecorne Abé (Dinophyceae) was recorded in the Abkhazian coastal waters for the first time. Totally, 7 species of tintinnids  belonging to 3 genera Favella, Tintinnopsis, Eutintinnus were established from the Sukhum Bay. Among them, the non-indigenous species Eutintinnus  tubulosus and E. apertus were noticed. Tintinnid ciliates accounted for ca. 5% of total ciliates abundance. The values of the abundance of aloricated ciliates were comparable to the values obtained  from offshore of bays and ports of the northeastern Black Sea. As the pressure of predators is reduced the well-pronounced peaks of holo- and meroplankton biomass were recorded in the last summer – early autumn. A significant part of total holoplankton biomass – 66.5 % (up to 1.1 g/m3) was composed of cladocerans  Penilia avirostris. The  meroplankton was dominated by larvae of bivalve mollusks Mytilaster lineatus,  polychaetes Polydora cornuta and cirripede barnacle Amphibalanus improvisus. The number of meroplankton in the open Sukhum port was 10–15 times lower above than a level of values obtained for ports and bays of the northeastern Black Sea. Among ichthyoplankton, the dominant species were Mullus barbatus ponticus, Diplodus annularis, Trachurus mediterraneus, Engraulis encrasicholus and Sciena umbra. Mean abundance of ichthyoplankton in vertical catches was 5–10 times lower than in offshore of Anapa and Gelendzhik of the northeastern Black Sea. And the proportion of dead eggs was 2 – 3 times higher than areas of these resort cities. The composition of macrozoobenthos was drastically depleted and resembled that of the polluted port complexes of the northeastern Black Sea. Heteromastus association  dominated in mud bottom sediments. Among spionid polychaetes, the worst invaders Streblospio gynobranchiata and Polydora cornuta have been recorded in soft bottom communities. Depletion of benthic communities, loss from the structure of the trophic web of the macrophyte community and appearance of cyanobacteria and a new alien species in the planktonic and benthic communities leads inevitably to imbalance of the structure of the Sukhum port ecosystem.

Distribution and abundance of Talitridae in the southern Baltic Sea – twelve years after the first record of Platorchestia platensis (Krøyer, 1845) in 2005

2019 ◽  
Vol 48 (1) ◽  
pp. 66-75 ◽  
Author(s):  
Marta B. Tykarska ◽  
Urszula Janas ◽  
Radosław Brzana
Keyword(s):  
Baltic Sea ◽  
First Record ◽  
Indigenous Species ◽  
Gulf Of Gdańsk ◽  
Southern Baltic Sea ◽  
Open Sea ◽  
Talitrus Saltator ◽  
Southern Baltic ◽  
Non Indigenous Species ◽  
First Time

Abstract Four Talitridae species have been recorded in the southern Baltic Sea, including two indigenous species – Talitrus saltator, Deshayesorchestia deshayesii, and two presumably non-indigenous ones – Cryptorchestia garbinii, Platorchestia platensis. It has been twelve years since Platorchestia platensis was recorded for the first time. The distribution and abundance of talitrids have not been studied since the 1990s. Therefore, the main objective of this research was to document the occurrence in Talitridae in the region in order to determine whether non-indigenous P. platensis has spread and whether it co-occurs with indigenous species. Talitrids were recorded at 20 out of 43 sampling sites. T. saltator occurred both along the coast of the open sea and in the Gulf of Gdańsk. The remaining species were found only around the gulf. P. platensis was more abundant than other species and its density was positively correlated with wrack biomass. Our studies have shown that the area of T. saltator occurrence has decreased during the last two decades. Non-indigenous species P. platensis co-occurred with all other Talitridae species, whereas C. garbinii co-occurred only with P. platensis.

Copepoda in the shallow hypersaline Bardawil coastal lake (Egypt): Are there long-term changes in composition and abundance?

2018 ◽  
Vol 47 (3) ◽  
pp. 219-229 ◽  
Author(s):  
Elena V. Anufriieva ◽  
Gamal M. El-Shabrawy ◽  
Nickolai V. Shadrin
Keyword(s):  
Abundant Species ◽  
Acartia Tonsa ◽  
Total Abundance ◽  
Coastal Lake ◽  
Composition Distribution ◽  
Sea Area ◽  
First Time ◽  
Stable Populations ◽  
Total Average

Abstract Coastal Lake Bardawil (Egypt) is one of the largest hypersaline lakes in the world. In 2009–2010, the authors studied composition, distribution and seasonal dynamics of copepods at 12 sites. A total of 10 species of copepods were recorded in zooplankton during the study period, including 5 Calanoida, 2 Cyclopoida and 3 Harpacticoida. Oithona nana was the most common and most abundant species. All copepods in the lake can be divided into three groups: 1) planktic species that form stable populations, 2) species of Mediterranean plankton incidentally entering the lake from the adjacent sea area, 3) benthic Cyclopoida and Harpacticoida that can be abundant in plankton. Two species – Acartia tonsa and A. danae were recorded here for the first time. The total abundance of copepods in the lake was significantly higher (90 times on average) compared to that observed in 2008–2009 in the waters of the Egyptian Mediterranean Sea. Since 1967, the complex of common and dominant copepod species in the lake has changed significantly. The total average annual copepod abundance varied: in 2002 – it was about 4000 ind. m−3, in 2004 – 152 000 ind. m−3, in 2005 – about 25 300 ind. m−3, and in 2009–2010 – about 56 000 ind. m−3.

scholarly journals First confirmed record of Nymphoides peltata (S.G.Gmel.) Kuntze (Menyanthaceae) naturalised in southern Africa

Bothalia ◽  
2018 ◽  
Vol 48 (1) ◽  
Author(s):  
Michael D. Cheek
Keyword(s):  
South Africa ◽  
Southern Africa ◽  
Growth Form ◽  
First Record ◽  
Indigenous Species ◽  
Nymphoides Peltata ◽  
Kwazulu Natal ◽  
Aquatic Flora ◽  
Non Indigenous Species ◽  
First Time

Background: Nymphoides peltata is a hydrophyte with a nymphaeid growth form and is known to be an invader of aquatic ecosystems.Objectives: To document the presence of N. peltata outside of cultivation in southern Africa.Method: Herbarium vouchers of newly collected material were compared against the vouchers of indigenous members of the genus and with the relevant botanical literature to confirm the identity of the species.Results: Nymphoides peltata is confirmed as occurring outside of cultivation for the first time in South Africa. The species was recorded from two dams adjacent to the Umgeni River in the KwaZulu-Natal midlands.Conclusion: This is the first record of a non-indigenous species of the Menyanthaceae family for South Africa outside of cultivation and adds to our knowledge of the alien aquatic flora of the region. Nymphoides peltata is listed as a Category 1a species, which means that it should be eradicated.

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