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    Distribution of Eunicidae (Annelida: Polychaeta) along the Levantine coast of Turkey, with special emphasis on alien species
    (Springer Heidelberg, 2017) Kurt-Sahin, Guley; Cinar, Melih Ertan
    Distributional features of Eunicidae (Annelida, Polychaeta) along the Levantine coast of Turkey were assessed based on data derived from qualitative and quantitative samples collected in various substrata, habitat and depths (0-100 m). The examined material contained 12 species and 4644 individuals belonging to five genera (Eunice, Leodice, Lysidice, Marphysa and Palola). Marphysa was represented by the highest number of species and Lysidice by the highest number of individuals in the area. The dominant species were Lysidice ninetta, L. margaritacea and Leodice antennata; the most frequent species were Leodice antennata, Lysidice ninetta and L. unicornis among the stations. The Lessepsian migrants, Leodice antennata and Palola valida, seem to have been well established and formed dense populations (max. 725 and 100 ind.m(-2), respectively) in the area. The distribution of L. antennata seems to be related to the total inorganic nitrogen and silica concentrations in the water column. The ratio between alien and native species' abundances increased from the western to the eastern parts of the region.
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    Diversity of Annelida from the coasts of Turkiye
    (Tubitak Scientific & Technological Research Council Turkey, 2024) Cinar, Melih Ertan; Acik, Sermin; Kurt, Guley; Dereli, Deniz Erdogan
    The compilation of scientific papers dealing with marine annelids (including Sipuncula) along the coasts of T & uuml;rkiye (Black Sea, Sea of Marmara, Aegean Sea, and Levantine Sea) together with the new records of polychaete species (21 species) presented in this study resulted in a list of 827 species belonging to 63 families. Polychaeta were represented by 782 species, Sipuncula by 21 species, Oligochaeta by 18 species, Hirudinea by 5 species, and Echiura by 1 species. Syllidae (127 species), Spionidae (57 species), and Serpulidae (56 species) were the most species-rich families and their numbers varied among the seas. Most annelid species were benthic (808 species), 14 species were pelagic, and 5 species (leeches) were parasitic. The Aegean Sea had the highest number of species (634 species), followed by the Levantine Sea (566 species) and the Sea of Marmara (479 species). A total of 72 alien annelid species were reported from the region, with the highest number of alien species (64 species) being found in the Levantine Sea and the lowest number of alien species (3 species) in the Black Sea.
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    Diversity of Platyhelminthes, Xenacoelomorpha, Nematoda, Acanthocephala, Brachiopoda, Kinorhyncha, Nemertea, Chaetognatha, Tardigrada, Gastrotricha, Rotifera, Phoronida, Echinodermata, and Chordata (Tunicata, Cephalochordata, and Hemichordata) from the coasts of Turkiye
    (Tubitak Scientific & Technological Research Council Turkey, 2024) Cinar, Melih Ertan; Urkmez, Derya; Yokes, Baki
    The current biodiversity of 14 phyla, namely Platyhelminthes, Xenacoelomorpha, Nematoda, Acanthocephala, Brachiopoda, Kinorhyncha, Nemertea, Chaetognatha, Tardigrada, Gastrotricha, Rotifera, Phoronida, Echinodermata, and Chordata (invertebrates only, including the subphyla Tunicata, Cephalochordata, and Hemichordata) from the coasts of T & uuml;rkiye is revisited. It was found that a total number of 695 species occur along all the coastlines of T & uuml;rkiye, with the Black Sea being represented by 297 species, the Sea of Marmara by 305 species, the Aegean Sea by 308 species, and the Levantine Sea by 204 species. The most species-rich phyla in these regions were Platyhelminthes (249 species), Nematoda (131), Echinodermata (98), and Chordata (85). A total of 26 alien species have been reported from the regions to date, of which one species belongs to Chaetognatha, 8 species to Echinodermata, and 17 species to Tunicata. The highest number of alien species (17) was encountered in the Levantine Sea and the lowest (2) was in the Black Sea.
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    Macro-benthic invertebrates associated with the black sponge Sarcotragus foetidus (Porifera) in the Levantine and Aegean Seas, with special emphasis on alien species
    (Academic Press Ltd- Elsevier Science Ltd, 2019) Cinar, Melih Ertan; Bakir, Kerem; Dogan, Alper; Acik, Sermin; Kurt, Guley; Katagan, Tuncer; Ozturk, Bilal
    The fauna associated to the sponge Sarcotragus foetidus was studied in two eco-regions of the Mediterranean Sea, the Aegean and Levantine Seas. A total of 134 species belonging to 8 taxonomic groups were determined. Different species assemblages were encountered in the eco-regions, mainly due to the importance of some alien species (Red Sea invaders) on sponge communities. Among community parameters, only the number of species differed significantly among the sub-regions. The number of species and the number of individuals were significantly and positively correlated with the sponge volume. The species assemblage patterns determined were significant correlated with a set of environmental variables such as nitrogen, phosphate and dissolved oxygen. Some alien species such as the ophiuroid Ophiactis savignyi and the polychaete Leonnates indicus densely invaded porous systems of sponges in the Levantine Sea, indicating the magnitude of impacts of alien species on the eastern Mediterranean ecosystem. In the Levantine Sea, the alien species accounted for 34% of total number of individuals of macro-invertebrates associated with sponges, but the percentage rose up to 64% in Iskenderun Bay (eastern-most point of studied area). The biotic index ALEX detected a moderate ecological status in the area in terms of the impacts of alien species on native biodiversity.
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    Macrobenthic fauna associated with the invasive alien species Brachidontes pharaonis (Mollusca: Bivalvia) in the Levantine Sea (Turkey)
    (Cambridge Univ Press, 2017) Cinar, Melih Ertan; Bakir, Kerem; Ozturk, Bilal; Katagan, Tuncer; Dogan, Alper; Acik, Sermin; Kurt-Sahin, Guley
    The invasive alien mytilid species, Brachidontes pharaonis, forms a biogenic habitat in the mediolittoral and upper-infralittoral zones of the Levantine Sea, hosting a number of alien and native species. Examinations of samples taken from dense, continuous mussel beds at seven stations along the coast of northern Levantine Sea yielded 187 macro-benthic invertebrate species belonging to 11 taxonomic groups. Polychaeta accounted for 46% and 37% of the total number of species and individuals, respectively. The top three dominant species in the mussel beds were Stenothoe gallensis, Spirobranchus kraussi and Mytilaster minimus. The species with the highest frequency values on the mussel beds were Pseudonereis anomala, Phascolosoma stephensoni and Elasmopus pocillimanus. The highest density and biomass of the associated fauna were estimated as 42,550 ind m(-2) and 1503 wwt g m(-2), respectively. The species number in samples varied between 14 and 47 species. The environmental variables best explaining variations in zoobenthic community structures were salinity, dissolved oxygen and total inorganic nitrogen in the water column. The biotic indices, TUBI and ALEX, classified the ecological status of one or two stations as moderate or poor, based on the relative abundances of ecological and zoogeographic groups, respectively. A total of 21 alien species were found to be associated with the mussel bed, of which Syllis ergeni is being newly considered as a new established alien species for the Mediterranean Sea. The maximum density of associated alien species was calculated as 30,300 ind m(-2). The alien species assemblages were greatly affected by salinity and total inorganic nitrogen.
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    Nephtyidae (Annelida: Polychaeta) from the Sea of Marmara and Black Sea, with descriptions of two new species
    (Magnolia Press, 2021) Kus, Sevgi; Kurt, Guley; Cinar, Melih Ertan
    The present paper deals with the diversity of nephtyid polychaetes (Nephtyidae) from the Sea of Marmara and the Black Sea. Three species belonging to two genera (Micronephthys and Nephtys) were found in the Black Sea (coast of Turkey) and six species belonging to three genera (Inermonephtys, Micronephthys and Nephtys) were found in the Sea of Marmara. The material includes two species new to science, Inermonephtys turcica n. sp. and Nephtys sinopensis n. sp., and a species record (Nephtys kersivalensis McIntosh, 1908) new to the Sea of Marmara's marine fauna. Nephtys sinopensis n. sp. is mainly characterized by having 1-4 geniculate chaetae in the postacicular position of the parapodia; digitiform antennae, palps, and ventral cirri at chaetiger 1 with swollen tips; small and cirriform branchiae present from chaetiger 4 to the end of the body; poorly developed parapodial prechaetal lamellae in median and posterior chaetigers and long ventral cirri along the body. Inermonephtys turcica n. sp. is mainly characterized by having cushion-like palps with digitiform tips; well developed neuropodial postchaetal lamellae; barred chaetae in preacicular position of the anterior and median parapodia; and branchiae first appearing between chaetiger 3 and 13 (depending on body size).
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    New records of polychaetes (Annelida) from the Black Sea
    (Cahiers De Biologie Marine, 2019) Kurt-Sahin, Guley; Cinar, Melih Ertan; Dagli, Ertan
    The present paper includes four new records of polychaete species to the marine fauna of the Black Sea: Malmgrenia lilianae, Salvatoria cf. dolichopoda, Polydora agassizi and Aricidea (Acmira) simonae. In addition, four species, namely Pisione remota, Pterocirrus macroceros, Polydora cornuta and Saccocirrus papillocercus, are new records for the Black Sea coast of Turkey. The morphological and distributional features of the species are given.
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    Spatial distribution pattern of macroinvertebrates associated with the black mussel Mytilus galloprovincialis (Mollusca: Bivalvia) in the Sea of Marmara
    (Elsevier, 2020) Cinar, Melih Ertan; Bakir, Kerem; Ozturk, Bilal; Dogan, Alper; Acik, Sermin; Kirkim, Fevzi; Dagli, Ertan
    The present study deals with benthic community structures of mussel beds (Mytilus galloprovincialis) in the Sea of Marmara, including the canakkale and Istanbul Straits. The Sea of Marmara's mussel beds were mainly formed by small-sized mussel individuals (shell length < 4 cm). Macrobenthic species associated with the mussels support high diversity in the region, comprising 184 species belonging to 11 taxonomic groups. The annelids (38% of total number of species) were the most diverse group and arthropods (48% of total number of individuals) the most abundant. Motile species numerically dominated mussel beds at stations, while epibiont fauna were relatively low in terms of number of species and abundance. Five different species assemblages were identified in the region, which appeared to be mainly influenced by some biotic (e.g. mussel biomass, alien species) and abiotic (e.g. salinity) factors. The assemblages were mainly characterized by having high abundances of three crustacean (Jassa marmorata, Hyale schmidti and Melita palmata) and one polychaete (Platynereis dumerilii) species. Seven alien species were found at stations, of which the small-sized anthozoon Diadumene cincta accounted for 86% of total number of individuals of alien species.