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    A NEW SPECIES OF CYMBASOMA (COPEPODA, MONSTRILLOIDA) FROM THE NORTHERN COAST OF TURKEY (BLACK SEA) WITH COMMENTS ON THE C. LONGISPINOSUM SPECIES-GROUP
    (Brill Academic Publishers, 2014) Ustun, F.; Kurt, T. Terbiyik; Suarez-Morales, E.
    Cymbasoma sinopense sp. nov. is described from an adult female collected off the Sinop coast, in the southern Black Sea, Turkey. This is the first species of this genus recorded from the Black Sea coast of Turkey. The new species is a member of the widespread Cymbasoma longispinosum species-group, and it closely resembles C. chelemense Suarez-Morales & Escamilla, 1997 from the Yucatan Peninsula and C. califonziense Suarez-Morales & Palomares-Garcia, 1999 from the Gulf of California. This species can be distinguished by a combination of subtle characters, including the body proportions, the structure and armature of the fifth legs, the ornamentation of the genital somite, and the relative length of the ovigerous spines. A previous report of C. longispinosum from the northern Black Sea probably represented a misidentified record of C. sinopense sp. nov. The Mediterranean reports refer to a species that is different from the one of the Black Sea. Comparative comments and data including the main taxonomic characters of members of the Cymbasoma longispinosum species-group are presented. Overall, it is confirmed that records of this species from different geographic areas should be revised carefully because they could represent undescribed species. A key for the identification of the females of the currently known species assigned to the Cymbasoma longispinosum species-group is included.
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    Adaptability and vulnerability of zooplankton species in the adjacent regions of the Black and Marmara Seas
    (Elsevier, 2011) Isinibilir, M.; Svetlichny, L.; Hubareva, E.; Yilmaz, I. N.; Ustun, F.; Belmonte, G.; Toklu-Alicli, B.
    During 2005-2008 species composition, abundance patterns, natural mortality rates and salinity effects on zooplankton were studied in the Bosphorus regions of the Black and Marmara Seas. The tendencies to diminish for abundance and biomass of the Black Sea originated zooplankton species and to increase for the proportion of their carcasses in the direction from the Black Sea toward the Marmara Sea were found. The mortality in the Black Sea species increased with depth in the Marmara Sea. The contribution of organic matter of carcasses of the Black Sea originated organisms to bacterial processes in the deep strata of the Marmara Sea was estimated. Different salinity and temperature regimes restrict mutual penetration of the species in these seas. (C) 2010 Elsevier B.V. All rights reserved.
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    Population dynamics and morphological variability of Calanus euxinus in the Black and Marmara Seas
    (Taylor & Francis Ltd, 2009) Isinibilir, M.; Svetlichny, L.; Hubareva, E.; Ustun, F.; Yilmaz, I. N.; Kideys, A. E.; Bat, L.
    Temporal and spatial changes in abundance, prosome length, oil sac volume, molting patterns and morphometric parameters were studied in Calanus euxinus from the Black and Marmara Seas. In the south-western part of the Black Sea and deep shelf zone near Sinop the abundance of C. euxinus was high during the whole studied period (2000-2005), with a maximum 23,400 ind m-2 in March 2004. In the Marmara Sea near the Prince Islands in the deep zone the mean annual abundance of C. euxinus was 47 times lower than in the deep zone of the Black Sea (during 2000-2007). However, this parameter reached a significant magnitude of 12,264 ind m-2 in spring in Izmit Bay. During the warm season, C. euxinus are rare in the Marmara Sea. The high temperature and salinity accelerate development in this species; therefore, preadults and adults possess reduced prosome length and oil sac volume. In the cold period in the Marmara Sea the size and lipid content in late copepodite stages increase, especially in Izmit Bay. Similar size of eggs, prosome length of early copepodite stages in the Black and Marmara Seas indicate that the C. euxinus population in the Marmara Sea originates from the individuals penetrating from the Black Sea through the Bosphorus.