Fig 6
—Distribution of species to three frequency index values groups. —Distribución de las especies en tres grupos según los valores del índice de frecuencia.
Source publication
This study was carried out to determine crustacean fauna of rocky sub-strates along the Sinop Peninsula coast of Black Sea. As investigation zones for the samples 8 stations were chosen from the supra-, medio-and infralitoral. Samples were collected seasonally. As a result of qualitative analyses of the samples, a total of 66 species and 26777 spec...
Citations
... present in the eu-littoral and infra-littoral zone at Karakum shores of Sinop provincial (Fig. 1). Considering the species dominance, Hyale crassipes was of the most representative species in Karakum shores of Sinop (Sezgin and Aydemir Çil, 2010). Amphipod samples were transported to the laboratory in sea water from the collection site and acclimated in a holding tank for a weekat 16°C ± 2°C, 17‰ salinity, pH at 8.1 ± 0.2 under a 12:12 hour at light: dark regime.In the tank an excess of food was available in the form of algae Ulva sp. and organic detritus for amphipods. ...
Acute toxicity tests were performed on Hyale crassipes from Karakum shores of Sinop Peninsula in the Black Sea. 24, 48, 72 and 96-h LC 50 values were estimated for copper, cadmium and zinc using static bioassay method. This study was the first toxicity study with Hyale crassipes and showed that the species was very sensitive to metals. The results indicated that Cu was more toxic to the species followed by Cd and Zn. Clearly, Hyale crassipes has potential as test species for toxicity studies in Turkish waters.
... The genus Siriella is one of the largest groups of Mysida, inhabiting all the coasts around the world. S. jaltensis is widely distributed throughout the Mediterranean Sea (Ledoyer, 1965;Moscatello and Belmonte, 2007); the Black Sea (Sezgin and Aydemir Çil, 2010); the North Atlantic (Cunha et al., 1999); the Bay of Biscay (Sorbe, 1984), the English Channel and the Seine Estuary (Zouhiri et al., 1998); the Moroccan Coast and the Madeira Islands (Wittmann and Wirtz, 1998); and in the West Pacific and Indian Oceans (Murano and Fukuoka, 2008). However, knowledge remains relatively incomplete regarding their population dynamics and reproductive biology. ...
This work is focused on the study of some aspects of the population structure and reproductive biology of the mysida Siriella jaltensis in the Ebre Delta, Western Mediterranean. The samples were collected monthly in Sant Carles de la Ràpita Harbor between June 2010 and March. The S. jaltensi s population comprised two main individual size categories: large winter individuals and small summer individuals. The sex ratio (number of females / number of males), as calculated from the complete data set, was not significantly different from 1. However, the sex ratio fluctuated throughout the sampling period. Demographic data suggest that S. jaltensi s produces several generations per year in the Ebre Delta which it is characterized by a combination of early individual maturation (in spring and summer), continuous reproduction all year round, iteroparous females and relatively high fecundity (mainly during late spring and summer). The number of eggs per female was related to size, as well as the number of nauplioids and postnauplioids. The volume of the eggs was also related to the size of the females. The egg size of medium-sized females, who are present in summer and winter, is related to the temperature. Larger eggs, in winter, produce larger juveniles which are probably more resistant. This is a strategy commonly used by species of peracarids in ecosystems in which the mortality is greater in the early juvenile stages.
... В природных сообществах эти ракообразные ведут скрытный образ жизни, прячась под камнями или в других укрытиях. В сообществе обрастания среди друз мидий, переплетенных густой сетью нитей биссуса, они часто находят себе пищу и убежище [9,10]. ...
Seasonal changeability of development of Lekanesphaera monodi (Arcangeli, 1934) (Crustacea, Isopoda) in the fouling community of the Odessa Bay, Black Sea. A.Yu. Varigin. The seasonal changes of quantitative development of Lekanesphaera monodi in the fouling community of the Odessa Bay, Black Sea are shown. The variability of parameters of abundance and biomass of the crustaceans are depended on their breeding cycle. The intensive reproduction of this species occurred in summer. The greatest biomass of L. monodi are noted in June, when adult breeding individuals are dominated, and the greatest abundance – in July, when the population are massively updated by juveniles. The massive migrations of L. monodi from the coastal zone to the deeper water layers are recorded in winter.
... Обычно эти ракообразные обитают в условиях солоноватоводных лагун и приустьевых районов моря среди зарослей водорослей и морских трав (Makkaveeva, 1979; Diviacco and Bianchi, 1987; Marzano et al., 2003; Marzano et al., 2007; Karacuha et al., 2009; Son et al., 2010 ). В сообществе обрастания как естественных, так и искусственных твердых субстратов среди мидий и макрофитов E. olivii находит себе пищу и убежище (Kalkan et al., 2006Kalkan et al., , 2007 Teaca, 2006; Sezgin and Aydemir, 2010; Kovaleva et al., 2014). Как и другие прибрежные формы, E. olivii обладает широким спектром адаптаций к жизни в условиях часто изменяющихся абиотических факторов среды. ...
The sexual structure of Echinogammarus olivii (Milne-Edwards, 1830) population in the fouling community of Odessa Bay ( Black Sea ) has been determined. It is shown that t he annual dynamics of sexual structure is conditioned by the peculiarities of the breeding cycle of this species in the coastal fouling community. Throughout the year quantitative pre vale nce of females over males was recorded . E. olivii breeding process takes place throughout the year. Peak of the breeding of this species falls within the early spring when the water temperature reaches 10 °C. During the period of mass reproduction of crustaceans , sex ratio in the population is aligned . In this time the number of ovigerous females reaches 96% of the total. At the end of mass reproduction process the previous generation of adults die. Males eliminate earlier than females. In this period up to six females fall on one male. In early summer, 79% of population of these crustaceans comprise young immature species . In late summer, E. olivii , avoiding overheating, migrate from the coastal zone in the deeper layers and less warmed water. In the autumn crustaceans return to the coastal zone of the sea. At the same time , they reach sexual maturity and a re ready for a new cycle of reproduction. In the Black Sea this species can produce up to four generations per year. In winter, when water temperature is lower , sex ratio in the population of crustaceans is aligned again . Maximum absolute fe rtil ity of females E. olivii in the fouling community of Odessa Bay i s equal to 31 eggs. The relationship of this parameter with length and weight of the crustaceans is shown. Coefficients of the equations of the dependence of wet to dry weights of males, oviparous and non - oviparous females of E. olivii on their length are presented. Absolute fe rtility parameters growth with increasing size of crustaceans females has been detected .
... Questionable and misidentified marine arthropod species along the coasts of Turkey.Armadilloniscus littoralis Budde-Lund, 1885A terrestrial species that can be found in the supralittoralGeldiay and Kocataş, 1972b; Kırkım et al., 2005;Kırkım et al., 2006;Sezgin and Aydemir Çil, 2010 Asellus aquaticus (Linnaeus, 1758) Considered as freshwater speciesBat et al., 2000; Kırkım et al., 2005;Kırkım et al., 2006 Halophiloscia couchii (Kinahan, 1858) A terrestrial species that can be found in the supralittoralKırkım et al., 2006;Sezgin and Aydemir Çil, 2010 ...
... Questionable and misidentified marine arthropod species along the coasts of Turkey.Armadilloniscus littoralis Budde-Lund, 1885A terrestrial species that can be found in the supralittoralGeldiay and Kocataş, 1972b; Kırkım et al., 2005;Kırkım et al., 2006;Sezgin and Aydemir Çil, 2010 Asellus aquaticus (Linnaeus, 1758) Considered as freshwater speciesBat et al., 2000; Kırkım et al., 2005;Kırkım et al., 2006 Halophiloscia couchii (Kinahan, 1858) A terrestrial species that can be found in the supralittoralKırkım et al., 2006;Sezgin and Aydemir Çil, 2010 ...
This recent checklist of marine arthropods found on the coasts of Turkey represents a total of 1531 species belonging to
7 classes: Malacostraca (766 species), Maxillopoda (437 species), Ostracoda (263 species), Pycnogonida (27 species), Arachnida (26 species), Branchiopoda (7 species), and Insecta (5 species). Seventy-five species were classified as alien species in the region. This paperalso includes the first record of the amphipod Melita valesi from the Levantine coast of Turkey (Kaş, Gulf of Antalya).
n Memoriam: Prof. Dr. Murat SEZGİN (1974-2017)
We lost our dear friend Prof. Dr. Murat Sezgin, a faculty member of Sinop University, Facultyof Fisheries, Department of Marine Biology, Department of Basic Sciences of Fisheries, on 28.07.2017. Prof. Dr. Sezgin was a valuable scientist who specialized in the biology and ecology of Crustacea and the taxonomy of Amphipoda. He made significant contributions to the development of the benthology laboratory at Sinop University, Faculty of Fisheries with his thesis and various projects on macrobenthic invertebrates.He born in 1974 in Pütürge, Malatya, Dr. Sezgin graduated from Ondokuz Mayıs University,Faculty of Fisheries in 1991 and started his undergraduate studies. In 1995, Dr. Sezgin started his master's degree under the supervision of Prof. Dr. Arif Gönülol and completed his master's thesis on "A research on Amphipoda (Crustacea) species in the supra, medio and upper infralittoral zones of the Sinop Peninsula coast"
It is becoming increasingly important to monitor zoobenthic biodiversity in seas that are under industrial and anthropogenic pollution pressure, such as the Black Sea and the Marmara Sea. This study covers crustacean species in the Turkish waters of the Black Sea and the Marmara Sea, both of which are closed systems. Sampling was carried out in July–August 2019 and yielded 32 crustacean species from the Black Sea and 77 species from the Marmara Sea. In the Marmara Sea, two species [ Kupellonura mediterranea and Leucon ( Macrauloleucon ) siphonatus ] represent new records for the Turkish waters, and 12 species [ Cirolana cranchii , Cumella ( Cumella ) pygmaea, Cyathura carinata , Cymodoce truncata , Eurydice pulchra , Gammaropsis sophiae , Harpinia truncata , Iphinoe serrata , Iphinoe trispinosa , Liocarcinus pusillus , Nebalia strausi and Synchelidium maculatum ] are new to the Marmara Sea. The following species: Gammaropsis palmata , Pontocrates arenarius , and Synchelidium haplocheles are new records for the Black Sea. The order Amphipoda dominated in both seas in terms of the number of species and the number of individuals.
The sex ratio at the different phenotypes of Lekanesphaera monody (Arcangeli, 1934) (Crustacea, Isopoda) in the fouling community of the Odessa Bay, Black Sea. – A.Yu. Varigin – The sex ratio at the different phenotypes of isopods Lekanesphaera monodi in the fouling community of the coastal zone of Odessa Bay, Black Sea are identified. The ratio of males and females in the five phenotypes L. monody (uniformis, maculosa, lineata, albus and rubrum), living on the surface of the underwater hydrotechnical structures in three areas of the bay at a depth of 1 to 2,5 m in conditions of varying degrees of water exchange with the open sea are determined. The variability in the sex ratio at L. monodi at the transition from the open water area to the half-closed with a difficult water exchange is established. The sex ratio among different phenotypes L. monodi depends on the specific environmental conditions in the fouling community of Odessa Bay, Black Sea. The greatest number of males observed in the first open area among individuals phenotype lineata. The second and third parts of most males were among individuals phenotypes maculosa and uniformis, respectively. The incidence of these three phenotypes was highest in all the areas studied. In the transition from the open area to area with the release of drainage water, and then – to the half-closed, the total share of these phenotypes was increased from 84,5 to 88,6 and 91%, respectively. At the same time, phenotypes albus and rubrum were quite rare. Their occurrence in the same range of districts respectively decreased from 15,5 to 11,4 and 9%. In all areas studied quantitatively females prevailed over males. The largest relative number of females was found among the phenotype maculosa, and males – among individuals of phenotypes lineata, maculosa and uniformis. Among individuals of phenotypes albus and rubrum to one male had between two and three females. Coloration of the integument of L. monodi has an adaptive character. All five investigated phenotypes inconspicuous on the general background of fouling communities, allowing them to avoid predators.
Research surveys were conducted in a protection area between June and September 2008 along the coast of Fethiye Bay, Turkey. A total of 999 specimens of isopods belonging to 15 families and 41 species were captured at 82 localities with depths ranging between 0 and 30 m from various substrates. Of these, 25 species (Cleantis prismatica, Astacilla longicornis, Apanthura corsica, Jaera hopeana, Janira maculosa, J. nordmanni, Bopyrus squillarum, Cirolana cranchii, Eurydice affinis, Cymodoce emarginata, C. hanseni, C. tuberculata, C. spinosa, Dynamene bifida, D. edwardsi, D. magnitorata, Ischyromene lacazei, Lekanesphaera monodi, Sphaeroma walkeri, Joeropsis brevicornis littoralis, Limnoria lignorum, Paranthura nigropunctata, Synischia hectica, Stenosoma capito, Halophiloscia couchi) were new records from the Levantine Sea coast of Turkey. The most abundant species found in Fethiye Bay were Ligia italica, J. hopeana and J. maculosa.
The beach flea Orchestia stephenseni was originally described by Cecchini (1928), and successively by Karaman (1973). The description of this species will be herein revised by focusing on the variation of the gnathopod 2 in males, as detected during its growth period. An analysis of DNA Barcoding was performed to support the assignment of the taxonomic species to five morphotypes. As the type specimen has not yet been designated, a neotype is assigned. The name of the species is here presented as a valid name as it satisfies the requirements of a Reversal of the Principle of Priority: Orchestia stephenseni takes precedence over the objective synonym Orchestia constricta A. Costa, 1853, in accordance with Article 23.9.2. of the International Code of Zoological Nomenclature. Orchestia stephenseni Cecchini, 1928 becomes nomen protectum, and Orchestia constricta nomen oblitum. The results presented in this paper also support the status of Orchestia stephenseni as a Mediterranean endemic species, thereby rejecting previous Atlantic records. The synonymies for O. stephenseni are revised accordingly.
