Lessepsian migrants expanding their distributional ranges; Pseudonereis anomala (Polychaeta: Nereididae) in Izmir Bay (Aegean Sea)

2005 ◽  
Vol 85 (2) ◽  
pp. 313-321 ◽  
Author(s):  
Melih Ertan Çinar ◽  
Zeki Ergen
Keyword(s):  
Shallow Water ◽  
Eastern Mediterranean ◽  
Aegean Sea ◽  
Hard Substratum ◽  
Izmir Bay ◽  
Lessepsian Migrants

A total of ten specimens of Pseudonereis anomala (Polychaeta: Nereididae) were collected on the shallow water hard substratum (0·2 m) at four stations located in the inner part of Izmir Bay (Aegean Sea, eastern Mediterranean) in January 2004. The absence of this species among the material collected previously at the same stations might suggest that it has recently become established in the area. A re-description of the species together with its ecological, reproductive, feeding and distributional aspects are provided.

Soft-bottom sipunculans in Izmir Bay (Aegean Sea, eastern Mediterranean)

Zootaxa ◽  
2009 ◽  
Vol 2136 (1) ◽  
pp. 40-48 ◽  
Author(s):  
SERMIN AÇIK
Keyword(s):  
Eastern Mediterranean ◽  
Aegean Sea ◽  
Posidonia Oceanica ◽  
Soft Bottom ◽  
Muddy Sand ◽  
Izmir Bay ◽  
Ecological Characteristics

This paper deals with the sipunculan species distributed in Izmir Bay (Aegean Sea, eastern Mediterranean). Benthic samples were taken at 29 stations between 1998 and 2001 at depths ranging from 8 to 77 m. Six species and 200 individuals belonging to three families were found. Aspidosiphon (A.) mexicanus is newly recorded from Izmir Bay. The majority of specimens were found on a sandy-mud substratum (42%), followed by sand (35%), muddy-sand (19%) and sand (3%), respectively. Among the habitats, Posidonia oceanica and muddy-sand were represented by the highest numbers of species (4 species), followed by sandy-mud (3 species), and sand (2 species). The densities of the species at sampling stations were determined and compared seasonally, based on the data collected in 2001. Brief descriptions of the species and their distributional, reproductive and ecological characteristics are given.

scholarly journals First occurrence of the invasive alien species Polydora cornuta Bosc, 1802 (Polychaeta: Spionidae) on the coast of Greece (Elefsis Bay; Aegean Sea)

2008 ◽  
Vol 9 (2) ◽  
pp. 119 ◽  
Author(s):  
N. SIMBOURA ◽  
K. SIGALA ◽  
E. VOUTSINAS ◽  
E. KALKAN
Keyword(s):  
Alien Species ◽  
Invasive Alien Species ◽  
Eastern Mediterranean ◽  
Aegean Sea ◽  
Izmir Bay ◽  
First Finding ◽  
First Occurrence ◽  
The Mediterranean ◽  
Of Greece

The present study reports on the occurrence of two specimens of the alien species Polydora cornutaBosc, 1802, in Elefsis Bay, the Saronikos Gulf (Aegean Sea, eastern Mediterranean). This is the firstrecord of this invasive alien species on the coast of Greece and the second report in the eastern MediterraneanSea after its first finding in Izmir Bay (on the Turkish Aegean coast). This finding enhances its distributionalpattern within the Mediterranean

scholarly journals Sponge species from ports of the inner and middle parts of İzmir Bay (Aegean Sea, Eastern Mediterranean)

2020 ◽  
Vol 37 (2) ◽  
pp. 149-155 ◽  
Author(s):  
Alper EVCEN ◽  
Melih Ertan ÇINAR
Keyword(s):  
Alien Species ◽  
Invasive Alien Species ◽  
Eastern Mediterranean ◽  
Aegean Sea ◽  
Sponge Species ◽  
Izmir Bay ◽  
First Time ◽  
Hard Substrata

Four sponge species (Sycon raphanus, Sycon ciliatum, Paraleucilla magna and Dysidea fragilis) were found on artificial hard substrata of several ports in the inner and middle parts of Izmir Bay. The invasive alien species Paraleucilla magna, is being recorded for the first time from the Aegean coast of Turkey. It was very abundant almost at all studied ports, covering up to 35% of the sampled surfaces. The morphological and distributional features of the four species are described.

Eco-geochemical dynamics of a shallow-water hydrothermal vent system at Milos Island, Aegean Sea (Eastern Mediterranean)

2013 ◽  
Vol 356 ◽  
pp. 11-20 ◽  
Author(s):  
Mustafa Yücel ◽  
Stefan M. Sievert ◽  
Costantino Vetriani ◽  
Dionysis I. Foustoukos ◽  
Donato Giovannelli ◽  
...  
Keyword(s):  
Shallow Water ◽  
Hydrothermal Vent ◽  
Eastern Mediterranean ◽  
Aegean Sea

Spatio-temporal distributions of zoobenthos in soft substratum of Izmir Bay (Aegean Sea, eastern Mediterranean), with special emphasis on alien species and ecological quality status

2012 ◽  
Vol 92 (7) ◽  
pp. 1457-1477 ◽  
Author(s):  
Melıh Ertan Çinar ◽  
Tuncer Katagan ◽  
Bılal Öztürk ◽  
Kerem Bakir ◽  
Ertan Dagli ◽  
...  
Keyword(s):  
Community Structure ◽  
Alien Species ◽  
Eastern Mediterranean ◽  
Aegean Sea ◽  
Depth Range ◽  
Biotic Indices ◽  
Izmir Bay ◽  
Number Of Species ◽  
Pollution Indicator ◽  
Quality Status

The soft-bottom zoobenthic community structure of Izmir Bay was examined seasonally at eight stations (depth-range: 19–67 m) in 2009. A total of 427 species were found. Polychaeta had the highest number of species (50% of total species) and individuals (75%), whereas Echinodermata possessed the highest biomass (47%). The number of species varied from 3 to 79 (0.1 m−2), the density from 60 to 5360 ind.m−2, and the biomass from 1 to 530 g.m−2. The most numerically dominant species were the polychaetesAricidea claudiae, Streblospio gynobranchiata, Levinsenia demiriandSternaspis scutata. The distribution of zoobenthos was strongly related to spatial differences in total organic carbon, sediment texture and depth among different regions of the bay rather than temporal differences among seasons. However, significant seasonal variability in community structure (mainly differences in the relative abundance of species) was present. The inner region of the bay can be classified as ‘poor’ or ‘bad’ based on the results of biotic indices (H′, AMBI, m-AMBI and BENTIX). Among biotic indices, only H′ and m-AMBI appeared to be capable of explaining the bay's benthic quality status. Thirteen alien species were also found.Streblospio gynobranchiata, Prionospio pulchra, Pseudopolydora paucibranchiataandPolydora cornutaformed dense populations in the inner most polluted part of the bay and are considered to be new pollution indicator species in the eastern Mediterranean Sea.

Nebalia kocatasi sp. nov., a new species of leptostracan (Crustacea: Phyllocarida) from Izmir Bay (Aegean Sea, eastern Mediterranean)

2007 ◽  
Vol 87 (5) ◽  
pp. 1247-1254 ◽  
Author(s):  
Juan Moreira ◽  
Cengiz Kocak ◽  
Tuncer Katagan
Keyword(s):  
New Species ◽  
Eastern Mediterranean ◽  
Aegean Sea ◽  
Lateral Face ◽  
The Other ◽  
Posterior Border ◽  
Izmir Bay ◽  
The Third ◽  
Terminal Seta ◽  
A New Species

Nebalia kocatasi sp. nov. (Crustacea: Leptostraca) is described from specimens collected off the coast of Turkey (Aegean Sea). The new species differs from the other known species of the genus in having a rostrum about 2.4 times as long as wide, the antennular scale is twice as long as wide, the third article of the antennule has up to four short distal spines, the third article of the antenna has three robust spines on the external lateral face, the two distalmost being the longest, the endopod of the second maxila is composed of two sub-equal articles, the exopod of the second maxilla is as long as the first article of the endopod, pleonites 6–7 have pointed denticles along the posterior dorsal borders, the protopod of pleopod 4 has 2–3 serrations along the posterior border and the terminal seta of the caudal furca is about twice the length of rami. This is the second leptostracan species reported to date from the eastern Mediterranean.

Ecological features of Syllidae (Polychaeta) from shallow-water benthic environments of the Aegean Sea, eastern Mediterranean

2003 ◽  
Vol 83 (4) ◽  
pp. 737-745 ◽  
Author(s):  
Melih Ertan Çinar
Keyword(s):  
Shallow Water ◽  
Eastern Mediterranean ◽  
Similarity Index ◽  
Aegean Sea ◽  
Posidonia Oceanica ◽  
Multivariate Statistical ◽  
Bare Sand ◽  
Ecological Features ◽  
Index Value ◽  
High Consistency

Ecological features of Syllidae inhabiting shallow-water benthic habitats of the Aegean Sea were analysed by utilizing some univariate and multivariate statistical methods. A total of 121 benthic materials collected in a variety of substrata and depths (0–76 m) contained 90 syllid species belonging to the four subfamilies Autolytinae, Exogoninae, Eusyllinae and Syllinae. Among the subfamilies, Syllinae were characterized by a high number of species and Exogoninae by a high number of individuals. Although dominant species varied according to substrata, the two species, Grubeosyllis clavata and Syllis prolifera, accounted for up to 51% of the total syllid populations in the area. Among the biotopes sampled, Posidonia oceanica seems to be particularly suitable for the settlement of syllid species, whereas bare sand and mud harbour only a few species, mainly Exogoninae. The cluster- and ordination analyses detected species associations on soft and hard substrata, and suggested that syllid assemblages are strongly affected by the habitat structure. Species compositions associated with algae appear to be related to complexity of the algae, so that the ones with relatively small thalli, such as Padina pavonica and Halopteris spp., constituted a group with a high similarity-index value. Samples of Posidonia oceanica collected at different stations showed a high consistency in terms of syllid assemblages.

Reproductive biology of the mediterranean green crab Carcinus aestuarii Nardo, 1847 (Crustacea, Brachyura, Portunidae) in Homa Lagoon, Aegean Sea, Turkey

2012 ◽  
Vol 41 (4) ◽  
Author(s):  
Murat Özbek ◽  
Cengiz Koçak ◽  
Deniz Acarlı
Keyword(s):  
Eastern Mediterranean ◽  
Carapace Width ◽  
Aegean Sea ◽  
Green Crab ◽  
Shallow Waters ◽  
Regression Analyses ◽  
Izmir Bay ◽  
Wet Weight ◽  
The Mediterranean ◽  
Fyke Nets

AbstractThe Mediterranean green crab Carcinus aestuarii Nardo, 1847 (Crustacea, Brachyura, Portunidae) is a common inhabitant of the shallow waters of Homa Lagoon in Izmir Bay, Turkey, in the eastern Mediterranean. Monthly samples were collected in Homa Lagoon from June 2006 to May 2007 using trammel nets, fyke nets, beach seines and fence traps. In total, 608 males and 559 females of C. aestuarii were collected. The highest sex ratio (81–86% females) was recorded between October and December, and in August (58% females). Ovigerous females were obtained only from November to February with the highest ratio of ovigerous females (55%) observed in January 2007. The maturation curve presenting the carapace width showed that 50% of female crabs with the carapace width of 26.84 ±1.58 mm (r= 0.72) were physiologically mature. Regression analyses indicated that the number of eggs was positively correlated with carapace width and wet weight (P < 0.05, in both cases).

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