scholarly journals Reproductive biology of Charybdis (Goniohellenus) longicollis Leene, 1938 (Brachyura: Portunidae), in the north-eastern Mediterranean Sea, Turkey

2019 ◽  
Vol 66 (2) ◽  
Author(s):  
Canan Tureli ◽  
Irem Nur Yesilyurt
Keyword(s):  
Sex Ratio ◽  
Mediterranean Sea ◽  
Eastern Mediterranean ◽  
Carapace Width ◽  
Spawning Period ◽  
The North ◽  
North Eastern ◽  
Iskenderun Bay ◽  
Ne Mediterranean ◽  
Males And Females

The swimming crab, Charybdis (Goniohellenus) longicollis Leene, 1938, is a Lessepsian migrant into the Mediterranean and little is known about its biology in Iskenderun Bay, north-eastern Mediterranean, Turkey. The size of crabs, sex-ratio and spawning period of this species was defined from 951 specimens in order to understand their reproduction and development in the NE Mediterranean Sea. The crabs were found to occur throughout the year. Carapace width (CW) ranged between 7.22 to 100.60 mm and total weight ranged from 1.34 to 164.09 g. Male-female sex ratio was 0.6:1. Highest gonado-somatic index (GSI) was seen in March and September for females and in May for males. Ovigerous females were present throughout the year, with peak spawning activity in July and September. The CW of the ovigerous female crabs ranged between 23.71 and 95.93 mm. In winter months, GSI of males and females decreased. However, spawning season of C. (G.) longicolis in Yumurtalık Cove was observed throughout the year.

scholarly journals The first Report of The Parasitic Copepod Bomolochus unicirrus (Copepoda: Bomolochidae) From Turkey

2017 ◽  
Vol 5 (4) ◽  
pp. 335
Author(s):  
İbrahim Demirkale ◽  
Argun Akif Özak ◽  
Yetkin Sakarya
Keyword(s):  
Eastern Mediterranean ◽  
Parasitic Copepod ◽  
The Other ◽  
The North ◽  
The Family ◽  
North Eastern ◽  
Iskenderun Bay ◽  
Gill Filaments ◽  
First Time ◽  
Scanning Electron

In this study, Bomolochus unicirrus Brian, 1902, a species of parasitic copepod belonging to the family Bomolochidae (Claus, 1875), was reported for the first time from the north-eastern Mediterranean waters off the Turkish coast. Parasites were collected from the gill filaments of the European barracuda, Sphyraena sphyraena(L.)captured by trawling in Iskenderun Bay, Turkey. The morphological features of B. unicirrus were Redescribed and illustrated based on the newly collected material. Key diagnostic characters and newly observed details in some structures are highlighted and supported by using scanning electron microscopy (SEM). Differences and simply overlooked details in previous descriptions of B. unicirrus, are discussed in detail. In addition, morphological comparisons between presently reported species and the other species of the genus Bomolochus Nordmann, 1832 were also presented.

First record of chlorophyte Nephroselmis pyriformis from the north-eastern Mediterranean Sea coast

2015 ◽  
Vol 8 ◽  
Author(s):  
Elif Eker-Develi
Keyword(s):  
Mediterranean Sea ◽  
Eastern Mediterranean ◽  
First Record ◽  
Live Cells ◽  
Eastern Mediterranean Sea ◽  
The North ◽  
Video Images ◽  
North Eastern ◽  
First Time ◽  
Sea Coast

Nephroselmis pyriformis(N. Carter) Ettl is reported for the first time from the north-eastern Mediterranean Sea coast. The species was isolated from the samples collected on 21 September 2013. The morphology of live cells is described based on light microscopy. Photographic and video images of the species are also presented.

Age and growth of the common guitarfish, Rhinobatos rhinobatos, in Iskenderun Bay (north-eastern Mediterranean, Turkey)

2008 ◽  
Vol 88 (4) ◽  
pp. 837-842 ◽  
Author(s):  
Nuri Başusta ◽  
Sefa Ayhan Demirhan ◽  
Erdoğan Çiçek ◽  
Asiye Başusta ◽  
Tuncay Kuleli
Keyword(s):  
Eastern Mediterranean ◽  
Growth Curves ◽  
Mediterranean Coast ◽  
Age And Growth ◽  
Pooled Data ◽  
Total Length ◽  
The North ◽  
North Eastern ◽  
Iskenderun Bay ◽  
The Common

Age and growth of the common guitarfish (Rhinobatos rhinobatos) were estimated from the north-eastern Mediterranean coast of Turkey. A total of 115 common guitarfish (66 females and 49 males) were sampled. Age determinations were carried out using vertebral sections. Alcian blue dying techniques were used to enhance the visibility of the band on vertebrae. The techniques have been used for the first time on elasmobranchs vertebrae successfully in this study. A total of 97 vertebrae of 115 were visible on the vertebral band in this study. Male and female common guitarfish ranged in age from 1 to 15 and 1 to 24 y respectively. Total length ranged from 42 to 147 cm for females and 39 to 124 cm for males.The relationships between total length (TL) and total weight (TW) were presented as TW = 0.0014*TL3.1672 (R2 = 0.98) for females, TW = 0.0012*TL3.1947 (R2 = 0.98) for males and TW = 0.0012*TL3.1915 (R2 = 0.98) for both sexes. The parameters for von Bertalanffy growth curves were estimated as Linf  = 137.70±9.38 cm, K = 0.159±0.047, to = −2.180 ± 0.90 for pooled data.

Late Mesozoic – Cenozoic evolution of the eastern Cyprus offshore

2021 ◽  
Author(s):  
Nicolò Bertone ◽  
Lorenzo Bonini ◽  
Anna Del Ben ◽  
Giuseppe Brancatelli ◽  
Angelo Camerlenghi ◽  
...  
Keyword(s):  
Mediterranean Sea ◽  
Eastern Mediterranean ◽  
Tectonic Setting ◽  
Structural Evolution ◽  
Late Mesozoic ◽  
The North ◽  
Levantine Basin ◽  
North Eastern ◽  
Seismic Reflection Profiles ◽  
Extensional Structures

<p>The present‐day tectonic setting of the Eastern Mediterranean Sea results from a long deformation history, characterized by an alternation of extensional and contractional phases: from Mesozoic rifting to Late Cretaceous-present-day compression. This study focused on the tectonic reconstruction of the north-eastern side of the Mediterranean Sea, on a sector located between the Turkish coast and the northern Levantine Basin, using seismic reflection profiles. Previous studies dealt with the recent (Neogene) evolution because they did not have enough depth of investigation to recognize deeper reflections. We used vintage data such as MS and Strakhov surveys to analyze the deeper part of the area. We interpreted and depth-converted these seismic data, and we developed a sequential restoration to reconstruct the stratigraphic and structural evolution of the study area. </p><p>In general, from north to south, we recognize the Cilicia Basin: a piggy-back basin bordered to the south by the offshore continuation of the Kyrenia Range. The Kyrenia Range is a positive flower structure generated during a transpressional phase because of the rotation of the Arabic plate. Southward, a secondary contractional system with an onlapping wedge is present in the area between the Kyrenia Range and another prominent ridge, i.e. the Larnaca Ridge. In the southern part, the same transpressional phase that generated the Kyrenia Range led to a positive inversion of an ancient extensional system, i.e. the Latakia Ridge. Beyond these positive flowers, the Levantine Basin is affected by extensional structures showing weak positive reactivation, including halokinetic features.</p><p>In summary, we found that the inherited extensional structures strongly impacted the following contractional ones affecting both their geometry and their kinematics.</p>

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