scholarly journals Age, growth, reproduction and mortality of Red Mullet (Mullus barbatus ponticus Essipov, 1927) from the Turkish coasts of the Black Sea

2019 ◽  
Vol 36 (1) ◽  
pp. 41-47 ◽  
Author(s):  
Bülent Yılmaz ◽  
Osman Samsun ◽  
Okan Akyol ◽  
Yakup Erdem ◽  
Tevfik Ceyhan
Keyword(s):  
Black Sea ◽  
The Black Sea ◽  
Red Mullet ◽  
Mullus Barbatus

scholarly journals Age, Growth and Gonado-somatic Index of the Red Mullet (Mullus barbatus ponticus Essipov, 1927) in the Eastern Black Sea coast of Turkey

2019 ◽  
Vol 7 (2) ◽  
pp. 186
Author(s):  
Erhan Çiloğlu ◽  
Şevkiye Akgümüş
Keyword(s):  
Sex Ratio ◽  
Black Sea ◽  
The Black Sea ◽  
Fishing Gear ◽  
Red Mullet ◽  
Mullus Barbatus ◽  
Black Sea Coast ◽  
Somatic Index ◽  
Sea Coast ◽  
Closed Season

In this study, the age, growth, and gonado-somatic index (GSI) of the Red mullet (Mullus barbatus ponticus Essipov, 1927) from the Eastern Black Sea coast of Turkey were examined. A total of 1466 M. barbatus ponticus were sampled between September 2010 and August 2011 from trammel net landings in Rize. The total length of Red mullet ranged from 7.42 cm to 17.80 cm and weight ranged from 9.59 g to 50.93 g, regardless of the sex. The sex ratio (♂/♀) was 0.46, with almost twice more females than males. The growth performance of M. barbatus ponticus in the study area is similar to that of the western populations of the same sub-species. A closed season of at least three months (from May to July) banning the use of even the stationary fishing gear will be beneficial for the sustainable stock of management of M. barbatus ponticus in the Black Sea.

Morphology and molecular phylogeny of Ortholinea mullusi sp. nov. (Myxozoa) in Mullus barbatus from the Black Sea

2018 ◽  
Vol 127 (2) ◽  
pp. 117-124 ◽  
Author(s):  
CT Gürkanlı ◽  
S Okkay ◽  
Y Çiftçi ◽  
V Yurakhno ◽  
A Özer
Keyword(s):  
Molecular Phylogeny ◽  
Black Sea ◽  
The Black Sea ◽  
Mullus Barbatus

scholarly journals Assessment of goatfish fisheries in Turkey based on the microdata set of official landing statistics

2021 ◽  
Vol 38 (3) ◽  
pp. 303-309
Author(s):  
Nuray Çelik Mavruk ◽  
Sinan Mavruk ◽  
Dursun Avşar
Keyword(s):  
Mediterranean Sea ◽  
Black Sea ◽  
Large Scale ◽  
Aegean Sea ◽  
Bottom Trawl ◽  
The Black Sea ◽  
Marmara Sea ◽  
Trawl Fishery ◽  
Red Mullet ◽  
The Mediterranean

Although goatfishes (Mullidae Rafinesque, 1815) are among the most important commercial fishes in Turkey, no research has been found investigating the characteristics and spatial patterns of goatfish fishery. Here, we assessed the goatfish fishery of Turkey based on the microdata set of Turkish National Fishery Statistics gathered by Turkish Statistical Institute (TÜİK) between 2014 and 2017. In this context, we investigated the variation of total goatfish catch by cities. In addition, we compared the contribution of small (boat <10m) and large scale (boat >10m) fishers as well as different fishing techniques to the total goatfish catch in Turkey. Finally, an evaluation was made on the discard rates recorded in the official landing statistics. The results showed that higher red mullet (Mullus barbatus Linnaeus, 1758) catch was reported in the eastern Mediterranean, whereas surmullet (Mullus surmuletus Linnaeus, 1758) catch was significantly higher in the western Black Sea. On the other hand, fishery-independent investigations revealed that the Turkish fishery fleet mostly catches red mullet throughout the coasts of Turkey. Therefore, the separate records of red mullet and surmullet in the landing statistics likely represent the local names of red mullet rather than two different species. Large scale fishers were the main source of fishery pressure in the Mediterranean Sea, the Aegean Sea and the Black Sea. However, the majority of the catch was landed by small scale fishers in the Marmara Sea. The bottom trawl fishery landed 88, 92 and 87% of total goatfish catch in the Black Sea, the Aegean Sea and the Mediterranean Sea, respectively. Purse seiners provided the largest part of total goatfish catch (40%) in the Marmara Sea, where the bottom trawl fishery is prohibited. The overall average for the discard rate was found to be 0.47%. There were no statistically significant differences among the discard rates of two species, marine regions or fishing methods.

scholarly journals Organochlorine pesticides and PCBs in marine fish

2012 ◽  
Vol 23 (1) ◽  
pp. 92-98 ◽  
Author(s):  
Stanislava Georgieva ◽  
Mona Stancheva ◽  
Lubomir Makedonski
Keyword(s):  
Organochlorine Pesticides ◽  
Black Sea ◽  
Muscle Tissue ◽  
Marine Ecosystem ◽  
Marine Species ◽  
Gas Chromatography Mass Spectrometry ◽  
The Black Sea ◽  
Red Mullet ◽  
Wet Weight ◽  
Belone Belone

Abstract Organochlorine pesticides (such as 1,1,1-trichloro - 2,2 - bis (4-chlorophenyl) ethane (DDT) and its metabolites) and polychlorinated biphenyls (PCBs) are classified as Persistent Organic Pollutants (POPs) and are present in the contamination pattern of marine environments world-wide. Concentrations of PCBs and DDTs were measured in two marine species: garfish (Belone belone) and red mullet (Mullus barbatus). Samples were collected from Black Sea, Bulgaria during 2007 - 2010. The DDTs and PCBs were determined by gas chromatography - mass spectrometry. Concentrations in muscle tissue of garfish ranged from 80.89 to 118.04 ng/g wet weight for total DDTs. DDTs concentration in red mullet was found 104.59 ng/g ww. PCB concentrations in garfish varied in the range of 40.04 and 65.62 ng/g ww. In muscle tissue of red mullet PCB concentrations were found 34.12 ng/g ww. The levels of DDTs and PCBs in garfish and red mullet from the Black Sea were comparable with those found in other marine ecosystem.

scholarly journals Influence of Climatic Factors on the Interannual Changes of Gonadosomatic Index of the Red Mullet Mullus barbatus ponticus in the Coastal Crimean Waters

2020 ◽  
Vol 31 ◽  
pp. 10-19
Author(s):  
Elena B. Melnikova ◽  
Natalya S. Kuzminova
Keyword(s):  
Coastal Waters ◽  
Climatic Factors ◽  
Gonadosomatic Index ◽  
Size Composition ◽  
The Black Sea ◽  
Average Temperature ◽  
Red Mullet ◽  
Mullus Barbatus ◽  
The Crimea ◽  
Developmental Features

The analysis of the influence of climatic factors on the interannual changes of the gonadosomatic index (GSI) of the red mullet Mullus barbatus ponticus, which inhabits the coastal waters of Crimea, was carried out. The dependence of the development of the reproductive system of the red mullet, determined by the gonadosomatic index, on temperature was revealed. It was found that the correlation coefficient between changes in the average temperature during the spawning and the GSI index is r = 0.98 for females and r = 0.97 for males. The maximum monthly average GSI values were observed in females and males of the M. barbatus ponticus, accordingly, in June, 4.29 and 3.76% and in July – 4.83 and 4.17%. An analysis of the size composition of the fish showed that the females are larger than males. For females, the predominant size group is 10.0–11.0 cm, and for males 9.0–10.0 cm. It was found that the red mullet, living in the coastal waters of the Crimea, has a slight positive allometric growth. A comparison in the developmental features of the red mullet that lives in different regions of the Black Sea-Mediterranean basin was made and the differences in the change in the GSI and other parameters are analyzed.

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