Estimating overall size-selection pattern in the bottom trawl fishery for four economically important fish species in the Mediterranean Sea

2021 ◽  
Vol 209 ◽  
pp. 105653
Author(s):  
Chryssi Mytilineou ◽  
Bent Herrmann ◽  
Antonello Sala ◽  
Danai Mantopoulou-Palouka ◽  
Persefoni Megalofonou
Keyword(s):  
Mediterranean Sea ◽  
Fish Species ◽  
Bottom Trawl ◽  
Size Selection ◽  
Trawl Fishery ◽  
Selection Pattern ◽  
The Mediterranean ◽  
Important Fish

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.

On a saddled snake eel Pisodonophis semicinctus (Osteichthyes: Ophichthidae) trawled in the Strait of Sicily (Mediterranean Sea)

2000 ◽  
Vol 80 (5) ◽  
pp. 951-952 ◽  
Author(s):  
Sergio Ragonese ◽  
Giovan Battista Giusto
Keyword(s):  
Body Weight ◽  
Mediterranean Sea ◽  
Bottom Trawl ◽  
Northern Coast ◽  
Rare Finding ◽  
Strait Of Sicily ◽  
Total Length ◽  
The Mediterranean

The occurrence in the Strait of Sicily of the saddled snake eel, Pisodonophis semicinctus (Osteichthyes: Ophichthidae), a rare finding for the Mediterranean Sea, is confirmed on the basis of one specimen caught off the northern coast of Tunisia in 1991. The specimen, 800 mm in total length and 457 g in body weight (preserved condition), was captured during a commercial bottom trawl hauled at 30 m next to Cape Bon (north of Tunisia). This represents the second and fourth documented record of this Atlantic intruder within the Strait of Sicily and the Mediterranean Sea, respectively.

scholarly journals Bottom trawl catch comparison in the Mediterranean Sea: Flexible Turtle Excluder Device (TED) vs traditional gear

PLoS ONE ◽  
2019 ◽  
Vol 14 (12) ◽  
pp. e0216023
Author(s):  
Claudio Vasapollo ◽  
Massimo Virgili ◽  
Andrea Petetta ◽  
Giada Bargione ◽  
Antonello Sala ◽  
...  
Keyword(s):  
Mediterranean Sea ◽  
Bottom Trawl ◽  
Trawl Catch ◽  
The Mediterranean

scholarly journals Synchiropus sechellensis Regan, 1908 (Teleostei: Callionymidae), a new Lessepsian migrant in the Mediterranean Sea

2014 ◽  
Vol 15 (2) ◽  
pp. 440 ◽  
Author(s):  
M. GÖKOĞLU ◽  
Y. ÖZVAROL ◽  
R. FRICKE
Keyword(s):  
Mediterranean Sea ◽  
Bottom Trawl ◽  
Single Male ◽  
Male Specimen ◽  
The Mediterranean ◽  
First Time

A new Lessepsian migrant, Synchiropus sechellensis Regan, 1908 (Teleostei: Callionymidae), was recorded for the first time by a single male specimen, during bottom trawl operation in the Mediterranean Sea.

scholarly journals Indigenous versus Lessepsian Hosts: Nervous Necrosis Virus (NNV) in Eastern Mediterranean Sea Fish

Viruses ◽  
2020 ◽  
Vol 12 (4) ◽  
pp. 430 ◽  
Author(s):  
Yael Lampert ◽  
Ran Berzak ◽  
Nadav Davidovich ◽  
Arik Diamant ◽  
Nir Stern ◽  
...  
Keyword(s):  
Invasive Species ◽  
Mediterranean Sea ◽  
Marine Environment ◽  
Fish Species ◽  
Eastern Mediterranean ◽  
Nervous Necrosis Virus ◽  
Indigenous Species ◽  
Necrosis Virus ◽  
Marine Aquaculture ◽  
The Mediterranean

Viruses are among the most abundant and diverse biological components in the marine environment. In finfish, viruses are key drivers of host diversity and population dynamics, and therefore, their effect on the marine environment is far-reaching. Viral encephalopathy and retinopathy (VER) is a disease caused by the marine nervous necrosis virus (NNV), which is recognized as one of the main infectious threats for marine aquaculture worldwide. For over 140 years, the Suez Canal has acted as a conduit for the invasion of Red Sea marine species into the Mediterranean Sea. In 2016–2017, we evaluated the prevalence of NNV in two indigenous Mediterranean species, the round sardinella (Sardinella aurita) and the white steenbras (Lithognathus mormyrus) versus two Lessepsian species, the Randall’s threadfin bream (Nemipterus randalli) and the Lessepsian lizardfish (Saurida lessepsianus). A molecular method was used to detect NNV in all four fish species tested. In N. randalli, a relatively newly established invasive species in the Mediterranean Sea, the prevalence was significantly higher than in both indigenous species. In S. lessepsianus, prevalence varied considerably between years. While the factors that influence the effective establishment of invasive species are poorly understood, we suggest that the susceptibility of a given invasive fish species to locally acquired viral pathogens such as NVV may be important, in terms of both its successful establishment in its newly adopted environment and its role as a reservoir ‘host’ in the new area.

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