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Publications (25)
The purpose of this study was the analysis of spatio-temporal variations of length, total mass and the Fulton condition factor (useful index for monitoring feeding intensity) as well as of the length-total mass relationship, which is an important parameter, which helps to know the growth pattern of fish populations. A number of 1200 individuals fro...
Romanian small scale fisheries are practiced along the Black Sea coast in five fishing ports (Sulina, Cape Midia, Tomis, Constanta and Mangalia) and other 18 small fishing stations, located between Sulina-Vama Veche, at depths ranging between 2-20 m and sometimes up to 50 m, when practicing specialized turbot fisheries. Of significant importance is...
Knowing the diet composition of a fish species provides a key to understanding their place in the marine food web. Between May 2021 and September 2022, 120 stomachs of horse mackerel with sizes between 8.0 and 15.5 cm (average length 11.43±1.35 cm), were sampled and analyzed. The identified prey were: fish (Engraulis encrasicolus-anchovy), copepods...
Romanian small-scale fisheries are practiced along the Black Sea coast in five fishing ports (Sulina, Cape Midia, Tomis, Constanta and Mangalia) and 18 other small fishing stations, located between Sulina-Vama Veche, at depths ranging between 2-20 m and sometimes up to 50 m, when practicing specialized turbot fisheries. Of significant importance is...
The aim of this study is to provide an overview of the Gaidropsarus mediterraneus (Linnaeus, 1758) species growth pattern from the Romanian Black Sea Coast, in the year 2023. This has been accomplished by studying the length-weight relationship, an important parameter, which helps to know the growth pattern of fish populations, Fulton's condition f...
The Black Sea Rapa whelk (Rapana venosa, Valenciennes 1846) is, on one hand, a non-indigenous species harming Black Sea benthic ecosystem and on the other hand, since its ever-expanding stock found market in the Far East, one of the most profitable in the basin. For this purpose, the Working Group on the Black Sea (WGBS) under General Fisheries Com...
The appropriate segmentation of fishing fleets is controversially discussed in fisheries research and management and a variety of approaches has been introduced. The present approach, developed in a pilot study funded by the European Commission – Data Collection Framework (DCF), introduces a standardized multivariate approach for characterizing fis...
With the growth of the human population, the need for food resources increases, so the pressure on living marine resources also increases. In addition to this aspect, the Black Sea ecosystem during recent decades suffered changes that determined the deterioration of all components of the marine ecosystem, which had direct impact on decreasing the b...
The European Common Fisheries Policy aims to gradually eliminate discards in all European Union fisheries through the introduction of a landing obligation for all catches of species subject to catch limits (turbot and sprat for the Black Sea). In 2016, the Commission established a discard plan for turbot fisheries in the Black Sea, that provided fo...
The species Trachurus mediterraneus (Steindachner, 1868), mediterranean horse mackerel, is of significant importance for the commercial fishing sector in Romania. Information on the age of fish species significantly improves the quality of studies on population characteristics such as growth, recruitment, mortality and reproduction. Also, this info...
The appropriate segmentation of fishing fleets is controversially discussed in fisheries research and management and a variety of approaches has been introduced. The present approach, developed in a pilot study funded by the European commission – Data Collection Framework (DCF), introduces a standardized multivariate approach for characterizing fis...
Our second workshop on a newly developed, alternative approach to the segmentation of fishing fleets was held from 28th to 30th of March 2022. Due to travel restrictions caused by the global Covid-19 pandemic, the workshop took place online. Cisco Webex provided the online platform. The workshop was hosted by the Thünen Institute for Sea, Fisheries...
Due to the current situation when we observe numerous climate changes, manifested by rising air and seawater temperatures, there have been observed also, changes in recent years regarding the biology aspects of some fish species from the Romanian Black Sea coast. Trachurus mediterraneus (Steindachner, 1868)-horse mackerel, having economic importanc...
In the context of climate change observed in recent decades and taking into account the Danube input from the northern part of Romanian Black Sea waters, a research survey was conducted in order to obtain data regarding the ichthyofauna structure. During the survey conducted with the research vessel "Steaua de Mare 1" in 2019, 20 pelagic hauls and...
"Living marine resources obviously contribute to the survival of humanity. Unfortunately, numerous studies highlighted that marine biological diversity faces various threats related to overfishing and illegal fishing, pollution (marine and terrestrial), invasive species, marine litter and climate change. In this context, the incidental catch of vul...
Spawning is the most critical stage in the life cycle of a species,on which its perpetuation depends. Given the context generated by climate change, manifested by rising air and seawater temperatures, there have been observed changes in recent years in the breeding behaviour of some fish species in the Black Sea. Thus, for the turbot Scophthalmus m...
The purpose of this study is to highlight new aspects regarding the behavior of Engraulis encrasicolus (Linnaeus, 1758) anchovy on the Romanian Black Sea coast, anchovy being one of the most important economically species in the Black Sea riparian countries and with great importance in the trophic chain of the marine ecosystem. Thus, some behaviora...
The horse mackerel is a pelagic marine species of commercial interest at the Romanian Black Sea coast. The present study presents the analysis of the age of horse mackerels at the first sexual maturıty. For the determination of age, the method used was the interpretation of the otoliths, these are bone structures located in the inner ear. Age of se...
The invasive species Rapana venosa (Valenciennes, 1846) was reported for the first time at the Romanian Black Sea coast in 1963 (Gomoiu, 1972). Due to the excellent gourmet qualities, rapa whelk population began to be exploited since 2009. At first, during the period from 2009 to 2012 rapa harvesting was done only manually with divers. Since the se...
As a result of the increasingly concern of people regarding the food safety, different public media focused on the data collected from reference laboratories inducing a false perception regarding the threat of sea food consumption. Starting with the Minamata disaster more and more people became worried about the sea water pollution with heavy metal...
The Mediterranean horse mackerel Trachurus mediterraneus, (Steindachner, 1868) is one of the most exploited commercial species of the fisheries in the Black Sea basin. Their economic importance and the need of adequate measures for conservation and management of this resource, require more information about their population dynamics. This paper pre...
In last years it has been a major change in the quantity and diversity of fish caught in the Black Sea. The study of fish species diversity caught in Romanian seaside area was carried out in June 2016, the data being compared with the 2004-2006 period. In 2004-2006, 10 species were identified from 10 fish families, and in 2016 were identified 16
sp...
During recent decades, the Black Sea suffered changes that determined the deterioration of all components of the marine ecosystem, which had direct impact on decreasing the biological diversity and productivity, affecting the quality of life and ecological balance (Maximov et al., 2010). The fishery sector is one of the most affected by the changes...
The common fisheries policy of the European Council decided, after detailed analysis, that measures to manage fishing capacity in a balanced manner with fishing opportunities should be imposed and called on each Member State to initiate early action to adjust the fishing capacity of their fleets to their fishing opportunities [Article 22 of Regulat...
