Preliminary Data on The Ichthyofauna Structure
from The Northern Part of The Romanian Black Sea Coast
George ŢIGANOV, Cristian-Sorin DANILOV, Cătălin Valentin PĂUN,
Mădălina
GALAŢCHI*
National Institute for Marine Research and Development Grigore
Antipa , Romania
* Corresponding author e-mail: mglatchi@alpha.rmri.ro
Abstract
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 4 fishing stations with gillnets of different mesh sizes were carried out.
In pelagic trawling, 20 fish species have been identified, the dominant species
being sprat (Sprattus sprattus) and whiting (Merlangius merlangus euxinus). In
gillnet experimental fishing, 16 species were identified, Caspian shad (Alosa
tanaica) and Danube shad (Alosa immaculata) being dominant. Also, in order to
estimate the ichthyofauna biological diversity, the Margalef Index was
calculated, values between 3.07-6.15 being recorded, indicating a high species
diversity in the studied area.
Keywords: ichthyofauna, pelagic trawl, gillnets, diversity
DOI https://doi.org/10.56082/annalsarscibio.2021.1.5