Acronym SOLEMON
Category
Fisheries
Title Stock assessment of Solea vulgaris in central and northern Adriatic Sea and evaluation of the effort applied by the different fishing activities Programme National Programme
Instrument (FP6)
Contact Type (FP7)
Strand (Interreg)
NA
Theme (FP7)
Activity Area (FP6)
Regional Area (Interreg)
Action (COST)
NA
Specific Programme (FP7)
NA
Funding source National Coordinator Gianna Fabi Coordinator email gianna.fabi@an.ismar.cnr.it
Coordinator institution
CNR - National Research Council (Italy)
Institutions involved
FRIS - Fisheries Research Institute of Slovenia (Slovenia) ,
BIOKOTOR IBM - Institute for Marine biology (Montenegro) ,
IOF - Institute of Oceanography and Fisheries (Croatia) ,
ISPRA - Italian National Institute for Environmental Protection and Research (Italy) ,
Start year 2004 End year 2016 Funding (€) € 253,863 Website NA Summary The management of common sole Solea solea in the central and northern Adriatic Sea, where it is the target species of rapido trawlers and set netters and a kept by-catch for otter trawlers. Data on commercial fisheries were collected in 2005 and 2006 through the sampling of fleets and landings, collection of auction documents and direct observations at the landing sites. Four experimental surveys with rapido trawl were also carried out in spring and fall of the two years to collect data on the population at sea. Growth parameters (Linf = 39.6; K = 0.44; t0 = -0.46) were calculated from the length frequency distributions of soles caught during surveys. In the data analysis, landing data and length-frequency distributions were expanded to the entire fleets and then processed by the Length Cohort Analysis (LCA) and the Leslie-DeLury analysis to estimate the total stock biomass and the fishing mortality. The Yield per Recruit analysis (Y/R) was employed to verify the presence of growth overfishing. The fishing fleets operating in the study area included 1,152 vessels in 2005 and 1,067 in 2006. 12% of them used rapido trawl, 41% set nets, and 47% otter trawl. The fishing grounds of large rapido- and otter- trawlers were wider than those exploited by the smaller vessels, extending from the edge of the coastal area up to the external limit of the Croatian waters. Overlapping of fishing grounds was noteworthy, especially for the fleets belonging to neighbouring harbours. Set netters mostly operated inside the coastal area in the surroundings of the fishing harbours from spring to fall. Total sole landings amounted to 1,786 t and 1,901 t in 2005 and 2006, respectively. The Italian fleets' contribution was around 91%, while the remaining 9% was provided by the Croatian vessels mainly using set nets. Rapido trawls made up 80% of the Italian landings, set nets 14%, and otter trawls 6%. Undersized specimens (TL).
The present research program was aimed to obtain a picture of the sole stock exploitation in the central and northern Adriatic Sea, taking into account the different fishing activities, the eco-ethology, the spatial distribution and the consistency of the stock of S. solea.
Keywords
Flatfish;
Sole;
Stock assessment;
Fisheries management;
Fish;
Marine Region
74
Northern Adriatic (GSA 17)
45
Southern Adriatic Sea (GSA 18)
2
Marine Region Map
