• Assessment of the Relative Catch Performance of a Surrounding Net without the Purse Line as an Alternative to a Traditional Boat Seine in Small-Scale Fisheries 

      Notti, Emilio; Brcic, Jure; De Carlo, Francesco; Herrmann, Bent; Lucchetti, Alexandro; Virgili, Massimo; Antonello, Sala (Journal article; Tidsskriftartikkel; Peer reviewed, 2016-03-30)
      The catch performance of a traditional Ligurian boat seine, which is not in line with the European Union regulation, was compared with an experimental surrounding net without the purse line as a potential legal alternative. The relative catch performance between the two gear types was assessed using a new catch comparison method requiring neither paired data collection nor equal number of hauls with ...
    • Can vertical separation of species in trawls be utilized to reduce bycatch in shrimp fisheries? 

      Larsen, Roger B.; Herrmann, Bent; Brcic, Jure; Sistiaga, Manu; Cerbule, Kristine; Nielsen, Kåre Nolde; Jacques, Nadine; Lomeli, Mark Joseph Max; Tokac, Adnan; Cuende, Elsa (Journal article; Tidsskriftartikkel; Peer reviewed, 2021-03-26)
      Several shrimp trawl fisheries use a Nordmöre sorting grid to avoid bycatch of fish. However, small fish can pass through the grid. Therefore, the retention of juvenile fish often remains an issue during shrimp trawling. We investigated the vertical distribution of deepwater shrimp (<i>Pandalus borealis</i>) and dominant bycatch species at the point where the Nordmöre grid section is installed. This ...
    • Effect of a lateral square-mesh panel on the catch pattern and catch efficiency in a Mediterranean bottom trawl fishery 

      Bonanomi, Sara; Brcic, Jure; Herrmann, Bent; Notti, Emilio; Colombelli, Alessandro; Moro, Fabrizio; Pulcinella, Jacopo; Sala, Antonello (Journal article; Tidsskriftartikkel; Peer reviewed, 2020-03-31)
      The current legal codends used in Mediterranean bottom trawl fisheries are at high risk of retaining undersized individuals of several commercial fish species. This entails that codends alone are unable to provide the desired exploitation pattern. A simple technological measure that potentially can provide higher release efficiency of undersized fish are Square-Mesh Panels (SMPs). SMPs are often ...
    • Effect of Codend Circumference on the Size Selection of Square-Mesh Codends in Trawl Fisheries 

      Sala, Antonello; Herrmann, Bent; De Carlo, Francesco; Lucchetti, Alexandro; Brcic, Jure (Peer reviewed; Journal article; Tidsskriftsartikkel, 2016-07-29)
      It is well established that increasing mesh number in the circumference of a diamond-mesh trawl codend can reduce size selection for round fish, whereas selection for flat fish species is unaffected. This effect has also been documented in Mediterranean trawl fisheries. In contrast, no information is available with regard to the effect of increasing mesh number in the circumference of square-mesh ...
    • Mesh sticking probability in fishing gear selectivity: Methodology and case study on Norway lobster (Nephrops norvegicus) and mantis shrimp (Squilla mantis) in the Mediterranean Sea creel fishery 

      Brcic, Jure; Herrmann, Bent; Masanovic, Marina; Krstulovic Sifner, Svjetlana; Baranovic, Mateja; Škeljo, Frane (Journal article; Tidsskriftartikkel; Peer reviewed, 2019-08-27)
      Fish or crustaceans stuck in the fishing gear meshes can lead to operational problems in some fisheries and thereby affect the economic gain. However, mesh sticking probability has never been formally quantified as a part of the estimation of fishing gear size selectivity. Therefore, this study developed a size selection model and estimation procedure that, besides the size dependent retention and ...
    • Modelling the effect of mesh size and opening angle on size selection and capture pattern in a snow crab (Chionoecetes opilio) pot fishery 

      Herrmann, Bent; Grimaldo, Eduardo; Brcic, Jure; Cerbule, Kristine (Journal article; Tidsskriftartikkel; Peer reviewed, 2020-12-18)
      Size selection in commercial snow crab (Chionoecetes opilio) pot fisheries is important for reducing on-board sorting and unintended mortality of undersized individuals. In this paper, we tested whether snow crab of various sizes geometrically could pass through diamond meshes of different sizes and opening angles, to estimate a model for predicting the effect of mesh size and mesh opening angle on ...