Naslov
Can a square-mesh panel inserted in front of the cod end improve size and species selectivity in Mediterranean trawl fisheries?

Autori
Brčić, Jure ; Herrmann, Bent ; Sala, Antonello

Izvornik
Canadian Journal of Fisheries and Aquatic Sciences (0706-652X) 75 (2017), 5; 704-713

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, ostalo

Ključne riječi
bottom trawl ; selectivity ; square mesh panel
(bottom trawl, selectivity, square mesh panel)

Sažetak
An experiment was conducted to assess the selectivity in a typical Mediterranean bottom trawl, equipped with a square-mesh panel inserted in front of the cod end, for Atlantic horse mackerel (Trachurus trachurus), European hake (Merluccius merluccius), red mullet (Mullus barbatus), poor cod (Trisopterus minutus), broadtail shortfin squid (Illex coindetii), and deep-water rose shrimp (Parapaeneus longirostris). The release efficiency of undersized individuals through the panel was low. The differences in selectivity between the gear with and without the panel were very small. The low release efficiency of the square-mesh panel was caused by the lack of fish contact with the panel as they drifted towards the cod end, since the average contact probability was estimated not to exceed 9% for any of the species investigated. A low probability of contact with the selection device was thus found to be the reason for the low efficiency of the square-mesh panel.

Izvorni jezik
Engleski

Znanstvena područja
Biotehnologija

POVEZANOST RADA