Yearly Fluctuation in the Fish Species Composition of Shrimp Beam Trawls off Maemuldo, Korea, during 2007-2009

Abstract

We investigated yearly fluctuation of the fish species composition of beam trawls off Maemuldo in the east southern sea of Korea, from March 2007 to November 2009. A total of 75 fish species were collected during the period. The number of fish species accumulated amounted to 54, 64 and 75 species in 2007, 2008 and 2009, respectively. The number of newly occurring species increased with time. The number of expected resident species in Maemuldo was estimated as 9 species including Conger myrister, Okamejei kenojei and Pholis nebulosa, each of which appeared more than 14 out of a total 27 times.

Effects on bycatch reduction in a shaking cod end generated by canvas in a shrimp beam trawl

“…In Korea, the species distribution caught with a shrimp beam trawl has been investigated off the southern (Oh et al, 2003;Oh, 2010;Song et al, 2012;Park et al, 2013b;Seo et al, 2013) and the western coasts (Park et al, 2013a). Until recently, BRD experiments with shrimp trawls were mainly focused on separating demersal fish from the main shrimp catch and highlighting the fish passing out from the net (Jang et al, 2006;Balzano, 2011, 2013).…”