Beam trawls often catch more demersal taxa and otter trawls
catch more pelagic taxa (Vasslides and Able, 2008; Malek et al., 2014).
Spatiotemporal factors affecting fish harvest and their use in estimating the monthly yield of single otter trawls
in Putuo district of Zhoushan, China.
Communities inhabiting shelf sand and mud habitats were shown to exhibit important negative short-term impacts when trawled by scallop dredges, beam trawls and otter trawls
(Kaiser et al, 2006).
Scallop fisheries in the United Kingdom are the third most economically important fishery and are prosecuted with either dredges (king scallops and queen scallops) or otter trawls
were used to sample sicklefin chubs and sturgeon chubs in main channel habitats (i.e., in and adjacent to the thalweg) of reaches downstream of the Tongue River in 2009 and 2010 that were also selected for fyke net sampling (Fig.
Using twin-rigged otter trawls
, the fishery runs year round and is utilized by just two companies under 20 licenses.
Common commercial methods for catching shrimp and prawns include otter trawls
, cast nets, seines, shrimp baiting and dip netting.
The certification assessment will cover all of the cod and haddock fisheries supplying the group and a diversity of harvesting methods including Demersal otter trawls
, Danish seine, long lines, hand lines and gill nets.
Two general types of otter trawls
were experimented with during the survey: the Atlantic type had two seams and was low-opening (FWS, 1942: Fig.
At least two fisheries using otter trawls
and fisheries that catch and discard cod should be among the first evaluations.
From 1992-97, juvenile fish were collected using otter trawls
and bag seines in the Rio Grande from its confluence with the Gulf of Mexico to 48.3 river-km upstream.
At least three 1-2 min otter trawls
(0.3-cm cod-end mesh aperture) were conducted at each site, and distance trawled was determined by GPS technology.