FN Archimer Export Format
PT J
TI Toward elimination of unwanted catches using a 100 mm T90 extension and codend in demersal mixed fisheries
BT 
AF Robert, Marianne
   Morandeau, Fabien
   Scavinner, Marion
   Fiche, Marion
   Patterson, Heather M.
AS 1:1;2:1;3:2;4:3;5:;
FF 1:PDG-RBE-STH-LTBH;2:PDG-RBE-STH-LTBH;3:PDG-RBE-STH-LBH;4:;5:;
C1 Ifremer, Unité de Sciences et Technologies Halieutiques, Laboratoire de Technologie et Biologie Halieutique, Lorient, France
   Ifremer, Unité de Sciences et Technologies halieutiques, Plouzane, France
   Les Pêcheurs de Bretagne, Quimper, France
C2 IFREMER, FRANCE
   IFREMER, FRANCE
   PECHEURS DE BRETAGNE, FRANCE
SI LORIENT
   BREST
SE PDG-RBE-STH-LTBH
   PDG-RBE-STH-LBH
IN WOS Ifremer UPR
   DOAJ
   copubli-france
IF 3.24
TC 13
UR https://archimer.ifremer.fr/doc/00641/75312/75804.pdf
   https://archimer.ifremer.fr/doc/00641/75312/75805.docx
   https://archimer.ifremer.fr/doc/00641/75312/75806.docx
   https://archimer.ifremer.fr/doc/00641/75312/75807.docx
   https://archimer.ifremer.fr/doc/00641/75312/75808.csv
LA English
DT Article
AB Most European fishing fleets will need to drastically reduce their unwanted catches to comply with new rules of the common fisheries policy. A more practical way to avoid increasing on-board sorting time and issues linked to storage capacity is to prevent unwanted catches in the first place. We assessed the selectivity properties of an experimental fishing gear that combined a 100 mm T90 cylinder with 130 meshes in the extension and a 100 mm T90 codend of 33 meshes (experimental gear) compared to a 100 mm diamond mesh extension and codend (control gear) during commercial trips using twin trawls. Analysis of the relative size composition of catches indicated a significantly higher escapement of small fish of several target species (e.g. Lepidorhombus whiffiagonis, Melanogrammus aeglefinus, Raja spp, and Lophius spp) and non-target species (e.g. Capros aper and Gurnards spp) from the T90 experimental trawl compared to the control trawl (n = 49 hauls), resulting in a significant reduction of unwanted catches of Gadidae, Triglidae, and Caproidae. In contrast, nonnegligible commercial losses of small grade target gadoid species were observed. Mixed general linear models showed that the proportion of ray, haddock and anglerfish retained per length class decreased with increased tow duration. The T90 experimental gear will perform at a commercial level when targeting monkfish, megrim, rays and large haddock, however fishers are not likely to use this gear when targeting smaller-bodied species such as cephalopods, small haddock, whiting (Merlangius merlangus) and hake (Merluccius merluccius), because the gear is likely to allow large numbers to escape. Selectivity studies often focus on a short list of target species; however, catches of non-target species under quota can be problematic for some fisheries. For example, under the implementation of the Landing Obligation catches of boarfish could choke the French whitefish demersal fisheries in the Celtic sea, as France has no national quota for that species. The device tested constitutes an efficient solution to mitigate catches for such non-target schooling fish. 
PY 2020
PD JUN
SO Plos One
SN 1932-6203
PU Public Library of Science (PLoS)
VL 15
IS 7
UT 000552601500017
DI 10.1371/journal.pone.0235368
ID 75312
ER

EF