Circle hooks: developing better fishing practices in the artisanal longline fisheries of the Eastern Pacific Ocean

Authors: 

Andraka, S., Mug, M., Hall, M., Pons, M., et al.

Year: 

2013

Journal/Publisher Name: 

Biological Conservation

Volume (Issue #): 

160

Page #s: 

214-224

Contact information: 

sandra.andraka@wwf.panda.org (S.Andraka), moisesmug61@ gmail.com (M.Mug), mhall@iattc.org (M.Hall), maite.pons@cicmar.org,(M.Pons), lucasrovira@yahoo.es (L.Pacheco), mano_parmar@hotmail.es (M.Parrales), lilianarendonm@hotmail.com (L.Rendón), mariluz@submon.org (M.L.Parga), mituhasi@fish.kagoshima-u.ac.jp (T.Mituhasi), alvaro.segurah@gmail.com (Á.Segura), dortega @wwfmex.org (D.Ortega), erick.villagran@gmail.com (E.Villagrán), sacapera@gmail.com (S.Pérez), celina_dpaz@hotmail.com (C.dePaz), salvadorsiu@gmail.com (S.Siu),velkiss.gadea@gmail.com (V.Gadea), julian_1@hotmail.com (J.Caicedo), lazapata@wwf.org.co (L.A.Zapata), jmartinez@mardex.com.ec (J.Martínez), pablo.guerrero@wwfgalapagos.org.ec (P.Guerrero), michael.valqui@gmail.com (M.Valqui), nvogel@iattc.org (N.Vogel)
Summary: 

An analysis of the performance of circle hooks in comparison to J-style and tuna hooks on the hooking rates of target and non-target species, specifically sea turtles, in the artisanal surface longline fisheries of Ecuador, Panama, and Costa Rica was performed. The target fisheries were mahi-mahi and a combination of tunas, billfishes, and sharks (TBS). In the TBS fishery, tuna hooks were compared to 16/0 circle hooks from Ecuador and Panama and 18/0 circle hooks from Costa Rica. For the mahi-mahi fishery, 14/0 and 15/0 circle hooks in Ecuador and 16/0 circle hooks in Costa Rica were compared to traditional J-style hooks. Circle hooks reduced sea turtle hooking rates in most of the comparisons. Hooking rates for target and non-target species were not consistent.