1. In Brazil, five species of sea turtles use the region for feeding and reproduction. For these endangered species, one of the biggest impacts on their populations is incidental catches in fishing gear.
2. In the state of Santa Catarina (SC) ‐ Brazil, fishing is an important economic activity, with distinct and numerous industrial and artisanal fleets. These fleets incidentally capture all five species of sea turtle.
3. In the Canoa beach fishing community in the municipality of Barra Velha (SC), gillnet fishing holds great economic and cultural importance. The four main gillnet fisheries in this community are whitemouth croaker, leatherjacket/mackerel, hake, and grouper/catfish/flounder, the latter of which is carried out on rocky bottoms and is locally called ‘malhão’. In this fishery, fishermen have reported catching sea turtles over the years, especially the green turtle Chelonia mydas.
4. In the present study, 1,998 sets were monitored between September 2010 and April 2011, of which 104 (5.2%) were of gillnets for whitemouth croaker Micropogonias furnieri; 324 (16.2%) were for leatherjackets Oligoplites spp. and mackerel Scomberomorus spp.; 1,261 (63.1%) were for hake Cynoscion spp.; and 309 (15.5%) were for grouper Epinephelus spp., catfish Genidens spp., and flounder Paralichthys spp.
5. Considering all fisheries, the incidental capture of sea turtles occurred in only 3% of the monitored sets. In all, 87 sea turtles were captured, 78 (89.6%) of which were recorded in the ‘malhão’. Of these captures, 68 (87.2%) were C. mydas, eight (10.2%) were loggerhead turtle Caretta caretta and two (2.6%) were ‘hard‐shelled’ turtles.
6. The direct mortality rate observed for C. mydas in the ‘malhão’ was 73.5%, which is the highest rate recorded in similar fisheries of the south‐west Atlantic, thus raising concern for the protection of this species in the Atlantic Ocean.

中文翻译：

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西南大西洋小规模刺网底渔场中象牙鱼的高死亡率

1. 在巴西，有五种海龟在该地区觅食和繁殖。对于这些濒临灭绝的物种，对它们种群的最大影响之一是渔具的偶然捕获。
2. 在巴西圣卡塔琳娜州（SC）-捕捞是一项重要的经济活动，拥有众多而独特的工业和手工船队。这些舰队偶然捕获了所有五种海龟。
3. 在巴拉维拉（SC）市的卡诺阿海滩捕鱼社区中，刺网捕鱼在经济和文化上具有重要意义。该社区的四个主要刺网渔业是白嘴鲈，leather鱼/鲭鱼，无须鳕和石斑鱼/ cat鱼/比目鱼，后者在多岩石的海底进行，在当地被称为“malhão”。多年来，据报道，在这种渔业中，渔民捕捞了海龟，尤其是绿海龟Chelonia mydas。
4. 在本研究中，从2010年9月到2011年4月，共监测了1,998套，其中104个（5.2％）是用于白嘴鱼的刺网mouth。324（16.2％）供皮夹克Oligoplites spp使用。和鲭鱼Scomberomorus spp。1,261（63.1％）人为无须食宿藻。石斑鱼Epinephelus spp。，cat鱼Genidens spp。和比目鱼Paralichthys spp分别为309和309（15.5％）。
5. 考虑到所有渔业，偶然捕获的海龟仅发生在3％的监测范围内。总共捕获了87只海龟，其中有78只（89.6％）记录在“malhão”中。这些捕获的，68（87.2％）为C.海龟，八（10.2％）是海龟科圆科圆和两个（2.6％）为“硬壳”海龟。
6. 在“malhão”中观察到的C. mydas的直接死亡率为73.5％，这是西南大西洋类似渔业中记录的最高死亡率，因此引起了人们对在大西洋中对该物种的保护的关注。