FACTORS AFFECTING THE INCIDENTAL MORTALITY OF SEABIRDS IN THE DISSOSTICHUS ELEGlNOlDES FISHERY IN THE SOUTHWEST ATLANTIC (SUBAREA 48.3,1995 SEASON)
FACTORS AFFECTING THE INCIDENTAL MORTALITY OF SEABIRDS IN THE DISSOSTICHUS ELEGlNOlDES FISHERY IN THE SOUTHWEST ATLANTIC (SUBAREA 48.3,1995 SEASON)
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影响西南大西洋 Dissostichus eleglnoldes 渔业中海鸟意外死亡的因素（分区 48.3，1995 年季节）
DOI：
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发表时间：
1996
期刊：
影响因子：
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通讯作者：
L. Benzaquen
中科院分区：
文献类型：
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作者：
E. Marschoff;L. Benzaquen
本文分析了1995年阿根廷和智利渔船在48.3分区捕捞巴塔哥尼亚洋枪鱼（Dissostichus eleginoides）时记录的所有海鸟意外死亡。这些数据来自每艘渔船向其国家渔业当局提交的细比例尺报告，并以国际科学观察员从每艘渔船收集的资料作为补充。因此，可以对该季节观察到的几乎所有海鸟意外死亡率进行评估。死亡鸟类1428只，其中白钟海燕（Procellaria aequinoctialis）占77.8%，南方巨海燕（Macronectes longteus）占10.8%，黑眉信天翁（Diomeden melanophris）占8.1%，游荡信天翁（D. exulans）2.0%;灰头信天翁（D. chrysostoma）0.7%。还记录了在拖运行动中捕获并活着释放的总共56只海鸟。在这组中，最丰富的是M。属（50%）、D.黑腹果蝇（14.3%）和赤道果蝇（8.9%）。对影响附带死亡率的变量进行的研究表明，在船只对每单位努力量的鸟类捕获量（BPUE）以及对逐次运输数据的分析中，离陆地的距离、月相以及使用拖缆线和鱼钩大小都是变异的重要来源。
This paper analyses all incidental mortality of seabirds recorded on Argentinian and Chilean vessels fishing for Patagonian toothfish (Dissostichus eleginoides) in Subarea 48.3 during the 1995 season. The data was obtained from the fine-scale reports submitted by each vessel to its national fishing authority and supplemented with the information collected by international scientific observers from each vessel. It was thus possible to evaluate almost all of the incidental mortality of seabirds observed during the season. The total mortality recorded was 1 428 birds of which white-chimed petrels (Procellaria aequinoctialis) comprised 77.8%, southern giant petrels (Macronectes giganteus) 10.8%, black-browed albatrosses (Diomeden melanophris) 8.1%, wandering albatrosses (D. exulans) 2.0% and grey-headed albatrosses (D. chrysostoma) 0.7%. A total of 56 seabirds captured during hauling operations and released alive was also recorded. Within this group, the most abundant were M. giganteus (50%), D. melanophris (14.3%) and P. aequinoctialis (8.9%). A study of the variables affecting incidental mortality shows that the distance from land, the lunar phase and the use of streamer lines and hook size were important sources of variation, both in vessels' analyses of catch of birds per unit effort (BPUE), as well as of the haul-by-haul data.