Boren Laura J, Morrissey Mike, Muller Chris G, Gemmell Neil J
University of Canterbury, School of Biological Sciences, Christchurch, New Zealand.
Mar Pollut Bull. 2006 Apr;52(4):442-6. doi: 10.1016/j.marpolbul.2005.12.003. Epub 2006 Feb 20.
New Zealand fur seals in the Kaikoura region breed near a town with expanding tourist and fishing industries and commonly come ashore entangled in nets and plastic debris. However, the rate at which entanglement occurs was previously unknown. A decade of Department of Conservation seal callout data was analysed to determine the level of entanglement in the region and the most common debris type. Monitoring of adult female fur seals released from entanglement provided information on the potential for serious wounds to heal and survivorship of released individuals. Entanglement rates of pinnipeds in Kaikoura are some of the highest reported world-wide (average range: 0.6-2.8%) with green trawl net (42%), and plastic strapping tape (31%) together contributing the most to debris types. Nearly half of the reported entangled seals are successfully released (43%) and post-release monitoring shows that with appropriate intervention the chance of an individual surviving even with a significant entanglement wound is high. Our study demonstrates that while entanglement in the region is high, a successful intervention protocol may help reduce the potential for entanglement-related mortality in the region.
凯库拉地区的新西兰海狗在一个旅游业和渔业不断发展的城镇附近繁殖，它们经常上岸时被渔网和塑料碎片缠住。然而，此前人们并不清楚缠住海狗的发生率。对保护部十年的海豹救助数据进行了分析，以确定该地区的缠住情况水平以及最常见的碎片类型。对从缠住中解救出来的成年雌性海狗进行监测，提供了有关严重伤口愈合可能性和被解救个体存活率的信息。凯库拉海狮的缠住率是全球报告的最高缠住率之一（平均范围：0.6 - 2.8%），其中绿色拖网（42%）和塑料捆扎带（31%）是造成缠住的碎片类型中占比最大的两种。报告的被缠住海豹中近一半（43%）被成功解救，放归后的监测表明，即使有严重的缠住伤口，在适当干预下个体存活的几率也很高。我们的研究表明，虽然该地区的缠住情况很严重，但一个成功的干预方案可能有助于降低该地区与缠住相关的死亡率。
