Cornwall College Newquay, Trenance Gardens, Newquay, Cornwall TR7 2LZ, UK.
Mar Pollut Bull. 2012 Dec;64(12):2815-9. doi: 10.1016/j.marpolbul.2012.09.005. Epub 2012 Oct 29.
Entanglement in marine debris has been internationally recognised as a potential threat to marine species. Sightings records and a photo identification catalogue from a haul out site in southwest England were used to establish entanglement records for grey seals Halichoerus grypus. Between 2004 and 2008 the annual mean entanglement rates varied from 3.6% to 5%. The maximum recapture period for entangled seals compared to paired control seals was significantly less (p=0.045) suggesting an increased mortality rate for affected seals. Of the 58 entangled cases in the catalogue, 64% had injuries that were deemed serious. Of the 15 cases where the entangling debris was visible, 14 were entangled in fisheries materials. The entanglement reported at this site could indicate a high rate of mortality and should be monitored carefully. On a more immediate level, entanglement represents a welfare issue for the affected animals.
海洋垃圾缠绕已被国际公认为对海洋物种的潜在威胁。通过对英格兰西南部一个搁浅点的目击记录和照片识别目录的研究，确定了灰海豹（Halichoerus grypus）的缠绕记录。2004 年至 2008 年，每年的平均缠绕率从 3.6%到 5%不等。与配对对照海豹相比，被缠绕海豹的最大重捕期明显更短（p=0.045），这表明受影响海豹的死亡率增加。在目录中的 58 个缠绕案例中，64%的案例的受伤被认为是严重的。在可见缠绕物的 15 个案例中，有 14 个缠绕在渔业材料中。该地点报告的缠绕事件可能表明死亡率很高，应仔细监测。在更直接的层面上，缠绕对受影响的动物来说是一个福利问题。
