Tajima Yuko, Maeda Kaori, Yamada Tadasu K
Division of Vertebrate, Department of Zoology, National Museum of Nature and Science, 4-1-1 Amakubo, Tsukuba, Ibaraki 305-0005, Japan.
J Vet Med Sci. 2015 Jan;77(1):45-51. doi: 10.1292/jvms.13-0454. Epub 2014 Oct 20.
One hundred and twenty stranding events of Stejneger's beaked whales were reported in Japan between 1999 and 2011. The purpose of this study is to introduce pathological data and to discuss probable causes of death for 44 Stejneger's beaked whales among them. The significant pathological findings were the pulmonary edema, parasitic granulomatous nephritis, emaciation, amyloidosis, suppurative bronchopneumonia and so on. The probable causes of death were categorized as noninfectious in 43 of the cases, which included drowning, starvation and secondary amyloidosis. One individual was diagnosed with septicemia, which was the only example of an infectious disease. Because we could not always perform advanced analyses, such as microbiology tests, biotoxin examinations or contaminant analyses, the finality of our findings may be impaired. However, the present study has broad implications on the causes of death of Stejneger's beaked whales of the seas around Japan, which are valuable for the future studies and for the detection of emerging diseases.
1999年至2011年期间，日本共报告了120起斯特氏喙鲸搁浅事件。本研究的目的是介绍病理数据，并探讨其中44头斯特氏喙鲸可能的死亡原因。显著的病理发现包括肺水肿、寄生性肉芽肿性肾炎、消瘦、淀粉样变性、化脓性支气管肺炎等。43例病例的可能死亡原因归类为非传染性，包括溺水、饥饿和继发性淀粉样变性。有1头个体被诊断为败血症，这是唯一一例传染病。由于我们并非总能进行微生物检测、生物毒素检查或污染物分析等高级分析，我们研究结果的确定性可能会受到影响。然而，本研究对日本周边海域斯特氏喙鲸的死亡原因具有广泛的启示意义，这对未来的研究以及新兴疾病的检测具有重要价值。
