PDF(Pubmed)
Abstract：
The Shandong Peninsula is located on the western coast of the Pacific and is adjacent to the Bohai Sea (BS) and the Yellow Sea (YS) to the east. The East Asian finless porpoise Neophocaena asiaeorientalis sunameri, a subspecies of the narrow-ridged finless porpoise N. asiaeorientalis, is the dominant cetacean resident along the Shandong Peninsula. However, there is insufficient monitoring data to determine the status of the cetacean species in this region. Based on the publicly available literature, media, and internet social website, this study investigated the spatial-temporal distribution of porpoise stranding and bycatch along the coast of the Shandong Peninsula. Data on over five hundred porpoises from two hundred reports between 2000 and 2018 were compiled and analyzed. Results showed that the bycatch and stranding of porpoises occurred widely across the peninsula throughout all months and increased rapidly between 2010 and 2017. The incidents were more frequent in the area where the BS and YS converged during the spring and early summer than in other seasons. The mean body length of bycaught porpoises was smaller than that of those found stranded. Fishing activities could be the principal cause of local finless porpoise incidents. However, limited data hindered a quantitative evaluation of the living conditions of finless porpoises in this area. Establishing a comprehensive monitoring system, which includes standardized reporting, rescue operations, and scientific research, is essential to finless porpoise protection along the Shandong Peninsula.
摘要：
山东半岛位于太平洋西海岸，东临渤海（BS）和黄海（YS）。东亚江豚新海藻asiaeorientalissinameri，窄脊江豚的一个亚种，是山东半岛沿岸的主要鲸类居民。然而,没有足够的监测数据来确定该地区鲸目动物的状况。根据公开文献，媒体,和互联网社交网站，这项研究调查了山东半岛沿海海豚搁浅和副渔获的时空分布。从2000年至2018年的200份报告中收集并分析了500多只海豚的数据。结果显示，海豚的副渔获和搁浅在整个半岛广泛发生，并在2010年至2017年期间迅速增加。在春季和初夏期间，BS和YS融合的地区的事件比其他季节更为频繁。被捕获的海豚的平均体长小于被发现搁浅的海豚的平均体长。捕鱼活动可能是当地江豚事件的主要原因。然而,有限的数据阻碍了对该地区江豚生活条件的定量评估。建立全面的监测体系,其中包括标准化报告，救援行动,和科学研究，对山东半岛的江豚保护至关重要。
