Comparison of Faunal Scavenging of Submerged Carrion in Two Seasons at a Depth of 170 m, in the Strait of Georgia, British Columbia
Comparison of Faunal Scavenging of Submerged Carrion in Two Seasons at a Depth of 170 m, in the Strait of Georgia, British Columbia
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DOI：
10.3390/insects8010033
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发表时间：
2017-03-01
期刊：
影响因子：
3
通讯作者：
Bell, Lynne S.
中科院分区：
文献类型：
--
作者：
Anderson, Gail S.;Bell, Lynne S.
淹没在海洋中的尸体的埋藏学知之甚少，但它在生态学和法医学上极其重要。本研究的目的是确定猪尸体作为人类代理人在格鲁吉亚海峡在170米的春季和秋季的命运。利用加拿大海洋网络的维多利亚实验网络海底观测站，每个季节将两具尸体放置在一个装有网络摄像头和测量水化学的仪器的电缆平台下。每15分钟记录两分钟的视频。在春天，Lyssianassidae片脚类动物和Pandalus platyceros立即被吸引并以尸体为食，片脚类动物从内部去除大部分软组织，而虾则撕碎皮肤和组织。在第8天和第10天对尸体进行去离子处理。在秋天，掌蟹是主要的食腐动物，从一具尸体上切除大部分软组织。端足类动物直到第15天才大量到达，在第22天它们将被清除的尸体分解，在第24天将较少被清除的尸体分解。端足类动物在灭绝后仍然存在了几天。这与以前在不同深度和栖息地进行的实验有很大不同。这些数据对于预测保护、规划恢复和管理家庭期望非常有价值。
The taphonomy of carcasses submerged in the ocean is little understood, yet it is extremely important ecologically and forensically. The objectives of this study were to determine the fate of pig carcasses as human proxies in the Strait of Georgia at 170 m in spring and fall. Using Ocean Networks Canada's Victoria Experimental Network Underseas (VENUS) observatory, two carcasses per season were placed under a cabled platform hosting a webcam and instruments measuring water chemistry. Two minutes of video were recorded every 15 min. In spring, Lyssianassidae amphipods and Pandalus platyceros were immediately attracted and fed on the carcasses, the amphipods removed the bulk of the soft tissue from the inside whilst the shrimp shredded the skin and tissue. The carcasses were skeletonized on Days 8 and 10. In fall, Metacarcinus magister was the major scavenger, removing most of the soft tissue from one carcass. Amphipods did not arrive in large numbers until Day 15, when they skeletonized the scavenged carcass by Day 22 and the less scavenged carcass by Day 24. Amphipods remained for some days after skeletonization. This skeletonization was very different from previous experiments at different depths and habitats. Such data are very valuable for predicting preservation, planning recoveries, and managing family expectations.