de Solla S R, Fernie K J, Ashpole S
Population Assessment Unit, Canadian Wildlife Service, Environment Canada, 867 Lakeshore Road, Box 5050, Burlington, ON, Canada L7R 4A6.
Environ Pollut. 2008 Jun;153(3):529-36. doi: 10.1016/j.envpol.2007.09.017. Epub 2007 Nov 26.
Hatching success and deformities in snapping turtle hatchlings (Chelydra serpentina) were evaluated using eggs collected from 14 sites in the Canadian lower Great Lakes, including Areas of Concern (AOC), between 2001 and 2004. Eggs were analyzed for PCBs, PBDEs, and pesticides. Between 2002 and 2004, hatchling deformity rates were highest in two AOCs (18.3-28.3%) compared to the reference sites (5.3-11.3%). Hatching success was poorest in three AOCs (71.3-73.1%) compared to the reference sites (86.0-92.7%). Hatching success and deformity rates were generally poorer in 2001 compared to 2002-2004, irrespective of the study location and could be due to egg handling stress in 2001. Hatching success and deformities were generally worst from the Wheatley Harbour, St. Lawrence River (Cornwall), Detroit River, and Hamilton Harbour AOCs. Associations between contaminant burdens with embryonic development were sufficiently poor that the biological relevance is questionable. Stressors not measured may have contributed to development abnormalities.
2001年至2004年期间，利用从加拿大五大湖下游14个地点（包括受关注区域）收集的蛋，对鳄龟幼体（蛇鳄龟）的孵化成功率和畸形情况进行了评估。对蛋进行了多氯联苯、多溴二苯醚和农药分析。2002年至2004年期间，与对照地点（5.3%-11.3%）相比，两个受关注区域的幼体畸形率最高（18.3%-28.3%）。与对照地点（86.0%-92.7%）相比，三个受关注区域的孵化成功率最低（71.3%-73.1%）。与2002年至2004年相比，2001年的孵化成功率和畸形率总体较差，无论研究地点如何，这可能是由于2001年的蛋处理压力所致。惠特利港、圣劳伦斯河（康沃尔）、底特律河和汉密尔顿港受关注区域的孵化成功率和畸形情况总体最差。污染物负荷与胚胎发育之间的关联非常弱，其生物学相关性值得怀疑。未测量的应激源可能导致了发育异常。
