Biodeposition, respiration, and excretion rates of an introduced clam Mercenaria mercenaria in ponds with implications for potential competition with the native clam Meretrix meretrix in Shuangtaizi estuary, China  

作　　者：张安国 袁秀堂 侯文久 李晓东 赵凯 陈卫新 苏秀榕 

机构地区：[1]School of Marine Sciences, Ningbo University, Ningbo 315211, China [2]National Marine Environmental Monitoring Center, State Oceanic Administration (SOA), Dalian 116023, China [3]College of Animal Husbandry and Veterinary, Liaoning Medical University, Jinzhou 121001, China [4]Panjin Guanghe Aquaculture Company, Panjin 124200, China [5]Panshan Marine Fisheries Bureau, Panjin 124200, China

出　　处：《Chinese Journal of Oceanology and Limnology》2016年第3期467-476,共10页中国海洋湖沼学报（英文版）

基　　金：Supported by the National Special Research Fund for Non-Profit Marine Sector(No.201305043);the Key Laboratory for Ecological Environment in Coastal Areas,State Oceanic Administration(No.201311);the Collaborative Innovation Center for Zhejiang Marine High-Efficiency and Healthy Aquaculture;the K.C.Wong Magna Fund at Ningbo University

摘　　要：This study aimed to evaluate the potential impacts of an introduced clam Mercenaria mercenaria on estuarine ecosystem, and implications for the niche competition with a native clam Meretrix meretrix. The biodeposition, respiration, and excretion rates of 34. mercenaria were determined seasonally using a sediment trap and a closed respirator in field. The biodeposition rates ofM. mercenaria were 0.06-0.37 g/ （ind.·d）, and the respiration rates were 0.31-14.66 mg/（ind.·d）. The ammonia and phosphate excretion rates were 0.18-36.70 and 1.44-14.87 μg/（ind.·d）, respectively. The hard clam M. mercenaria may discharge dry deposits up to 2.1 × 10^5 t, contribute 18.3 t ammonia and 9.0 t phosphate to culture ponds, and consume 7.9×10^3 t O2 from ponds annually. It suggested that the hard clam M. mercenaria might play an important role in pelagic-benthic coupling in pond ecosystem through biodeposition and excretion. A comparison of the key physiological parameters of the introduced clam M. mercenaria and the native clam Meretrix meretrix suggested that M. mercenaria had a niche similar to that of Meretrix meretrix in Shuangtaizi estuary and might have a potential competition with Meretrix meretrix for habitat and food ifM. mercenaria species escaped from the culture pond or artificially released in estuarine ecosystem.这研究试图与本国的蚌 Meretrix meretrix 为壁龛比赛在河口生态系统，和含意上评估介绍的蚌 Mercenaria mercenaria 的潜在的影响。M 的 biodeposition，呼吸，和排泄率。mercenaria 在领域里用一个沉积陷井和一个关上的口罩季节地被决定。M 的 biodeposition 率。mercenaria 是 0.06-0.37 g/(ind ?????? 崙吗？？

关 键 词：Mercenaria mercenaria Meretrix meretrix species introduction native clam physiological parameters potential competition Shuangtaizi estuary 

分 类 号：S917.4[农业科学—水产科学]