温度对不同规格长牡蛎三倍体和二倍体代谢影响的比较  

Effects of water temperature on metabolism of triploid and diploid oyster Crassostrea gigas

作　　者：周一兵[1] 黄璞祎[2] 李晓艳[3] 杨大佐[1] 张国范[4] 

机构地区：[1]大连水产学院生命科学与技术学院,辽宁大连116023 [2]东北林业大学野生动物资源学院,黑龙江哈尔滨150040 [3]大连大学生物工程学院,辽宁大连116622 [4]中国科学院海洋研究所,山东青岛266071

出　　处：《大连水产学院学报》2006年第3期226-230,共5页Journal of Dalian Fisheries University

基　　金：国家科委海洋863计划资助(863-819-01-04)

摘　　要：用试验生态学方法研究了温度对不同规格的长牡蛎Crassostrea gigas三倍体（3n）和二倍体（2n）呼吸和排泄的影响。试验设12、18、24、30℃4个温度水平，并根据牡蛎倍性、规格分别设3n—L、3n—M、3n—S、2n—L、2n—M、2n—S6个组别。结果表明：在12～24℃条件下，牡蛎的耗氧率随着温度的升高而增加，并在24℃时达最大值，之后，耗氧率随温度的升高而降低；3n和2n牡蛎软体部干重（形）与耗氧率（R）的回归关系符合幂函数方程R=αW^b-1，3n的α值为1．532～1．737，6值为0．728～0．887，2n的α值为1．197～2．173，b值为0．823～0．854。牡蛎软体部干重（形）与排氨率（N）的关系符合幂函数N=cW^d-1，2n的C平均值为194．992，d平均值为0．669；3n的C平均值为251．746，d平均值为0．611。以体重为协变量进行协方差分析结果表明：温度引起耗氧率和排氨率的差异达到显著水平；倍性效应引起排氨率的差异达到显著水平，且3n的排氨率大于2n，倍性效应引起的耗氧率的差异不显著。Effects of water temperature （ 12, 18, 24 and 30℃ ） on oxygen consumption and ammonia - N excretion of triploid （3n） and diploid oyster （2n） （Crassostrea gigas） were studied in laboratory. At 12 - 24℃, oxygen consumption rate increased with accelerated temperature, peaks at 24℃ for 3n and 2n oyster. At 30℃, however, oxygen consumption decreased. Ammonia - N excretion rate of the oyster increased with increase in water temperature. Under controlled temperature of 12 - 30℃, the regressive equation between body weight of the oyster（W） and oxygen consumption rate （R） is described as R = aW^b-1, the ranges of a and b were 1. 532 -1. 737, 0.728 -0.887 for triploid ; 1. 197 -2. 173, 0.823 -0. 854, for diploid. Under 12 -30℃, the relationship between body weight （W） of oyster and ammonia - N excretion rate （N） is described as regressive equation N = cW^d-1 , the means of c and d were 194. 992 and 0. 669 in diploid, and 251. 746, 0. 610 in triploid. ANOVA showed that oxygen consumption rate was significantly affected by temperature, and the triploid had higher value than diploid; the ammonia - N excretion rate was significantly affected by the water temperature and ploidity.

关 键 词：温度 长牡蛎 三倍体 二倍体 呼吸 排泄 

分 类 号：S968.3[农业科学—水产养殖]