Abstract: The carbon budget of rock worm Marphysa sanguinea with body weight of(1.2±0.1)g(group S)， (4.0±0.3)g(group M)，and(8.5±1.1)g(group L)fed sea lettuce Ulva pertusa was determined at various water temperatures(16，20，and 24℃)to study effects of temperature and body weight on carbon budget of M.sanguinea.The results showed that carbon consumption was significantly affected by temperature and body weight，with the maximum at 20℃.At the same temperature，the food ingestion was shown to be decreased significantly with increasing body weight， expressed as the equation COC＝aWb， where b value ranging from －0.47 to －0.89.The assimilation rate was varied from 50.2%to 76.9%，with the maximum at 20℃，indicating that the M.sanguinea has a higher absorption rate of Ulva pertusa.The minimal carbon requirement(MCR)was decreased with increasing body weight， significant difference between groups S， M and L at different temperature.Within 16－24 ℃， the maximal proportion of carbon consumption was found in respiratory carbon，ranging from 47.3%to 64.9%，and the maximal proportion of growth cumulative carbon at 20℃，varying from 19.1%to 44.1%.The findings indicate that M.sanguinea has a higher carbon ingestion rate and carbon accumulation rate at 20℃，which can provide a theoretical basis for the scale cultivation of M.sanguinea.
张文龙, 刘声宇, 刘晓威, 李旭, 周一兵, 杨大佐. 温度和体质量对岩虫碳收支的影响[J]. 大连海洋大学学报, 2018, 33(2): 228-232.
ZHANG Wen－long, LIU Sheng－yu, LIU Xiao－wei, LI Xu, ZHOU Yi－bing, YANG Da－zuo, . Effects of temperature and body weight on carbon budget of rock worm Marphysa sanguinea. Journal of Dalian Ocean University, 2018, 33(2): 228-232.
2018, Vol. 33 
