文献类型：期刊文献

中文题名：Growth performance and physiological parameters of the second generation selected and control groups of Pinctada martensii

英文题名：Growth performance and physiological parameters of the second generation selected and control groups of Pinctada martensii

作者：Deng Yuewen[1];Yu Ziniu[2];Du Xiaodong[1];Wang Qingheng[1];Fu Shao[1]

机构：[1]Guangdong Ocean Univ, Coll Fisheries, Zhanjiang 524025, Peoples R China;[2]Chinese Acad Sci, S China Sea Inst Oceanol, Guangzhou 510301, Guangdong, Peoples R China

年份：2011

卷号：30

期号：2

起止页码：120

中文期刊名：海洋学报：英文版

外文期刊名：ACTA OCEANOLOGICA SINICA

收录：SCI-EXPANDED(收录号：WOS:000292224700014)、CSTPCD、、Scopus(收录号：2-s2.0-80051698847)、CSCD2011_2012、WOS、CSCD

基金：Foundation item: The National Key Technology R&D Program in the 11th Five Year Plan of China under contract No. 2007BAD29B01-2; National Department Public Benefit Research Foundation under contract No. nyhyzx 07-048; Guangdong Marine and Fishery Bureau under contract Nos A200708C01, A200908A02 and A200908A05.

语种：英文

中文关键词：马氏珠母贝;生理参数;生长性能;对照组;第二代;育种规模;测量数据;测量实验

外文关键词：Pinctada martensii; the second generation selected group; growth; genetic gains; physiological parameters

中文摘要：In May of 2007,the second generation selected (SS) and control (SC) groups of pearl oyster Pinctada martensii were established by selecting 10% breeders with the largest and mean shell length,respectively,from the first generation selected group.Growth performance of the SS and SC groups were compared on the basis of measurement data at Days 8,18,60,95,195 and 365.On Day 365,100 individuals (60.0–75.0 mm at shell length) were sampled from each group and then subjected to the experiment where physiological parameters such as filtrate rate,oxygen consumption and ammonia excretion were measured at 15,20,25 and 30°C.The results show that the SS group had significantly larger mean shell length and shell height than the SC group at Days 8,18,60,95,195 and 365 (P <0.05).The genetic gains at different ages varied from 6.0% to 17.0% for shell length and 5.7% to 14.6% for shell height,respectively.At 15,20,25 and 30 ° C,the SS groups had significantly larger filtrate rate than the SC group (P <0.05).At 15 and 25 °C,the differences in oxygen consumption rate between the SS and SC groups were not significant (P >0.05).At 20 and 30 °C,however,the oxygen consumption rate of the SS group was significantly larger than the SC group (P <0.05).At 15,20,25 and 30 °C,there were no significant differences in ammonia excretion rate between the SS and SC groups (P >0.05).The present results indicate that there existed considerable genetic variability in the base population and a further selection could be likely fruitful.Mass selection for faster growth might produce animals that had higher intake of metabolizable energy by virtue of faster filtrating behavior.

外文摘要：In May of 2007, the second generation selected (SS) and control (SC) groups of pearl oyster Pinctada rnartensii were established by selecting 10% breeders with the largest and mean shell length, respectively, from the first generation selected group. Growth performance of the SS and SC groups were compared on the basis of measurement data at Days 8, 18, 60, 95, 1.95 and 365. On Day 365, 1.00 individuals (60.0-75.0 mm at shell length) were sampled from each group and then subjected to the experiment where physiological parameters such as filtrate rate, oxygen consumption and ammonia excretion were measured at 15, 20, 25 and 30 degrees C. The results show that the SS group had significantly larger mean shell length and shell height than the SC group at Days 8, 18, 60, 95, 195 and 365 (P <0.05). The genetic gains at different ages varied from 6.0% to 17.0% for shell length and 5.7% to 14.6% for shell height, respectively. At 15, 20, 25 and 30 degrees C, the SS groups had significantly larger filtrate rate than the SC group (P <0.05). At 15 and 25 degrees C, the differences in oxygen consumption rate between the SS and SC groups were not significant (P >0.05). At 20 arid 30 degrees C, however, the oxygen consumption rate of the SS group was significantly larger than the SC group (P <0.05). At 15, 20, 25 and 30 degrees C, there were no significant differences in ammonia excretion rate between the SS and SC groups (P >0.05). The present results indicate that there existed considerable genetic variability in the base population and a further selection could be likely fruitful. Mass selection for faster growth might produce animals that had higher intake of metabolizable energy by virtue of faster filtrating behavior.