Journal of Tropical Oceanography ›› 2014, Vol. 33 ›› Issue (4): 69-76.doi: 10.11978/j.issn.1009-5470.2014.04.009cstr: 32234.14.j.issn.1009-5470.2014.04.009

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The relationship between tolerance to fresh water and growth traits for desalination culture in families of Pacific white leg shrimp, Litopenaeus vannamei

YANG Hai-peng1, 2, HU Chao-qun1, ZHANG Lü-ping1, REN Chun-hua1, WANG Yan-hong1   

  1. 1. Key Laboratory of Marine Bio-resources Sustainable Utilization, Key Laboratory of Applied Marine Biology of Guangdong Province and Chinese Academy of Sciences, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 510301, China; 2. University of Chinese Academy of Sciences, Beijing 100049, China
  • Received:2013-02-06 Revised:2013-05-21 Online:2014-08-11 Published:2014-08-11
  • Contact: 胡超群, E-mail: hucq@scsio.ac.cn

Abstract:

Previous investigations have shown that the rate of crustacean survival in salinity stress test was strongly relative to their future growth. In this research, a freshwater stress test followed with desalination culture experiment was carried out on 10 families of Pacific white leg shrimp, Litopenaeus vannamei, in the same batch with different genetic backgrounds. The freshwater stress survival rate and desalination culture growth traits in different families were determined; at the same time the relationship between them was also analyzed. Our study indicated that there was a significant difference (p<0.01) among survival rates under freshwater stress of the 10 families. During the desalination culture, the survival rates of the 10 families were significantly different (p<0.01); there were differences (p<0.05) among body weight growth rate, the specific growth rate, body length growth rate, and feed coefficient of the 10 families performance. The family TF-1 had the highest survival rate under freshwater stress (63%) and desalination culture (51%), as well as body weight growth rate (17.54 mg·d-1), specific growth rate (6.68), and body length growth rate (0.53 mm·d-1); however, its feed coefficient (0.82) was lower than the other families. The survival rate under freshwater stress was positively correlated to desalination culture survival rate (r=0.855, p<0.01), body weight growth rate (r=0.636, p<0.05), specific growth rate (r=0.617, p<0.05), and body length growth rate (r=0.805, p<0.01), while it had a negative correlation with feed coefficient (r= -0.748, p<0.05). The research showed that survival rate of the shrimp postlarvae to freshwater stress test could represent the postlarvae’s quality on tolerance to fresh water, which will be an important reference index among the L. vannamei postlarvae’s desalination culture. Meanwhile, the family TF-1 would be used to breed high freshwater tolerance and fast-growing variety of L. vannamei.

Key words: family, tolerance to fresh water, growth trait

CLC Number: 

  • Q178.53