title: Length-weight relationship and condition factor of giant tiger shrimp, Penaeus monodon (Fabricius, 1798) from four breeding families.
abstract: BACKGROUND
  Length-weight relationships and condition factors of giant tiger shrimp Penaeus monodon (Fabricius, 1798) from four breeding families (family S: South China seas family, family A: African family, family SA: ♂ South China seas family × ♀ Africa family, family AS: ♂ Africa family × ♀ South China seas family) were evaluated in this study.
  
  
  CONCLUSIONS
  Length-weight relationships can be expressed as W = 0.0239BL(2.789) (R (2) = 0.8977) in family S, W = 0.0206BL(2.9107) (R (2) = 0.9107) in family A, W = 0.0211BL(2.831) (R (2) = 0.8869) in family SA, and W = 0.0249BL(2.781) (R (2) = 0.9159) in family AS. The growth of P. monodon from four breeding families follows a negative allometric trend. Fulton's body condition factor (K) was not significantly different in males, while in females, the highest K (3.07) was observed in family AS, and the lowest K was found in family A (1.88). Results from the present study indicate that the cross group family AS (♂ Africa family × ♀ South China seas family) has obvious heterosis in females. This may suggest that the direction of further breeding of P. monodon, should be conducted by using Africa family as male parent, and South China seas family as female parent. Results from the present study will provide valuable information on selective breeding in P. monodon. Methodology used in the present study can also be applied in other similar species.
authors.affiliation: South China Sea Resource Exploitation and Protection Collaborative Innovation Center, Sun Yat-Sen University, Guangzhou, 510006 China.|South China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Key Laboratory of South China Sea Fishery Resources Exploitation and Utilization, Ministry of Agriculture, Guangzhou, 510300 China.|College of Fisheries and Life Science, Shanghai Ocean University, Shanghai, 201306 China.
authors.forename: Yundong
authors.initials: Y
authors.lastname: Li
authors.affiliation: South China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Key Laboratory of South China Sea Fishery Resources Exploitation and Utilization, Ministry of Agriculture, Guangzhou, 510300 China.
authors.forename: Falin
authors.initials: F
authors.lastname: Zhou
authors.affiliation: South China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Key Laboratory of South China Sea Fishery Resources Exploitation and Utilization, Ministry of Agriculture, Guangzhou, 510300 China.
authors.forename: Zhenhua
authors.initials: Z
authors.lastname: Ma
authors.affiliation: South China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Key Laboratory of South China Sea Fishery Resources Exploitation and Utilization, Ministry of Agriculture, Guangzhou, 510300 China.
authors.forename: Jianhua
authors.initials: J
authors.lastname: Huang
authors.affiliation: South China Sea Resource Exploitation and Protection Collaborative Innovation Center, Sun Yat-Sen University, Guangzhou, 510006 China.|South China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Key Laboratory of South China Sea Fishery Resources Exploitation and Utilization, Ministry of Agriculture, Guangzhou, 510300 China.|College of Fisheries and Life Science, Shanghai Ocean University, Shanghai, 201306 China.
authors.forename: Shigui
authors.initials: S
authors.lastname: Jiang
authors.affiliation: South China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Key Laboratory of South China Sea Fishery Resources Exploitation and Utilization, Ministry of Agriculture, Guangzhou, 510300 China.
authors.forename: Qibin
authors.initials: Q
authors.lastname: Yang
authors.affiliation: South China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Key Laboratory of South China Sea Fishery Resources Exploitation and Utilization, Ministry of Agriculture, Guangzhou, 510300 China.
authors.forename: Tao
authors.initials: T
authors.lastname: Li
authors.affiliation: School of Biological Sciences, Flinders University, GPO Box 2100, Adelaide, SA 5001 Australia.
authors.forename: Jian G
authors.initials: JG
authors.lastname: Qin
keywords: Breeding family; Condition factor; Length–weight relationships; Penaeus monodon