Comparative performance of growth, vertebral structure and muscle composition in diploid and triploid Paralichthys olivaceus

Growth, skeletal structure and muscle composition of cold-shock-induced triploid olive flounder Paralichthys olivaceus were investigated. The average values of total length and total weight of triploids were higher than those of diploids from 5 to 11months posthatch (mph). The growth difference disa...

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Bibliographic Details
Published in:Journal of Fish Diseases
Main Authors: Liu, Hui, Wu, Zhihao, Zhu, Xiangping, Song, Zongcheng, Hu, Jinwei, Wang, Lijuan, Li, Jun, You, Feng
Format: Report
Language:English
Published: WILEY 2018
Subjects:
diploid and triploid
growth trait
muscle composition
olive flounder Paralichthys olivaceus
vertebral structure
Fisheries
Marine & Freshwater Biology
Veterinary Sciences
SALMON SALMO-SALAR
COD GADUS-MORHUA
TENCH TINCA-TINCA
BASS DICENTRARCHUS-LABRAX
FATTY-ACID-COMPOSITION
ATLANTIC SALMON
GONADAL DEVELOPMENT
SEA BASS
SCOPHTHALMUS-MAXIMUS
DIETARY PHOSPHORUS
Atlantic salmon
Gadus morhua
Salmo salar
Scophthalmus maximus
Online Access:http://ir.qdio.ac.cn/handle/337002/160185
https://doi.org/10.1111/jfd.12846
Description
Summary:Growth, skeletal structure and muscle composition of cold-shock-induced triploid olive flounder Paralichthys olivaceus were investigated. The average values of total length and total weight of triploids were higher than those of diploids from 5 to 11months posthatch (mph). The growth difference disappeared after 11mph. The skeletal structure of flounder at 11mph was observed by X-ray imaging method. There are four kinds of vertebral deformity including vertebrae fusion, one-sided compression, two-sided compression and vertically shifted. The trunk region (V8-18) and tailing end of the vertebral column were the predominant locations of deformity. In general, the frequencies of vertebral deformities in triploids (60.0%) were higher than those in diploids (33.3%, p<0.05). Both the number of fish with deformed vertebrae and the average frequencies of deformed vertebrae in triploids were significantly higher than those in diploids (p<0.05). The muscle tissues of diploid and triploid flounder at 11mph contain the same types of fatty acid and free amino acid profiles. The number of fatty acids with significant higher contents in diploids and triploids was one and ten, respectively (p<0.05). The contents of free amino acids showed no difference between triploid and diploid fish.

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