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Int. J. Mol. Sci. 2013, 14(11), 21504-21512; doi:10.3390/ijms141121504
Short Note

Effects of Polymorphisms in Pepsinogen (PEP), Amylase (AMY) and Trypsin (TRY) Genes on Food Habit Domestication Traits in Mandarin Fish

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Key Laboratory of Freshwater Animal Breeding, Ministry of Agriculture, College of Fisheries, Huazhong Agricultural University, Hubei Collaborative Innovation Center for Freshwater Aquaculture, Wuhan 430070, China These authors contributed equally to this work.
* Author to whom correspondence should be addressed.
Received: 9 September 2013 / Revised: 10 October 2013 / Accepted: 18 October 2013 / Published: 30 October 2013
(This article belongs to the Section Biochemistry, Molecular Biology and Biophysics)
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Abstract

Mandarin fish (Siniperca chuatsi) have a peculiar feeding habit of only accepting live fish prey and refusing dead prey and artificial diets. However, previous research has shown that some individuals accept dead prey after gradual domestication. Digestive enzymes are correlated with feeding habits in fish. In the current study, SNPs in the mandarin fish genes for pepsinogen (PEP), amylase (AMY), and trypsin (TRY) were evaluated for associations with feeding habits in domesticated mandarin fish by scanning their complete genomic sequence. In total, two SNPs were found in PEP, one was found in TRY, and none were found in AMY. The D1(CTCC) and D5(TTTT) diplotypes in the PEP gene tended to show strong effects on the feeding habits of domesticated fish (p < 0.01). The results indicate that PEP may be associated with the genetic mechanism for feeding habits in mandarin fish, and the D1(CTCC) and D5(TTTT) diplotypes in the PEP gene may be useful markers for selecting mandarin fish with appropriate feeding habits for domestication.
Keywords: mandarin fish; single nucleotide polymorphisms (SNPs); pepsinogen (PEP); amylase (AMY); trypsin (TRY); food habit domestication mandarin fish; single nucleotide polymorphisms (SNPs); pepsinogen (PEP); amylase (AMY); trypsin (TRY); food habit domestication
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Yi, T.; Sun, J.; Liang, X.; He, S.; Li, L.; Wen, Z.; Shen, D. Effects of Polymorphisms in Pepsinogen (PEP), Amylase (AMY) and Trypsin (TRY) Genes on Food Habit Domestication Traits in Mandarin Fish. Int. J. Mol. Sci. 2013, 14, 21504-21512.

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