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Studies on the Reproductive Biology of Pseudorasbora Parva and the Assessments on Its Potential Application

Author: ZhangLinDa
Tutor: ZhangXiaoXue
School: Guizhou University
Course: Animal Genetic Breeding and Reproduction
Keywords: Wheat fish Reproductive biology Gonadal development Chromosome Nutrients Potential applications
CLC: S917.4
Type: Master's thesis
Year: 2009
Downloads: 71
Quote: 0
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Abstract


In this paper, direct observation , said the weight of the law on wheat breeding biology of the fish were ; paraffin section, HE staining inquiry in early January to early May wheat fish gonadal development rules ; through artificial injection LRH the -A2 the reminder row Act , discussed the wheat fish artificial propagation technology ; adoption of PHA colchicine in vivo injection , and gills wire cell extracts prepared by two methods wheat fish chromosome specimens obtained preliminary karyotype of wheat fish data ; measurement and analysis of fish muscle nutrients of wheat using conventional methods , and the initial potential of wheat fish assessment . The experimental results are as follows : 1 , wheat and fish breeding season 4-6 month , some sustainable to July . Wheat fish female absolute fecundity was 417 ± 334 tablets , 213 ± 151 grains / g body weight , gonad index female relative fecundity was 10.2 ± 3.92 % , 1.58 ± 0.78 % male . Spawning batches . Absorbent egg diameter 0.6-0.7 × 0.8-1.1mm, water-swelling the egg diameter 1.1-1.3 × 1.3 - 1.7mm . Male producing sperm about of 6.02x10 ~ 7 / mL , sperm head diameter 2.78 ± 0.22μm, sperm motility time of up to 1.5h. 2 ears of corn fish containing meat was 75.85% , the muscles fresh sample moisture content of 77.59% , 16.11% crude protein content , crude fat content of 3.20% , ash content of 1.71% , and the amino acid content of 10.41% , essential amino acids total 4.69% , essential amino acids and total amino acid ratio was 45.05% , essential amino acids and non - essential amino acid ratio was 81.97% , the proportions of the essential amino acids to meet the FAO / WHO standards , essential amino acid index of 45.64 . 3 , wheat fish chromosomes 2n = 50, the chromosome length the vast majority of 0.5 μm (82 ± 4.69% ) , followed by 1.0μm (13.8 ± 4.49%), chromosome length range of about 0.5 ~ 1.0μm, the longest and shortest length of the chromosome The ratio of 2, is a small chromosome .

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CLC: > Agricultural Sciences > Aquaculture, fisheries > Aquatic basic science > Aquatic Biology > Aquatic Zoology
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