Rare bass carp (gobiocypris rarus) is Cypriniformes, Cyprinidae, (on the left, "fish" right "Dan") subfamily, bass carp are. Commonly known as: Gold White Mother, ink line fish. English name: rare gudgeon. Endangerment: Endangered. Body small, slender, slightly side flat, round belly. Medium-large head. Kiss blunt. Mouth small, terminal position, arc. Lips thin, no. Eye nearly snout. Lateral line incomplete, intermittent back-end was like, up to more than pelvic fin base. Column scales 31-34. Dorsal fin short, not hardened, the starting point slightly past the end of the base. Dorsal gray, abdomen white, with pale yellow lateral longitudinal lines 1, caudal fin base more visible spots. Habitat in the half stone, half of the bottom sediment quality and water than small plants, such as rice fields, ditches, ponds, small rivers and other micro-water environment. In more turbid water of life. Hi cluster activities. To small aquatic invertebrates. Breeding season from March to November, under the conditions in the annual breeding artificial insemination. In the appropriate temperature conditions and adequate food, about 4 months after hatching to reach sexual maturity and spawning. Usually once every female fish can lay 300 or so. This species is endemic to China, only found in tributaries of the Dadu River in Sichuan Province Hanyuan Liu Shahe and Chengdu in the vicinity of small rivers. Small number of wild state. As the distribution of narrow range, environmental conditions, the instability of this species posing a threat to normal life. Currently, the species as a new experimental fish rearing and research.
Translated by Google
No. 2
Rare bass carp (gobiocypris rarus) is Cypriniformes, Cyprinidae, (on the left, "fish" right "Dan") subfamily, bass carp are. Commonly known as: Gold White Mother, ink line fish. English name: rare gudgeon. Endangerment: Endangered. Body small, slender, slightly side flat, round belly. Medium-large head. Kiss blunt. Mouth small, terminal position, arc. Lips thin, no. Eye nearly snout. Lateral line incomplete, intermittent back-end was like, up to more than pelvic fin base. Column scales 31-34. Dorsal fin short, not hardened, the starting point slightly past the end of the base. Dorsal gray, abdomen white, with pale yellow lateral longitudinal lines 1, caudal fin base more visible spots. Habitat in the half stone, half of the bottom sediment quality and water than small plants, such as rice fields, ditches, ponds, small rivers and other micro-water environment. In more turbid water of life. Hi cluster activities. To small aquatic invertebrates. Breeding season from March to November, under the conditions in the annual breeding artificial insemination. In the appropriate temperature conditions and adequate food, about 4 months after hatching to reach sexual maturity and spawning. Usually once every female fish can lay 300 or so. This species is endemic to China, only found in tributaries of the Dadu River in Sichuan Province Hanyuan Liu Shahe and Chengdu in the vicinity of small rivers. Small number of wild state. As the distribution of narrow range, environmental conditions, the instability of this species posing a threat to normal life. Currently, the species as a new experimental fish rearing and research. Bass carp (gobiocypris rarus) is endemic to China, a small cyprinid fish, located in Sichuan Hanyuan, Shimian, Shuangliu County, Dujiangyan City, Peng City and other places. Since 1990, Institute of Hydrobiology Institute has it as a new experimental animal for the purpose of its distribution area and has habits, morphology and taxonomy, reproduction, embryonic development, embryonic development, growth, feeding, ecological factor of adaptability, karyotype and isozyme, farming methods, propagation techniques, anesthesia, inbred cultivation and other aspects of the systems. Now, we have carried out their feeding and management standardization, and get a full 21 generations of brother and sister inbred fish, away from the goal of fostering standards of laboratory animals has been very close. Rare bass carp as a new experimental animal has the following advantages: (1) into a body length 38-85mm, easy feeding. (2) in breeding condition, some three months after hatching of individual maturation, about four months to breed. (3) rare bass carp in the natural spawning can be between 14-30 ℃, temperature conditions in the laboratory can achieve Zhounian breeding, any time of year are eligible for eggs and larvae, not season. (4) types of fish are spawning a row, the same fish lay eggs once every four days, hundreds of eggs each time. Short-term availability of a large number of descendants of the same parent. (5) sticky eggs, egg membrane diameter 1.25-1.70mm, compared with zebrafish, medaka eggs large. Transparent egg membrane, can be clearly observed embryonic development, but also easy to operate nuclear transplantation experiments. (6) temperature of embryonic development to adapt to a wide range of normal embryonic development at 13-30 ℃, the temperature can be controlled by controlling the growth rate. (7) on the temperature, carbon dioxide, oxygen tolerance ability. So far, the literature on the rare bass carp have 55, except on the classification and biology research papers 21, the rest 34 are rare bass fish carp as the experimental application of the coverage. According to incomplete statistics, China has more than a dozen universities and research institutes to carry out research using the rare bass carp, which involves fish, genetics, environmental science, embryology, physiology and ecology and other fields. In the field of fish diseases, Wang Tiehui confirmed the rare bass carp and other carp hemorrhage virus of extremely sensitive, can be rare bass as grass carp hemorrhagic virus, anti-breeding model. As a result of research material as a rare bass carp, grass carp when the individual to overcome the use of large, long generation cycle, a short breeding cycle, feeding difficulties and difficulties in drawing, which greatly accelerated the anti-hemorrhagic virus of grass carp breeding process. In the field of environmental science, many trials confirmed that the rare bass carp for heavy metals, pesticides and other chemicals are very sensitive to the toxicity testing of chemicals and environmental water samples ideal material for toxicity testing. ZHOU Yong-xin rare bass carp and other established 5 and 7 days sub-chronic toxicity test model. China Environmental Science Research Institute not only for the use of rare bass carp fish toxicity tests, but also as a rare bass carp biological subjects included in the "National Environmental Protection Agency qualified laboratory guidelines (1996)" and "Water and wastewater monitoring and analysis methods." (fourth edition) in. In the ecological effects of dioxin and early warning research, the Institute of Hydrobiology, studies have shown that the rare bass carp of 2,3,7,8-tcdd extremely sensitive to low concentrations can be teratogenic, death, liver cell damage . Low concentrations of 2,3,7,8-tcdd erod activity can be induced, and the concentration of enzyme activity and has an excellent exposure dose - response relationship, that erod biological test method is a fast, simple, sensitive biological method can be used as a biomarker of fish at different developmental stages of evaluation of toxic effects and bioaccumulation. Currently, the Institute of Hydrobiology, Chinese Academy of Sciences, Research Center for Eco-Environmental Sciences, etc. are using the rare bass carp as test material in the "evaluation of long-term low-dose endocrine disruptor effects in fish exposed to experimental models," "environmental endocrine disrupting chemicals in biological screening "and other aspects of work. In the field of genetics, researchers have carried out genome operation, dna assay, cytochrome b sequence analysis and other aspects of the work. In addition, Jia side equal to a rare bass artificial gynogenetic crucian carp, artificial androgenesis studies, the establishment of a single rare bass carp sexual development technology for the rapid establishment of pure lines offers a new way. Zhong Jiayu and other materials with rare bass carp as to optimize the electric pulse fish - sperm-mediated gene transfer method. Hu Wei, etc. by heterogeneous nuclear transfer, nuclear transfer continuous relationship between nucleus and cytoplasm of the fish's basic research issues are discussed. Because large fish breeding, in vitro fertilization, in vitro growth characteristics, so that genetically modified, cloned and other technical operations more convenient to experiment with many mammals, especially the rare bass carp can breed all year round, and sexual maturity faster, therefore an ideal material for genetic research.