Overview
Acipenser dabryanus (pinyin: d {acute over (x) 2 n sh einer (Acipenser). is a genus of fish in the Acipenseridae sturgeon, common name Sand Lazi, Yangtze sturgeon, sturgeon, small sub - species of the waxes of the .
origin in Yangtze River origin in Yangtze River.
Morphological Feature
dorsal fin 2, 12 - 13; article 3 of the anal fin, 22 - 24; pectoral strips 21 ~ 26; ventral (belly) stripe 7; gill rakers and vertebrae 14 ~ 18 dorsal fin 2, 12 - 13; article 3 of the anal fin, 22 - 24; pectoral strips 21 ~ 26; ventral (belly) stripe 7; gill rakers and vertebrae 14 ~ 18 . 57 - 60, the body length / height of 9. 1 9. 8, respectively, for 5. 7 6.
6 times in head length, head width of 1. 6 2. 2 times in head length of proboscis, diameter of 3. 2 4. 0 times, eye diameter 4. 4 6. 7 times, as the eye spacing of 3. 2 and 3. 7 times as a length of 1. 5 1. 8 times, length and tail height of 1. 0 2. 4 times, the elongated body, and a flat side to the front cylinder, rear side of the snout to the tip is short, the eye - side bits,eye - spacing is relatively narrow, and slightly elevated mouth small, slightly longer than the maxillary and mandibular, maxillary posterior end slightly beyond the immediate edge mouth small, slightly longer than the maxillary and mandibular, maxillary posterior end slightly beyond the immediate edge .
premaxilla, maxilla and mandible with teeth of each row, the vomer, palatine and on the surface of the tongue of the toothless premaxilla, maxilla and mandible with teeth of each row, the vomer, palatine and on the surface of the tongue of the toothless . hole up to the gills, gill cover film such that the front portion of the narrow portion is connected to the false hole up to the gills, gill cover film such that the front portion of the narrow portion is connected to the false .
developed gills, the gill rakers sharp sparse developed gills, the gill rakers sharp sparse . anus located immediately in front of the pelvic fin base and anal anus located immediately in front of the pelvic fin base and anal .
to anus, in front of the abdomen has a membrane, without scales, only in the male's anal fins at both sides of the base each have a row of 15 ~ 16 round scale to anus, in front of the abdomen has a membrane, without scales, only in the male's anal fins at both sides of the base each have a row of 15 ~ 16 round scale . without lateral, dorsal fin origin lies in the female pelvic fin base and anal fins at the mid point between the starting point,male anal without lateral, dorsal fin origin lies in the female pelvic fin base and anal fins at the mid point between the starting point,male anal .
pelvic fins are located near the caudal - fin origin point pelvic fins are located near the caudal - fin origin point . in the anal area is relatively long is used as a starting point of the dorsal fin base is located below the end of the male fish, females slightly rearward of the pectoral fins are fan - shaped X - ray, the fleshy base shanks in the anal area is relatively long is used as a starting point of the dorsal fin base is located below the end of the male fish, females slightly rearward of the pectoral fins are fan - shaped X - ray, the fleshy base shanks .
developed pelvic - fin origin than to pectoral fin from fin proximal caudal fin fork is developed pelvic - fin origin than to pectoral fin from fin proximal caudal fin fork is . Type Type .
body white, slightly transparent body white, slightly transparent . the ventral surface of the body 2 of the row of fine black dots the ventral surface of the body 2 of the row of fine black dots .
caudal end interspersed with many black dots caudal end interspersed with many black dots .
Experimental Investigations Into Some Reproduction
Acipenser dabryanus is generally considered to have two reproductive type, i.e., spring (March - April) and autumn (11 - 12 month) scale spawning in spring and the reproductive type is big scale spawning in spring and the reproductive type is big .
Acipenser dabryanus in Yibin Yangtze River other than segment spawning, the eggs sink sticky, black, Indian small - grained Acipenser dabryanus in Yibin Yangtze River other than segment spawning, the eggs sink sticky, black, Indian small - grained . 1973 capture of male - to - tail length was 91. 5 cm, body weight of 9. 2 kg, reached sexual maturity
also caught a gang. The eggs of the sturgeon females reach soon, weighing. 25 kg males tend to have a minimum age of sexual maturity at the age of 4, female 6 instars males tend to have a minimum age of sexual maturity at the age of 4, female 6 instars .
In This Paper And Its Value
Yangtze River fishery is one of the original object Yangtze River fishery is one of the original object . as the head of the Chinese Paddlefish (primitive teleosts, has important scientific value as the head of the Chinese Paddlefish (primitive teleosts, has important scientific value .
had achieved over the complete artificial breeding proces, but due to the amount of resources was very small, a large - scale artificial breeding and propagation are not carried out had achieved over the complete artificial breeding proces, but due to the amount of resources was very small, a large - scale artificial breeding and propagation are not carried out .
Protection Level
. Red Book of China's national protecting animals that grades: Red Book of China's national protecting animals that grades: .
is the United Nations that are members of the International Trade in Endangered Species of Wildlife "one is the United Nations that are members of the International Trade in Endangered Species of Wildlife "one .
Medicinal Value
Names of Chinese Paddlefish (swim bladder as a source of the Acipenseridae sturgeon swim bladder of the animals up to Names of Chinese Paddlefish (swim bladder as a source of the Acipenseridae sturgeon swim bladder of the animals up to . efficacies of nourishing efficacies of nourishing .
Indications for the treatment, emission, impotence, premature ejaculation, hemoptysis, hematemesis, hematochezia, E. N., neurasthenia, etc taste sweet, salty, flat taste sweet, salty, flat .
to the kidney, the liver meridian and to the kidney, the liver meridian and . Oral Dosage: decocted in water, 15 g of a 25 Oral Dosage: decocted in water, 15 g of a 25 .
fauna distribution resources of the Yangtze River, upstream and its major tributaries and large lakes within fauna distribution resources of the Yangtze River, upstream and its major tributaries and large lakes within . foundation for scientific harvest and storage net, with a hook catching foundation for scientific harvest and storage net, with a hook catching .
captured after taking out the swim bladder, used to cool or warm water and then go to blood - purifying membrane and their appendages, and a plurality of aligned after flattening,drying in the sun captured after taking out the swim bladder, used to cool or warm water and then go to blood - purifying membrane and their appendages, and a plurality of aligned after flattening,drying in the sun . textual criticism originally appeared in "Chinese Medicine Animal Records" textual criticism originally appeared in "Chinese Medicine Animal Records" .
crude drug identification is a grayish white leathery keratinous film that is translucent, or transparent and colorless, shiny, shaped like a blade, slitting, or following the contour, odorless, tasteless crude drug identification is a grayish white leathery keratinous film that is translucent, or transparent and colorless, shiny, shaped like a blade, slitting, or following the contour, odorless, tasteless . chemical components of the main containing collagen (RCI) and 80% chemical components of the main containing collagen (RCI) and 80% .
Oxytocic
Something used for sturgeon and sturgeon's pituitary gland, acetone dehydration and drying are saved for a certain time Something used for sturgeon and sturgeon's pituitary gland, acetone dehydration and drying are saved for a certain time . dose: female sturgeon is 1.7 mg / kg body weight, male sturgeons are halved
injection times: once or twice injection site injection times: once or twice injection site .: : .
bases of pectoral fins bases of pectoral fins.
Artificial Insemination And Hatching
Roe (s) to be stranded out immediately when the insemination was carried out with the artificial insemination operation Roe (s) to be stranded out immediately when the insemination was carried out with the artificial insemination operation . home fish is similar, the differences are: 1) semen with river water (not saline) is diluted about 20 fold after use; the sperm and egg are mixed, stirred for a long time, and the river to rinse the eggs 2 ~ 3 times after adding above fine mud water and the resulting mixture was stirred for about 30 minutes to glue; to create the fertilized egg into an incubator, and then stirring is continued for about 10 minutes, so as to prevent the bonding effect of sturgeon eggs hatching effect home fish is similar, the differences are: 1) semen with river water (not saline) is diluted about 20 fold after use; the sperm and egg are mixed, stirred for a long time, and the river to rinse the eggs 2 ~ 3 times after adding above fine mud water and the resulting mixture was stirred for about 30 minutes to glue; to create the fertilized egg into an incubator, and then stirring is continued for about 10 minutes, so as to prevent the bonding effect of sturgeon eggs hatching effect .
fertilized eggs into the water 5 to 6 minutes started swelling and the size of the original is 2 mm, 2 mm by 3 mm, and the polar spot, clear color, about 20 minutes and the viscosity,to 30 min viscosity has reached the "climax", at which time the egg is solid and the outer film by kneading with the fingers is elastic, has been steering the animal pole above fertilized eggs into the water 5 to 6 minutes started swelling and the size of the original is 2 mm, 2 mm by 3 mm, and the polar spot, clear color, about 20 minutes and the viscosity,to 30 min viscosity has reached the "climax", at which time the egg is solid and the outer film by kneading with the fingers is elastic, has been steering the animal pole above . not oosperm sucked the water slowly, the polarity of the spot color and turbidity, by kneading with the fingers is easily cracked, Animal - Pole of the magnetic field, produces an exciting phenomenon, the microscopic disorder of not oosperm sucked the water slowly, the polarity of the spot color and turbidity, by kneading with the fingers is easily cracked, Animal - Pole of the magnetic field, produces an exciting phenomenon, the microscopic disorder of .
cleavage from the different incubation temperatures of Comparative Material From U.S. Pat. No. Acipenser dabryanus eggs for incubation at a temperature of 18 - 20. degree. C., temperature above 22 degrees Celsius or lower than 10. degree. C. on embryonic development adversely hatching tank water temperature changes in the 15 to 19. 2. degree. C., when the average temperature is 16. 2 lt; 0 gt; c,The 138 hours all of the larvae have hatched from
start hatching hatched to all of the time was 14 hours start hatching hatched to all of the time was 14 hours . Chongqing Fisheries Research Laboratory, 1980 - 1986 was bred in the study. The results showed that the sturgeon in the pituitary gland or LRH - A was of Spawning Hormones are feasible, which is effective at doses of 8 mg / kg b.w. and 30 - 50ug / kg body weight, and mixing both use the same advice once or twice injection showed no obvious difference in temperature of 19 to 27 DEG C, the effect of the drug is 17 - 25 hours;The fish is graded from ovum pick - up method is typically performed abroad than laparotomy incision or for ovum pick - up method is effective, and does not damage the parent
domestication and cultivation of Acipenser dabryanus males through sperm in liquid nitrogen (-196. degree. C.) 214 days. After the fertilizing capacity for hybridization and hybrid hatched fry
Related News
The edge discovers the "Monster" for being affirmed that being national treasure vanish (19 October 2007 in the afternoon, Sichuan Yibin city salts the Pingba near the Yangtze River, a weight 3 kilograms of "Monster" by the river rushed onto the beach, a migrant worker to fish ready for sale by the masses in a timely manner to the local fishery administration department report via The edge discovers the "Monster" for being affirmed that being national treasure vanish (19 October 2007 in the afternoon, Sichuan Yibin city salts the Pingba near the Yangtze River, a weight 3 kilograms of "Monster" by the river rushed onto the beach, a migrant worker to fish ready for sale by the masses in a timely manner to the local fishery administration department report via . fishery bureau confirmed, this fish is referred to as" aquatic giant panda "of national - level protected animal, extinct for many years the Paddlefish ( fishery bureau confirmed, this fish is referred to as" aquatic giant panda "of national - level protected animal, extinct for many years the Paddlefish (.
through emergency treatment, and the evening, the relevant departments to release it to the Yangtze River in Sichuan through emergency treatment, and the evening, the relevant departments to release it to the Yangtze River in Sichuan .: was successful to realize the artificial propagation of twospot reporters recently in yibin institute learns of rare aquatic animals,The research institute used artificial propagation of Acipenser dabryanus were sub - species of fish, successfully bred a generation of Amur Sturgeon (Acipenser schrenki : was successful to realize the artificial propagation of twospot reporters recently in yibin institute learns of rare aquatic animals,The research institute used artificial propagation of Acipenser dabryanus were sub - species of fish, successfully bred a generation of Amur Sturgeon (Acipenser schrenki .
projectson rare aquatic animals according to Yibin, deputy director of the Institute, Senior Engineer Zhou Liang, from 1993, the start up of Amur sturgeon, paddlefish, sturgeon, mullet, of projectson rare aquatic animals according to Yibin, deputy director of the Institute, Senior Engineer Zhou Liang, from 1993, the start up of Amur sturgeon, paddlefish, sturgeon, mullet, of . at the beginning of summer study, by researchers in 1999, 2000, his propagation of Acipenser dabryanus parent generation (its species of fish from natural waters obtained) species of fish, successfully bred a generation of Amur Sturgeon (Acipenser schrenki Brandt, the success of the at the beginning of summer study, by researchers in 1999, 2000, his propagation of Acipenser dabryanus parent generation (its species of fish from natural waters obtained) species of fish, successfully bred a generation of Amur Sturgeon (Acipenser schrenki Brandt, the success of the .
Zhou Liang told reporters,That is the world's first offering was of the Artificial Breeding (before the artificial propagation of fish species in natural waters are obtained, which marked that we can ensure that the "aquatic giant panda" species, in a natural water which does not cause the extinction, by propagation, it can let posterity Zhou Liang told reporters,That is the world's first offering was of the Artificial Breeding (before the artificial propagation of fish species in natural waters are obtained, which marked that we can ensure that the "aquatic giant panda" species, in a natural water which does not cause the extinction, by propagation, it can let posterity . Acipenser dabryanus and arrived in Shanghai to attend the Expo on April 30, 2010, Yibin of rare fish moved to Shanghai in the Yangtze River to protect the sturgeon farming base, formally entering World Pavilion of Shanghai World Expo, attend the Expo show Acipenser dabryanus and arrived in Shanghai to attend the Expo on April 30, 2010, Yibin of rare fish moved to Shanghai in the Yangtze River to protect the sturgeon farming base, formally entering World Pavilion of Shanghai World Expo, attend the Expo show .
from Yibin to be airlifted to Shanghai to attend the World Expo of Yangtze Rare Fish, are referred to as" aquatic giant panda "World Wildlife Fund, is listed as a "top ten endangered species of aquatic animals" was one of 12; has had its world - class aquarium Gold Award, is referred to as the" Oriental "Mermaid" Myxocyprinus asiaticus 100 bar; and in the Upper Reaches of the rare endemic fish in Rock Carp, Procypris Rabaudi from Yibin to be airlifted to Shanghai to attend the World Expo of Yangtze Rare Fish, are referred to as" aquatic giant panda "World Wildlife Fund, is listed as a "top ten endangered species of aquatic animals" was one of 12; has had its world - class aquarium Gold Award, is referred to as the" Oriental "Mermaid" Myxocyprinus asiaticus 100 bar; and in the Upper Reaches of the rare endemic fish in Rock Carp, Procypris Rabaudi . 20 bar wherein the Paddlefish (each length in meters and weight in kilograms by 8 20 bar wherein the Paddlefish (each length in meters and weight in kilograms by 8 .
20 of Rock CARP Procypris Rabaudi (Tchang), each having a basis weight of 0.5 kg as aquarium of Myxocyprinus asiaticus in small volume and length of each of only 20 cm as aquarium of Myxocyprinus asiaticus in small volume and length of each of only 20 cm .
above rare fishes in the afternoon of 30 April will formally enter the World Expo Shanghai Pavilion, after the show,Acipenser dabryanus returned to Yibin rare animals domesticated water institute, mullet, Rock carp will be released in the Shanghai area above rare fishes in the afternoon of 30 April will formally enter the World Expo Shanghai Pavilion, after the show,Acipenser dabryanus returned to Yibin rare animals domesticated water institute, mullet, Rock carp will be released in the Shanghai area . 4 12 November 2012, Chongqing Guo Changjiang fishermen in the waters of Jiaduo bycatch by mistake was rare, the overall length of 80 cm and length 70 cm, 32 cm and weighs 3. 3 kg, was in good health, eventually being released in
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