Artificial cross-breeding method for Odontobutis obscura and Oxyeleotris marmorata

Abstract

The inveniton provides an artificial cross-breeding method for Odontobutis obscura and Oxyeleotris marmorata, belonging to the technical field of artificial cross-breeding of fishes. The method comprises the following steps: selecting a plurality of pairs of sexually-mature male Odontobutis obscura and female Oxyeleotris marmorata, and carrying out placing in a spawning pool; placing Odontobutis obscura spawning devices with a number larger than the number of the pairs of the sexually-mature male Odontobutis obscura and female Oxyeleotris marmorata into the spawning pool, wherein the spawning device employs a drum body of a PVC pipe as a mating place for the male Odontobutis obscura and the female Oxyeleotris marmorata, and the PVC pipe is hung on the position of 30 to 40 cm of the spawning pool with a rope; controlling illuminance of the environment where the spawning pool locates to be no more than 60 lux, environmental noise to be no more than 60 db and water temperature to be in a range of 22 to 29 DEG C until the female Oxyeleotris marmorata leaves the spawning devices and spawning is completed; and taking the PVC pipes with roes out of the spawning pool, placing the pipes on the two sides of a rectangle support and then placing the rectangle support in an incubating pool, introducing oxygen into incubating water until the oxygen content in the water is no less than 5 mg / m3, and controlling the temperature of the incubating water to be in a range of 25 to 30 DEG C and the illuminance of the incubating pool to be less than 60 lux at the same time until fries are incubated.

Description

technical field [0001] The invention relates to a method for artificial hybridization of snakehead channa and snakehead cloud, and belongs to the technical field of artificial hybridization of fish. Background technique [0002] Sand pond snakehead (Odontobutiso obscurus) belongs to the order Perciformes, and belongs to the genus Odontobutiso obscurus. Commonly known as: Tang Channa, Shawu Channa, Tuhanba, Tugougong. English name: Darksleeper. The body is thick and strong, the head is big and wide, slightly flattened, the abdomen is round, and the rear side is flat. Mouth large, superior, with oblique cleft reaching below center of eye. Upper and lower jaws with fine teeth. The vomer has no teeth. The eyes are small and prominent. Two dorsal fins, each separate. All fins have no spines. The pectoral fins are large and rounded; the posterior edge of the caudal fin is slightly rounded. No lateral lines. The body is dark brown with yellow luster, the abdomen is light ...

AI Technical Summary

Problems solved by technology

However, due to the slow growth of sand pond snakeheads and small individuals, it is difficult to obtain high yields in the breeding process, while the cloud-spotted sharp pond snakeheads have the advantages of fast growth and large individuals, but they have high temperature requirements and cannot survive the winter naturally in my country.