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Breeding method of artificial parents of sipunculus nudus

A kind of star worm, parent body technology, applied in animal husbandry and other directions, to achieve the effect of improving the survival rate of metamorphosis, fast growth, and high practical value

Active Publication Date: 2012-12-26
广西海洋研究所有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

After searching, the research on the broodstock of the phalaenopsis can only be found in our research on the oxytocin cultivation of the broodstock, and there is no disclosure of related technologies in the field of broodstock selection at home and abroad.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Implementation steps:

[0020] 1. Primary selection of parents

[0021] In mid-June, 2007, 150kg of the wild phalaenopsis population was dug and caught on the intertidal tidal flat in the southern coastal area of ​​my country for primary selection. Before selection, put the star worm in a bamboo basket, seal it for 5 minutes to make it turn white due to hypoxia, and then spread it out. The body color of the parent body gradually changes from white to dark, and the parent body with better vitality is selected to observe its germ cells. Gently press and wipe its body surface with your thumb, free spherical eggs can be observed between the squares on the body surface, and the thinner body wall near the end of the tentacles is easier to observe. For comparison, select individuals with larger eggs as females; if observed White milky body fluid, with irregular small sperm cell clusters inside, is a male starworm. Select individuals with darker body color. The following char...

Embodiment 2

[0038] Implementation steps:

[0039] 1. Primary selection of parents

[0040] In the first ten days of July 2008, 100kg of the wild phalaenopsis colonies were excavated from the tidal flats in the coastal intertidal zone of southern my country on the same day and transported by dry transportation for 3 hours for primary selection. Put the square starworm in 2 white foam boxes (40×30×40cm 3 ) in full dress, sealed for 6 minutes, it will turn white due to hypoxia, and then spread out to select the parents with better vitality to observe their germ cells. When observing, gently press and wipe the body surface with the thumb, free spherical eggs can be observed between the squares on the body surface, and the thinner body wall near the end of the tentacles is easier to observe, and the individual with larger eggs is selected as the female parent; If white milky body fluid is observed and there are irregular small sperm cell clusters inside, then it is a male starworm, and indiv...

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Abstract

The invention discloses a breeding method of artificial parents of sipunculus nudus. The sipunculus nudus is low in food chain level and strong in stress resistance, does not migrate in a long distance, and is cultivated without feeding, thereby being suitable for large-area artificial cultivation. By the technical measures of primary selection of parents, natural spawn cultivation, trochophore selection, larva cultivation and selection, cultivation and selection of young sipunculus nudus, parents breeding, and selection of the bred parents, excellent artificial parent selection and volume production of the sipunculus nudus are achieved under the situation of occupying fewer resources; the yield of parent selection is 77%-94%; the mean growth and metamosphsis rate of oosperms produced by the parents is 88%; the abnormal survival rate is 48.3%; the artificial breeding efficiency of the sipunculus nudus is greatly improved, and offspring seeds produced by the selected parents in mudflataquaculture of two years grow faster than wild seeds by 8.3%. According to the invention, the parent selection of the sipunculus nudus is carried out under an artificial control condition; and the breeding method is shorter in time and stable in result, and plays a role in greatly promoting the development of an artificial aquaculture industry of the sipunculus nudus.

Description

technical field [0001] The invention relates to a method for artificial broodstock selection of the gridworm, which is mainly applicable to the breeding of nude gridworms and improved species in the coastal areas of southern China, and belongs to the technical field of breeding and breeding of marine animals in aquaculture. Background technique [0002] Sipunculus nudus, also known as the naked square starworm, commonly known as sandworm, belongs to the phylum Astrozoa and the genus Sipunculus nudus. It is a widely distributed species in the warm water world and is widely distributed in sandy areas with rich runoff in the third surface Or sandy and muddy tidal flats are distributed along the coasts of Fujian, Guangdong, Guangxi, Hainan and Taiwan in my country. This species has a low food chain level, strong stress resistance, no long-distance migration and migration, and no feeding is needed for breeding. It is very suitable for large-scale artificial breeding. Only Guangxi ...

Claims

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Application Information

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IPC IPC(8): A01K67/033
Inventor 邹杰杨家林童万平张琴王志成文雪童潼
Owner 广西海洋研究所有限责任公司
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