Breeding method of glyptocidaris crenularis offspring seed

Abstract

The invention discloses a breeding method of a glyptocidaris crenularis offspring seed, comprising the following steps of: cultivating chaetoceros in a high temperature season, centrifugally concentrating and then storing at low temperature; beginning to cultivate benthic diatoms 10-20 days before collecting seedling of glyptocidaris crenularis, and selecting an individual with a shell diameter of at least 8 cm, health and no damage and favorable gonadal development at 2-3 ages as an affinity choline; inducing the affinity choline to lay eggs by using a KCl solution stimulus method, artificially inseminating, then hatching the germ cells in ponds according to the density of 3-5 per ml, micro-aerating in the hatching period and timing-stirring, wherein the hatching water temperature is 15-18 DEG C; selecting healthy larvae at the upper layer, breeding according to the density of 0.4-0.6 per ml, feeding the chaetoceros stored at low temperature in the breeding period; placing the grown infantile choline into a seedling-collecting pond internally provided with a corrugated plate where the benthic diatoms grow, and breeding the choline to reach the diameter of 3-5 mm; and peeling the infantile choline from the corrugated plate to be cultivated, and cultivating the infantile choline to grow into a young choline with the diameter of more than 1 cm, at this moment, the young choline can be used for artificial culture as the offspring seed.

Description

Technical field: [0001] The invention relates to a method for cultivating sea urchin seedlings, in particular to a method for cultivating sea hedgehog seedlings that can realize artificial sea hedgehog seedling cultivation and provide farmers with seedlings for large-scale cultivation. Background technique: [0002] Sea urchin (Sea Urchin) is a kind of invertebrate, belonging to Echinodermata, Yuzai subphylum, Echinacea, there are about 850 species in the world, and about 100 species have been discovered in my country so far, but the species with economic value Less, there are no more than 30 economic species that have been well developed and utilized so far. The types of economic sea urchins in my country mainly include horse dung sea urchins, Ezo horse dung sea urchins, photic echinococcus sea urchins, and sea urchins (yellow sea urchins) in the north, and purple sea urchins and white spines three-row sea urchins in the south. The nutritional value of sea urchin is mainly ...

AI Technical Summary

Problems solved by technology

Since the gonad matures from December to the end of April of the next year, and there are no other species of sea urchins to eat during this period, the excessive harvesting has led to the depletion of natural resources, and people have been exploring artificial breeding methods

However, because the breeding season of sea thorns is spring and the planktonic period of larvae is long (generally 25-30 days), and the bait suitable for its development - Chaetoceros is difficult to cultivate on a large scale and for a long time during this period. Restricting the smooth development of sea hedgehog artificial breeding