A kind of efficient cultivation method of tropical sea cucumber seedlings

Abstract

The invention discloses an efficient cultivation method of tropical sea cucumber seedlings. The technical scheme of the present invention stabilizes the water body by setting a reasonable breeding density, using an air pump to automatically and fully agitate the floating water body, using various methods to improve the efficiency of larval metamorphic attachment, and rationally feeding bait without live algae, and discloses a breeding method for tropical sea cucumbers The beneficial effects obtained by the invention are: the use of the air pump to automatically and fully stir the planktonic water body greatly reduces manpower consumption, and improves the survival rate of planktonic larvae in a simpler and more efficient manner. Under the premise of ensuring high cultivation efficiency, the present invention feeds non-living algae bait, which simplifies operation, reduces energy consumption, effectively prevents the risk of diseases and insect pests brought in by live algae, does not need to replace water bodies in the early stage, and is controllable The breeding efficiency of tropical sea cucumbers has been significantly improved, which provides a solid technical foundation for the realization of large-scale breeding of new varieties of tropical sea cucumbers and the sustainable development and utilization of tropical sea cucumbers.

Description

Technical field: [0001] The invention belongs to the field of aquaculture, in particular to a method for efficiently cultivating tropical sea cucumber seedlings. Background technique: [0002] Sea cucumber (Holothuroidea) is one of the eight treasures in the world and has important dietary value. my country is the most important consumer market. However, with the exception of Apostichopus japonicus, which has been commercially artificially bred and cultured, the other 60 species of edible economic sea cucumbers are all harvested in the wild, and most of them are tropical sea cucumbers. With the development of my country's economy, the demand for tropical sea cucumbers has grown rapidly. From 1996 to 2011, the number of countries supplying tropical sea cucumbers to the Chinese market increased from 35 to 83, and more than 90% of the tropical coastline area has provided tropical sea cucumbers to the Chinese market. Sea cucumbers, and the price of tropical sea cucumbers increas...

AI Technical Summary

Problems solved by technology

[0004] The applicant broke through the cultivation technology of tropical sea cucumbers in the early stage (patent application: a method for artificially cultivating seedlings of sea cucumbers in small water bodies, application number: 201710967254.4), obtained a small amount of seedlings of sea cucumbers, and reported for the first time In the further practice of the development process of tropical sea cucumbers, it is found that the cultivation efficiency of tropical sea cucumber seedlings is still low. The main problems are: 1. During the cultivation period of planktonic life, it is labor-intensive to stir the water body at regular intervals. Larger (ZL201010604454.1 a method for raising sea cucumber seedlings; 201210083064.3 a new breeding method for sea cucumber seedlings), uneven artificial stirring will still cause some seedlings to settle and die, affecting the success rate of larvae cultivation. 2. Planktonic stage and attachment The mortality rate in the metamorphosis stage is relatively high. According to the previous research data of the applicant, the mortality rate from the late development of the big ear to the stage of salping larvae reaches 54.2%, and the mortality rate from the development of salping larvae to the stage of five-tentacle larvae reaches 45.52%. The survival rate (attachment rate) of the late planktonic larval complete metamorphosis attachment is only 22.56% (Spawning, larval development and juvenile growth of the tropical sea cucumber Holothurialeucospilota. Aquaculture, 2018, 48:22–29.)

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