Method for increasing survival rate of pinctada maxima cultured in sea area

Abstract

The invention discloses a method for increasing the survival rate of pinctada maxima cultured in a sea area. The method is characterized in that the physiological functions of larvae are regulated byusing a method for soaking the larvae by sequentially using an anesthetic and fresh water many times in a process that pinctada maxima larvae with shell heights being 2-5mm are placed into the sea area to form larvae with shell heights reaching 30mm, so that the survival rate of the larvae is increased. Due to the adoption of the method for soaking the larvae by using the anesthetic and fresh water many times, the physiological functions of larvae are regulated effectively, the larvae are promoted to reduce stress responses to successfully spend the ''sensitive period'' of growth so as to adapt to a culture environment of the sea area, and therefore, the survival rate of pinctada maxima larvae cultured in the sea area is greatly increased. In addition, materials used in the method are convenient to get, and the method is simple in operation, low in cost and easy to implement.

Description

technical field [0001] The invention relates to the technical field of pearl culture, in particular to a method for improving the survival rate of pearl oyster culture in sea areas. Background technique [0002] Greater Pearl Oyster ( Pinctada maxima Jameson), also known as white butterfly shellfish, is mainly distributed in the coastal waters of Australia in the South Pacific, the coastal waters of Southeast Asian countries in the Western Pacific, and the coastal waters of Hainan Province, Leizhou Peninsula, and Xisha Islands. Pearl oyster is currently the largest marine pearl oyster. It can produce large pearls with strong luster, thick nacre layer and beautiful color. The diameter of pearls is generally more than 10mm, and the larger ones even exceed 20mm. Because the large and high-quality pearls it produces are very rare in the world and the price is extremely expensive. After processing, each pearl can be worth 3,000 to 4,000 US dollars, and each high-quality pearl ca...

AI Technical Summary

Problems solved by technology

There are many scientific research institutes in our country, trying to cultivate pinnata saplings (also called juveniles) through artificial propagation to grow mother oysters for cultivating pearls, but a large number of bred seedlings die after being cultured in the sea to 20 mm (high mortality period) Mostly appear in juvenile shellfish stage), the survival rate is low (usually the survival rate is less than 1%), and it is impossible to realize industrial scale breeding