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Method for increasing fry breeding survival rate of Sepiella maindroni de Rochebrune

A technology for the survival rate of cuttlefish and squid, which is applied in the field of raising the survival rate of squid seedlings, can solve the problems of low survival rate, difficulty in ensuring live bait, self-mutilation of cuttlefish, etc., and improve the survival rate , shorten the acclimatization time, prolong the effect of feeding time

Active Publication Date: 2017-12-01
MARINE FISHERIES RES INST OF ZHEJIANG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, artificial breeding and breeding of squid mansoni have been carried out in Fujian and Zhejiang regions of our country, but the survival rate in the cultivation process of squid mansoni seedlings has been low, only about 20%. It is advisable for the squid seedlings to eat live bait. It is difficult to domesticate and eat chilled bait, and it is difficult to ensure sufficient live bait. At the same time, squid has self-mutilation characteristics, so there will be a large number of deaths in nursery farms.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] From October 2015 to June 2016, the following experiments were carried out at the Xishan Test Site of the Zhejiang Provincial Institute of Oceanic and Fisheries Research. Among them, live copepods were cultivated in self-made earthen ponds at the test site of the Zhejiang Provincial Institute of Marine Fisheries; The experimental field of the Institute of Marine Fisheries adopts phototaxis capture after cultivation in an earthen pond. Ice-fresh miscellaneous shrimps were purchased from trawlers in the waters of Xisan Island. The main species were red crayfish and longarm prawns. They were frozen in the cold storage of Xisan Test Site, and they were required to be frozen with water at -18°C.

[0030] A method for improving the survival rate of squid seedling cultivation, comprising the following steps:

[0031] (1) Incubation of fertilized eggs: Select 60kg of fertilized eggs of squid with plump eggs, black and bright color, bathe with 100ppm formaldehyde for 15 minutes ...

Embodiment 2

[0038] The difference between this example and Example 1 is that in order to speed up the growth rate of squid larvae, the temperature of the early stage (before the larvae weigh 50 g) can be properly increased to 24-25°C.

[0039] By the method of the present invention for seedling breeding of squid without needles, the domestication of chilled miscellaneous shrimp can be completed within 5 days, no batch death and self-mutilation occur, and the survival rate of seedlings can be increased from the existing 20% ​​to 50%. A total of 100,000 broodstock of Mansoni's needleless squid were cultivated and 50 million fertilized eggs were produced. The method is easy to use, economical and practical, and effectively improves the survival rate of the squid seedling cultivation.

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PUM

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Abstract

The invention relates to agricultural seawater aquaculture techniques and discloses a method for increasing fry breeding survival rate of Sepiella maindroni de Rochebrune. The method comprises the following steps: (1) fertilized egg incubation; (2) larva feeding; (3) fry-separated culture; (4) fresh and live feedstuff feeding acclimatization; and (5) later-stage staged-temperature-control raising. According to the method disclosed by the invention, in view of physiological characteristics of the Sepiella maindroni de Rochebrune, the acclimatization of chilled miscellaneous shrimps can be achieved in 5 days, the phenomena of batch-size death and self-mutilation do not occur, and the fry breeding survival rate can be increased to 50% from 20%. The method disclosed by the invention has the characteristics of simplicity and convenience in use, economical efficiency and practicability, and the fry breeding survival rate of the Sepiella maindroni de Rochebrune is effectively increased.

Description

technical field [0001] The invention relates to agricultural marine culture technology, in particular to a method for improving the survival rate of squid seedling raising. Background technique [0002] Sepiella maindroni de Rochebrune (Sepiella maindroni de Rochebrune), commonly known as cuttlefish and order fish, belongs to the phylum Mollusca, class Cephalopoda, order Tenbrachia, family Sepia, and the genus Sepia. Mansoni squid is widely distributed in the coastal areas of China, the Far East Sea of ​​Russia, the Seto Inland Sea of ​​Japan, and the southwestern coast of Korea. It was once one of the traditional "four seafood" in the East my country Sea fishing grounds. In the early 1980s, due to spring floods fishing for pregnant squid outside the spawning grounds, summer floods fishing for spawning squids and destroying the spawning grounds, and winter floods for catching juvenile squids and overwintering squids, resulting in resource loss. Severely damaged, the output ...

Claims

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Application Information

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IPC IPC(8): A01K61/00A23K10/22A23K50/80
CPCA01K61/00Y02A40/81
Inventor 史会来张涛平洪领余方平
Owner MARINE FISHERIES RES INST OF ZHEJIANG
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