Method for efficiently temporarily rearing sea-caught portunid in closed fishing seasons

A swimming crab, high-efficiency technology, applied in fish farming, application, climate change adaptation, etc., can solve the problems of adult crab moulting shells are easy to be eaten by the same kind, low overall survival rate, poor economic benefits, etc., to achieve the benefit of disease prevention and control , Improve the breeding environment, improve the effect of water quality

Inactive Publication Date: 2018-11-27
ZHEJIANG OCEAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to overcome the problems of short survival time, easy oviposition, adult crab molting shells are easily eaten by the same kind, low overall survival rate and poor economic benefit in the traditional sea-catching Portunu

Method used

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  • Method for efficiently temporarily rearing sea-caught portunid in closed fishing seasons

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] (1) Temporary pool preparation: refer to figure 1 , install cooling equipment, circulating water system, sweeping equipment and lighting equipment in the holding pool temporarily, lay a gravel layer at the bottom, and control the water depth in the holding pool at 20cm; the lighting equipment includes four incandescent lamps;

[0045] (2) Acquisition of sea crabs: Purchase Portunus crabs caught in crab pots near the temporary breeding site on April 20, select female crabs that have completed moulting or mating, use rubber bands to tie the female crabs' legs, and use running water to clean the crabs. Normal temperature transportation by boat or running water truck;

[0046] (3) Temporary grouping: remove residual limbs and injured individuals, set the red cream female crab as temporary group A, divide temporary group A according to the degree of severed limbs, set the number of severed limbs ≤ 1 as group A1, The number of broken limbs ≥ 2 is group A2; subadult crabs and...

Embodiment 2

[0056] (1) Temporary pool preparation: refer to figure 1 , install refrigeration equipment, circulating water system, cleaning equipment and lighting equipment in the holding tank, lay a layer of gravel at the bottom, and the surface of the gravel is covered with g-C 3 N 4 ; The depth of water in the holding pool is controlled at 25cm; the lighting equipment includes four incandescent lamps;

[0057] (2) Acquisition of sea crabs: on April 23, the portunus caught in crab pots in the sea area near the temporary breeding farm were purchased, and the female crabs that had completed moulting or mating were selected, and the legs of the female crabs were tied with rubber bands. Normal temperature transportation by boat or running water truck;

[0058] (3) Temporary grouping: remove residual limbs and injured individuals, set the red cream female crab as temporary group A, divide temporary group A according to the degree of severed limbs, set the number of severed limbs ≤ 1 as grou...

Embodiment 3

[0068] (1) Temporary pool preparation: refer to figure 1 , install refrigeration equipment, circulating water system, cleaning equipment and lighting equipment in the holding tank, lay a layer of gravel at the bottom, and the surface of the gravel is covered with g-C 3 N 4 ; The depth of water in the holding pool is controlled at 23cm; the lighting equipment includes four incandescent lamps;

[0069] (2) Acquisition of sea crabs: purchase portunus crabs caught in crab pots near the temporary breeding site from April 20 to 23, select female crabs that have completed molting or mating, and use rubber bands to tie the female crabs' legs. Transport at room temperature with running water boats or running water trucks;

[0070] (3) Temporary grouping: remove residual limbs and injured individuals, set the red cream female crab as temporary group A, divide temporary group A according to the degree of severed limbs, set the number of severed limbs ≤ 1 as group A1, The number of bro...

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Abstract

The invention relates to the technical field of aquatic product breeding, in particular to a method for efficiently temporarily rearing sea-caught portunid in closed fishing seasons. The method includes steps of (1), preparing temporary rearing ponds, to be more specific, laying sand, and mounting refrigeration equipment, water circulating equipment and illumination equipment with four incandescent lamps; (2), purchasing the sea-caught portunid caught by crab pots from sea areas near temporary rearing farms in the purchasing time from 20th to 24th of April in every year; (3), carrying out temporary rearing grouping, to be more specific, setting the female portunid with red cream in temporary rearing groups A and setting juvenile portunid and male portunid in temporary rearing groups B; (4), carrying out temporary rearing management. The method has the advantages that environmental factors such as the illumination and the salinity are regulated and controlled, accordingly, the activityfrequencies and the organism metabolic levels of the sea-caught portunid can be lowered, energy consumption can be reduced, the survival time can be prolonged, and the survival rate can be increased;bait is regulated and controlled, so that the spawning rate and the molting rate of the portunid with red cream can be lowered, and the sea-caught portunid temporary rearing efficiency can be integrally improved.

Description

technical field [0001] The invention relates to the technical field of aquatic product cultivation, in particular to a method for efficient temporary cultivation of swimming crabs caught in the sea during the fishing ban period. Background technique [0002] Swimming crab, also known as Portunus trituberculatus, is the most important marine economic crab in my country. It is very popular among consumers because of its delicious meat and rich nutrition. In recent years, the state has attached great importance to the protection and efficient use of marine resources, and the implementation of the fishing ban period (from May to August each year) is an important measure to protect marine resources. [0003] For example, CN103766260B discloses a method for improving the survival rate of Portunus trituberculatus temporarily raising and surviving the winter, and it is characterized in that it comprises the following steps: selecting the best decontamination, removing the attack pow...

Claims

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Application Information

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IPC IPC(8): A01K61/59A01K63/00A01K63/04A01K63/06
CPCA01K61/59A01K63/00A01K63/04A01K63/042A01K63/065Y02A40/81
Inventor 何杰许文军
Owner ZHEJIANG OCEAN UNIV
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