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Lake mandarin fish scale culturing method

A breeding method and technology of mandarin fish, applied in the field of large-scale culture of mandarin fish in lakes, can solve problems such as habitat damage, overfishing, and decline in economic benefits of lake fisheries

Inactive Publication Date: 2010-06-09
INST OF AQUATIC LIFE ACAD SINICA
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Problems solved by technology

However, in almost all lakes in my country today, due to various reasons such as society and economy, the habitat is damaged or overfished, and the resources of medium and large ferocious fish have been severely damaged. Its natural output is almost close, and the economic benefits of lake fishery have declined

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  • Lake mandarin fish scale culturing method
  • Lake mandarin fish scale culturing method
  • Lake mandarin fish scale culturing method

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Embodiment Construction

[0153] The large-scale cultivation method of lake mandarin fish is as follows:

[0154] 1 Bioenergetics of mandarin fish

[0155] 1.1 Maximum feeding rate and growth rate

[0156] The maximum feeding rate and growth rate of mandarin fish were determined by feeding-growth experiment. The experiment was divided into six temperature groups of 10, 15, 20, 25, 30 and 35°C. The body weight of mandarin fish used in the experiment ranged from 47.22 to 540.15g. For each experimental temperature, 10 mandarin fish were selected, randomly placed in the circulating filter aquarium, one for each case. Then feed with fresh loach to ensure that there is bait for 24 hours. Food intake was measured daily. The experimental time at each temperature was 21 days.

[0157] Maximum feeding rate (C max ) is expressed in grams / tail / day, and the growth rate is expressed in specific growth rate (SGR: % / day) of fish body wet weight.

[0158] SGR = ln ...

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Abstract

The invention discloses a lake mandarin fish scale culturing method, comprising feeding efficiency, defecation rate, excretion rate, standard metabolism, SDA, activity metabolism and fish physical ability value and growth sub-model. The growing conditions and the bait consumption rate of the piscivorous fish after stocking can be predicted by the model; water body is taken as the research site, the time and space distribution characteristics, the biomass, the structure of the main population, the population growth trends of the growth period, the bait base and tropic niche width and competition overlapping of the advantageous small-sized fish in the shallow water reeds lakes are systematically researched, thus establishing the quantitatively acquiring method of the small-sized fish in theshallow water reeds lakes, completing the productivity analysis and measurement of the advantageous population of the small-sized fish in the shallow water reeds lakes, and estimating the sustainableproduction capacity of the lake bait fish.

Description

technical field [0001] The invention belongs to the technical field of freshwater fishery and aquatic products, and more specifically relates to a method for large-scale culture of mandarin fish in lakes. Background technique [0002] Freshwater lakes in my country have always been dominated by released farmed fish (grass carp, silver carp, bighead carp, herring, and bream). These fishes mainly feed on herbivores, zooplankton, and phytoplankton. In order to increase production, high-density stocking often leads to a decline in the quality of the water environment. The latest foreign research shows that stocking ferocious fish not only has no effect on water quality, but has the effect of improving water quality. Many valuable fishes in our country are ferocious fishes, such as mandarin fish, snakehead, catfish, etc. Therefore, developing large-scale stocking of ferocious fishes in our country is an important way to solve the contradiction between the development and mainten...

Claims

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Application Information

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IPC IPC(8): A01K61/00
CPCY02A40/81
Inventor 李钟杰刘家寿张堂林谢松光
Owner INST OF AQUATIC LIFE ACAD SINICA
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