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Scientific releasing method of tachypleus tridentatus larvae

A seedling and scientific technology, applied in the field of marine rare species multiplication and release, can solve the problems of unreasonable and unscientific artificial release process, reduce the risk of being predated, improve the survival rate, and improve the effect of release

Active Publication Date: 2018-12-21
QINZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the deficiencies of existing multiplication and release methods, the purpose of the present invention is to provide a scientific release method for Chinese horseshoe crab seedlings, which can meet the survival and growth needs of the seedlings in the natural environment, and overcome the unreasonable and unscientific limitations of the current artificial release process. problems, thereby improving the survival rate of released seedlings and ensuring the effect of releasing

Method used

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  • Scientific releasing method of tachypleus tridentatus larvae

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Embodiment 1

[0032] 1. Releasing site selection: Releasing in the intertidal zone (4) mangrove (3) periphery of the existing Chinese horseshoe crab nursery;

[0033] 2. The source and specifications of the released seedlings: in spring and summer, transport the broodstock that spawned ashore to the neighboring farms to induce spawning, and propagate the seedlings in an artificial environment from 11 months to 7 years. 38±2 mm, release the seed to the same tidal flat with the same source as the parent horseshoe crab;

[0034] 3. Health inspection of released seedlings: take 1-5% of the total released number of 7-year-old seedlings for health inspection to ensure that the health level of released horseshoe crab seedlings is good: cell survival rate is 70-82%, spherical granular cell ratio is 60-87%;

[0035] 4. Release timing: release seedlings to the intertidal zone during low tide from May to July;

[0036] 5. Transport of released seedlings: 10-15 7-year-old seedlings per liter of seawater and 5-...

Embodiment 2

[0039] 1. Releasing site selection: Monitoring the habitat conditions in the damaged Chinese horseshoe crab nursery to ensure that it is consistent with the existing nursery conditions: the sediment is sandy and muddy, with a particle diameter of 0.22-0.55 mm and total organic content 3-23%, interstitial water content 16-23%, surface water salinity 20-34‰, pH 6.4-8.0, dissolved oxygen higher than 6 micrograms per liter, there are small polychaetes, bivalves and crustaceans, in the tide (4) Set up fixed nets or other anti-predation facilities, mesh 7-10, and seine tidal flat area of ​​more than 2000 square meters to provide sufficient tidal flat area for seedlings to feed;

[0040] 2. The source and specifications of released seedlings: the parent horseshoe crabs are purchased around the sea area where the release site is selected, transported to the neighboring farms for inducing spawning, and the seedlings are propagated in an artificial environment for 1-2 months to 1st instar s...

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Abstract

The invention discloses a scientific releasing method of tachypleus tridentatus larvae. The scientific releasing method of the tachypleus tridentatus larvae includes the following steps of 1, selecting a releasing site; 2, selecting the source and specification of the tachypleus tridentatus larvae; 3, conducting health examination on the tachypleus tridentatus larvae, wherein 1-5% of all the released 7-day-old tachypleus tridentatus larvae are extracted to be subjected to health examination, it is ensured that the amoebocyte survival rate of the tachypleus tridentatus larvae and the proportionof globoid granular cells of the tachypleus tridentatus larvae are at good and healthy levels, the amoebocyte survival rate of the tachypleus tridentatus larvae is 70-82%, and the proportion of the globoid granular cells of the tachypleus tridentatus larvae is 60-87%; 4, selecting time for releasing, wherein an ebb tide period is selected for releasing the tachypleus tridentatus larvae to a intertidal zone at sunny or cloudy days, the temperature of water is higher than 20 DEG C, and a canicular fishing ban period is combined to release the tachypleus tridentatus larvae; 5, transporting the tachypleus tridentatus larvae to be released; 6, evaluating releasing effects. The scientific releasing method of the tachypleus tridentatus larvae accords with the biological features of the tachypleus tridentatus larvae, operation is scientific and reasonable, the population quantity of tachypleus tridentatus is effectively recovered, and therefore high-value tachypleus tridentatus can have greater ecological, economic and social benefits.

Description

Technical field [0001] The invention relates to the technical field of proliferation and release of rare marine species, in particular to a scientific release method of Chinese horseshoe crab seedlings. Background technique [0002] Chinese horseshoe crab (Tachypleus tridentatus) is also known as Oriental horseshoe crab, Chinese horseshoe crab, trispinum limulus, and husband and wife fish. It belongs to the Arthropod, Chelicatophylum, Limbodae, Limulus, Limulus. The existing limulus in the world can be divided into four subfamilies and three genera. They are the only living organisms of the Limbod class on the earth. Its earliest fossils can be traced back to the Cambrian period about 485 million years ago. The existing horseshoe crab has experienced five extinctions of biological clusters and has survived so far, and there has not been a huge change in morphology and structure. It is a rare marine "living fossil". Chinese horseshoe crab is an indicator species of the offshore e...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01K61/59
CPCA01K61/59Y02A40/81
Inventor 关杰耀颉晓勇周海超廖永岩符益健黄淑燕况洋吴宙陈俏邓萌
Owner QINZHOU UNIV
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