CN102160529B

CN102160529B - Method for realizing ecological larval culture on rapana venosa

Info

Publication number: CN102160529B
Application number: CN2011101116266A
Authority: CN
Inventors: 于瑞海; 李琪; 王昭萍
Original assignee: Ocean University of China
Current assignee: Ocean University of China
Priority date: 2011-04-18
Filing date: 2011-04-18
Publication date: 2013-03-06
Anticipated expiration: 2031-04-18
Also published as: CN102160529A

Abstract

The invention relates to a method for realizing ecological larval culture on rapana venosa. The method is characterized by comprising the following steps of: firstly selecting a pond which is convenient in water exchange, takes lithoherm and stone bottom as a substrate and is in the size of 2-5Mu; then placing mature rapana venosa with the length of 7-10cm into the pond in the quantity of 100kg per Mu, mating and spawning after the rapana venosa eats ruditapes and mussel for 2-3 days, when enough oocysts are obtained, removing the rapana venosa away, incubating the oocysts for 20-22 days at the water temperature of 20-25 DEG C to obtain planktonic larva, growing the planktonic larva by eating the planktonic larva in the pond, starting to throwing polyethylene corrugated plate adherence or tile under the condition that the water temperature is 22-25 DEG C after 15-16 days, sticking benthic diatom and the planktonic larva onto the polyethylene corrugated plate or tile, transfigurating the planktonic larva of the rapana venosa into young spiral shell after 5-6 days, growing the transfigurated young spiral shell by eating the planktonic larva and benthic diatom on the corrugated plate, wherein the survival rate of the transfigurated young spiral shell on the corrugated plate can reach more than 50%, and feeding small low-value bivalve to the young spiral shell with the length more than or equal to 3mm. By applying the method provided by the invention, the defects that the survival rate is low and the larval yield is low as bait conversion is difficult and water is polluted when carnivorous fish mice are used as feed in indoor artificial larval culture can be overcome, and the larval yield is improved by more than 50% compared with the indoor artificial larval culture. Meanwhile, the production cost is saved as no bait is thrown into the pond, thus the method is environment-friendly, and the produced larval is strong.

Description

The method that the red spirodromy attitude of a kind of arteries and veins is grown seedlings

Technical field

The present invention relates to the method that the red spiral shell of a kind of arteries and veins is grown seedlings, particularly relate to the method that the red spirodromy attitude of a kind of arteries and veins is grown seedlings.

Background technology

The red spiral shell of arteries and veins (Rapana Venosa) claim again red spiral shell, is the peculiar economic shellfish of living in coastal zone along the Huanghai Sea and the Bohai Sea, and foot is loose especially, and Fresh ﹠ Tender in Texture fertile, nutritious, its aquaculture has a extensive future.Because the red spiral shell of arteries and veins has the cultivation fast growth, the culture-cycle is short, and premunition is strong, survival rate is high, the advantage of remarkable in economical benefits, the continuous expansion of its aquaculture scale, therefore, also more and more to the demand of seed, the red spiral shell of China is grown seedlings also at the experimental stage at present.Because red spiral shell is carnivorous shellfish, to be as main take benthic diatom after the abalone attached plate with the difference of abalone fry-rearing, and be as main take carnivorous bait after the red spiral shell attached plate, it is its technical bottleneck that bait after the attached plate transforms, thereby cause the red spiral shell of the arteries and veins output of seedling of growing seedlings extremely low, and do not reach productive level, do not satisfy the cultivation unit to the demand in the seedling, for this technical barrier of the red spiral shell of arteries and veins, developing new seedling raising manners is the key that puts the axe in the helve.

Summary of the invention

The purpose of this invention is to provide the method that the red spirodromy attitude of a kind of arteries and veins is grown seedlings, can overcome the above-mentioned shortcoming of prior art.

The method that the red spirodromy attitude of a kind of arteries and veins is grown seedlings is characterized in that selecting first water exchange convenient, and at the bottom of substrate was cay and stone, size was in the pond of 2-5 mu; Then, the red spiral shell of the arteries and veins of big or small 7-10cm maturation is put into the pond by the amount of every mu of 100kg, young and mussel is as food take clam, the red spiral shell of arteries and veins carries out mate and oviposit after 2-3 days, behind enough egg capsules, remove the red spiral shell of arteries and veins when producing, egg capsule hatched floating larvae through 20-22 days under 20-25 ℃ of water temperature, the plankton that floating larvae is ingested in the pond grows, under 22-25 ℃ of water temperature condition, after 15-16 days, begin to throw in polyethylene corrugated plate adherance or tile, allow benthic diatom and zooplankton adhere at polyethylene corrugated plate or tile, floating larvae settlement and metamorphosis through the 5-6 days red spiral shells of arteries and veins becomes young spiral shell again, abnormal later young spiral shell mainly utilizes the zooplankton and the benthic diatom that are attached on the corrugated plating to be food, survival rate behind the settlement and metamorphosis can reach more than 50%, and the later young spiral shell of 3mm begins the low value bivalve shellfish of throwing something and feeding small-sized.

This invention overcomes because of indoors artificial grows seedlings because bait transforms difficulty, the rotten polluted water of the carnivorous fish of throwing something and feeding, and the survival rate that causes is low, the problem that output of seedling is low, and output of seedling is grown seedlings than indoors artificial and is improved more than 50%.Simultaneously because not needing bait throwing in to save production cost, environmental protection, the seed stalwartness of production.

Embodiment

The method that the red spirodromy attitude of a kind of arteries and veins is grown seedlings is characterized in that selecting first water exchange convenient, and at the bottom of substrate was cay and stone, size was in the pond of 2-5 mu, before using with bleaching powder to the pond disinfection; Then, the red spiral shell of the arteries and veins of big or small 7-10cm maturation is put into the pond by the amount of every mu of 100kg, young and mussel is as food take clam, the red spiral shell of arteries and veins carries out mate and oviposit after 2-3 days, behind enough egg capsules, remove the red spiral shell of arteries and veins when producing, egg capsule hatched floating larvae through 20-22 days under 20-25 ℃ of water temperature, the plankton that floating larvae is ingested in the pond grows, under 22-25 ℃ of water temperature condition, after 15-16 days, begin to throw in polyethylene corrugated plate adherance or tile, allow benthic diatom and zooplankton adhere at polyethylene corrugated plate or tile, floating larvae settlement and metamorphosis through the 5-6 days red spiral shells of arteries and veins becomes young spiral shell again, abnormal later young spiral shell mainly utilizes the zooplankton and the benthic diatom that are attached on the corrugated plating to be food, satisfied young spiral shell after adhering on conversion of food habit to the needs of animal bait, survival rate behind the settlement and metamorphosis can be reached more than 50%, and the later young spiral shell of 3mm begins the low value bivalve shellfish of throwing something and feeding small-sized.

This invention overcomes because of indoors artificial grows seedlings because bait transforms difficulty, the rotten polluted water of the carnivorous fish of throwing something and feeding, and the survival rate that causes is low, the problem that output of seedling is low.Simultaneously because not needing bait throwing in to save production cost, environmental protection, the seed of production is healthy and strong, and the same with natural seedling, disease is few, and survival rate is high, and growth is soon.

Claims

1. method that the red spirodromy attitude of arteries and veins is grown seedlings is characterized in that selecting first the water exchange convenient, and at the bottom of substrate was cay and stone, size was in the pond of 2-5 mu; Then, the red spiral shell of the arteries and veins of big or small 7-10cm maturation is put into the pond by the amount of every mu of 100kg, young and mussel is as food take clam, the red spiral shell of arteries and veins carries out mate and oviposit after 2-3 days, behind enough egg capsules, remove the red spiral shell of arteries and veins when producing, egg capsule hatched floating larvae through 20-22 days under 20-25 ℃ of water temperature, the plankton that floating larvae is ingested in the pond grows, under 22-25 ℃ of water temperature condition, after 15-16 days, begin to throw in polyethylene corrugated plate adherance or tile, allow benthic diatom and zooplankton adhere at polyethylene corrugated plate or tile, floating larvae settlement and metamorphosis through the 5-6 days red spiral shells of arteries and veins becomes young spiral shell again, abnormal later young spiral shell mainly utilizes the zooplankton and the benthic diatom that are attached on corrugated plating or the tile to be food, survival rate behind the settlement and metamorphosis can reach more than 50%, and the later young spiral shell of 3mm begins the low value bivalve shellfish of throwing something and feeding small-sized.