CN1826885A

CN1826885A - Method for prolonging development duration of yellow meal worm

Info

Publication number: CN1826885A
Application number: CN 200510107240
Authority: CN
Inventors: 周文宗; 高洪莉; 张硌; 李洪涛
Original assignee: INSTITUTE OF GEOGRAPHY HENAN ACADEMY OF SCIENCE
Current assignee: INSTITUTE OF GEOGRAPHY HENAN ACADEMY OF SCIENCE
Priority date: 2005-12-02
Filing date: 2005-12-02
Publication date: 2006-09-06
Anticipated expiration: 2025-12-02
Also published as: CN100399888C

Abstract

The invention relates to a method for prolonging the growth period of yellow insect pupal, comprising the following steps: adding wheat bran into fresh water peanut, feeding before pupating of yellow insect, gathering out pupal in time, pupal emerging in pupating box into adult. Comparing with feeding normal foodstuff, the invention is characterized by low cost, simple operation, prolonged growth period for yellow insect pupal by 15-30 days, increased emerging rate, and wide source of raw material. The growth period of yellow insect pupal can be regulated according to ratio between water peanut and wheat bran.

Description

A kind of method that prolongs development duration of yellow meal worm

Technical field

The invention belongs to special animals and culture the field, particularly relate to the yellow mealworm cultural method.

Background technology

Yellow mealworm (Tenebrio molitor L.) has been used as feed with extensively culturing with edible insect, is considered to the third-largest insect industry after silkworm and honeybee, and development prospect is wide.

Be the important stage that yellow mealworm grows pupa time.The mobility of pupa is poor, is very easy to be in larva and the polypide in adult stage injures; The length in pupa time influences emergence of yellow mealworm and the breeding of adult; Rationally dividing exerate pupa, larva and adult is the key technology (Zhou Wenzong, 2003) that improves the yellow mealworm labor productivity.In addition, the worm kind of production in enormous quantities must run into transportation (comprising mailing) problem.Yellow meal worm can not killed each other because mobility is poor, is the important worm attitude of commodity transportation.But under hot conditions, yellow mealworm is short pupa time, adult eclosion rate low (Chen Tong, 2000).Therefore, the development duration of control yellow meal worm is controlled out the worm time to the yellow mealworm breeding production, improves the adult eclosion rate and reduce cost of transportation significant.

The influence that various ecological factors (temperature, humidity, feed, density etc.) grow to yellow mealworm has had many researchs to report (Yang Zhaofen etc., 1999 both at home and abroad; Barnes, 2000; Yang Hongxia etc., 2001; Chai Peichun etc., 2001; Xiao Yinbo etc., 2003), but content concentrates on Yellow meal worm larva and adult aspect basically, and fewer about the research in its pupa time.In the production, the general using low temperature method prolongs pupa time, but power consumption is big, and cost is than higher.At present, the simple and easy technology of utilizing water peanut (AlternantheraPhiloxeroides Griseb) to prolong development duration of yellow meal worm is not appeared in the newspapers.

Summary of the invention

The object of the invention provides a kind of method that prolongs development duration of yellow meal worm, prolongs the development duration of yellow meal worm under the hot conditions, improves the adult eclosion rate.

For achieving the above object, the present invention adopts following technical scheme: the method for this prolongation development duration of yellow meal worm is to mix wheat bran in the fresh water peanut plant, before Yellow meal worm larva is pupated, throw something and feed, in time pick pupa, in the case of pupating, allow pupa development turn into adult.

Water peanut and wheat bran are arranged in pairs or groups by weight 2～10: 1 ratio.

At preceding 10～20 days throw something and feed water peanut and the wheat bran of pupating, relative air humidity is less than 80%.

Pupate to keep dark or low light condition in the case, illumination is less than 500lux, and relative air humidity is less than 80%.

Pupate to put into yellow mealworm worm excrement in 20～30% ratio in the case, it is 1～3 layer that pupa is stacked the number of plies.

The water peanut plant water content is 80～90%.

The present invention utilizes, and weeds-water peanut and wheat bran widely distributed, that harm is serious are arranged in pairs or groups as the feed of yellow mealworm mature larva, compare with the conventional feed of throwing something and feeding at high temperature season, cost of the present invention is low, processing ease, can make development duration of yellow meal worm prolong 15～30 days, the adult eclosion rate obviously improves.The present invention can also regulate and control development duration of yellow meal worm according to the ratio of water peanut and wheat bran, water peanut and wheat bran ratio are high more, and then development duration of yellow meal worm is long more, and raw material sources are extensive, can turn harm into good, for the recycling of water peanut provides new approach.

Embodiment

Water peanut is gathered and handled: gather the water peanut plant from outdoor unpolluted water body, wash and indoorly dry in the air slightly, keep water content 80～90%, folding is that the segment about 10 centimetres is standby.

Feed mixes: according to water peanut: wheat bran weight ratio 2～10: 1 collocation wheat bran requires water peanut, the fresh nothing of wheat bran to go rotten.

Feedstuff feeding: select aging Yellow meal worm larva, at preceding 10～20 days throw something and feed water peanut and the wheat bran of pupating, indoor air relative humidity is less than 80%.

Pick up pupa and grow emergence: in time pick yellow meal worm, the pupa within the week is positioned over the same case of pupating, and prevents to kill each other behind the adult eclosion.The case specification of pupating is not limit, and size is advisable with handled easily, highly greater than 8 centimetres, and inner wall smooth.Pupa is stacked and is no more than 3 layers, and puts into yellow mealworm worm excrement according to 20～30% ratios.The environment peace and quiet that pupa development is sprouted wings keep dark or low light condition (less than 500lux), and relative air humidity is less than 80%.

6～August in 2005 is in the indoor test of carrying out development duration of yellow meal worm.Yellow meal worm larva is available from birds and flowers market, Nanjing, its specification is 0.05 ± 0.01 gram/only, water content 60～62%, at indoor feeding, the raising container is a plastic casing, the plastic casing specification is 8 centimetres of 37 cm x, 25 cm x, and every box is put 0.5 kilogram of Yellow meal worm larva, and feed is wheat bran and Chinese cabbage (Brassica pekinenses (Lour.) Rupr.) leaf.Water peanut picks up from the XuanWu Lake, Nanjing, cleans the back complete stool of drying in the air the slightly yellow mealworm of throwing something and feeding, and its water content is 89%.Indoor illumination condition is natural lighting, and illuminance is less than 450lux, 24～29 ℃ of temperature, relative air humidity 65～80%.

The time of throwing something and feeding of water peanut is that Yellow meal worm larva was pupated preceding 20 days.After pupating, Yellow meal worm larva in time sorts out the measured pupa of matter, be placed in the culture dish (15 centimetres of diameters, 3 centimetres of height), each culture dish is put 6 pupas (time phase difference of pupating was less than 1 hour) in batches, 4 repetitions are set, simultaneously as a comparison with the pupa of throw something and feed Chinese cabbage leaf and wheat bran.Culture dish places in the illumination box, light application time 12L:12D, and illuminance 400～500lux, relative air humidity 40～50%, temperature stabilization is at 25 ℃.Dark condition adopts ventilative little tub overcoat black plastic bag control fully.Pupa turns into adult and observed once in preceding 1～2 day per 1 hour, notes each adult eclosion time.After the off-test, the development duration of each culture dish pupa calculates its mean value according to the pupa number that can normally sprout wings, calculates eclosion rate according to the yellow mealworm adult quantity of normal emergence (emergence adult be deformity except).

The development duration of yellow meal worm sees Table 1.ANOVA showed significant: the water peanut of throwing something and feeding can obviously prolong the development duration of yellow meal worm, under relative air humidity 40～50% and 25 ℃ of conditions of temperature, dish leaf and wheat bran group postpone 495.25 hours (480.97～509.54 hours (95% confidence interval) than throwing something and feeding.Comparatively speaking, the influence of light is less, and the development duration of yellow meal worm is than prolonging 79.25 hours (64.97～93.53 hours) under the illumination condition under complete dark condition.

The development duration of table 1 yellow meal worm

Project	Time/hour
	Time/hour								The water peanut of throwing something and feeding	Throw something and feed dish leaf and wheat bran
	Light dark	727 759	736 762	719 745	741 760	165 325	180 290	189 334	The water peanut of throwing something and feeding	Throw something and feed dish leaf and wheat bran	194 310

Simultaneously, throw something and feed dish leaf and wheat bran group of the adult eclosion rate ratio of the water peanut group of throwing something and feeding obviously improves, and gap is 16.67% (0.51～32.82%) (seeing Table 2).

Table 2 yellow mealworm adult eclosion rate

Project	Eclosion rate/%
	Eclosion rate/%								The water peanut of throwing something and feeding	Throw something and feed dish leaf and wheat bran
	Light dark	66.67 66.67	33.33 33.33	33.33 33.33	66.67 66.67	33.33 33.33	50.00 16.67	50.00 16.67	The water peanut of throwing something and feeding	Throw something and feed dish leaf and wheat bran	50.00 16.67

Claims

1, a kind of method that prolongs development duration of yellow meal worm is characterized in that, mixes wheat bran in the fresh water peanut plant, throws something and feeds before Yellow meal worm larva is pupated, and in time picks pupa, allows pupa development turn into adult in the case of pupating.

2, method according to claim 1 is characterized in that, arrange in pairs or groups according to a certain percentage water peanut and wheat bran, water peanut and wheat bran weight ratio 2～10: 1.

3, method according to claim 1 and 2 is characterized in that, at preceding 10～20 days throw something and feed water peanut and the wheat bran of pupating, relative air humidity is less than 80%.

4, method according to claim 1 and 2 is characterized in that, keeps dark or low light condition in the case of pupating, and illuminance is less than 500lux, and relative air humidity is less than 80%.

5, method according to claim 3 is characterized in that, keeps dark or low light condition in the case of pupating, and illuminance is less than 500lux, and relative air humidity is less than 80%.

6, method according to claim 5 is characterized in that, puts into yellow mealworm worm excrement in 20～30% ratio in the case of pupating, and it is 1～3 layer that pupa is stacked the number of plies.

7, method according to claim 6 is characterized in that, the water peanut plant water content is 80～90%.