Method for feeding experimental meadowsweet aphids indoors
Technical Field
The invention relates to the field of insect breeding, in particular to a method for feeding experimental meadowsweet aphids indoors.
Background
Aphis citricola Van der Goot belonging to Hemiptera of Aphis family, Aphididae, also known as Aphididae, is distributed abroad in Japan, Korea, North America and China, is widely distributed in various large apple production areas in China, and is a foliar pest with serious harm. The main hosts of the meadowsweet comprise various rosaceous fruit trees such as apples, pears, Chinese flowering crabapples and the like, and plants such as meadowsweet, elm leaves and the like. The insect can be generated along with the growth period of the tender tips of the fruit trees, and the piercing and sucking of fruit tree juice causes the downward bending or transverse rolling of leaves, so that the tree vigor is weakened, the photosynthesis is influenced, various diseases are induced at the same time, the growth of the fruit trees and the quality of fruits are seriously influenced, and the serious economic loss is caused to the production of the fruit trees.
The experimental meadow aphids are mostly collected temporarily in the field, and because the pesticide used in the field is unknown and the natural resistance of meadow aphid populations in different areas is greatly different, the experimental effect of the later period is greatly influenced by the meadow aphids collected from different areas. The Aphis citricola population bred by indoor breeding has higher sensitivity to experimental agents, better bioassay effect and real and reliable result.
With the continuous deepening of entomology research and the continuous development of new pest control technologies, a large number of experimental insects with unified physiological standards for experiment supply are the basis for well-done research. Research work on indoor feeding of various insects has become one of the basic techniques for research in entomology and new techniques for pest control. However, at present, the indoor breeding of the meadowsweet mainly depends on the field hosts such as apple seedlings, Chinese flowering apple seedlings and the like. The woody plants are not easy to survive in indoor cultivation, and the economic and management costs are high; the growth and development are extremely slow, and the growth speed of the tender tips can not meet the requirement of expanding propagation of the Aphis citricola completely; and the problems of falling leaves in autumn and winter and the like exist, and the food can not be continuously provided; these drawbacks prevent the indoor preservation and propagation of the aphid population. Therefore, there is a need to find a simpler, less expensive and continuous method for breeding the aphid meadowfoam.
Disclosure of Invention
In order to solve the problems, the invention provides a method for feeding experimental meadowsweet indoors, which can be operated continuously, is simple and convenient to operate and has low cost.
In order to achieve the purpose, the invention adopts the technical scheme that:
a method for feeding experimental meadowsweet aphids indoors is used for feeding experimental meadowsweet aphid populations through cultured angelica keiskei and specifically comprises the following steps:
s1 cutting angelica keiskei koidzumi
Cutting the annual strong branches of the angelica keiskei with length of 10-15cm and inclined cut openings with 2-5 leaves; cutting the cutting in a seedling raising substrate, placing the seedling raising substrate in an environment with the temperature of 20-30 ℃ for cultivation, keeping the humidity at 75%, and illuminating at 16L: 8D;
s2 cultivation of Angelica keiskei
And (3) when the angelica keiskei plants in the step S1 are planted and survived for 60 days and the angelica keiskei plants are 20-25cm high, transferring the plants into a seedling pot, placing the seedling pot in an environment with the temperature of 20-30 ℃ for cultivation, keeping the humidity at 75%, and illuminating at 16L: 8D;
s3, returning the meadow moth collected on the wild fruit tree plant to the room, and transferring the meadow moth to the angelica keiskei plant with the tender shoot length of 3 +/-0.5 cm obtained in the step S1;
s4, when the leaf of the angelica keiskei in the step S3 is full of the aphid of the spiraea littoralis, cutting off the leaf of the angelica keiskei with the aphid, transferring the leaf of the angelica keiskei to the plant of the angelica keiskei obtained in the step S2, and transferring 200 +/-5 heads of the aphid of the spiraea littoralis to each plant.
Preferably, the seedling raising container in the step S1 adopts a plastic flowerpot with a diameter of 10 cm; the nursery pot in the step S2 is a plastic flowerpot with the diameter of 30 cm.
Preferably, the preservation and propagation of the experimental Aphis citricola are carried out in an insect cage with an aluminum alloy frame with the length of 40cm, the width of 40cm, the height of 50cm, a stainless steel gauze with 120 meshes and a glass bottom;
preferably, the environmental conditions for feeding the meadowsweet are that the temperature is 25 +/-2 ℃, the relative humidity is 75 +/-5%, the illumination is 16L: and 8D.
The invention has the following beneficial effects:
according to the method, the Aphis citricola for the experiment is propagated by using the angelica keiskei seedling, so that the risk of collecting the Aphis citricola from the field is reduced, and the real effect of the experiment is greatly improved. The invention adopts the self-cultured angelica keiskei seedling to realize the autonomous culture of the meadowfoam aphid, thereby avoiding the influence and experimental error on some experiments of drug resistance detection and drug resistance screening. In addition, the invention overcomes the problems that woody plants such as apple seedlings, Chinese flowering apple seedlings and the like are not easy to survive in indoor cultivation, extremely slow in growth and development, fallen leaves in autumn and winter and the like, and solves the problem that the meadowsweet aphid population can not be stored and propagated continuously indoors for many years.
In conclusion, the experimental meadowsweet is creatively bred and propagated by the angelica keiskei seedling, the requirements of growth, development and mass propagation of the experimental meadowsweet can be well met, and meanwhile the breeding cost is reduced. In addition, the Aphis citricola is bred and propagated in a bright day leaf seedling culture room, the bright day leaf seedling is cultured in a special seedling culture room, the growth and development of the bright day leaf seedling culture room are not influenced by seasons and the external environment, and sufficient bred host plants are provided for breeding and propagating the Aphis citricola on a large scale.
Detailed Description
In order that the objects and advantages of the invention will be more clearly understood, the invention is further described in detail below with reference to examples. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The Angelica Keiskei (Angelica Keiskei Koidzmi), also called longevity vegetable and crepis japonica, used in the following examples is a perennial herb, is native to japan, and is currently cultivated in many places in China. The experimental Aphis citricola is cultured in an aluminum alloy frame with the length of 40cm, the width of 40cm and the height of 50cm, a 120-mesh stainless steel gauze and an insect-raising cage with a glass bottom.
Examples
A method for feeding experimental meadowsweet indoors comprises the following steps:
s1 cutting angelica keiskei koidzumi
Cutting the annual strong branches of the angelica keiskei with length of 10-15cm and inclined cut openings with 2-5 leaves; cutting the cutting in a seedling raising substrate, placing the seedling raising substrate in an environment with the temperature of 20-30 ℃ for cultivation, keeping the humidity at 75%, and illuminating at 16L: 8D; the adopted seedling raising container adopts a plastic flowerpot with the diameter of 10 cm;
s2 cultivation of Angelica keiskei
And (3) when the angelica keiskei plants in the step S1 are planted and survived for 60 days and the angelica keiskei plants are 20-25cm high, transferring the plants into a seedling pot, placing the seedling pot in an environment with the temperature of 20-30 ℃ for cultivation, keeping the humidity at 75%, and illuminating at 16L: 8D; the adopted seedling raising pot is a plastic flowerpot with the diameter of 30 cm; the number of the seedling raising pots is 3 times that of the seedling raising containers in the step S1, and the design can ensure that the apple yellow aphids after propagation have enough food;
s3, returning the meadow moth collected on the wild fruit tree plant to the room, and transferring the meadow moth to the angelica keiskei plant with the tender shoot length of 3 +/-0.5 cm obtained in the step S1;
s4, when the leaf of the angelica keiskei in the step S3 is full of the aphid of the spiraea ulmaria, cutting off the leaf of the angelica keiskei with the aphid, transferring the leaf of the angelica keiskei to the plant of the angelica keiskei obtained in the step S2, and transferring 200 +/-5 heads of the aphid of the spiraea ulmaria to each plant; the environmental conditions for feeding the meadowfoam aphids are that the temperature is 25 +/-2 ℃, the relative humidity is 75 +/-5%, the illumination is 16L: and 8D.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of the present invention, and these improvements and modifications should also be construed as the protection scope of the present invention.