CN113678790B - Method for optimizing Babylonia wasp population structure in host conversion mode - Google Patents

Method for optimizing Babylonia wasp population structure in host conversion mode Download PDF

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CN113678790B
CN113678790B CN202110875028.XA CN202110875028A CN113678790B CN 113678790 B CN113678790 B CN 113678790B CN 202110875028 A CN202110875028 A CN 202110875028A CN 113678790 B CN113678790 B CN 113678790B
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张娟
黄�俊
唐娅媛
李明江
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Zhejiang Academy of Agricultural Sciences
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Abstract

The invention relates to the technical field of indoor breeding of insects, in particular to a method for optimizing a small-sized bombus swarm structure in a host conversion mode. The host switching cycle specifically comprises the following steps: s1, selecting a bombus batrachius PSS-1 which takes the Chinese hibiscus mealybugs as hosts to breed a plurality of generations; s2, providing the transformed host lycoris radiata mealybugs for the bombus sp PSS-1, and obtaining the bombus sp PSI-1 after the first host transformation after the progeny parasitic wasps eclosion; and S3, providing the Hippocampus solonensis PSS-1 for parasitism of the Brachypoda rupestris after host conversion to obtain the Brachypoda rupestris PSS-2 after the second host conversion. Namely 2 times of the Liriospirus fuscipes parasitized by the Beauveria bambusicola (generating PSS-1 and PSS-2) and 1 time of the Lycoris radiata (generating PSI-1), in order to complete one host conversion cycle. And continuing host switching for the second period (generating PSS-3, PSI-2 and PSS-4) and the third period (generating PSS-5, PSI-3 and PSS-6), so that the population optimization of the Brachidaceae jumping wasps can be realized. The method can obviously improve the parasitic rate of the female bee of the Brazilian jumping bee, prolong the service life of the female bee and the male bee, increase the proportion of offspring female bees in the population and greatly optimize the population structure of the Brazilian jumping bee.

Description

Method for optimizing swarm structure of Brachionus baeri in host conversion mode
Technical Field
The invention relates to the technical field of indoor breeding of insects, in particular to a method for optimizing a small-sized bombus swarm structure in a host conversion mode.
Background
The Phenacoccus solenopsis and Lycoris radiatus solani belong to the genus of Ericerus, and their host spectra are substantially similar. The small communications bees Aenasius bambawalei belongs to the family of Hymenoptera, is an important accompanying natural enemy of the Lecanicillium involving Hippocampus, is also an obligate parasitic wasp as an advantageous species, has a parasitic rate of 50-62% in the field, and has good biological control application prospects. At present, a great deal of research on the biological control of the Hibiscus rosa sinensis by using the Aenasius bambawalei in Banshi at home and abroad is carried out, and no parasitic natural enemy of the Lycoris lycoris sinensis is reported. Meanwhile, the expanding utilization capacity and host adaptability mechanism of the bombus hopping wasp on other new host resources except the bearded mealybugs are rarely reported. We find that after the small bombus batrachii is adapted for a short time, the lycoris radiate mealybugs can be parasitic successfully by indoor feeding. However, the influence of the host of the small bane on the parasitic characteristics and the population structure after the transformation is not clear.
Disclosure of Invention
In order to solve the technical problems, the invention provides a method for optimizing the swarm structure of the bombus in a host conversion mode, which can obviously improve the parasitic rate of the female bees of the bombus in a bazaar, prolong the service life of the female bees and the male bees, increase the proportion of offspring female bees in the swarm, greatly optimize the swarm structure of the bombus in a bazaar, contribute to fully developing and utilizing the bombus in a bazaar, and provide a new idea for the prevention and control of invasive pests which accompany with a moving natural enemy in a new invaded place.
The technical scheme of the invention is as follows:
a method for optimizing a Babylonia wasp population structure in a host conversion mode specifically comprises the following steps: s1, selecting a Tenebrio bayana PSS which takes the Hibiscus solenopsis as a host and is bred for multiple generations; s2, providing the transformed host lycoris radiata mealybugs for the above Babylonia wasps PSS, and obtaining the Babylonia wasps PSI after the first host transformation after progeny parasitic wasps eclosion; and S3, providing the Hibiscus soloniella for the PSI after host conversion for parasitism to obtain the PSS-2 after the second host conversion. Namely 2 times of the Liriospirus fuscipes parasitized by the Beauveria bambusicola (generating PSS-1 and PSS-2) and 1 time of the Lycoris radiata (generating PSI-1), in order to complete one host conversion cycle. And continuing host switching for the second period (generating PSS-3, PSI-2 and PSS-4) and the third period (generating PSS-5, PSI-3 and PSS-6), so that the population optimization of the Brachidaceae league can be realized. Preferably, the bombus batrachius PSS breeding for multiple generations by taking the mealybugs of the hibiscus as hosts is bred indoors for at least 30 generations.
Preferably, the indoor breeding conditions are set to be 26-28 ℃, 70-80% of relative humidity and L16: D8 of photoperiod.
Preferably, the insect status of the transformed host is female adult, and the ratio of the bee: the scale of scale is 2:15.
preferably, the state of the mealybugs of the Chinese hibiscus provided by the small bannshima PSI after host conversion is female imago, and the number of the wasps: the scale of the scale is 2:20.
compared with the prior art, the invention has the following advantages:
the invention adopts the young osbeckia banseri bred for more than 30 generations by taking the Chinese hibiscus mealybugs as hosts as an initial parasitic bee source. Can ensure high parasitized rate of the transformed hosts, the size of the bee individuals and the life of offspring female bees.
The invention adopts the lycoris radiate mealybugs as the transformation hosts of the small bane-Shih skipper, which is beneficial to increasing the parasitizing rate of the mealybugs, is also beneficial to expanding the host spectrum of the natural enemy and controlling the foreign invasive species lacking the natural enemy resources.
The method provides the Fusang mealybugs host for the Brachypodium semiaquilegii after host conversion, is favorable for improving the parasitic rate of the female bee of the Brachypodium semiaquilegii, prolonging the service life of the female bee and the male bee and increasing the proportion of offspring female bees in the population.
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FIG. 1 is a schematic diagram of the embodiment.
Detailed Description
The invention provides a method for optimizing a swarm structure of a Bangian jumping wasp in a host conversion mode, wherein a host conversion period specifically comprises the following steps: s1, selecting a Tenebrio bayana PSS which takes the Hippocampus daucus as a host and feeds the Tenebrio bayana for multiple generations; s2, providing the host Lycoris radiata Lecanier PSS for transformation for the Brachypoda baeri PSS, and obtaining the Brachypoda baeri PSI after the first host transformation after the emergence of the offspring parasitic wasps; and S3, providing the Hibiscus soloniella for the PSI after host conversion for parasitism to obtain the PSS-2 after the second host conversion. Namely 2 times of the Chinese parasitism of the small bans-bang, namely the Chinese parasitism of the cotton bollworm with the mulberry (generating PSS-1 and PSS-2), and 1 time of the Chinese lycoris, namely the Chinese parasitism of the small bans-bang, namely the Chinese parasitism of the cotton bollworm with the mulberry (generating PSS-1) and the Chinese parasitism of the cotton bollworm with the lycoris (generating PSS-1), in order to complete one host conversion period. And continuing host switching for the second period (generating PSS-3, PSI-2 and PSS-4) and the third period (generating PSS-5, PSI-3 and PSS-6), so that the population optimization of the Brachidaceae league can be realized.
Example 1 Effect of different host transformation methods on fitness of Bay jumping bees
Under laboratory conditions, respectively breeding Hibiscus solenopsis and Lycoris radiata Leyss with potato Solanum tubersum pot seedlings (20-25 cm) and potato tubers. And after the two mealybugs develop into female adults, the two mealybugs are reserved. Selecting and breeding more than 30 generations of primarily emerged and fully mated Babylonia wasp 2 pairs (2 female and male wasps respectively) indoors by taking the Chinese red solenopsis as hosts, breeding for 48 hours by respectively using a T1 host sequence (Chinese red solenopsis, lycoris radiate Chinese red-cotton white) and a T2 host sequence (lycoris radiate Chinese red-cotton white-black-garlic spread white red-cotton white) and removing parasitic wasps. Wherein, the small bombesi batrachii, the wasps of the Chinese red mulberry mealybugs and the lycoris radiate mealybugs: the scale of scale is 2:20 and 2:15. after the parasitic wasps emerge, obtaining the Brazilian jumping wasps in the host sequence of T1 and T2 respectively, and taking the wasps: the scale of scale is 1:30 percent of the total amount of the wild white beetles and the white beetles of the hibiscus rosa are inoculated into the wild white beetles and the white beetles, and the parasitizing rate, the eclosion rate, the proportion of filial generations and the service lives of the hermaphrodite bees of the hibiscus rosa are observed and counted day by day. The above treatments were repeated 5 times, and the feathered bombus spp on the host of the Lecanicillium solenopsis was used as a control. Indoor breeding conditions are set to be 26-28 ℃, relative humidity is 70-80%, and photoperiod is L16: D8.
TABLE 1 influence of different host transformation modes on fitness of Bay jumping bees
T1 T2 CK
Parasitic ratio (%) 64.67±2.35A 30.00±1.26C 56.67±2.25B
Eclosion Rate (%) 92.88±3.44A 88.83±2.35A 91.85±3.20A
Longevity of female bee (d) 29.60±2.36A 8.60±1.14C 27.8±1.24B
Drone life (d) 13.80±0.15A 5.60±1.03C 7.00±1.56B
Proportion of offspring to female (%) 76.70±5.31A 54.68±3.24B 45.14±5.37C
Note: capital letters indicate significant differences between different treatments.
As can be seen from table 1, the T1 host transformation mode (hibiscus soloniella-lycoris soloniella-hibiscus soloniella) can significantly improve the parasitic rate of the bang-skipper wasp, prolong the life of the female wasp and the male peak offspring, and increase the female proportion of the offspring; t2 host transformation mode (lycoris radiata-lycoris radiata) can increase offspring female ratio, and the parasitism rate and the life of female bees and male peaks are lower (shorter) than those of the control; under the two host conversion modes, the emergence rate of the bombus spp is not different from that of the control. Therefore, the T1 host transformation mode (the bearded mealybugs-the lycoris radiata-the bearded mealybugs) is more beneficial to the optimization of the swarm of the Brachypodium semifasciatus.
Example 2 Effect of different host switching cycles on the parasitic rate and population hermaphroditism ratio of the Brachypoda bambusae
Selecting T1 host sequence (Hispidae solenopsis-lycoris solenopsis-Hispidae) to breed Beauveria sp population with 1, 2, 3, 4 and 5 periods, and breeding the Beauveria sp population with the ratio of bee: the scale of scale is 1:30, providing the female adult of the bearded mealybug of the hibiscus sinensis as a host. And observing and counting the total number of the Chinese red sedge mealybugs parasitized by the Brachypodium anisopliae of each generation and the proportion of offspring female bees day by day. The above treatments were repeated 3 times, and the feathered bombus spp on the host of the Lecanicillium solenopsis was used as a control. Indoor breeding conditions are set to be 26-28 ℃, relative humidity is 70-80%, and photoperiod is L16: D8.
Table 2 influence of different host conversion algebra on parasitic rate and population sex ratio of bombus spp
Figure BDA0003189808390000031
Figure BDA0003189808390000041
Note: capital letters indicate significant differences between generations.
As can be seen from Table 2, the parasitic rate and the offspring-female ratio of the Brazilian jumping bees can be remarkably improved by switching different cycles in a T1 host switching mode. Wherein the parasitic ratio and the proportion of offspring females both increase gradually with increasing switching cycles and reach a maximum at cycle 3, and both values then decrease continuously and approach the level at switching cycle 1.
The implementation schematic is shown in fig. 1.

Claims (3)

1. A method for optimizing a Babylonia wasp population structure in a host conversion mode is characterized by comprising the following steps: the host switching cycle specifically comprises the following steps: s1, selecting and breeding a plurality of generations of Beehive beetle PSS-1 by taking the Hippoicerus soloniella as a host, and selecting bees of the Beehive beetles and the Hippoicerus soloniella: the scale of the scale is 2:20; s2, providing the hosts of the above Beauveria bambusicola PSS-1 with the bees of the Beauveria bambusicola and the Lycoris radiata Leonia: the scale of scale is 2:15; after the offspring parasitic wasps emerge, obtaining PSI-1 of the Bangian jumping wasp after the first host conversion; s3, providing the cotton bollworm for the small bane-Shi PSI-1 after host conversion for parasitizing to obtain the small bane-Shi PSS-2 after the second host conversion, namely parasitizing the small bane-Shi for 2 times to generate PSS-1 and PSS-2 and 1 time to generate PSI-1 by the cotton bollworm of lycoris, and completing a host conversion period; continuing host switching for a second period to generate PSS-3, PSI-2 and PSS-4 and PSS-5, PSI-3 and PSS-6 in a third period, so as to realize the population optimization of the Brachypodium banseyi, wherein the raising of the Brachypodium shikoyi PSS-1 for a plurality of generations by taking the Lecanicillium solenopsis as the host means that the Brachypodium banseyi is raised indoors for at least 30 generations; indoor breeding conditions are set to be 26-28 ℃, relative humidity is 70-80%, and photoperiod is L16: D8.
2. The method for optimizing the structure of a population of Brachypodium bambusicola by host transformation according to claim 1, wherein the insect status of the transformed hosts is female adults.
3. The method for optimizing the population structure of the Potentilla anserina through the host transformation method according to claim 1, wherein the Coccinia fusca PSI-1 provides the Potentilla anserina in the form of female adults, and the bee: the scale of the scale is 1:30.
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