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1.
副珠蜡蚧阔柄跳小蜂Metaphycus parasaissetiae Zhang and Huang是新发现的橡副珠蜡蚧成虫内寄生蜂,自然寄生率约为15.68%。实验室内对其形态、发育、繁殖、存活、行为等生物学特性进行了观察。结果表明,在26±1℃,RH70%±5%条件下,每头寄主出蜂4.5头,雌性比例80.6%;雌蜂生殖系统解剖发现,未交配雌蜂卵巢内的卵经1d可发育成熟,但同一雌蜂卵巢内卵粒之间发育程度不一致;该蜂完成一个世代需15～19d,但幼虫蜕皮现象不明显;该蜂可营孤雌产雄生殖,孤雌羽化后24h内即可产卵,平均每头寄主可出雄蜂5.3头;雌蜂交配后24h内即可产卵,产卵期1～17d;1头已交配雌蜂可寄生1～10头寄主,一生产卵3～76粒,每日平均产卵量为8.2±4.0粒;雌、雄成蜂平均寿命均不超过3d,补充蜂蜜水可延长雌、雄成蜂的寿命。  相似文献   

2.
利用光学显微镜和透射电镜观察红颈常室茧蜂Peristenus spretus Chen et van Achterberg雌性生殖系统结构、卵巢发育和卵子发生、卵子超微结构,并对15℃和23℃饲养条件下不同日龄的雌蜂卵巢管长度、卵巢管内卵室大小与成熟度进行了比较,揭示了该茧蜂雌性生殖系统结构与特征。结果表明：1）红颈常室茧蜂生殖系统结构主要包括一对卵巢、2条输卵管、中输卵管等;2）雌成虫在羽化前期（1～3 d）卵巢内的成熟卵粒较少,卵巢管内含有大量的卵原细胞,卵子内充满了大量的脂滴,中后期（5～11 d）随着脂肪体的降解吸收,卵子内逐渐新生一些线粒体、高尔基体等细胞器,其内存在滋养细胞、卵母细胞,并且滋养细胞无细胞膜存在。3）同一温度不同日龄红颈常室茧蜂卵粒数、成熟卵子数均差异显著,23℃下红颈常室茧蜂每条卵巢管内的日均卵子数20.70粒,显著高于15℃的日均卵子数18.65粒。  相似文献   

3.
The cytochrome P-450-dependent microsomal and mitochondrial ecdysone 20-monooxygenase systems convert ecdysone into 20-hydroxyecdysone. The microsomal fraction of fat bodies of zero h wandering stage fleshfly larvae (Neobellieria bullata; Diptera: Sarcophagidae) has a high ecdysone 20- monooxygenase activity. The effects of cytochrome P-450 inhibitors were investigated in vitro on microsomal ecdysone 20-monooxygenase. Metyrapone, fenarimol and certain imidazole derivatives (KK-42, KK-110, KK-135 and PIM) are strong inhibitors. The IC50 value of KK-110, which is the strongest inhibitor, is 2 × 10?7 M. A triazolyl and two cyclopropylamine derivatives have low activity. The activities of different NADPH-cytochrome c (P-450) reductase inhibitors were also assessed; diquat dibromide is a moderate inhibitor of microsomal ecdysone 20-monooxygenase, while paraquat dichloride has no activity. In-vivo experiments with cytochrome P-450 inducers and inhibitors gave the following results: (a) fenarimol, FI-121, precocene-2 caused “permanent” first-instar larvae; (b) barbital, phenobarbital and their sodium salts caused significant delay in larval development; (c) PIM, PTM, metyrapone, KK-42, KK-135, J-2710, RH 5849 and colchicine caused moulting disturbances; (d) J-2710, PIM, PTM, KK-42, KK-135, RH 5849 and colchicine caused lethal spiracle and mandible malformation; (e) KK-110, fenarimol, barbital and phenobarbital caused precocious pupariation.  相似文献   

4.
Migratory locusts represent the most important crop pests in Africa and Asia. Because environmental damages are associated with the use of synthetic insecticides in locust and grasshopper control, new environmentally acceptable approaches are becoming increasingly important. The effects of gibberellic acid (GA3), a plant growth regulator, was investigated by topical application and ingestion on the reproductive physiology and ecdysteroids production of the migratory locust Locusta migratoria at concentrations of 125, 625, 3125, 4125, 5125 and 6125 μg/mL. The treatment applied to adult females during the pre-ovipositional phase provokes a significant adverse influence on their reproductive potential. Indeed, GA3 significantly reduced both fecundity and fertility. Gibberellic acid also caused disturbances in the incorporation of the hemolymph metabolites (proteins, carbohydrates and lipids) in the oocyte resulting in a significant reduction in their concentrations in the ovaries. Ecdysteroid production was measured by an enzymo-immunoassay. GA3, administered by ingestion to the adult females, significantly reduced the ecdysteroid titers in ovaries and freshly laid eggs.  相似文献   

5.
The ecdysteroid titers of insect growth regulator (IGR)-treated and untreated large milkweed bug nymphs, Oncopeltus fasciatus (Dallas) (Heteroptera: Lygaeidae), were determined by radioimmunoassay. All of the IGRs tested affected the ecdysteroid levels and the ecdysis of both sexes in some way. AI3-63604, a juvenile hormone mimic, accelerated ecdysteroid production and its subsequent decline, shortened the stadium, and induced a supernumerary nymphal molt. Diflubenzuron had no effect on the onset of ecdysteroid production but slightly retarded the decline in ecdysteroid titers before adult ecdysis, and the ecdysis was incomplete. Ecdysteroid production was delayed and erratic in nymphs treated with azadirachtin and AI3-63967, but the effect on ecdysis was different for each compound. Azadirachtin caused incomplete adult ecdysis, whereas AI3-63967 completely prevented any attempts at ecdysis. The large peak of exdysteroid activity associated with apolysis was absent in starved insects, and they made no attempt to ecdyse.  相似文献   

6.
Diflubenzuron, topically applied (0·5 μg insect?-1) to Cydia pomonella (L.) at pupal ecdysis disturbed growth and development of oocytes. It delayed the adult ecdysis and caused a decrease in both thickness of the follicular epithelium and the size of the basal oocyte during the pupal development. On the other hand, the size of basal oocytes, the protein content per ovary and the number of oocytes per ovary recorded in newly emerged adults were significantly reduced after diflubenzuron treatment. These results, together with observations in several other species, indicate that the reduction in fecundity and egg viability is probably due to interference of diflubenzuron with the vitellogenesis process.  相似文献   

7.
Pyriproxyfen, an analog of the juvenile hormone (JH) in insects, has been evaluated in vivo and in vitro on an important stored product pest, the mealworm Tenebrio molitor. On newly ecdysed pupae, this insect growth regulator (IGR) was applied topically (at 0.10 and 0.20 μg/insect). Enzyme immunoassay measurements showed a decrease of the ecdysteroid titer in the hemolymph of treated specimens. In addition, the treatment induced an increase of the protein concentration in the hemolymph, however, there was no significant effect on the protein band pattern. Using in vitro pupal integument explant cultures, pyriproxyfen (at 1 and 10 μM in the medium) caused a significant inhibition of ecdysteroid amounts and of the thickness of new cuticle secreted. These new results are discussed in relation to the physiology of this IGR with a JH action.  相似文献   

8.
草地贪夜蛾Spodoptera frugiperda（Smith）是一种远距离迁飞害虫,其成虫生存期间会取食,但是取食获得的水和糖在其交配繁殖中的作用目前并不清楚。本研究利用卵巢解剖法和行为观察法,详细研究了成虫喂食对草地贪夜蛾存活、卵巢发育和繁殖的影响。发现饥饿不喂食草地贪夜蛾成蛾存活时间短（约3 d）,卵巢发育不成熟（低于2级）、交配率低（22.00%）、几乎不产卵（5.8枚）,卵几乎不孵化（3.0%）。喂食纯水或蜂蜜水成蛾存活时间长（6~8 d）,雌蛾卵巢发育成熟（3.4~3.6级）、交配率高（61.1%~66.7%）、产卵量大（436~1281枚）、卵孵化率高（大于95%）,均显著大于不喂食成蛾。喂食对交配雌蛾的交配次数（1.1~1.7次）和未发育成熟雌蛾的交配率（18.2%~22.9%）无显著影响。喂食蜂蜜水雌蛾的存活时间（8.06 d）和产卵量（1281枚）显著大于喂食纯水（分别为6.57d和436枚）,而雄蛾存活时间、雌蛾卵巢发育等级、交配率、卵孵化率在喂食纯水和蜂蜜水之间无显著差异。本研究结果认为水是草地贪夜蛾成蛾存活和繁殖必须补充的物质,糖仅能增加雌蛾的产卵量。仅仅利用花香气味进行草地贪夜蛾的监测和防控,效果可能不理想。这些结果为草地贪夜蛾的精准监测和有效防控提供理论依据。  相似文献   

9.
Seventeen 1,5-disubstituted imidazoles possessing a variety of substituents were tested on Bombyx mori and Oncopeltus fasciatus. All compounds induced precocious metamorphosis from 4th-instar larvae of B. mori. Of the compounds tested, 1-benzyl-5-[(E)-2,6-dimethyl-1,5-heptadienyl]imidazole (KK-42) was the most active against B. mori larvae. However, none of the compounds induced precocious metamorphosis in O. fasciatus nymphs, although several showed delayed toxicity. Treated nymphs died during or immediately after the moult. A series of 1-isobutylimidazoles exhibited high activity against O. fasciatus, whereas KK-42 was inactive even at high doses. There was no apparent correlation between the ability of imidazoles to cause precocious metamorphosis in B. mori and the delayed toxicity for O. fasciatus.  相似文献   

10.
The ovicidal action of four insecticides and three insect growth regulators, on eggs of various ages of the susceptible (S) strain of Spodoptera littoralis, was investigated. The results revealed that diflubenzuron was the most toxic compound tested on 0-1-day-old eggs, followed by triprene and then methoprene; chlorpyrifos came next in its toxicity, followed by cypermethrin then fenvalerate; methomyl was the least effective. With the progress of embryonic development, 1-2-day-old eggs showed slight tolerance to the action of the pesticides and juvenoids, but apparently resisted the action of diflubenzuron. Eggs 2-3 days old showed increased tolerance to the insecticides and diflubenzuron and, to a lesser extent, to the action of the two juvenoids. A total of 21 insecticide or insect growth regulator-insecticide mixtures, based on their toxicity equivalents (LD25 + LD25), were applied jointly on 0-1-day-old eggs of the S strain. The mixtures which produced high synergism on this stage could be arranged, according to their decreasing order of potentiation, as follows: fenvalerate/diflubenzuron, cypermethrin/triprene, methomyl/methoprene, cypermethrin/methoprene, fenvalerate/ methoprene, cypermethrin/methomyl, cypermethrin/diflubenzuron, fenvalerate/triprene, diflubenzuron/methoprene and methomyl/triprene. The mixtures that produced synergistic effects on 0-1-day-old eggs were also tested against the 1-2 and 2-3-day-oldeggs of the S strain. Theresults indicated that themixtures fenvalerate/diflubenzuron, and cypermethrin with either triprene or diflubenzuron, when tested on 1-2-day-old eggs, produced levels of synergism nearly similar to those achieved on newly deposited eggs. On the other hand, the mixtures cypermethrin/methomyl, and fenvalerate with methoprene or triprene, showed comparatively lower levels of synergism. However, the synergistic action of the mixture cypermethrin/methoprene, previously detected on newly deposited eggs, became an additive effect on 1-2-day-old eggs. Only the mixtures fenvalerate/diflubenzuron, cypermethrin/triprene and fenvalerate/methoprene showed synergism on 2-3-day-old eggs. The mixtures which showed synergistic effects on 0-1-day-old eggs of the S strain were further tested on eggs of various ages of the diflubenzuron-resistant (Rd) strain. As regards 0-1-day-old eggs, only the combinations cypermethrin/triprene, methomyl/methoprene and fenvalerate/methoprene produced additive effects. The mixture cypermethrin/diflubenzuron was still synergistic against newly deposited eggs of the Rd strain, in a manner similar to that indicated with the S strain. Apparent levels of antagonism were shown to the other insecticide-juvenoid mixtures as well as to the diflubenzuron/methoprene combination. The combinations cypermethrin/methomyl and fenvalerate/diflubenzuron had some effect on the freshly deposited eggs of the Rd strain but produced lower levels of potentiation. With the increase in age of the eggs, the mixture cypermethrin/diflubenzuron showed a lower level of synergism on the 1-2 day-old eggs than was observed in younger eggs. The additive effects, previously detected with some of the mixtures on newly deposited eggs became an antagonistic effect for the 1-2-day-old eggs. The eggs at this stage were more able to resist thejoint action of the other mixtures tested. Moreover, with further increase in the age of the eggs, the combination cypermethrin/diflubenzuron produced a lower level of potentiation on 2-3 day-old eggs, followed by fenvalerate/diflubenzuron at an even lower level, while the other mixtures showed various levels of antagonism.  相似文献   

11.
草地贪夜蛾是2019年新入侵我国的重大农业害虫,对我国粮食生产安全构成了严重威胁。本文在室内条件下,观察记录了雌成虫的产卵节律及其对不同介质的产卵选择性。结果表明,草地贪夜蛾平均最高日产卵量可达229.3粒/头,且主要集中在羽化后7 d内产卵,占总产卵量的68.1%;产卵主要在20:00-05:00进行;在玉米老叶和牛皮纸上的产卵量显著高于玉米心叶、复印纸、玻璃壁和棉花等介质上的产卵量,分别占总产卵量的32.6%和31.1%。这些结果表明,草地贪夜蛾成虫具有较强的繁殖能力和产卵节律性,对玉米老叶片具有显著的产卵偏好。  相似文献   

12.
The brown planthopper, Nilaparvata lugens (Stål) (Hemiptera: Delphacidae), is an insect pest in which offspring are produced by the mating of adult males with adult females. This species is a classic case in which pest resurgence is induced by insecticides. In the past, studies of resurgence mechanisms have focused on insecticide-induced stimulation of reproduction in adult females. To date, however, the role that males play in the resurgence mechanisms of N. lugens has not been investigated. The aim of the present study is to examine changes in protein levels in male accessory glands (MAGs) induced by the insecticides triazophos and deltamethrin and to determine their relationship with vitellin content in the fat bodies and ovaries of adult females in the context of mating pairs. Our results show that protein content in MAGs is significantly affected by male mating status, insecticide type, and insecticide concentration. Insecticide application induced increased protein levels in MAGs. A greater quantity of MAG products was transferred to females via mating. Thus, protein levels in MAGs significantly decreased after mating. Experimental matings indicate that vitellin content in both fat bodies and ovaries of adult females in mating pairs consisting of a treated male and an untreated female (♂t × ♀ck) is significantly greater than that of females in pairs consisting of an untreated male and an untreated female (♂ck × ♀ck). Under various concentrations of the two insecticides, vitellin levels are highest in mating pairs consisting of a treated male and a treated female (♂t × ♀t), followed by mating pairs consisting of an untreated male with a treated female (♂ck × ♀t). These findings demonstrate that (1) insecticides have an effect on males; (2) insecticide effect can be transferred to females; and (3) the reproductive effect of insecticides is strongest in mating pairs in which both the males and females are treated compared to pairs in which only one individual is treated. These findings provide valuable information about the role of males in pesticide-induced resurgence of N. lugens.  相似文献   

13.
稻纵卷叶螟成虫日龄的判定指标   总被引：1，自引：0，他引：1  
本研究旨在明确稻纵卷叶螟成虫生化和形态指标与其日龄之间的关系,为建立稻纵卷叶螟成虫日龄判定的数学模型和预测预报提供理论依据。通过提取稻纵卷叶螟成虫头部生化物质和解剖其生殖器官,研究了羽化后1～6日龄雌雄成虫头部褐脂质、蝶啶含量的变化以及雌蛾卵巢小管和雄蛾精巢的发育状况。研究表明:(1)不同日龄间雌、雄成虫头部褐脂质、蝶啶含量均无显著差异。(2)不同日龄间雌蛾卵巢小管长度、雄蛾精巢大小均具有显著差异(P0.05)。雌蛾1～3日龄、3～6日龄卵巢小管长度与日龄的线性相关系数(R~2)分别为0.615 2和0.128 4。雄蛾精巢长半轴、短半轴长度与日龄的线性相关系数(R~2)分别为0.578 4和0.579 6。(3)利用卵巢小管长度对低日龄雌蛾日龄的估计表明:1 d估计误差平均为±0.56 d,2 d估计误差平均为±0.47 d。利用精巢长半轴对雄蛾日龄的估计表明:1～6 d估计误差平均为±1.28 d、±1.48 d、±1.43 d、±1.32 d、±1.53 d和±1.29 d。利用精巢短半轴对雄蛾日龄的估计表明:1～6 d估计误差平均为±1.15 d、±1.04 d、±0.97 d、±1.12 d、±1.46 d和±1.21 d。综上,头部褐脂质和蝶啶不能准确反映稻纵卷叶螟成虫日龄的变化,不能作为其日龄判定的指标。而雌蛾卵巢小管和雄蛾精巢形态稳定,其大小变化与日龄具有一定的对应关系,卵巢小管和精巢在稻纵卷叶螟成虫日龄的判定中具有较大的应用潜力。  相似文献   

14.
BACKGROUND: One of the most studied actions of juvenile hormone (JH) is its ability to modulate ecdysteroid signaling during insect development and metamorphosis. Previous studies in mosquitoes showed that 20‐hydroxyecdysone (20E) regulates vitellogenin synthesis. However, the action of JH and its mimics, e.g. methoprene, on female reproduction of mosquitoes remains unknown. RESULTS: Here, a major malaria vector, Anopheles gambiae Giles, was used as a model insect to study the action of methoprene on female reproduction. Ecdysteroid titers and expression profiles of ecdysone‐regulated genes were determined before and after a blood meal. An ecdysteroid peak was detected at 12 h post blood meal (PBM). The maximum expression of ecdysone‐regulated genes, such as ecdysone receptor (EcR), hormone receptor 3 (HR3) and vitellogenin (Vg) gene, coincided with the ecdysteroid peak. Interestingly, topical application of methoprene at 6 h PBM delayed ovarian development and egg maturation by suppressing the expression of ecdysone‐regulated genes in female mosquitoes. CONCLUSION: The data suggest that ecdysteroid titers are correlated with Vg synthesis, and methoprene affects vitellogenesis by modulating ecdysteroid action in A. gambiae. Copyright © 2010 Society of Chemical Industry  相似文献   

15.
The effects of lufenuron, a chitin synthesis inhibitor, on oogenesis of Rhodnius prolixus were evaluated. Lufenuron-treated females lay eggs that are pink, but change color with time, acquiring a gray color. The eggs are abnormal in shape and become dehydrated. The percentage of eggs that hatch is decreased compared with the eggs from non-treated females. Digestion of ovaries with KOH yielded an insoluble white material, which was identified as chitin based on infrared and proton NMR spectral analyses along with standard commercial chitin. Glucosamine was detected by HPLC as the major product of acid hydrolysis of the KOH-insoluble material prepared from the ovary. Furthermore, presence of chitin in ovary was confirmed through fluorescent microscopy technique using a wheat germ agglutinin probe and by re-treatment with Streptomyces griseus chitinase that resulted in reduction of chitin-derived fluorescence. Micrographs of ovaries, from animals treated with lufenuron, showed some space between the follicular epithelium and the oocyte membrane. The in vivo incorporation of radioactive N-acetylglucosamine into chitin was inhibited by the presence of lufenuron. These data suggest that chitin present in ovaries of R. prolixus is an important component of the eggs and is involved in oogenesis. Exposure to lufenuron reduces the size of oocytes, number of chorionated oocytes, and also the incorporation of N-acetylglucosamine into chitin in the ovaries. In addition, lufenuron-induced oosorption, decreased the number of eggs laid, modified egg shape and color and reduced the viability of the eggs. Therefore, chitin or chitin-like component of ovaries may be considered as a new target for controlling R. prolixus populations.  相似文献   

16.
为明确亚洲小车蝗Oedaleus asiaticus成虫飞行肌对其体内能源物质利用的情况,采用室内生化法测定能源物质代谢相关5种酶,即3-磷酸甘油醛脱氢酶(glyceraldehyde phosphate dehydrogenase,GAPDH)、3-磷酸甘油脱氢酶(glycerol-3-phosphate dehydrogenase,GDH)、乳酸脱氢酶(lactate dehydrogenase,LDH)、柠檬酸合成酶(citrate synthase,CS)和3-羟酰辅酶A脱氢酶(3-hydroxyacylCoA dehydrogenase,HOAD)活性的变化,并对群居型和散居型的能源物质利用情况进行比较。结果表明,静止状态下,不同日龄的两型亚洲小车蝗雌成虫体内5种代谢相关酶活性不同,初羽化时酶活性较低,随着成虫日龄增加,酶活性呈上升趋势,多至7日龄或10日龄达到最大,13日龄和20日龄后酶活性略有下降。飞行状态下,成虫体内糖类代谢相关酶的活性在飞行前30 min内升高明显,之后上升缓慢或有所下降,至2 h时酶活性达到最大并趋于稳定;而脂类代谢相关酶和三羧酸循环关键酶的活性则随日龄不断升高并保持在较高水平。群居型亚洲小车蝗体内5种酶活性均显著高于散居型。表明亚洲小车蝗飞行所利用的能源物质包括糖类和脂肪,远距离飞行以脂类能源为主。  相似文献   

17.
BACKGROUND: Transovarial transport is defined as the passage of chemicals from the maternal body to eggs within the ovaries. Little is known about the effects of transovarial transport on non‐target species. This study evaluates etoxazole (a transovarial acaricidal compound) on a terrestrial trophic web consisting of a ubiquitous phytophagous mite, Tetranychus urticae Koch, and three species of predatory mites. RESULTS: Predatory mite females that consumed eggs laid by etoxazole‐treated T. urticae also produced infertile eggs. There was a negative relationship between the proportion of etoxazole‐treated T. urticae females and the instantaneous rate of predatory mite increase at the population level (r2 = 0.86). Reduced fertility of etoxazole‐treated T. urticae females continued for 18 days following application. Eggs laid by etoxazole‐treated T. urticae females remained toxic to predatory mite females for 42 days after treatment. CONCLUSIONS: Transovarial transport could lead to magnification in the ecosystem by enhancing both bioavailability and movement of an active ingredient. The potential for enhancement of residual activity by terrestrial organisms and its significance once reaching the food web should be taken into account for new classes of acaricides and insecticides. Copyright © 2012 Society of Chemical Industry  相似文献   

18.
Insect reproduction may be affected by a number of factors including seasonal changes in larval or adult nutrition. The effect of season on the reproductive potential ofMonochamus galloprovincialis (Olivier) females reared inPinus sylvestris L. (Scots pine) logs was investigated by constructing fertility tables for each log that differed only in the season they were cut. Population parameters were compared among three seasonal cohorts. The intrinsic rate of increase and most of the associated population parameters of beetles that emerged from logs cut during spring were higher than for beetles emerged from summer and autumn logs. Slight differences were found between summer and autumn cohorts. We suggest that seasonal differences in the nutritional quality of logs caused differences inM. galloprovincialis survival and reproductive potential. http://www.phytoparasitica.org posting March 16, 2008.  相似文献   

19.
辐照可导致染色体变异,是研究生殖机理的常用辅助方法之一。本研究对不同生理状况下智利小植绥螨雌螨、雄螨、不同发育阶段卵进行不同剂量的伽马辐照,探索其后代发育与繁殖情况,以期解释智利小植绥螨性别决定机制及生殖机理。研究结果表明,在160~640 Gy辐照剂量下,辐照的未交配的雄成螨与正常的未交配的雌成螨交配,F1代中只有雄成螨且仅1/3可育。在45~90 Gy辐照剂量下,辐照的未交配的雌成螨与正常的未交配的雄成螨交配,其子代雌性比随着辐照剂量的增加而减小,且至90 Gy处理下无子代完成胚胎发育。辐照交配后产卵前的雌成螨,其子代雌性比间没有显著差异（77.5%~85.0%）。辐照卵龄0~12 h的卵,没有卵发育至成螨;辐照卵龄12~24 h的卵,其中发育至成螨的全为雌螨;辐照卵龄24~48 h的卵,其中发育至成螨的雌性比随着辐照剂量的增加具有增加的趋势。试验结果推测出父系染色体组参与形成配子且对性别起决定作用;父系染色体组异质化的时间可能集中于卵壳形成后至卵期12 h之间。本试验为智利小植绥螨父系染色体组参与性别决定的机制做出了新的诠释,对深入研究性别决定的机理具有重要的意义。  相似文献   

20.
王晶  臧连生  高树立  赵悦 《植物保护》2024,50(2):172-177
关于短梗长尾啮小蜂Aprostocetus brevipedicellus卵巢结构和发育的相关研究在国内外尚无报道。本研究对短梗长尾啮小蜂的雌性生殖系统结构、卵子形态及卵巢发育特点进行了观察。结果表明,短梗长尾啮小蜂雌性内生殖系统由1对卵巢、1对侧输卵管、1条中输卵管、受精囊、毒囊等组成;雌性外生殖器由产卵管、产卵管鞘、内瓣和外瓣构成。同时,短梗长尾啮小蜂属于卵育型寄生蜂,雌蜂初羽化时卵巢内只含有少量成熟卵子,随着营养的补充和时间的推移,成熟卵子和总卵子数量逐渐增加,并在羽化后72 h数量达到最高值。此外,研究发现,卵巢管内成熟卵子数量和总卵子数量与雌蜂的体长均呈正相关,相关系数分别为0.936和0.941。以上研究结果为科学合理地研究和开发利用短梗长尾啮小蜂提供了理论基础。  相似文献   

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