In this paper,a new species of pentatomid bug Menida speciosa Zheng & Xiong,sp.nov.is described from southwestern part of Yunnan Province of China;and the Menida salvazana Distant 1921 is redescribed and f...In this paper,a new species of pentatomid bug Menida speciosa Zheng & Xiong,sp.nov.is described from southwestern part of Yunnan Province of China;and the Menida salvazana Distant 1921 is redescribed and figured based upon the type material.展开更多
In order to understand the occurrence and development of Semanotus bifasciatus （Motschulsky）, a borer insect of Platycladus orientalis in parts of northern and eastern China and to improve its prediction, the develo...In order to understand the occurrence and development of Semanotus bifasciatus （Motschulsky）, a borer insect of Platycladus orientalis in parts of northern and eastern China and to improve its prediction, the developmental threshold temperature （C1） and effective accumulated temperature （K） of S. bifasciatus were determined under conditions of constant and variable temperatures. The results show that under constant temperatures the value of C1 has a range of 8.90±1.77℃and the value of K lies between 95.19±13.14 degree-day for eggs; the values for larvae are C1= 13.26±3.06℃ and the number of degree-day is K 2,885.07±187.87 degree-day; for pupae the ranges are C1 = 8.93±2.49℃ and K= 131.20±25.63 degree-day. Under the condition of ambient temperatures, the values for eggs are C1= 17.33±1.24℃ and K= 70.79±8.99 degree-day. It is suggested that S. bifasciatus adults over-winter in a state of dormancy, not at a diapause. Warm winter may accelerate the life cycle ofS. bifasciatus. Equations can be used to predict an early occurrence ofS. bifasciatus.展开更多
The nutritional ingredients of adult Holotrichia parallela Motschulsky were analyzed comprehensively in this study.It was showed that the content of water in H.parallela was 78.39%,and the content of dry substances wa...The nutritional ingredients of adult Holotrichia parallela Motschulsky were analyzed comprehensively in this study.It was showed that the content of water in H.parallela was 78.39%,and the content of dry substances was 21.61%;among dry substances,crude protein,crude fat,ash and crude fiber accounted for 70.27%,16.26%,3.61% and 10.36%,respectively.The mineral elements,trace mineral elements and heavy metals were also determined by Microwave Digestion-Inductively Coupled Plasma Mass Spectrometry.The results indicated that the contents of major elements including potassium（K）,magnesium（Mg）,Calcium（Ca）,iron（Fe）were rich,especially the potassium（K）,up to 2 851 mg/kg.In addition,the content of copper was 8.770 167 mg/kg,and the selenium was 0.108 232 mg/kg.It was suggested that H.parallela could be used as good human food and animal feed.展开更多
To study the effect of jasmonates(JAs)on the resistance of economic forest plants to insects,R osa rugosa‘Plena'leaves were treated with 1 mmol/L jasmonic acid(JA),methyl jasmonate(MeJA)and Z-jasmone,then the con...To study the effect of jasmonates(JAs)on the resistance of economic forest plants to insects,R osa rugosa‘Plena'leaves were treated with 1 mmol/L jasmonic acid(JA),methyl jasmonate(MeJA)and Z-jasmone,then the content of tannin and total phenol in leaves and the feeding area of Monolepta hieroglyphica adults on leaves were measured.Changes in the activities of detoxification enzymes in adult M.hieroglyphica that had fed on leaves treated with JAs were also studied.Tannin and total phenol levels in leaves increased significantly after treatment with JAs,and tannin level was 1.36–1.55-fold higher than in the control after treatment with 1 mmol/L MeJA.The total content of phenol in leaves treated with 1.0 mmol/L Z-jasmone increased by 1.33–2.20-fold compared with those of the control.The activities of detoxification enzymes in adults were inhibited to differing degrees:activity of alkaline phosphatase(AKP)first increased,then decreased;the activities of acid phosphatase(ACP),glutathione S-transferases(GSTs)and carboxylesterase(CarE)following treatment with 1 mmol/L MeJA were significantly reduced and were 22%–31%,11%–26%,and 11%–31%lower than those of the control,respectively.Moreover,the feeding area of adult M.hieroglyphica on the leaves treated with JAs was significantly reduced(P<0.05).The feeding area of economic forest R.rugosa‘Plena'leaves treated with 1 mmol/L MeJA decreased by 17%–43%compared with that of the control.Moreover,the decrease in the adult M.hieroglyphica feeding area was highly positively correlated with the content of tannin and positively correlated with the contents of total phenol of economic forest R.rugosa‘Plena'leaves.The reduced feeding area of adult M.hieroglyphica was highly negatively correlated with the activities of AKP and ACP and negatively correlated with those of the GSTs.In conclusion,the use of 1 mmol/L MeJA can noticeably decrease the deleterious effects of adult M.hieroglyphica.展开更多
Based on an analytical TCT-GC/MS method, volatile compounds of branches of Platycladus orientalis under three physiological states （healthy, weak and baited trees） were analyzed. The results showed that α-pinene, ...Based on an analytical TCT-GC/MS method, volatile compounds of branches of Platycladus orientalis under three physiological states （healthy, weak and baited trees） were analyzed. The results showed that α-pinene, β-phellandrene, 3-careen, limonene and thujopsene were released under all three physiological states. There were other kinds of volatiles released from branches of weak P. orientalis trees, such as camphene, γ-terpinene, （＋）-4-carene and cedrene, but these four volatiles compounds were not released from the branches of healthy P. orientalis. Volatile components from the physically damaged branches of P. orientalis had changed. β-terpinene, mycrene, isocaryophillene and caryophyllene were identified in both healthy and weak branches of P. orientalis. Only cedrene was identified in the baited wood. Electroantennogram （EAG） tests were conducted with nine volatile compounds from the branches of P. orientalis. Antennnae of male and female Semanotus bifasciatus （Motschulsky） were highly sensitive to these nine volatile compounds. Cedrene elicited the strongest response, whereas β-terpinene the lowest. Males and females showed no signifi-cant difference in their EAG responses to the nine volatile compounds.展开更多
[Objective] The study aimed to provide the theoretical basis for the development of Saponins isolated from Sapindus mukurossi in the application of pesticides and lay the foundation for the development and utilization...[Objective] The study aimed to provide the theoretical basis for the development of Saponins isolated from Sapindus mukurossi in the application of pesticides and lay the foundation for the development and utilization of Sapindus species resources in Yunnan province. [ Method] Saponine from S. mukurossi was extracted by the methods of dipping, feed mixed with pesticide, unlimited feeding, and conducted indoor toxicity determination on Plutella xylostella （Linnaeus）, Sitophilus zeamais motschulsky and Drosophila. [ Result] Saponin had no poisoning activity on maize weevil, while it had certain biological activity on diamondback moth and fruit fly, but it had high activity on fruit fly, when the concentration was 50 mg/ml, mortality was 100% at 72 h, LCso was 4.06 mg/ml at 72 h, LTso was 30.19 h when the concentration was 25.000 mg/ml. [Conclusion] Saponins from S. mukurossi could be develooed and utilized as the material for botanical eesticide.展开更多
文摘In this paper,a new species of pentatomid bug Menida speciosa Zheng & Xiong,sp.nov.is described from southwestern part of Yunnan Province of China;and the Menida salvazana Distant 1921 is redescribed and figured based upon the type material.
文摘In order to understand the occurrence and development of Semanotus bifasciatus （Motschulsky）, a borer insect of Platycladus orientalis in parts of northern and eastern China and to improve its prediction, the developmental threshold temperature （C1） and effective accumulated temperature （K） of S. bifasciatus were determined under conditions of constant and variable temperatures. The results show that under constant temperatures the value of C1 has a range of 8.90±1.77℃and the value of K lies between 95.19±13.14 degree-day for eggs; the values for larvae are C1= 13.26±3.06℃ and the number of degree-day is K 2,885.07±187.87 degree-day; for pupae the ranges are C1 = 8.93±2.49℃ and K= 131.20±25.63 degree-day. Under the condition of ambient temperatures, the values for eggs are C1= 17.33±1.24℃ and K= 70.79±8.99 degree-day. It is suggested that S. bifasciatus adults over-winter in a state of dormancy, not at a diapause. Warm winter may accelerate the life cycle ofS. bifasciatus. Equations can be used to predict an early occurrence ofS. bifasciatus.
文摘The nutritional ingredients of adult Holotrichia parallela Motschulsky were analyzed comprehensively in this study.It was showed that the content of water in H.parallela was 78.39%,and the content of dry substances was 21.61%;among dry substances,crude protein,crude fat,ash and crude fiber accounted for 70.27%,16.26%,3.61% and 10.36%,respectively.The mineral elements,trace mineral elements and heavy metals were also determined by Microwave Digestion-Inductively Coupled Plasma Mass Spectrometry.The results indicated that the contents of major elements including potassium（K）,magnesium（Mg）,Calcium（Ca）,iron（Fe）were rich,especially the potassium（K）,up to 2 851 mg/kg.In addition,the content of copper was 8.770 167 mg/kg,and the selenium was 0.108 232 mg/kg.It was suggested that H.parallela could be used as good human food and animal feed.
基金financially by the National Natural Science Foundation of China(No.31800546)the National Key R&D Program of China(No.2018YFC1200400)the Fundamental Research Funds for the Central Universities(No.2572016CA11)。
文摘To study the effect of jasmonates(JAs)on the resistance of economic forest plants to insects,R osa rugosa‘Plena'leaves were treated with 1 mmol/L jasmonic acid(JA),methyl jasmonate(MeJA)and Z-jasmone,then the content of tannin and total phenol in leaves and the feeding area of Monolepta hieroglyphica adults on leaves were measured.Changes in the activities of detoxification enzymes in adult M.hieroglyphica that had fed on leaves treated with JAs were also studied.Tannin and total phenol levels in leaves increased significantly after treatment with JAs,and tannin level was 1.36–1.55-fold higher than in the control after treatment with 1 mmol/L MeJA.The total content of phenol in leaves treated with 1.0 mmol/L Z-jasmone increased by 1.33–2.20-fold compared with those of the control.The activities of detoxification enzymes in adults were inhibited to differing degrees:activity of alkaline phosphatase(AKP)first increased,then decreased;the activities of acid phosphatase(ACP),glutathione S-transferases(GSTs)and carboxylesterase(CarE)following treatment with 1 mmol/L MeJA were significantly reduced and were 22%–31%,11%–26%,and 11%–31%lower than those of the control,respectively.Moreover,the feeding area of adult M.hieroglyphica on the leaves treated with JAs was significantly reduced(P<0.05).The feeding area of economic forest R.rugosa‘Plena'leaves treated with 1 mmol/L MeJA decreased by 17%–43%compared with that of the control.Moreover,the decrease in the adult M.hieroglyphica feeding area was highly positively correlated with the content of tannin and positively correlated with the contents of total phenol of economic forest R.rugosa‘Plena'leaves.The reduced feeding area of adult M.hieroglyphica was highly negatively correlated with the activities of AKP and ACP and negatively correlated with those of the GSTs.In conclusion,the use of 1 mmol/L MeJA can noticeably decrease the deleterious effects of adult M.hieroglyphica.
文摘Based on an analytical TCT-GC/MS method, volatile compounds of branches of Platycladus orientalis under three physiological states （healthy, weak and baited trees） were analyzed. The results showed that α-pinene, β-phellandrene, 3-careen, limonene and thujopsene were released under all three physiological states. There were other kinds of volatiles released from branches of weak P. orientalis trees, such as camphene, γ-terpinene, （＋）-4-carene and cedrene, but these four volatiles compounds were not released from the branches of healthy P. orientalis. Volatile components from the physically damaged branches of P. orientalis had changed. β-terpinene, mycrene, isocaryophillene and caryophyllene were identified in both healthy and weak branches of P. orientalis. Only cedrene was identified in the baited wood. Electroantennogram （EAG） tests were conducted with nine volatile compounds from the branches of P. orientalis. Antennnae of male and female Semanotus bifasciatus （Motschulsky） were highly sensitive to these nine volatile compounds. Cedrene elicited the strongest response, whereas β-terpinene the lowest. Males and females showed no signifi-cant difference in their EAG responses to the nine volatile compounds.
基金Supported by National Natural Science Foundation of China(30660108)~~
文摘[Objective] The study aimed to provide the theoretical basis for the development of Saponins isolated from Sapindus mukurossi in the application of pesticides and lay the foundation for the development and utilization of Sapindus species resources in Yunnan province. [ Method] Saponine from S. mukurossi was extracted by the methods of dipping, feed mixed with pesticide, unlimited feeding, and conducted indoor toxicity determination on Plutella xylostella （Linnaeus）, Sitophilus zeamais motschulsky and Drosophila. [ Result] Saponin had no poisoning activity on maize weevil, while it had certain biological activity on diamondback moth and fruit fly, but it had high activity on fruit fly, when the concentration was 50 mg/ml, mortality was 100% at 72 h, LCso was 4.06 mg/ml at 72 h, LTso was 30.19 h when the concentration was 25.000 mg/ml. [Conclusion] Saponins from S. mukurossi could be develooed and utilized as the material for botanical eesticide.
