Risk Analysis of Passalora sequoiae Invasion to China with Imported Coniferous Wood

According to international standard plant quarantine measures and principle risk analysis(ISPM No.11),a risk assessment was carried out for Passalora sequoiae through geographical distribution,possibility of colonization,probability of diffusion,economic importance and difficulty in risk management.Results show that P.sequoiae has a greater risk of introduction and diffusion,and it has distributed in parts of China.It is suggested that P.sequoiae should be added to the list of forest dangerous pests in China.Besides,porting departments should focus on the pathogen on imported host seedlings like Cryptomeria.

An Important Insect of the Genus Pseudips: Pseudips mexicanus Hopkins

At present, there are three species of Pseudips known in the world, and P. mexicanus is an important one. The paper mainly introduced the taxonomic status, morphological characteristics and biological characteristics of P. mexicanus, and provided a key to P. mexicanus and its allied species. There is no distribution of P. mexicanus in China, and the results can provide the reference for further study of the insect.

Preliminary Study on Acoustic Characteristics of Ips grandicollis Larvae

[Objectives]The paper was to analyze the acoustic characteristics of Ips grandicollis larvae by pest acoustic detection technology,and to provide some reference for quarantine identification of pest larvae at ports.[Methods]The trial was performed in a self-invented insect sound recording container with good sound insulation effect.I.grandicollis larvae were placed separately on split P.ponderosa logs to observe and record the activities of larvae.AED-2010 was used for signal acquisition and SP-1 probe was used to collect signals at a distance of 5 cm from the larvae.The activity signals of larvae were intercepted,and the signal de-noising was further processed by Goldwave software.Finally,the acoustic signals were carried out correlation analysis by using MATLAB toolbox.[Results]I.grandicollis larvae had more regular feeding acoustic signal characteristics than crawling acoustic signal characteristics,and the two types of acoustic signal characteristics were quite different.The duration of feeding acoustic signal pulse of I.grandicollis larvae was 50-85 ms,the frequency was less than 1 KHz,and the signal frequency was mainly distributed in the range of 510.00-620.20 Hz.There was no obvious law in time domain features of larval crawling acoustic signals and the signal frequency was low,which was below 0.6 KHz and was mainly distributed in the range of 258.00-530.00 Hz.[Conclusions]It is feasible to carry out quarantine identification of I.grandicollis larvae by using feeding acoustic signals.It is suggested to select the feeding acoustic signals with obvious characteristics in the sound monitoring and identification of pests.

Recent advances in metal organic frameworks for the catalytic degradation of organic pollutants

Metal organic frameworks(MOFs)with their large surface area and numerous active sites have attracted significant research attention.Recently,the application of MOFs for the catalytic degradation of organic pollutants has provided effective solutions to address diverse environmental problems.In this review,the latest progress in MOF-based removal and degradation of organic pollutants is summarized according to the different roles of MOFs in the removal reaction systems,such as physical adsorbents,enzyme-immobilization carriers,nanozymes,catalysts for photocatalysis,photo-Fenton and sulfate radical based advanced oxidation processes(SR-AOPs).Finally,the opportunities and challenges of developing advanced MOFs for the removal of organic pollutants are discussed and anticipated.

Improving the surveillance and response system to achieve and maintain malaria elimination:a retrospective analysis in Jiangsu Province,China

Background:Following initiation of China’s National Malaria Elimination Action Plan(NMEAP)in 2010,the'1-3-7’approach was developed and rolled out in China to facilitate the malaria elimination programme and accelerate malaria elimination.This study aims to summarize and condense these experiences through a retrospective analysis in Jiangsu Province,which could be adapted and applied in other malaria elimination settings worldwide.Methods:A retrospective analysis of imported malaria cases into China identified through an improved surveillance and response system in Jiangsu Province was carried out for the period of 2001-2020.To improve the malaria surveillance and response system,Centers for Diseases Control and Prevention from the prefectures and counties in Jiangsu province conducted population-level health education to improve healthcare seeking behavior,strengthened capacity of health facilities to improve performance of malaria diagnosis and treatment,and raised the capacity of public health providers to improve implementation of the'1-3-7’approach.Categorical variables were carried out by Chi square tests with Fisher’s exact correction.Results:From 2001 to 2020,a total of 9,879 malaria cases were reported in Jiangsu Province.Since 2012,no indigenous malaria cases have been reported in Jiangsu Province.However,in recent years,there has been a substantial increase of imported falciparum malaria cases.Between 2012 and 2020,an estimated 61.57 million individuals have benefited from population-level health education in Jiangsu Province.For healthcare-seeking services among the 2,423 imported malaria cases,687(28.4%)and 1,104(45.6%)cases visited hospitals on the first day and the second day from symptom onset,respectively.A total of 1,502(61.9%)cases were diagnosed on the first day at medical facilities.Jiangsu Province achieved 100%,99.4%and 98.3%completion rate in terms of case detection and notification(within one day),case investigation(within three days)and foci response and disposition(within seven days),respectively.The improved surveillance and response system in Jiangsu Province plays an important role in preventing the re-introduction of malaria and maintaining the malaria-free status.Conclusions:Jiangsu Province has maintained its malaria-free status since 2012.The continuous improvement of a surveillance and response system plays an important role in the early detection and rapid response of potential malaria-related outbreaks in Jiangsu,China,and has important lessons for other malaria eliminating settings.Remaining vigilant in the detection of imported malaria cases and maintaining an active surveillance and response system is critical to sustain the success of malaria elimination.