Publications by authors named "Xiangsheng Chen"

The genus Champion, 1923 comprises 60 described species distributed across the Oriental and Palearctic regions. Species diversity is very high in mainland China, with 28 recorded species. Here, the results of the aquatic beetle survey in Guizhou Province are presented; they began in 2021, when we collected more than 5000 specimens of riffle beetle.

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  • Extragenital Chlamydia trachomatis and Neisseria gonorrhoeae infections are common among men who have sex with men (MSM), and self-sampling may provide easier access to testing for those hesitant to visit health clinics.
  • A study conducted in China compared the diagnostic accuracy of self-collected specimens to clinician-taken specimens, analyzing samples from 325 participants at six STI clinics.
  • The findings demonstrated high agreement and sensitivity of self-sampling for both CT and NG infections, with 62% of MSM showing a preference for self-sampling, indicating it’s an acceptable alternative to traditional clinician-based testing.
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In this study, three new bamboo-feeding species of the genus Huang & Ding, 1979 (Hemiptera, Fulgoroidea, Delphacidae, Tropidocephalini), Lv, Li & Chen, , Lv, Li & Chen, and Lv, Li & Chen, from Southwest China, are described and illustrated, bringing the total number of species in the genus to 34. An updated identification key and checklist to all known species of are provided.

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A new planthopper species, Zheng & Chen, , is described and illustrated from Yunnan, China. A key to differentiate species within the genus is provided. The geographical distribution of species and mitochondrial genome data of the newly described species are also included.

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  • - The study explored what factors help the body naturally clear Chlamydia trachomatis without medication in women in China, highlighting a gap in existing research on this topic.
  • - After analyzing data from over 5,900 women, researchers found that 23.9% experienced spontaneous clearance, usually taking about 27 days, with age, test interval, IUD use, and clue cells being key influencing factors.
  • - The findings suggest that screening efforts should focus on younger women (under 35) who don't use IUDs and are negative for clue cells to improve chlamydia prevention and management strategies.
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, a globally invasive pest, has caused considerable economic losses in many countries. Determining the potential distribution range of is crucial for its effective management and control; however, our understanding of this species remains limited. In this study, Maxent model with occurrence records and environmental variables were fit first and then optimized by selecting the best combination of feature classes and regularization multipliers using the lowest score of corrected Akaike information criterion.

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Pesticides are frequently used to control target pests in the production of spice crops such as chives (Allium ascalonicum). However, little information is available on the responses and underlying mechanisms of pesticide exposure in this crop. Our findings revealed that the uptake, transportation, and subcellular distribution of three typical pesticides-the fungicide pyraclostrobin (PAL), insecticide acetamiprid (ATP), and herbicide pendimethalin (PND) in chives, as well as their physiological, biochemical, metabolic, and transcriptomic responses-were dependent on pesticide properties, especially hydrophobicity.

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is a cross-pollinated plant with important ecological protection and medicinal value in China, but its seed yield is low due to backward and nonstandard production technology. Therefore, we divide the flowering period of into initial, full and final flowering period, measuring the floral morphology, pollen viability, stigma receptivity, nectar volume and nectar concentration, foraging behavior of pollinators, fertilization physiology, seed yield and quality through field observation and indoor testing to explore whether the flowering period affects the floral traits, pollinator behavior and seed production of plants. Our results revealed that the nectar volume, nectar concentration, pollen viability and stigma receptivity at full flowering period were the highest.

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  • STIs are a major global health issue that adversely impacts sexual and reproductive health, especially in low-resource settings due to gaps in evidence and tools.
  • In 2022, the WHO launched an initiative to prioritize STI research, identifying 40 key areas, with a focus on developing affordable diagnostic tests, new treatments, and enhanced epidemiologic data.
  • The priorities also emphasize innovative approaches to STI communication and partner management, and include research related to mpox, highlighting the need for STI studies during disease outbreaks linked to sexual transmission.
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China's bamboo output is closely associated with its national economy; however, it is currently rapidly declining due to damage from the pests and . Identifying regions that are environmentally suitable for these pests is a critical step in their effective control. Therefore, in this study, we used a Maxent model to predict their current and future potential areas of distribution (2021-2040, 2041-2060, and 2061-2080) and explored changes over time using distribution data and related environmental variables.

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Blister beetles of have attracted attention because they contain a large amount of cantharidin (CTD). To date, however, the synthesis and transfer of CTD in adults of are largely unknown. Here, we showed that the larvae are capable of synthesizing CTD and they consume CTD during pupation.

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Climate change is a prominent factor reshaping the distribution of invasive species. Metcalfa pruinosa (Say 1830) (Hemiptera: Flatidae), native to North America, has invaded other continents and poses a serious threat to various agricultural crops and the human residential environment. Understanding the distribution of M.

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Bumblebees play an important ecological economic role as pollinators in nature and agriculture. For reasons of biosecurity, many countries promote the cultivation of native bumblebee species for crop pollination instead of importing "alien" species. In South China, a few bumblebee species are considered useful in this way, particularly, Bombus atripes, Bombus bicoloratus and Bombus breviceps.

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Larvae of the beetle subfamily Rutelinae are poorly described in the literature. Notably, the morphology of the larvae of Callistethus plagiicollis Fairmaire has not previously been analyzed. Here, we report for the first time that these larvae feed on the tubers and roots of Gastrodia elata Blume, an important traditional Chinese herbal medicine, which causes a reduction in the yield and economic value of G.

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Macronychus xuhaoi sp. nov., a new species of the genus Macronychus Mller, 1806 is described from Xizang, Southwest China.

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Article Synopsis
  • Sexually transmitted infections (STIs) caused by Chlamydia trachomatis, Neisseria gonorrhoeae, and Trichomonas vaginalis are critical global health issues, prompting a World Health Organization study called ProSPeRo that evaluated testing methods in eight countries.
  • A comprehensive training program and quality management system were developed to ensure accurate testing at point-of-care clinics, with quality control conducted alongside external assessments by accredited organizations.
  • Results showed over 99% agreement for Chlamydia and Gonorrhea tests, while Trichomonas exhibited lower concordance and higher rates of unsuccessful tests, indicating that while training was effective, improvements are needed for Trichomonas detection.
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Background: Rectal Chlamydia trachomatis (CT) and Neisseria gonorrhoeae (NG) infections among men who have sex with men (MSM) are escalating public health concerns. This study aimed to explore (1) the reliability of self-reported sexual positioning as an indicator for rectal CT and NG screening, and (2) factors associated with rectal CT and NG infections in Shenzhen, China.

Methods: A cross-sectional study was conducted in 2 settings in Shenzhen, China, from April 1, 2021, to March 31, 2022.

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  • Gastrodia elata Blume is an important traditional Chinese medicine that is affected by three Scarabaeidae pests, which harm the plant by damaging its tubers and roots.
  • This study reports the mitochondrial genome structure of these pests, revealing that they share 13 protein-coding genes, 22 transfer RNAs, and 2 ribosomal RNAs, all without gene rearrangements.
  • The research enhances understanding of Scarabaeidae phylogeny and provides essential information for the identification and management of the pests that threaten G. elata.
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Two new species of the bamboo-feeding genus Ding & Yang, 1986, and , are described and illustrated from China. A key based on the male genitalia is given to distinguish species of this genus and a map provided to show their geographic distribution. Habitus photos for adults and illustrations of male genitalia are also given.

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Crack detection plays a critical role in ensuring road safety and maintenance. Traditional, manual, and semi-automatic detection methods have proven inefficient. Nowadays, the emergence of deep learning techniques has opened up new possibilities for automatic crack detection.

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