Publications by authors named "Guang-Yun Li"
Current and future invasion risk of tomato red spider mite under climate change.
J Econ Entomol
August 2024
Article Synopsis
- Tomato red spider mite, Tetranychus evansi, is a significant pest for Solanaceous plants, causing major global economic losses.
- A maximum entropy model was used to predict the current and future distribution of this mite, yielding high-performance results (mean values >0.96).
- The study identified suitable areas for the mite across continents, especially in South America, Africa, and Oceania, with a trend towards northward expansion over time, which is important for future pest management strategies.
Distribution patterns of Phytoseiulus persimilis in response to climate change.
Pest Manag Sci
September 2024
Article Synopsis
- The study focuses on the biocontrol agent Phytoseiulus persimilis, known for preying on two pest mite species, Tetranychus urticae and Tetranychus evansi, and how climate change affects its global distribution.
- The Maximum Entropy model revealed high accuracy in predicting suitable habitats for P. persimilis, identifying critical environmental factors like temperature and precipitation that influence its distribution.
- Key regions identified for effective biocontrol deployment include south-eastern China and parts of the Mediterranean, which can help manage pest spider mites sustainably.
Article Synopsis
- * Direct interactions, like mating, notably decrease the lifespan of female mites while increasing their reproductive output, contrasting with no significant impact on male mites.
- * The findings suggest that direct contact with mates is more critical for mite survival and reproduction than indirect cues, emphasizing the need for further research on these dynamics in other species.
Article Synopsis
- Parental care behavior in organisms, especially in challenging environments, has evolved to boost reproductive success, but variations in this behavior, like egg-guarding, are not well understood.!* -
- This study focuses on the predatory mite, examining how maternal care affects offspring survival and competition, revealing that females modify their egg-guarding based on the presence of competitors.!* -
- Results show that maternal care significantly increases egg survival rates and negatively impacts the survival of competing species, suggesting that co-releasing certain mite species for pest management should be avoided.!*
Article Synopsis
- Aphids, which are significant agricultural pests, rely on symbiotic relationships with microorganisms like Serratia symbiotica to enhance their adaptability and combat predators, affecting biological control efficiency.
- The study confirms that Serratia improves aphid growth and reproduction but shortens their lifespan and also impairs the ladybeetle predator, Propylaea japonica, directly influencing its predation behavior and development.
- Findings suggest that targeting endosymbionts like Serratia could provide innovative strategies for controlling aphid populations more effectively in agricultural settings.
Article Synopsis
- - Numerous studies on aging have primarily focused on fruit flies and nematodes, largely overlooking other organisms, such as the two-spotted spider mite, which exhibits unique life-history traits like growth and reproduction during early adulthood.
- - The study examined how dietary restriction and delayed mating affect aging patterns in female and male spider mites, finding that females benefit from a specific diet and delayed reproduction, while males did not show significant lifespan changes in response to these factors.
- - Results indicated that dietary restriction and delayed mating can extend the lifespan of female spider mites without trade-offs in other reproductive traits, highlighting diet restriction as an effective anti-aging strategy for this species.
Article Synopsis
- Sex dimorphism in spider mites varies with environmental factors like food quality and temperature, affecting traits such as development duration and longevity.
- A meta-analysis of 42 studies covering 26 species revealed that female spider mites generally have a longer development time and greater longevity, though these traits depend on the host plant and temperature.
- Specifically, males outlive females at lower temperatures but the opposite is true at higher temperatures; the type of host plant also affects the lifespan differences between the sexes.
Sex-specific response to delayed and repeated mating in spider mite .
Bull Entomol Res
February 2021
Article Synopsis
- Sexual interaction significantly affects the reproductive schedules and fitness traits of both male and female spider mites, but the impact varies between the sexes.
- The study found that females benefit from delayed mating, leading to longer lifespans, while repeated mating shortens their lives, highlighting the different mating strategies between genders.
- In contrast, male spider mites showed no lifespan changes with different mating frequencies, indicating that sexual interaction costs are higher for females, who have a lower optimal mating frequency compared to males.*
Article Synopsis
- * In a study with spider mites, predator cues slowed development and reduced female lifespan and reproductive output, while having little effect on males.
- * Parental effects were notable in the early stages of offspring development, showing sex-specific responses with delayed hatching in daughters but not sons; stress from parents did not significantly affect offspring lifespan after early development.
Article Synopsis
- This study investigates how intermittent fasting (IF) affects lifespan and reproduction in spider mites, a model species with sexual dimorphism, by comparing responses between males and females under different IF durations.* -
- Researchers found that female lifespan improved with moderate IF but decreased at higher levels, while male lifespan consistently declined; also, female longevity was positively linked to fecundity within each treatment.* -
- The results highlight a trade-off between survival and reproduction: females on IF may live longer but reproduce less, showing that optimal fasting levels vary by sex and emphasizing the importance of resource availability in life history strategies.*
Article Synopsis
- This paper reviews type depositories for 1,370 new mite species published between 2012 and 2016 in two journals, highlighting a notable imbalance among the 134 collections involved.
- The Zoological Institute of the Russian Academy of Sciences leads with 145 species, representing 10% of the total, while the top ten collections combined account for 48% of the new species.
- Additionally, over half of the collections are located in Europe, yet developing countries have more new species deposits (741) compared to developed ones (629), with specific countries leading in different continents.
Article Synopsis
- - A study reviews type localities and repositories for 242 new mite species from the order Sarcoptiformes, published in Zootaxa and Systematic & Applied Acarology between 2013-2015.
- - These new species are concentrated in 50 families, with 62% coming from the top 10 families, highlighting a significant family diversity.
- - Geographically, 72% of the new species are found in the top 10 countries, with a notable presence in Asia, particularly Vietnam, China, India, and the Philippines, while 61% of the countries have only 1-3 new species.
Article Synopsis
- A study compared low-dose and high-dose rATG induction therapy to a control group in kidney transplant recipients to find an optimal balance between effectiveness and complications from 2009 to 2012.
- Results showed that both low-dose and high-dose rATG groups had lower acute rejection rates compared to the control group, although the long-term survival rates and early renal function recovery were similar across all groups.
- The high-dose rATG group experienced more cases of CMV infections and thrombocytopenia, suggesting low-dose rATG may be a better option for renal transplantation.
[The effect of human placenta-derived mesenchymal stem cells on cord blood CD8(+);T cells activation, cellcycle and secretion of IL-17].
Xi Bao Yu Fen Zi Mian Yi Xue Za Zhi
January 2012
Article Synopsis
- The study investigates how human placenta-derived mesenchymal stem cells (hPMSCs) affect the activation and cytokine secretion of CD8(+) T cells from cord blood.
- Researchers isolated and cultured hPMSCs, then analyzed CD8(+) T cells using specific techniques to measure their activation and cell cycle.
- Results show that hPMSCs inhibit the activation of CD8(+) T cells while increasing their secretion of IL-17, suggesting potential applications in cell-based therapies.
Article Synopsis
- Current standard PCR methods are inadequate for biotech and clinical research, prompting the need for a better quantitative PCR technique.
- PE company discovered a linear relationship between initial template number and cycling time, leading to the development of a quantitative PCR technique, though it still suffers from high error rates.
- A new mathematical model integrates scientific principles and accurately describes the relationship between product quantity, fluorescence intensity, and initial template number, promising improved accuracy and significantly lower error rates in quantitative PCR analysis.