Long-term pre-exposure of the pest mite Tyrophagus putrescentiae to sub-lethal residues of bifenthrin on rapeseed did not affect its susceptibility to bifenthrin

2011 ◽  
Vol 30 (9) ◽  
pp. 1227-1232 ◽  
Author(s):  
Jitka Stará ◽  
Marta Nesvorná ◽  
Jan Hubert
Keyword(s):  
Tyrophagus Putrescentiae ◽  
Pest Mite

scholarly journals Characteristic and Expression of Hsp70 and Hsp90 Genes from Tyrophagus Putrescentiae and Their Response to Thermal Stress

2021 ◽  
Author(s):  
Jing Wang ◽  
Sheng-quan Que ◽  
Meng-ru Jin ◽  
Xin-yu Liu ◽  
Tian-rong Xin ◽  
...  
Keyword(s):  
Thermal Stress ◽  
Phylogenetic Analyses ◽  
Great Influence ◽  
Amino Acid Residues ◽  
Tyrophagus Putrescentiae ◽  
Reading Frame ◽  
Real Time Quantitative Pcr ◽  
Relative Expression Level ◽  
Pest Mite ◽  
Great Harm

Abstract Tyrophagus putrescentiae (T. putrescentiae) is a worldwide tored grain pest mite which has do great harm to human’s economy and health. Temperature has a great influence on the population dynamics of T. putrescentiae. In this study, the cDNA of T. putrescentiae HSP70 and HSP90 (designated TpHSP70-1, TpHSP70-2 and TpHSP90) were cloned, and their expression were determined by fluorescent real time quantitative PCR. Results indicate that TpHSP70-1, TpHSP70-2 and TpHSP90 contained an open reading frame of 1,998 bp, 1,984 bp and 2,157 bp that encoded 665, 661 and 718 amino acid residues, respectively. Sequences and phylogenetic analyses suggested that TpHSP70 and TpHSP90 showed high homology with other species. The RT-qPCR results indicated the relative expression level of TpHSP90 and TpHSP70 gene at different stages were different. Also thermal stress could increase its expression significantly. This study indicates that TpHSP70 and TpHSP90 are very important genes for T. putrescentiae to defend against thermal stress.

scholarly journals Characteristic and expression of Hsp70 and Hsp90 genes from Tyrophagus putrescentiae and their response to thermal stress

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Jing Wang ◽  
Sheng-quan Que ◽  
Xinyu Liu ◽  
Mengru Jin ◽  
Tian-Rong Xin ◽  
...  
Keyword(s):  
Thermal Stress ◽  
Extreme Temperature ◽  
Open Reading Frames ◽  
Amino Acid Residues ◽  
Tyrophagus Putrescentiae ◽  
Stored Grain ◽  
Negative Effects ◽  
Real Time Quantitative Pcr ◽  
Pest Mite ◽  
Shock Proteins

AbstractThe development of insects is critically affected by temperature, which therefore plays an important role in the control of stored grain pests. Extreme temperature stress conditions lead to biological responses in mites, such as the synthesis of heat shock proteins. Tyrophagus putrescentiae (Tp) is a pest mite in stored grain that has negative effects on both economy and health. Since T. putrescentiae population dynamics are strongly influenced by temperature, in the present study we have cloned the cDNA of HSP70 and HSP90 (referred to as TpHSP70-1, TpHSP70-2 and TpHSP90) and determined their expression by fluorescence real time quantitative PCR. TpHSP70 and TpHSP90 showed high homology with similar genes in other species and the open reading frames of TpHSP70-1, TpHSP70-2 and TpHSP90 encoded proteins of 665, 661 and 718 amino acid residues, respectively. Under thermal stress, expression of TpHsp70-1 and TpHsp90 was up-regulated at higher temperatures, suggesting their role in the defense against thermal stress.

A modified Munger cell for testing long-term effects of predator-induced stress on prey: an example using Tyrophagus putrescentiae (Acaridae) and its predator Neoseiulus cucumeris (Phytoseiidae)

2019 ◽  
Vol 24 (10) ◽  
pp. 2285-2289
Author(s):  
XIAOYING WEI ◽  
ZHI-QIANG ZHANG
Keyword(s):  
New Method ◽  
Tyrophagus Putrescentiae ◽  
Long Term Effects ◽  
Short Term ◽  
Neoseiulus Cucumeris ◽  
Induced Stress ◽  
Long Term Experiments

Predators can influence prey directly by consuming them, or indirectly by inducing stress to them. In previous studies, the exposure of leaves or containers to predators is short term and the replacement of such predator-exposed units for any long-term experiments is laborious. This study aims to establish a new method to enable continuous predator-induced stress to prey by using a modified Munger cell, with Tyrophagus putrescentiae and its predator predator Neoseiulus cucumeris as an example.

Re-adaptation from alternative prey to target prey increased predation of predator on target mite

2019 ◽  
Vol 24 (3) ◽  
pp. 467 ◽  
Author(s):  
Jie Su ◽  
An-Di Zhu ◽  
Guo-Dong Han ◽  
Fang Dong ◽  
Jing Chen ◽  
...  
Keyword(s):  
Natural Enemy ◽  
Spider Mite ◽  
Biocontrol Agent ◽  
Mass Rearing ◽  
Predatory Mites ◽  
Alternative Prey ◽  
Tyrophagus Putrescentiae ◽  
Potential Biocontrol Agent ◽  
Tetranychus Turkestani

Neoseiulus bicaudus (Wainstein) is a natural enemy of spider mite and thrip and also a potential biocontrol agent for Tetranychus turkestani (Tetranychidae). Tyrophagus putrescentiae (Schrank) is an important alternative prey of N. bicaudus for mass rearing. We aimed to determine whether previous long-term feeding history, rearing on alternative prey versus target prey affected the performance of N. bicaudus. Therefore, the prey preference and functional response of predatory mites were compared between three strains: N. bicaudus fed on T. turkestani (TTS); N. bicaudus fed on T. putrescentiae (TPS); and N. bicaudus re-adapted from T. putrescentiae to T. turkestani (TPRS). When fed with the target prey, the preference rate and consumption of the TPS strain were significantly lower than the TTS strain. In addition, after 3-day-re-adaptation, the predatory mites (TPRS) increased their preference rate and consumption to target prey. The results suggested that re-adaptation before release could improve the ability of N. bicaudus to control its target prey.

Therapy and prevention for mental health: What if mental diseases are mostly not brain disorders?

2019 ◽  
Vol 42 ◽  
Author(s):  
John P. A. Ioannidis
Keyword(s):  
Mental Health ◽  
Mental Disease ◽  
Brain Disorders ◽  
Social Stressors ◽  
Labor Education ◽  
Mental Diseases ◽  
Long Term Follow Up ◽  
Political Decisions

AbstractNeurobiology-based interventions for mental diseases and searches for useful biomarkers of treatment response have largely failed. Clinical trials should assess interventions related to environmental and social stressors, with long-term follow-up; social rather than biological endpoints; personalized outcomes; and suitable cluster, adaptive, and n-of-1 designs. Labor, education, financial, and other social/political decisions should be evaluated for their impacts on mental disease.

Conceptual short-term memory (CSTM) supports core claims of Christiansen and Chater

2016 ◽  
Vol 39 ◽  
Author(s):  
Mary C. Potter
Keyword(s):  
Working Memory ◽  
Rapid Serial Visual Presentation ◽  
Language Comprehension ◽  
Short Term Memory ◽  
Visual Presentation ◽  
Long Term Memory ◽  
Short Term ◽  
Term Memory ◽  
Use Of Knowledge

AbstractRapid serial visual presentation (RSVP) of words or pictured scenes provides evidence for a large-capacity conceptual short-term memory (CSTM) that momentarily provides rich associated material from long-term memory, permitting rapid chunking (Potter 1993; 2009; 2012). In perception of scenes as well as language comprehension, we make use of knowledge that briefly exceeds the supposed limits of working memory.

Brief summary of Kleť photographic search programme for minor planets

1999 ◽  
Vol 173 ◽  
pp. 189-192
Author(s):  
J. Tichá ◽  
M. Tichý ◽  
Z. Moravec
Keyword(s):  
Ccd Camera ◽  
Minor Planet ◽  
Minor Planets ◽  
Main Belt

AbstractA long-term photographic search programme for minor planets was begun at the Kleť Observatory at the end of seventies using a 0.63-m Maksutov telescope, but with insufficient respect for long-arc follow-up astrometry. More than two thousand provisional designations were given to new Kleť discoveries. Since 1993 targeted follow-up astrometry of Kleť candidates has been performed with a 0.57-m reflector equipped with a CCD camera, and reliable orbits for many previous Kleť discoveries have been determined. The photographic programme results in more than 350 numbered minor planets credited to Kleť, one of the world's most prolific discovery sites. Nearly 50 per cent of them were numbered as a consequence of CCD follow-up observations since 1994.This brief summary describes the results of this Kleť photographic minor planet survey between 1977 and 1996. The majority of the Kleť photographic discoveries are main belt asteroids, but two Amor type asteroids and one Trojan have been found.

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