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Hongzhang Zhou - One of the best experts on this subject based on the ideXlab platform.
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Two new species and a new synonym of the genus Paederus Fabricius (Coleoptera: Staphylinidae: Paederinae) from China.
Zootaxa, 2014Co-Authors: Alexey Solodovnikov, Hongzhang ZhouAbstract:Two new species of the genus Paederus Fabricius, 1775 from mainland China are described: Paederus (HarpoPaederus) brevior sp. nov. (Shaanxi) and P. (H.) multidenticulatus sp. nov. (Hubei). One new synonym is proposed: Paederus parvidenticulatus Li, Zhou & Solodovnikov, 2013 = Paederus symmetricus Li, Zhou & Solodovnikov, 2013 syn. nov.
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Three new species of the genus Paederus Fabricius (Coleoptera: Staphylinidae: Paederinae) from China.
Zootaxa, 2014Co-Authors: Alexey Solodovnikov, Hongzhang ZhouAbstract:Three new species of the genus Paederus Fabricius from China are described: Paederus bilobus sp. nov. from Hainan, P. lateralis sp. nov. from Yunnan, and P. brunneolus sp. nov. from Xinjiang.
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five new species of the genus Paederus from mainland china with a review of the chinese fauna of the subtribe paederina coleoptera staphylinidae paederinae
Annals of The Entomological Society of America, 2013Co-Authors: Xiaoyan Li, Hongzhang Zhou, Alexey SolodovnikovAbstract:ABSTRACT Five new species of the genus Paederus presumably forming a monophyletic group that cannot be assigned to any of the hitherto known subgenera are described from mainland China: Paederus biacutus sp. nov. from Fujian, Paederus parvidenticulatus sp. nov. from Guizhou, Paederus sinisterobliquus sp. nov. from Hubei, Paederus symmetricus sp. nov. from Guangxi and Guizhou, and Paederus volutobliquus sp. nov. from Guangdong. Given the problems of the higher-level classification of the subtribe Paederina, that is the taxon equivalent to Paederus sensu lato according to some authors, the entire group is reviewed for the territory of China. A regional list of species is updated, and identification keys to genera of the subtribe Paederina, subgenera of the genus Paederus, and five new species of the P. biacutus species-group fauna of China are given.
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A review of Chinese species of the subgenus Paederus s. str. (Coleoptera: Staphylinidae: Paederinae) with description of a new species
Zootaxa, 2009Co-Authors: Hongzhang ZhouAbstract:Chinese species of the subgenus Paederus s. str. (genus Paederus Fabricius, 1775) are reviewed. Paederus (s. str.) xinjiangensis Li & Zhou, n. sp. is described from Xinjiang, Northwest China. Male genitalia and other critical characters are illustrated for five other Chinese species of the subgenus Paederus s. str., namely P. (s. str.) socius Bernhauer, 1916, P. (s. str.) coxalis Fauvel, 1895, P. (s. str.) parallelus Weise, 1877, P. pilifer (s. str.) Motschulsky, 1860 and P. (s. str.) sondaicus Fauvel, 1895. A key to the six Chinese species of Paederus s. str.. is presented and their geographical distribution in China is mapped.
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Phylogenetic analysis and taxonomy of the subgenus GnathoPaederus Chapin and related groups of Paederus s.l. (Coleoptera:Staphylinidae:Paederinae)
Invertebrate Systematics, 2009Co-Authors: Hongzhang ZhouAbstract:The paederine genus Paederus s.l. (Coleoptera : Staphylinidae) is a hyperdiverse group of some 500 species worldwide. Although the subtribe Paederina, in which the genus resides, is monophyletic the status of numerous genera and subgenera is questionable and the current classification is likely to be flawed. As part of detailed studies on the paederine fauna of China, we undertook a preliminary morphologically-based phylogenetic analysis to determine the relationships of Paederus (GnathoPaederus) and related subgenera, as a basis for a revision of the subgenus, and as an attempt to provide a better framework for future taxonomic studies on the group as a whole. The analysis was based on 66 adult morphological characters for 30 ingroup taxa, including all six species of P. (GnathoPaederus). The results show that P. (GnathoPaederus) and P. (Paederus), and the genera MegaloPaederus, PachyPaederus and Paederidus are monophyletic, and that P. (EoPaederus) and P. (HarpoPaederus) are paraphylyetic. However, our analysis did not offer a robust solution to relationships among other clades within Paederus s.l. although it seems clear that Paederus s.l. is not monophyletic with respect to the above genera. The monophyly of P. (GnathoPaederus) is supported by the mandibular basal medial tooth having two cuspids separated dorsoventrally. Based largely on this character state, the definition of the subgenus is refined; six species are recognized, including two new species described from China as follows: P. (G.) daozhenensis, sp. nov. from Guizhou, and P. (G.) jilongensis, sp. nov. from Xizang; three species, P. bursavacua Willers, P. yunnanensis Willers and P. solodovnikovi Willers, are newly assigned to the subgenus according to a revised subgeneric definition. New morphological characters including important secondary sexual characters and sexual dimorphism are described and male genitalia are illustrated for the first time for the type species of the subgenus, P. (G.) szechuanus (Chapin). A key to the six species is presented and the distribution of each species is documented and discussed.
Al Munawir - One of the best experts on this subject based on the ideXlab platform.
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Efektivitas Chlorhexidine sebagai Inhibitor MMP-2 dan MMP-9 dalam Proses Dermonekrosis Akibat Racun Kumbang Tomcat (Paederus sp.) (The Effectiveness of Chlorhexidine as MMP-2 and MMP-9 inhibitor in Dermonecrotic Process due to Rove Beetles Toxin (Pae
2017Co-Authors: Putri Erlinda Kusumaningarum, Al MunawirAbstract:Paederus dermatitis is dermonecrotic condition caused by Rove beetles (Paederus sp.). Paederin toxin come from endosymbiotic between rove beetles and Pseudomonas aeruginosa and can produces MMP-2 and MMP-9. Chlorhexidine is expected to be alternative therapy and prevention of dermatitis Paederus due to it's MMP inhibitor and bacteriostatic effect. The study aimed to investigated the effectivity of chlorhexidine as MMP-2 and MMP-9 inhibitor in dermonecrotic process due to rove beetles toxin. Research groups consisted of negative control (paederin toxin), treatment 1 (paederin toxin + chlorhexidine 0,012%), treatment 2 (paederin toxin + chlorhexidine 0,06%), treatment 3 (paederin toxin + chlorhexidine 0,3%), and normal control (aquadest). As much as 9,3 µg paederin toxin and chlorhexidine are injected to the well of 8% acrylamide gel containing gelatin. Measuring of band density using ImageJ showed a decreasing of MMP-2 and MMP-9 band density. Negative control group was considered to have 1 of relative optical density. The result showed that chlorhexidine 0,06% can inhibits 21,6% MMP-2 activities and at 0,3% can inhibits 16,4% MMP-9 activities. One way ANOVA test show different significantly between negative control and treatment group (p
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Efektivitas Chlorhexidine sebagai Inhibitor MMP-2 dan MMP-9 dalam Proses Dermonekrosis Akibat Racun Kumbang Tomcat (Paederus sp.) (The Effectiveness of Chlorhexidine as MMP-2 and MMP-9 inhibitor in Dermonecrotic Process due to Rove Beetles Toxin (
'UPT Penerbitan Universitas Jember', 2017Co-Authors: Kusumaningarum, Putri Erlinda, Al MunawirAbstract:Paederus dermatitis is dermonecrotic condition caused by Rove beetles (Paederus sp.). Paederin toxin come from endosymbiotic between rove beetles and Pseudomonas aeruginosa and can produces MMP-2 and MMP-9. Chlorhexidine is expected to be alternative therapy and prevention of dermatitis Paederus due to it's MMP inhibitor and bacteriostatic effect. The study aimed to investigated the effectivity of chlorhexidine as MMP-2 and MMP-9 inhibitor in dermonecrotic process due to rove beetles toxin. Research groups consisted of negative control (paederin toxin), treatment 1 (paederin toxin + chlorhexidine 0,012%), treatment 2 (paederin toxin + chlorhexidine 0,06%), treatment 3 (paederin toxin + chlorhexidine 0,3%), and normal control (aquadest). As much as 9,3 µg paederin toxin and chlorhexidine are injected to the well of 8% acrylamide gel containing gelatin. Measuring of band density using ImageJ showed a decreasing of MMP-2 and MMP-9 band density. Negative control group was considered to have 1 of relative optical density. The result showed that chlorhexidine 0,06% can inhibits 21,6% MMP-2 activities and at 0,3% can inhibits 16,4% MMP-9 activities. One way ANOVA test show different significantly between negative control and treatment group (p<0,05). In conclusion chlorhexidine has potency as MMP-2 and MMP-9 inhibitor in dermonecrotic process due to Rove Beetles toxin. Keywords: Rove beetles(Paederus sp.), dermonrcrotic, MMP-2, MMP-9, chlorhexidin
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Pengaruh Pemberian Gel Doksisiklin terhadap Jumlah Fibroblas pada Proses Penyembuhan Dermatitis Paederus akibat Racun Kumbang Tomcat (Paederus sp.) pada Mencit (The Effect of Doxycycline Gel on The Number of Fibroblast in Paederus Dermatitis Hea
UPT Penerbitan Universitas Jember, 2016Co-Authors: Chasya, Silvi Ahmada, Al Munawir, Sulistyaningsih ErmaAbstract:Paederus dermatitis caused by rove beetle makes the tissue damage called dermonecrosis. The MMP on pederin toxins from the symbiosis of rove beetle (Paederus sp.) and Pseudomonas aeruginosa is supposed can delay the wound healing process. Doxycycline gel as a MMP inhibitor is believed can accelerate the healing process. The purpose of this study was to determine the effect of doxycycline gel on the healing process of Paederus dermatitis by observing the number of fibroblasts as an indicator. This study used 40 mice, were divided into four major groups, those were normal control group, the negative control, treatment groups with doxycycline gel 1% and 5%. Termination was performed on days 1, 3, 5, 7, and 15. Data was obtained by calculating the number of fibroblasts per field of view, then processed in ImageJ and tested statistically with comparation test of One Way Anova. The average number of fibroblasts per field of view in treatment groups was higher. The peak occurred on day 7 and decrease on day 15. It indicated that the topical administration of doxycycline gel on Paederus dermatitis can accelerate healing process, showed by the increasing in average number of fibroblasts per field of view. Keywords: doxycycline gel, fibroblast, Paederus dermatiti
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Pengaruh Pemberian Gel Doksisiklin terhadap Jumlah Fibroblas pada Proses Penyembuhan Dermatitis Paederus akibat Racun Kumbang Tomcat (Paederus sp.) pada Mencit (The Effect of Doxycycline Gel on The Number of Fibroblast in Paederus Dermatitis Healing
2016Co-Authors: Silvi Ahmada Chasya, Al Munawir, Erma SulistyaningsihAbstract:Abstrak Paederus dermatitis caused by rove beetle makes the tissue damage called dermonecrosis. The MMP on pederin toxins from the symbiosis of rove beetle (Paederus sp.) and Pseudomonas aeruginosa is supposed can delay the wound healing process. Doxycycline gel as a MMP inhibitor is believed can accelerate the healing process. The purpose of this study was to determine the effect of doxycycline gel on the healing process of Paederus dermatitis by observing the number of fibroblasts as an indicator. This study used 40 mice, were divided into four major groups, those were normal control group, the negative control, treatment groups with doxycycline gel 1% and 5%. Termination was performed on days 1, 3, 5, 7, and 15. Data was obtained by calculating the number of fibroblasts per field of view, then processed in ImageJ and tested statistically with comparation test of One Way Anova. The average number of fibroblasts per field of view in treatment groups was higher. The peak occurred on day 7 and decrease on day 15. It indicated that the topical administration of doxycycline gel on Paederus dermatitis can accelerate healing process, showed by the increasing in average number of fibroblasts per field of view.
Francinaldo Soares Silva - One of the best experts on this subject based on the ideXlab platform.
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Seasonal Abundance and the Effect of Light Trap Height on the Captures of the Vesicating Beetles of the Genus Paederus (Coleoptera: Staphylinidae) in Brazil
Entomological News, 2017Co-Authors: Francinaldo Soares Silva, Shelre Emile Pereira Duarte Lobo, Apoliana Araújo Da SilvaAbstract:ABSTRACT: To determine the seasonal abundance of the medically important rove beetles of the genus Paederus in northeastern Brazil and the influence of trap height on trapping efficiency, the insects were collected one night per week during 2015 in blacklight traps set at three different heights (0 m, 3 m, 6 m) in urban and periurban areas of northeastern Brazil. A total of 255 specimens of Paederus species were collected, mostly during June followed by July, showing one peak of abundance. Trap height had a significant effect on overall trap catch, with more caught in the traps hung at 6 m than the other heights. These findings demonstrate that trap height must be considered in developing a trap system for monitoring Paederus. People must be aware of the phototaxis of Paederus and avoid being beneath or beside light sources at the peak periods of abundance of these beetles.
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The Influence of Weather and Lunar Phases on the Flight Activity of Paederus Rove Beetles (Coleoptera: Staphylinidae)
Environmental entomology, 2015Co-Authors: Francinaldo Soares Silva, Shelre Emile Pereira Duarte Lobo, D. C. B. Lima, Jefferson Mesquita Brito, Benedita Maria Costa-netaAbstract:Despite the medical importance of Paederus beetles, no studies have studied the influence of the abiotic factors on the flight activity and nighttime dispersal of these insects in Brazil. Therefore, the influence of both climatic factors and moon phase on black-light catches of Paederus rove beetles was investigated. Paederus beetles were attracted to a black light source hourly from 1800 to 0600 hours, and data on weather conditions as well as moon phase data were taken for every sampling date. Overall, 543 individuals of Paederus beetles belonging to four species were captured: P. protensus, P. columbinus, P. brasiliensis, and P. mutans. Paederus beetles were mostly active in the warmest parts of the studied nights. Variations in nighttime temperature, relative humidity, wind speed, cloud cover, and moon phases appear not to affect Paederus flight. The diurnal temperature was observed to affect the night hourly dispersal of Paederus rove beetles as well as their distribution pattern during the entire period of study. The true environmental condition responsible for Paederus beetles seasonal pattern and daily night dispersal in northeastern Brazil were the annual moisture and drought cycles and the diurnal maximum temperatures, respectively. Significant trap catches were observed in the earliest hours after sunset (1800-2100), and people must be aware of this fact, as it can notably increase the risk of acquiring linearis dermatitis from the contact with large numbers of active Paederus.
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Abundance and Night Hourly Dispersal of the Vesicating Beetles of the Genus Paederus (Coleoptera: Staphylinidae) Attracted to Fluorescent, Incandescent, and Black Light Sources in the Brazilian Savanna
Journal of medical entomology, 2015Co-Authors: D. C. B. Lima, A. A. V. Costa, Francinaldo Soares SilvaAbstract:Paederus beetles are cosmopolitan medically important insects that cause dermatitis linearis to humans. In Brazil, despite the medical importance of these beetles, no studies focusing directly on the abundance and ecological features of harmful species exist. Therefore, this study aims at determining the abundance and the nocturnal hourly dispersal of Paederus species attracted to fluorescent, incandescent, and black light sources in the Brazilian savanna. Paederus species were captured from May to September for three consecutive years, between 2011 and 2013. The specimens were caught hourly, from 1800 to 0600 hours. Paederus beetles were attracted to incandescent, fluorescent, and black light lamps as light sources. A total of 959 individuals of five species were collected. The collected species were Paederus protensus Sharp (59.85%), Paederus columbinus Laporte de Castelnau (29.20%), Paederus mutans Sharp (7.09%), Paederus brasiliensis Erichson (3.34%), and Paederus ferus Erichson (0.52%). The black light was the most attractive source, and the darkest collecting point was the most representative for the number of individuals. The lowest catches were captured at full moon, and the highest catches were between 2200 and 0100 hours. Future investigations are needed to better understand the role of night temperature and soil humidity affecting the seasonal growth of Paederus beetle populations of northeastern Brazil.
Rupert L. L. Kellner - One of the best experts on this subject based on the ideXlab platform.
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Interspecific transmission of Paederus endosymbionts: relationship to the genetic divergence among the bacteria associated with pederin biosynthesis
Chemoecology, 2002Co-Authors: Rupert L. L. KellnerAbstract:Endosymbiotic bacteria implicated in pederin production of Paederus (+)-females (Coleoptera: Staphylinidae) can be transmitted horizontally within and less frequently among the three species analyzed (P. melanurus, P. riparius, P. sabaeus). The 16S rDNA isolated from (+)-females reveals closely related bacterial sequences in the three species as well as in Paederus fuscipes and Paederidus ruficollis. This confirms the association of the undescribed endosymbiont and pederin biosynthesis in 5 of the 13 species that have been shown to contain the substance. In spite of the high sequence identities (> 99.5%), which suggest one species of endosymbiont, some of the heterospecific hosts were incompatible. This indicates adaptation and specific preferences of the endosymbiont for their natural host.
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Molecular identification of an endosymbiotic bacterium associated with pederin biosynthesis in Paederus sabaeus (Coleoptera: Staphylinidae).
Insect biochemistry and molecular biology, 2002Co-Authors: Rupert L. L. KellnerAbstract:Abstract Biosynthesis of the structurally complex hemolymph toxin pederin is an eminent character of Paederus females. For that capability, however, they rely on endosymbiotic bacteria that are lacking in aposymbiotic females. The bacterial inhabitants of the two phenotypes in Paederus sabaeus are evaluated in a PCR-based analysis of 16S rDNA. A certain fragment, which is not found in aposymbiotic females, is highly dominant in the other, biosynthesizing females and thus identifies the endosymbiont. Its DNA sequence reveals a member of the γ subdivision of the Proteobacteria that is clustered within the genus Pseudomonas (sensu stricto) as it is most closely related to Pseudomonas aeruginosa. These bacteria appear as the hypothesized common producers of pederin and the pederin family of analogs from marine sponges.
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Differential efficacy of toxic pederin in deterring potential arthropod predators of Paederus (Coleoptera: Staphylinidae) offspring
Oecologia, 1996Co-Authors: Rupert L. L. Kellner, Konrat DettnerAbstract:This study investigates the effects of pederin, a hemolymph toxin that is accumulated in the eggs of most Paederus females, on potential arthropod predators of the offspring of P. fuscipes and P. riparius . Insects generally do not respond to pederin present in the prey. Paederus larvae are sufficiently agile to escape from these predators by running away, and the eggs are hidden by the females. Unlike insects, (wolf) spiders are deterred by prey with pederin. They turn away from larvae they have already captured and exhibit cleansing behavior. Larvae containing pederin survive the attacks of spiders without damage, whereas larvae descended from females that do not transfer pederin into their eggs are often killed and eaten. In the case of sudden attacks by spiders, the larvae have no chance of escape. Their survival thus depends on chemical defense. These investigations show for the first time why pederin might be of considerable importance for Paederus in the field.
Konrad Dettner - One of the best experts on this subject based on the ideXlab platform.
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Novel oligonucleotide probes for in situ detection of pederin-producing endosymbionts of Paederus riparius rove beetles (Coleoptera: Staphylinidae)
FEMS microbiology letters, 2011Co-Authors: Matthias Kador, Marcus A. Horn, Konrad DettnerAbstract:Bacterial endosymbionts from female Paederus rove beetles are hitherto uncultured, phylogenetically related to Pseudomonas sp., and produce the polyketide pederin, which exhibits strong cytotoxic effects and antitumoral activities. The location of such endosymbionts inside beetles and on beetles' eggs is hypothesized based on indirect evidence rather than elucidated. Thus, an endosymbiont-specific and a competitor oligonucleotide probe (Cy3-labelled PAE444 and unlabelled cPAE444, respectively) were designed and utilized for FISH with semi-thin sections of Paederus riparius eggs. Cy3-PAE444-positive cells were densely packed and covered the whole eggshell. Hundred percent of EUB338-Mix-positive total bacterial cells were PAE444 positive, indicating a biofilm dominated by Paederus endosymbionts. Analysis of different egg deposition stadiums by electron microscopy and pks (polyketide synthase gene, a structural gene associated with pederin biosynthesis)-PCR supported results obtained by FISH and revealed that the endosymbiont-containing layer is applied to the eggshell inside the efferent duct. These findings suggest that P. riparius endosymbionts are located inside unknown structures of the female genitalia, which allow for a well-regulated release of endosymbionts during oviposition. The novel oligonucleotide probes developed in this study will facilitate (1) the identification of symbiont-containing structures within genitalia of their beetle hosts and (2) directed cultivation approaches in the future.
