Pub Date : 2018-12-01DOI: 10.21608/ajesa.2008.164281
A. Elhalawany
A new eriophyoid mite species, Heterotergum zaheri sp. nov. from Ziziphus spina-christi (L.) Desf (Rhamnaceae) is described and illustrated. This mite is vagrant in the tender apical shoots (between hairs) and on the lower surface of young leaves. It causes no apparent damage. In addition, a supplementary description of Vittacus bougainvilleae (Keifer, 1959) comb. nov. (transferred from Phyllocoptes), is provided; it is recorded for the first time in Egypt, infesting Bougainvillea glabra Choisy (Nyctaginaceae). Moreover, Aculops guajavae Abou-Awad, Al-Azzazy & Afia, 2016, which causes rust on terminal leaves of Psidium guajava L. (Myrtaceae), is set as a junior synonym of Tegolophus guavae (Boczek, 1960) and redescribed.
一新种棘叶螨(Ziziphus spina-christi)(鼠李科)描述和说明。这种螨在幼嫩的顶端芽(在毛之间)和幼嫩的叶子的下表面上游荡。它不会造成明显的损害。此外，补充描述了Vittacus bougainvilleae (Keifer, 1959)梳子。11月(从Phyllocoptes转移)，提供;在埃及首次记录，侵染九重葛(九重葛科)。此外，将引起番石榴顶叶锈病的aclops guajavae about - awad, al - azazy & Afia, 2016，作为Tegolophus guavae的初级同义词(Boczek, 1960)进行了重新描述。
{"title":"A New Species, New Synonymy and a New Record of Eriophyoid Mites (Acari: Eriophyidae), From Egypt","authors":"A. Elhalawany","doi":"10.21608/ajesa.2008.164281","DOIUrl":"https://doi.org/10.21608/ajesa.2008.164281","url":null,"abstract":"A new eriophyoid mite species, Heterotergum zaheri sp. nov. from Ziziphus spina-christi (L.) Desf (Rhamnaceae) is described and illustrated. This mite is vagrant in the tender apical shoots (between hairs) and on the lower surface of young leaves. It causes no apparent damage. In addition, a supplementary description of Vittacus bougainvilleae (Keifer, 1959) comb. nov. (transferred from Phyllocoptes), is provided; it is recorded for the first time in Egypt, infesting Bougainvillea glabra Choisy (Nyctaginaceae). Moreover, Aculops guajavae Abou-Awad, Al-Azzazy & Afia, 2016, which causes rust on terminal leaves of Psidium guajava L. (Myrtaceae), is set as a junior synonym of Tegolophus guavae (Boczek, 1960) and redescribed.","PeriodicalId":298155,"journal":{"name":"Acarines: Journal of the Egyptian Society of Acarology","volume":"11 1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133864978","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2018-12-01DOI: 10.21608/ajesa.2008.164292
H. El-Gepaly, G. Sallam, A. Mohamed, S. Abdel-Aziz
An update of the spider species associated with the most cultivated crops in Shandaweel district, Sohag Governorate, Egypt, with a focus on spider’s incidence in dominant and stable habitats in the district; weeds, hlafa grass, citrus trees and ornamental plants during 2016 and 2017 years were illustrated. 18 families, 27 genera and 21 species were identified from 951 individuals (471 males & 480 females) and 2057 immature with total numbers of 3003 individuals during the study period. Salticidae, Cheiracanthiidae and Dictynidae families were the most dominant with frequency percentage of 38.86%, 11.52 % and 10.86 % respectively. Some families identified to genus or family level only like Oecobiidae, Oxyopidae, Pisauridae and Tetragnathidae. This study was also conducted to estimate the population fluctuation of spider families in Sohag Governorate over the two successive years, 2016 and 2017. The spider families reached the highest peaks on weeds in June by 115 and 116 individuals during 2016 and 2017 years respectively, on Citrus in February by 93 and 31 individuals during 2016 and 2017 respectively, on Halfa grass in 2016 November by 99 individuals and in 2017 August by 50 individuals, finally on ornamental plants in 2016 September by 90 individuals and on July 2017 by 134 individuals. Fifteen species were recorded as a new locality record from Sohag Governorate. These species were Argiope lobata, Neoscona subfusca, Nigma conducens, Poecilochroa pugnax, Sengletus extricatus, Plexippus paykulli, Euryopis episinoides, Kochiura aulica, Steatoda erigoniformis, Theridion incanescens, Theridion melanostictum, Theridion spinitarse, Runcinia grammica, Thomisus spinifer and Uloborus walckenaerius.
{"title":"Occurrence and Abundance of Spiders in Various Agricultural Formations at Sohag Governorate, Egypt","authors":"H. El-Gepaly, G. Sallam, A. Mohamed, S. Abdel-Aziz","doi":"10.21608/ajesa.2008.164292","DOIUrl":"https://doi.org/10.21608/ajesa.2008.164292","url":null,"abstract":"An update of the spider species associated with the most cultivated crops in Shandaweel district, Sohag Governorate, Egypt, with a focus on spider’s incidence in dominant and stable habitats in the district; weeds, hlafa grass, citrus trees and ornamental plants during 2016 and 2017 years were illustrated. 18 families, 27 genera and 21 species were identified from 951 individuals (471 males & 480 females) and 2057 immature with total numbers of 3003 individuals during the study period. Salticidae, Cheiracanthiidae and Dictynidae families were the most dominant with frequency percentage of 38.86%, 11.52 % and 10.86 % respectively. Some families identified to genus or family level only like Oecobiidae, Oxyopidae, Pisauridae and Tetragnathidae. This study was also conducted to estimate the population fluctuation of spider families in Sohag Governorate over the two successive years, 2016 and 2017. The spider families reached the highest peaks on weeds in June by 115 and 116 individuals during 2016 and 2017 years respectively, on Citrus in February by 93 and 31 individuals during 2016 and 2017 respectively, on Halfa grass in 2016 November by 99 individuals and in 2017 August by 50 individuals, finally on ornamental plants in 2016 September by 90 individuals and on July 2017 by 134 individuals. Fifteen species were recorded as a new locality record from Sohag Governorate. These species were Argiope lobata, Neoscona subfusca, Nigma conducens, Poecilochroa pugnax, Sengletus extricatus, Plexippus paykulli, Euryopis episinoides, Kochiura aulica, Steatoda erigoniformis, Theridion incanescens, Theridion melanostictum, Theridion spinitarse, Runcinia grammica, Thomisus spinifer and Uloborus walckenaerius.","PeriodicalId":298155,"journal":{"name":"Acarines: Journal of the Egyptian Society of Acarology","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114574642","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2018-12-01DOI: 10.21608/ajesa.2021.4749.1007
A. Zaki, R. Abo-Shnaf
An experiment was conducted in two localities at Fayoum governorate to observe soil mites inhabiting two important medicinal and aromatic plants namely; chamomile(Matricaria chamomilla L.) and marigold (Calendula officinalis L.). Samples were collected biweekly from December 2016 to April 2017. After mite samples extraction, specimens were mounted in Hoyer’s medium on microscope slides for later examination.The results revealed the occurrence of 43 species from 36 genera and 24 families. This included four species from both families,Cunaxidae and Rhodacaridae which were recorded for the first time in Egypt. Total soil mites were 1466individuals, from which 793individuals in chamomile and 673 individuals marigold. The total number of mites collected from each cultivated system reached respectively 484 & 309 individualsin organic and conventional chamomile and 449 & 224individualsin organic and conventional marigold. From 24 families: 10 & 7 families were not found in organic and conventional chamomile, and 5 & 9 families in organic and conventional marigold. The highest numbers presented in the families Euopodidae about 175 individuals (in organic chamomile), Acaridae about 135 & 110 individuals (in conventional chamomile & marigold), 130 individuals (in organic marigold). The highest number of soil mites was presented by the families Oribatulidae and Eupodidae in chamomile,while in marigold were the families Acaridae and Oribatulidae. Shannon-Wiener "H" Indexindicated that organic marigold reached the highest value (2.31) of 30 species from 19 families,while Simpson Index, demonstrated that it recorded the lowest number of dominant species. For speciessimilarity,the community of organic almost resembled that of conventionalone by 50% in chamomile and 51.06% in marigold.
{"title":"Soil mites inhabiting chamomile and marigold plants under two different cultivations at Fayoum governorate","authors":"A. Zaki, R. Abo-Shnaf","doi":"10.21608/ajesa.2021.4749.1007","DOIUrl":"https://doi.org/10.21608/ajesa.2021.4749.1007","url":null,"abstract":"An experiment was conducted in two localities at Fayoum governorate to observe soil mites inhabiting two important medicinal and aromatic plants namely; chamomile(Matricaria chamomilla L.) and marigold (Calendula officinalis L.). Samples were collected biweekly from December 2016 to April 2017. After mite samples extraction, specimens were mounted in Hoyer’s medium on microscope slides for later examination.The results revealed the occurrence of 43 species from 36 genera and 24 families. This included four species from both families,Cunaxidae and Rhodacaridae which were recorded for the first time in Egypt. Total soil mites were 1466individuals, from which 793individuals in chamomile and 673 individuals marigold. The total number of mites collected from each cultivated system reached respectively 484 & 309 individualsin organic and conventional chamomile and 449 & 224individualsin organic and conventional marigold. From 24 families: 10 & 7 families were not found in organic and conventional chamomile, and 5 & 9 families in organic and conventional marigold. The highest numbers presented in the families Euopodidae about 175 individuals (in organic chamomile), Acaridae about 135 & 110 individuals (in conventional chamomile & marigold), 130 individuals (in organic marigold). The highest number of soil mites was presented by the families Oribatulidae and Eupodidae in chamomile,while in marigold were the families Acaridae and Oribatulidae. Shannon-Wiener \"H\" Indexindicated that organic marigold reached the highest value (2.31) of 30 species from 19 families,while Simpson Index, demonstrated that it recorded the lowest number of dominant species. For speciessimilarity,the community of organic almost resembled that of conventionalone by 50% in chamomile and 51.06% in marigold.","PeriodicalId":298155,"journal":{"name":"Acarines: Journal of the Egyptian Society of Acarology","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114245774","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2018-12-01DOI: 10.21608/ajesa.2008.164309
M. Zaher, M. Hassan, G. Sallam, Doaa Abdel Ghani
The experiment was conducted in a small greenhouse of citrus plants to know the population dynamic and the relationship between the Eutichurid spider Cheiracanthium isiacum and the occasional pest Phyllocnistis citrella. There was a statistically significant difference within three times in dominance of P. citrella. Results show that it is possible to detect P. citrella DNA in C. isiacum by using PCR technique and confirm the greenhouse experiment that there is a specific relationship between it. Cheiracanthium isiacum may be important in suppressing this pest population below economic threshold
{"title":"PCR-Technique Reveal the Potential of Cheiracanthium isiacum as a Phyllocnistis citrella Predator","authors":"M. Zaher, M. Hassan, G. Sallam, Doaa Abdel Ghani","doi":"10.21608/ajesa.2008.164309","DOIUrl":"https://doi.org/10.21608/ajesa.2008.164309","url":null,"abstract":"The experiment was conducted in a small greenhouse of citrus plants to know the population dynamic and the relationship between the Eutichurid spider Cheiracanthium isiacum and the occasional pest Phyllocnistis citrella. There was a statistically significant difference within three times in dominance of P. citrella. Results show that it is possible to detect P. citrella DNA in C. isiacum by using PCR technique and confirm the greenhouse experiment that there is a specific relationship between it. Cheiracanthium isiacum may be important in suppressing this pest population below economic threshold","PeriodicalId":298155,"journal":{"name":"Acarines: Journal of the Egyptian Society of Acarology","volume":"73 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125470731","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2018-12-01DOI: 10.21608/ajesa.2008.164306
F. Kalmosh
Assessment of the economic damage threshold (ETL) and economic injury level (EIL) of the two tetranychid Tetranychus urticae and Petrobia tritici infested wheat (Giza 168) were studied during 2016/2017 season at Sharkia and Beheira governorates. Also, the population density of both mite species were estimated. Results cleared that the values of (ETL) were less than (EIL) level. The (ETLs) values of T. urticae on wheat plants at Beheira and Sharkia (as x1 &x2 peaks results) ranged 4-4.33 and 4.33-10 individuals /leaf, while the (EIL)values ranged 4.33-5 and 10.3313.33 individuals /leaf in the two localities, respectively. In the same trend the ETLs of P.tritici on wheat plants at Sharkia and Beheira (as x1 &x2 peaks results) ranged 3.33-4.00 and 3.33 individuals. /leaf, while the EILs ranged 5-5.33 and 3.67-5.33 Individuals / leaf in the two localities, respectively. In addition, the results of population density of the two-mite species showed that, there were two peaks for each species at the two localities. Statistical analysis detected a positive insignificant correlation between the population of the two mite species and average temperature while it was insignificantly negative with average of R.H. %. The relatively high effect as partial regression (E.V. %) for tested climatic factors of 5.18% was recorded for average temperature on P.tritici at Sharkia governorate, while the relatively high multiple correlation for the two tested climatic factors together was 17.07% recorded on P. tritici at Beheira governorate.
{"title":"Population Density, Economic Threshold and Injury Levels of Tetranychus urticae and Petrobia tritici Infesting Wheat Plants at Sharkia and Beheira Governorates, Egypt","authors":"F. Kalmosh","doi":"10.21608/ajesa.2008.164306","DOIUrl":"https://doi.org/10.21608/ajesa.2008.164306","url":null,"abstract":"Assessment of the economic damage threshold (ETL) and economic injury level (EIL) of the two tetranychid Tetranychus urticae and Petrobia tritici infested wheat (Giza 168) were studied during 2016/2017 season at Sharkia and Beheira governorates. Also, the population density of both mite species were estimated. Results cleared that the values of (ETL) were less than (EIL) level. The (ETLs) values of T. urticae on wheat plants at Beheira and Sharkia (as x1 &x2 peaks results) ranged 4-4.33 and 4.33-10 individuals /leaf, while the (EIL)values ranged 4.33-5 and 10.3313.33 individuals /leaf in the two localities, respectively. In the same trend the ETLs of P.tritici on wheat plants at Sharkia and Beheira (as x1 &x2 peaks results) ranged 3.33-4.00 and 3.33 individuals. /leaf, while the EILs ranged 5-5.33 and 3.67-5.33 Individuals / leaf in the two localities, respectively. In addition, the results of population density of the two-mite species showed that, there were two peaks for each species at the two localities. Statistical analysis detected a positive insignificant correlation between the population of the two mite species and average temperature while it was insignificantly negative with average of R.H. %. The relatively high effect as partial regression (E.V. %) for tested climatic factors of 5.18% was recorded for average temperature on P.tritici at Sharkia governorate, while the relatively high multiple correlation for the two tested climatic factors together was 17.07% recorded on P. tritici at Beheira governorate.","PeriodicalId":298155,"journal":{"name":"Acarines: Journal of the Egyptian Society of Acarology","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116775621","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1900-01-01DOI: 10.21608/ajesa.2021.6029.1008
Manal S. M. Ismail, Nesrin El Basha, S. Allam
This study presents an attempt to evaluate the acaricidal activity of the two medicinal plants, Helichrysum bracteatum L. (Asteraceae) and Salvia officinalis L. (Lamiaceae) against Tetranychus urticae Koch and its predator, Stethorus gilvifrons Muls. under laboratory conditions. The ethanolic leaf extracts of H. bracteatum [HbLEEtOH70%] and S .officinalis [SoLEEtOH70%] were assessed for their direct toxicity against T. urticae and S. gilvifrons adult females. Both extracts were assessed for their effects on the egg-laying capacity, repellent and oviposition deterrent effects of the T. urticae adult females, as well as their direct effects on T. urticae eggs. The chemical characterization of both extracts was conducted to investigate their bioactive components by gas chromatography (GC-MS). Based on acute toxicity, results showed that HbLEEtOH70% displayed the highest acaricidal activity (LC50=1.27%) followed by SoLEEtOH70% (3.39%) against T. urticae adult females. Whereas, against S. gilvifrons adult females, SoLEEtOH70% was less toxic (LC50=37.06%) than HbLEEtOH70% (LC50=0.76%). Our results revealed that HbLEEtOH70% and SoLEEtOH70% had a significant effect on the egg-laying capacity of T. urticae adult females. According to the repellent index (RI), the HbLEEtOH70% and SoLEEtOH70% were classified as repellent. Both extracts revealed a potent ovicidal effect, where the egg hatching percentage was 48.75±15.38 and 45.34±11.73% for HbLEEtOH70% and SoLEEtOH70%, as compared to their control groups 98.81±0.7%, respectively. GC-MS analysis showed that phytol was the major component of HbLEEtOH70% and SoLEEtOH70%. The current study confirmed the potent acaricidal effect of H. bracteatum and S. officinalis leaf extract against T. urticae. Thus, the S. officinalis leaf extract was the safe acaricidal product suitable for use in integrated pest management strategies as it was safe for S. gilvifrons.
{"title":"Acaricidal activity and chemical characterization of Helichrysum bracteatum and Salvia officinalis leaf extracts against Tetranychus urticae and its predator, Stethorus gilvifrons (Coccinellidae)","authors":"Manal S. M. Ismail, Nesrin El Basha, S. Allam","doi":"10.21608/ajesa.2021.6029.1008","DOIUrl":"https://doi.org/10.21608/ajesa.2021.6029.1008","url":null,"abstract":"This study presents an attempt to evaluate the acaricidal activity of the two medicinal plants, Helichrysum bracteatum L. (Asteraceae) and Salvia officinalis L. (Lamiaceae) against Tetranychus urticae Koch and its predator, Stethorus gilvifrons Muls. under laboratory conditions. The ethanolic leaf extracts of H. bracteatum [HbLEEtOH70%] and S .officinalis [SoLEEtOH70%] were assessed for their direct toxicity against T. urticae and S. gilvifrons adult females. Both extracts were assessed for their effects on the egg-laying capacity, repellent and oviposition deterrent effects of the T. urticae adult females, as well as their direct effects on T. urticae eggs. The chemical characterization of both extracts was conducted to investigate their bioactive components by gas chromatography (GC-MS). Based on acute toxicity, results showed that HbLEEtOH70% displayed the highest acaricidal activity (LC50=1.27%) followed by SoLEEtOH70% (3.39%) against T. urticae adult females. Whereas, against S. gilvifrons adult females, SoLEEtOH70% was less toxic (LC50=37.06%) than HbLEEtOH70% (LC50=0.76%). Our results revealed that HbLEEtOH70% and SoLEEtOH70% had a significant effect on the egg-laying capacity of T. urticae adult females. According to the repellent index (RI), the HbLEEtOH70% and SoLEEtOH70% were classified as repellent. Both extracts revealed a potent ovicidal effect, where the egg hatching percentage was 48.75±15.38 and 45.34±11.73% for HbLEEtOH70% and SoLEEtOH70%, as compared to their control groups 98.81±0.7%, respectively. GC-MS analysis showed that phytol was the major component of HbLEEtOH70% and SoLEEtOH70%. The current study confirmed the potent acaricidal effect of H. bracteatum and S. officinalis leaf extract against T. urticae. Thus, the S. officinalis leaf extract was the safe acaricidal product suitable for use in integrated pest management strategies as it was safe for S. gilvifrons.","PeriodicalId":298155,"journal":{"name":"Acarines: Journal of the Egyptian Society of Acarology","volume":"142 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122664848","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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