Pub Date : 2021-07-20DOI: 10.21608/AJESA.2021.1984.1001
Safaa A. S. Ghorab, Manal S. M. Ismail
Field evaluation for the acaricidal activity of jatropha Jatropha curcas and castor bean oils Ricinus communis against the nymph and adult stages of the two-spotted spider mite, Tetranychus urticae on Alcea rosea L. were studied. The field trial was conducted out in May 2016 on A. rosea in the experimental farm of Faculty of Agriculture, Suez Canal University, Ismailia, Egypt. The fatty acids constituents of the two essential oils were identified by gas chromatography (GLC) analysis. The acaricidal activity of castor bean oil was recorded higher than that of jatropha oil where the total population reduction rate of jatropha oil was 74.12% for adults while it was 75.19 % for nymphs. Whereas, total population reduction rate of castor bean oil was 77.32% for adults while it was 82.91% for nymphs on A. rosea leaves. Regarding the flowers, the total population reduction rate of jatropha oil was 68.74 % for adults while it was 73.94 % for nymphs but population reduction rate of castor bean oil was 72.33% for adults while it was 76.02% for nymphs. The major constituents of fatty acids identified by using GLC analysis in jatropha and castor bean oils were erucic (44.34%) and ricinoleic acid (41.75%), respectively. The results of this study revealed that the essential oil of J. curcas and R. communis exhibited potent acaricidal activity against T. urticae which may be attributed to the presence of different bioactive compounds which may affect alone or in synergism.
{"title":"Possible acaricidal activity of Jatropha curcas and Ricinus communis seed oils on Alcea rosea","authors":"Safaa A. S. Ghorab, Manal S. M. Ismail","doi":"10.21608/AJESA.2021.1984.1001","DOIUrl":"https://doi.org/10.21608/AJESA.2021.1984.1001","url":null,"abstract":"Field evaluation for the acaricidal activity of jatropha Jatropha curcas and castor bean oils Ricinus communis against the nymph and adult stages of the two-spotted spider mite, Tetranychus urticae on Alcea rosea L. were studied. The field trial was conducted out in May 2016 on A. rosea in the experimental farm of Faculty of Agriculture, Suez Canal University, Ismailia, Egypt. The fatty acids constituents of the two essential oils were identified by gas chromatography (GLC) analysis. The acaricidal activity of castor bean oil was recorded higher than that of jatropha oil where the total population reduction rate of jatropha oil was 74.12% for adults while it was 75.19 % for nymphs. Whereas, total population reduction rate of castor bean oil was 77.32% for adults while it was 82.91% for nymphs on A. rosea leaves. Regarding the flowers, the total population reduction rate of jatropha oil was 68.74 % for adults while it was 73.94 % for nymphs but population reduction rate of castor bean oil was 72.33% for adults while it was 76.02% for nymphs. The major constituents of fatty acids identified by using GLC analysis in jatropha and castor bean oils were erucic (44.34%) and ricinoleic acid (41.75%), respectively. The results of this study revealed that the essential oil of J. curcas and R. communis exhibited potent acaricidal activity against T. urticae which may be attributed to the presence of different bioactive compounds which may affect alone or in synergism.","PeriodicalId":298155,"journal":{"name":"Acarines: Journal of the Egyptian Society of Acarology","volume":"28 1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-07-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123217137","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 : 2021-07-20DOI: 10.21608/AJESA.2021.4565.1006
A. Elhalawany
During the survey of eriophyoid mite fauna from Qalyubia and Giza governorates in Egypt from 2012 to 2017. A new eriophyoid mite species, Heterotergum zaheri sp. nov. was collected from Ziziphus spina–christi (L.) Desf (Rhamnaceae). It was 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. This is the second species in genus Heterotergum has been recorded in Egypt. A supplementary descriptions of two eriophyoid species Vittacus bougainvilleae (Keifer, 1959) comb. nov. (transferred from Phyllocoptes), was recorded for the first time in Egypt, infesting Bougainvillea glabra Choisy (Nyctaginaceae). Aculops guajavae Abou-Awad, Al-Azzazy & Afia, 2016 was assigned a senior synonym of Tegolophus guavae (Boczek, 1960) from Psidium guajava L. (Myrtaceae) which causes rust on terminal leaves, based on the presence of strong frontal lobe, opisthosoma with 3 ridges, middorsal ridge stronger than lateral ridges.
{"title":"Heterotergum zaheri (Acari: Eriophyidae), New Species From Egypt and A New Eriophyoid Record","authors":"A. Elhalawany","doi":"10.21608/AJESA.2021.4565.1006","DOIUrl":"https://doi.org/10.21608/AJESA.2021.4565.1006","url":null,"abstract":"During the survey of eriophyoid mite fauna from Qalyubia and Giza governorates in Egypt from 2012 to 2017. A new eriophyoid mite species, Heterotergum zaheri sp. nov. was collected from Ziziphus spina–christi (L.) Desf (Rhamnaceae). It was 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. This is the second species in genus Heterotergum has been recorded in Egypt. A supplementary descriptions of two eriophyoid species Vittacus bougainvilleae (Keifer, 1959) comb. nov. (transferred from Phyllocoptes), was recorded for the first time in Egypt, infesting Bougainvillea glabra Choisy (Nyctaginaceae). Aculops guajavae Abou-Awad, Al-Azzazy & Afia, 2016 was assigned a senior synonym of Tegolophus guavae (Boczek, 1960) from Psidium guajava L. (Myrtaceae) which causes rust on terminal leaves, based on the presence of strong frontal lobe, opisthosoma with 3 ridges, middorsal ridge stronger than lateral ridges.","PeriodicalId":298155,"journal":{"name":"Acarines: Journal of the Egyptian Society of Acarology","volume":"29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-07-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116337690","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 : 2021-07-20DOI: 10.21608/AJESA.2021.4029.1005
F. S. Kalmosh
Assessment of the economic damage threshold (ETLs) and economic injury levels (EILs) of Tetranychus urticae and Petrobia tritici infested wheat (Giza 168) were studied at Sharkia and Beheira Governorates, during 2016/2017 season. Also, the population density of both mite species was achieved. Results cleared that the values of (ETLs) were less than (EILs) levels. 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 (EILs)values ranged 4.33-5 and 10.33- 13.33 Individuals /leaf for 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 for 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 study localities.The results of statistical analysis detected positive insignificant correlation was observed between the population of the two mite species and average temperature while it was negative and insignificant 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":"Economic threshold, injury levels and population density of Tetranychus urticae and Petrobia tritici infesting Wheat plants at Sharkia and Beheira Governorates, Egypt","authors":"F. S. Kalmosh","doi":"10.21608/AJESA.2021.4029.1005","DOIUrl":"https://doi.org/10.21608/AJESA.2021.4029.1005","url":null,"abstract":"Assessment of the economic damage threshold (ETLs) and economic injury levels (EILs) of Tetranychus urticae and Petrobia tritici infested wheat (Giza 168) were studied at Sharkia and Beheira Governorates, during 2016/2017 season. Also, the population density of both mite species was achieved. Results cleared that the values of (ETLs) were less than (EILs) levels. 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 (EILs)values ranged 4.33-5 and 10.33- 13.33 Individuals /leaf for 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 for 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 study localities.The results of statistical analysis detected positive insignificant correlation was observed between the population of the two mite species and average temperature while it was negative and insignificant 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":"87 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-07-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128845782","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 : 2021-07-20DOI: 10.21608/ajesa.2021.4173.1003
H. Heikal
{"title":"Occurrence and Population Dynamics of Mites Associated With Citrus Trees In Menoufia Governorate","authors":"H. Heikal","doi":"10.21608/ajesa.2021.4173.1003","DOIUrl":"https://doi.org/10.21608/ajesa.2021.4173.1003","url":null,"abstract":"","PeriodicalId":298155,"journal":{"name":"Acarines: Journal of the Egyptian Society of Acarology","volume":"48 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-07-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131759596","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 : 2021-04-12DOI: 10.21608/AJESA.2021.163522
Amal H. M. Romeih, M. Hassan, M. Rizk, Rheam I. Abo-Shnaf
A survey of mites associated with 25 aromatic and medicinal plant species of 13 families i.e., Araliaceae, Caricaceae, Chenopodiaceae, Compositae, Ephorbiaceae, Lamiaceae, Lauraceae, Liliacaea, Meliaacae, Myrtacae, Papaveraceae, Rutaceae and Umbelliferae; addition to 75 ornamental plant species belonging to nine groups (cut-flower rose, flowering bulbs, flowering potted plants, ornamental trees, shrubs, vines, fences, ornamental: palm trees and cut flowers) were carried out for one year. Thirty-eight families including 92 genera and lt68 mite species were collected from these plant species at Giza and Fayoum Governorates. One new species of the family Phytoseiidae from genus Euseius was recorded. Twenty-four species belonging to different families; Acaridae· (seven species) Parasitidae (six species), five species to each family Cunaxidae and Cheyletidae, and one species to the family. Tarsoaemidae were firstly recorded.
{"title":"Egyptian Checklist of Mites from Aromatic, Medicinal and Ornamental Plants","authors":"Amal H. M. Romeih, M. Hassan, M. Rizk, Rheam I. Abo-Shnaf","doi":"10.21608/AJESA.2021.163522","DOIUrl":"https://doi.org/10.21608/AJESA.2021.163522","url":null,"abstract":"A survey of mites associated with 25 aromatic and medicinal plant species of 13 families i.e., Araliaceae, Caricaceae, Chenopodiaceae, Compositae, Ephorbiaceae, Lamiaceae, Lauraceae, Liliacaea, Meliaacae, Myrtacae, Papaveraceae, Rutaceae and Umbelliferae; addition to 75 ornamental plant species belonging to nine groups (cut-flower rose, flowering bulbs, flowering potted plants, ornamental trees, shrubs, vines, fences, ornamental: palm trees and cut flowers) were carried out for one year. Thirty-eight families including 92 genera and lt68 mite species were collected from these plant species at Giza and Fayoum Governorates. One new species of the family Phytoseiidae from genus Euseius was recorded. Twenty-four species belonging to different families; Acaridae· (seven species) Parasitidae (six species), five species to each family Cunaxidae and Cheyletidae, and one species to the family. Tarsoaemidae were firstly recorded.","PeriodicalId":298155,"journal":{"name":"Acarines: Journal of the Egyptian Society of Acarology","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-04-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132438513","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 : 2020-12-01DOI: 10.21608/ajesa.2020.180887
Rania A. El-Nahas, A. Fouly, A. A. Yousef, A. M. Khalil
The predatory mite, Neoseiulus californicus (McGregor) (Acari: Phytoseiidae) is an important biological control agent of the two-spotted spider mite, Tetranychus urticae Koch (Acari: Tetranychidae) infesting many crops worldwide. Biology, life table parameters and thermal requirements of N. californicus were evaluated in laboratory at 20, 27, 30±2oC and 70±5% RH. Spider mite, T. urticae is an important pest of soybean crop in Egypt. The duration of the immature stages of N. californicus ranged from 4.22 to 7.35 days for female and from 3.80 to 7.10 days for male when they were kept at 20 and 30°C, respectively. The mean generation time (TG) decreased with increasing temperature from 19.48 days to 12.93 days at 20 to 30°C, respectively. The intrinsic rate of increase (rm) and finite rate of increase (λ) were highest at 27 and 30 oC. The highest total consumption rate of prey was 223.4 individuals when adult female fed on T. urticae motile stages at 30 oC, while the lowest rate was 162.60 individuals at 20 oC during the whole life span. Minimum developmental thresholds (t0) of egg, larva, protonymph, deutonymph and total immature stages of N. californicus female averaged 13.20, 12.75, 3.29, 0.0 and 6.66 oC, respectively. The predatory female of N. californicus required 500 DDUs to reach adulthood. Therefore, a thermal range of 27oC was the most suitable condition to rear the target predatory mite.
{"title":"Thermal requirements and life table parameters of the predatory mite, Neoseiulus californicus (McGregor) fed on Tetranychus urticae Koch (Acari: Phytoseiidae: Tetranychidae)","authors":"Rania A. El-Nahas, A. Fouly, A. A. Yousef, A. M. Khalil","doi":"10.21608/ajesa.2020.180887","DOIUrl":"https://doi.org/10.21608/ajesa.2020.180887","url":null,"abstract":"The predatory mite, Neoseiulus californicus (McGregor) (Acari: Phytoseiidae) is an important biological control agent of the two-spotted spider mite, Tetranychus urticae Koch (Acari: Tetranychidae) infesting many crops worldwide. Biology, life table parameters and thermal requirements of N. californicus were evaluated in laboratory at 20, 27, 30±2oC and 70±5% RH. Spider mite, T. urticae is an important pest of soybean crop in Egypt. The duration of the immature stages of N. californicus ranged from 4.22 to 7.35 days for female and from 3.80 to 7.10 days for male when they were kept at 20 and 30°C, respectively. The mean generation time (TG) decreased with increasing temperature from 19.48 days to 12.93 days at 20 to 30°C, respectively. The intrinsic rate of increase (rm) and finite rate of increase (λ) were highest at 27 and 30 oC. The highest total consumption rate of prey was 223.4 individuals when adult female fed on T. urticae motile stages at 30 oC, while the lowest rate was 162.60 individuals at 20 oC during the whole life span. Minimum developmental thresholds (t0) of egg, larva, protonymph, deutonymph and total immature stages of N. californicus female averaged 13.20, 12.75, 3.29, 0.0 and 6.66 oC, respectively. The predatory female of N. californicus required 500 DDUs to reach adulthood. Therefore, a thermal range of 27oC was the most suitable condition to rear the target predatory mite.","PeriodicalId":298155,"journal":{"name":"Acarines: Journal of the Egyptian Society of Acarology","volume":"51 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121579009","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 : 2020-12-01DOI: 10.21608/ajesa.2020.180881
S. Eraky, A. Mohamed, Seham A. Ezz El-Dein, H. El-Gepaly
A new species, Acotyledon hookisetoses sp. nov. (Acari: Acaridae), collected from the stock colony of Sitotroga cerealella reared on wheat grains, is described, and illustrated from adults and deutonymphs. Sex-specific morphological differences at the deutonymphal stage are reported and discussed.
{"title":"Description of a new species of Acotyledon Oudemans (Acari: Acaridae) feeding on eggs of the Sitotroga cerealella (Olivier) (Lepidoptera: Gelechiidae), with a method for determining sex in deutonymphal stages","authors":"S. Eraky, A. Mohamed, Seham A. Ezz El-Dein, H. El-Gepaly","doi":"10.21608/ajesa.2020.180881","DOIUrl":"https://doi.org/10.21608/ajesa.2020.180881","url":null,"abstract":"A new species, Acotyledon hookisetoses sp. nov. (Acari: Acaridae), collected from the stock colony of Sitotroga cerealella reared on wheat grains, is described, and illustrated from adults and deutonymphs. Sex-specific morphological differences at the deutonymphal stage are reported and discussed.","PeriodicalId":298155,"journal":{"name":"Acarines: Journal of the Egyptian Society of Acarology","volume":"29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125751109","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 : 2019-12-01DOI: 10.21608/ajesa.2019.164157
A. Zaki, A. Aly
A field experiment was conducted on onion plants, Giza 20 at Ibshway, Fayoum governorate, Egypt in winter season (2017-2018). Compost manure was applied in the main plots and nitrogen and Phosphors levels were applied in the sub plots to study the interaction effects on the biodiversity of spider, soil animals and the yield of onion. Spiders and soil animals were sampled using pitfall traps. Community composition of collected spiders was determined using the Shannon-Wiener and Simpson Indices of diversity. A total of 1080 spiders included 9 families, 22 genera, 22 species and 704 spiders included 8 families, 20 genera, and 20 species were collected in compost manure treatment and zero compost respectively. According to Simpson, Family Laycosidae recorded the highest number of spiders. Sorensen Quotient of Similarity between compost compared zero compost concluded that 80%, of similarity. A total of 8097 individuals in compost manure and 6506 individuals in Zero compost system were counted from 9 observations on onion plants from seedling to maturity by using pitfall trap. Statistical analysis for spider, soil fauna, yield and various parameters were
{"title":"Diversity and Abundance of Spider and Other Soil Animals as Influenced by Fertilization and Their Effect on Yield of Onion at Fayoum Governorate, Egypt","authors":"A. Zaki, A. Aly","doi":"10.21608/ajesa.2019.164157","DOIUrl":"https://doi.org/10.21608/ajesa.2019.164157","url":null,"abstract":"A field experiment was conducted on onion plants, Giza 20 at Ibshway, Fayoum governorate, Egypt in winter season (2017-2018). Compost manure was applied in the main plots and nitrogen and Phosphors levels were applied in the sub plots to study the interaction effects on the biodiversity of spider, soil animals and the yield of onion. Spiders and soil animals were sampled using pitfall traps. Community composition of collected spiders was determined using the Shannon-Wiener and Simpson Indices of diversity. A total of 1080 spiders included 9 families, 22 genera, 22 species and 704 spiders included 8 families, 20 genera, and 20 species were collected in compost manure treatment and zero compost respectively. According to Simpson, Family Laycosidae recorded the highest number of spiders. Sorensen Quotient of Similarity between compost compared zero compost concluded that 80%, of similarity. A total of 8097 individuals in compost manure and 6506 individuals in Zero compost system were counted from 9 observations on onion plants from seedling to maturity by using pitfall trap. Statistical analysis for spider, soil fauna, yield and various parameters were","PeriodicalId":298155,"journal":{"name":"Acarines: Journal of the Egyptian Society of Acarology","volume":"72 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127344288","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 : 2019-12-01DOI: 10.21608/ajesa.2019.164153
A. Abdelgayed, N. Abd El-Wahed, A. Ali, S. Eraky
Relationships between the biotic potential of pomegranate false spider mite, Tenuipalpus punicae Pritchard & Baker, 1958 and temperature was studied at constant temperature conditions of 20 35oC. Optimum temperatures range for T. punicae was 30 35°C. The shortest Pre-oviposition period, the greatest egg-laying capacity and immature stages development, optimum conditions were noticed at 35oC followed by 30oC. Complete age-specific fecundity schedules and life table parameters were computed from these data for each of four temperatures. The shortest developmental duration reached was 12.56 & 9.63 days for female and male at 35oC. The highest total mean fecundity rate was 13.13 eggs/female with a daily rate of 1.59 eggs/female/day was at 30oC. The thermal constants (K) were 56.82, 100.80, 83.93, 122.23, 345.97, 419.22, 308.60 and 648.66 (DDs) for the previous stages as physiological times required for this species phenomena. The maximum values of intrinsic rate of increase (rm) and the finite rate of increase (λ) was obtained at 35oC (i.e. 0.120 and 1.12 individuals/female/day). The gross reproductive rate (GRR) was the highest at 35oC as 16.4 eggs/female/generation. The shortest time for population density doubling (DT) was 5.77 days at 35oC.
{"title":"Biological Aspects, Thermal Requirements and Life Table Parameters of Tenuipalpus Punicae Pritchard & Baker, 1958 (Acari: Tenuipalpidae) on Pomegranate Over Different Temperatures in Assiut, Egypt","authors":"A. Abdelgayed, N. Abd El-Wahed, A. Ali, S. Eraky","doi":"10.21608/ajesa.2019.164153","DOIUrl":"https://doi.org/10.21608/ajesa.2019.164153","url":null,"abstract":"Relationships between the biotic potential of pomegranate false spider mite, Tenuipalpus punicae Pritchard & Baker, 1958 and temperature was studied at constant temperature conditions of 20 35oC. Optimum temperatures range for T. punicae was 30 35°C. The shortest Pre-oviposition period, the greatest egg-laying capacity and immature stages development, optimum conditions were noticed at 35oC followed by 30oC. Complete age-specific fecundity schedules and life table parameters were computed from these data for each of four temperatures. The shortest developmental duration reached was 12.56 & 9.63 days for female and male at 35oC. The highest total mean fecundity rate was 13.13 eggs/female with a daily rate of 1.59 eggs/female/day was at 30oC. The thermal constants (K) were 56.82, 100.80, 83.93, 122.23, 345.97, 419.22, 308.60 and 648.66 (DDs) for the previous stages as physiological times required for this species phenomena. The maximum values of intrinsic rate of increase (rm) and the finite rate of increase (λ) was obtained at 35oC (i.e. 0.120 and 1.12 individuals/female/day). The gross reproductive rate (GRR) was the highest at 35oC as 16.4 eggs/female/generation. The shortest time for population density doubling (DT) was 5.77 days at 35oC.","PeriodicalId":298155,"journal":{"name":"Acarines: Journal of the Egyptian Society of Acarology","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130743475","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 : 2019-12-01DOI: 10.21608/ajesa.2019.164150
S. Eraky, S. Mohamed, Y. Omar, A. Farghal, A. Mohamed, W. Haridy
A new species of mite, Acarophenax dominicai was described and illustrated based on male and phoretic female. The new species was reported parasitizing of lesser grain borer, Rhyzopertha dominica (F.) eggs infested wheat grains. Adult females of this species most closely resemble those of Acarophenax lacunatus Cross and Krantz (1964). The new species is separable from A. lacunatus by its smaller size, ornamentations on dorsum and venter, the shape of tergite margins; aggenital plate; gnathosoma, as well as the chaetotaxy of legs I-IV. Holotype female and five paratype females; holotype male and four paratype males, were deposited in the Acari collection of Plant Protection Department, Faculty of Agriculture, Assiut University, Egypt. Some biological aspects are provided. Female mite produces one close d eggs capsule and remains alive until the capsule comes out. Female mites settle on the dorsum of host female during the pre-oviposition period, then leave the host in the period of oviposition and feed on egg’s contents. Male mites are ephemeral and may not emerge from the gravid-female. Mite sex ratios are highly skewed, with an average of 19.7 ± 0.3: 0.77 ± 0.23 females to males (mite progeny/eggs capsule/gravid-female). When females reach adulthood, mating take place either within the gravid-female (if present) or with a male which has previously emerged from another eggs capsule. Male mites are not parasitic and had poor locomotion abilities.
{"title":"Description and some biological aspects of Acarophenax dominicai n. sp. (Acari: Heterostigmata: Acarophenacidae), an egg parasite of lesser grain borer, Rhyzopertha dominica (F.) (Coleoptera: Bostrichidae)","authors":"S. Eraky, S. Mohamed, Y. Omar, A. Farghal, A. Mohamed, W. Haridy","doi":"10.21608/ajesa.2019.164150","DOIUrl":"https://doi.org/10.21608/ajesa.2019.164150","url":null,"abstract":"A new species of mite, Acarophenax dominicai was described and illustrated based on male and phoretic female. The new species was reported parasitizing of lesser grain borer, Rhyzopertha dominica (F.) eggs infested wheat grains. Adult females of this species most closely resemble those of Acarophenax lacunatus Cross and Krantz (1964). The new species is separable from A. lacunatus by its smaller size, ornamentations on dorsum and venter, the shape of tergite margins; aggenital plate; gnathosoma, as well as the chaetotaxy of legs I-IV. Holotype female and five paratype females; holotype male and four paratype males, were deposited in the Acari collection of Plant Protection Department, Faculty of Agriculture, Assiut University, Egypt. Some biological aspects are provided. Female mite produces one close d eggs capsule and remains alive until the capsule comes out. Female mites settle on the dorsum of host female during the pre-oviposition period, then leave the host in the period of oviposition and feed on egg’s contents. Male mites are ephemeral and may not emerge from the gravid-female. Mite sex ratios are highly skewed, with an average of 19.7 ± 0.3: 0.77 ± 0.23 females to males (mite progeny/eggs capsule/gravid-female). When females reach adulthood, mating take place either within the gravid-female (if present) or with a male which has previously emerged from another eggs capsule. Male mites are not parasitic and had poor locomotion abilities.","PeriodicalId":298155,"journal":{"name":"Acarines: Journal of the Egyptian Society of Acarology","volume":"58 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132674469","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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