Pub Date : 2022-12-22DOI: 10.21608/eajbsa.2022.275287
R. A., E. S., S. M.
{"title":"Insecticidal and Biochemical Effects of Jatropha Oil on Cotton Leaf Worm, Spodoptera littoralis, Larvae and F1 Larvae Produced from Irradiated Parent Males","authors":"R. A., E. S., S. M.","doi":"10.21608/eajbsa.2022.275287","DOIUrl":"https://doi.org/10.21608/eajbsa.2022.275287","url":null,"abstract":"","PeriodicalId":11424,"journal":{"name":"Egyptian Academic Journal of Biological Sciences. A, Entomology","volume":"182 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-12-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73182735","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 : 2022-12-21DOI: 10.21608/eajbsa.2022.274616
A. Negm, A. Gabarty, H.A.S. Elelimy
Ceratitis capitata is considered one of the world’s most destructive pests. Medflies can infest over 300 species of fruit plants, adapt to a variety of climate zones and have a high invasive potential. Medfly can target economically valuable fruit, resulting in significant economic losses estimated to be in the billions of dollars per year. This study aimed to investigate the effect of X-ray irradiation on the female ovary of Ceratitis capitata (resulting from irradiated pupae) in comparison to a normal female ovary of the same age. The structure of normal and treated female ovaries of Ceratitis capitata was studied using light and transmission electron microscopy. The female reproductive system of Ceratitis capitata is composed of paired lateral ovaries. Each ovary consists of polytrophic meroistic ovarioles formed by a terminal filament, a germarium and a vitellarium. The female ovaries were greatly affected by X-ray irradiation because of the appearance of abnormal shape and size of egg chambers, degeneration of nurse cells and their nucleus, the nucleus of follicular epithelium appear devoid of chromatin materials, presence of lysosomes and myeloid bodies, the oocytes appear devoid of yolk granules and its nucleus. The results of this study show that X-ray radiation technology has a clear effect on C. capitata and could be considered an effective and safe method to control medflies populations.
{"title":"Ultrastructure and Histopathological Alteration in The Ovaries of Ceratitis capitata (Wiedemann) (Diptera: Tephritidae) Induced by X-ray Radiation","authors":"A. Negm, A. Gabarty, H.A.S. Elelimy","doi":"10.21608/eajbsa.2022.274616","DOIUrl":"https://doi.org/10.21608/eajbsa.2022.274616","url":null,"abstract":"Ceratitis capitata is considered one of the world’s most destructive pests. Medflies can infest over 300 species of fruit plants, adapt to a variety of climate zones and have a high invasive potential. Medfly can target economically valuable fruit, resulting in significant economic losses estimated to be in the billions of dollars per year. This study aimed to investigate the effect of X-ray irradiation on the female ovary of Ceratitis capitata (resulting from irradiated pupae) in comparison to a normal female ovary of the same age. The structure of normal and treated female ovaries of Ceratitis capitata was studied using light and transmission electron microscopy. The female reproductive system of Ceratitis capitata is composed of paired lateral ovaries. Each ovary consists of polytrophic meroistic ovarioles formed by a terminal filament, a germarium and a vitellarium. The female ovaries were greatly affected by X-ray irradiation because of the appearance of abnormal shape and size of egg chambers, degeneration of nurse cells and their nucleus, the nucleus of follicular epithelium appear devoid of chromatin materials, presence of lysosomes and myeloid bodies, the oocytes appear devoid of yolk granules and its nucleus. The results of this study show that X-ray radiation technology has a clear effect on C. capitata and could be considered an effective and safe method to control medflies populations.","PeriodicalId":11424,"journal":{"name":"Egyptian Academic Journal of Biological Sciences. A, Entomology","volume":"41 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-12-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85704142","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 : 2022-12-18DOI: 10.21608/eajbsa.2022.274320
M. Abdou, Shimaa S. Ahmed, Ola H. Zyaan
The current investigation was conducted to study the efficacy of natural diatomaceous earth (DE) alone and combined with two fungal pathogens: Metarhizium anisopliae and Beauveria bassiana , as a new formulation against Spodoptera littoralis third instar larvae under laboratory conditions. When M . anisopliae , B . bassiana , and DE were applied alone, the mortalities of larvae were concentration-dependent. The LC 50 values were 299.2, 391.5
{"title":"Efficacy of Two Entomopathogenic Fungi in Combination with Diatomaceous Earth Against Spodoptera littoralis (Boisd.) (Lepidoptera: Noctuidae)","authors":"M. Abdou, Shimaa S. Ahmed, Ola H. Zyaan","doi":"10.21608/eajbsa.2022.274320","DOIUrl":"https://doi.org/10.21608/eajbsa.2022.274320","url":null,"abstract":"The current investigation was conducted to study the efficacy of natural diatomaceous earth (DE) alone and combined with two fungal pathogens: Metarhizium anisopliae and Beauveria bassiana , as a new formulation against Spodoptera littoralis third instar larvae under laboratory conditions. When M . anisopliae , B . bassiana , and DE were applied alone, the mortalities of larvae were concentration-dependent. The LC 50 values were 299.2, 391.5","PeriodicalId":11424,"journal":{"name":"Egyptian Academic Journal of Biological Sciences. A, Entomology","volume":"59 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-12-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72526881","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 : 2022-12-15DOI: 10.21608/eajbsa.2022.274319
E. Ghallab, Gawhara M. M. Abu El-Hassan, Radwa zmy, S. Gadallah, S. Fawki
ABSTRACT
摘要
{"title":"Morphological Variation and DNA Barcoding Identification of Acanthoscelides obtectus (Coleoptera: Chrysomelidae: Bruchinae)","authors":"E. Ghallab, Gawhara M. M. Abu El-Hassan, Radwa zmy, S. Gadallah, S. Fawki","doi":"10.21608/eajbsa.2022.274319","DOIUrl":"https://doi.org/10.21608/eajbsa.2022.274319","url":null,"abstract":"ABSTRACT","PeriodicalId":11424,"journal":{"name":"Egyptian Academic Journal of Biological Sciences. A, Entomology","volume":"3 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81519290","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 : 2022-11-15DOI: 10.21608/eajbsa.2022.270974
Doaa Mohamed, Samiha Azab, A. Salem, O. Mahmoud
The medicinal and aromatic plants are considered one of the most important untraditional agricultural commodities which can be used as a base for Egyptian markets. Therefore, the present studies were carried out on 5 medicinal and aromatic crops at Assiut Governorate during two consecutive growing seasons of 2011-2013 at Shotb district and Abnoub district. Various biological parameters of Aphis craccivora Koch were studied on coriander and henna host plants, in addition to bean, as a primer host. Other host plants showed high mortality rates for aphids when it was reared on. As for the survival percentage of A. craccivora on the three cultivars, the highest percentage was recorded on henna plants, followed by coriander and bean plants. A. craccivora adult’s longevity extended when reared on henna host plants, adults who reared on coriander had the highest number of offspring, followed by henna then bean host plants. The survival rates of total nymphal stages were the highest when reared on the henna host plant, while the lowest was recorded on the bean. Different host plants in the 2nd generation seemed to be less effective on the pest’s life table parameters. Superoxide dismutase activity (SOD) activity, Catalase (CAT) activity, Protein, lipids and carbohydrates content were significantly affected by different host plants. As for the digestive enzymes, the activities of α-amylase and lipase enzymes were not affected with different host plants.
{"title":"Effect of Different Host Plants on Some Biological and Physiological Parameters of Cowpea Aphid, Aphis craccivora Koch Under Certain Laboratory Conditions","authors":"Doaa Mohamed, Samiha Azab, A. Salem, O. Mahmoud","doi":"10.21608/eajbsa.2022.270974","DOIUrl":"https://doi.org/10.21608/eajbsa.2022.270974","url":null,"abstract":"The medicinal and aromatic plants are considered one of the most important untraditional agricultural commodities which can be used as a base for Egyptian markets. Therefore, the present studies were carried out on 5 medicinal and aromatic crops at Assiut Governorate during two consecutive growing seasons of 2011-2013 at Shotb district and Abnoub district. Various biological parameters of Aphis craccivora Koch were studied on coriander and henna host plants, in addition to bean, as a primer host. Other host plants showed high mortality rates for aphids when it was reared on. As for the survival percentage of A. craccivora on the three cultivars, the highest percentage was recorded on henna plants, followed by coriander and bean plants. A. craccivora adult’s longevity extended when reared on henna host plants, adults who reared on coriander had the highest number of offspring, followed by henna then bean host plants. The survival rates of total nymphal stages were the highest when reared on the henna host plant, while the lowest was recorded on the bean. Different host plants in the 2nd generation seemed to be less effective on the pest’s life table parameters. Superoxide dismutase activity (SOD) activity, Catalase (CAT) activity, Protein, lipids and carbohydrates content were significantly affected by different host plants. As for the digestive enzymes, the activities of α-amylase and lipase enzymes were not affected with different host plants.","PeriodicalId":11424,"journal":{"name":"Egyptian Academic Journal of Biological Sciences. A, Entomology","volume":"55 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-11-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83680084","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 : 2022-11-11DOI: 10.21608/eajbsa.2022.270619
Ouda, I., M. M., Fatina Baiomy
of the cucurbit fruit fly Dacus ciliates (Loew) (Diptera: Tephitidae) was studied at constant temperatures (15, 20, 25 and 30 ± 1 ̊ C). The development of immature stages was accelerated by rising of tested temperatures. Development stages average of eggs, larvae, pupal and pre-oviposition period ranged between (31.13 and 3.47), (37.07 and 5.80), (30.27 and 7.20) & (33.13and 5.73) days on 15 and 30 ̊ C, respectively. Also, total immature stages ranged between 98.47 and 16.47 days on 15 and 30 ̊ C, respectively. Whereas, Generation period ranged between 131.60 and 22.20 days on 15 and 30 ̊ C, respectively. Additionally, adult females survived slightly longer than males, also life span, and sex ratio. While the estimated (t o ) threshold temperatures stages eggs, larval, pupal and pre-oviposition period were 15.05, 13.39, 10.64 and 13.11 heat units (U.T.) at 15, 20, 25 and 30 ̊ C ±1 ̊ C, respectively. Based on 30 ̊ C estimations are required to complete the development of all immature stages. Also, Thermal requirements (K) D.D. ' s were estimated to be 58.35, 97.07, 133.58 & 103.81 for eggs, larval, pupal and pre-oviposition periods at 15, 20, 25 and 30 ̊ C ±1 ̊ C, respectively. And development for one generation required 386.17 D.D′s, The study showed that with the identif ication of threshold temperatures (t o ) and thermal units (K) for generation calculated nine expected generations in the field they: two generations in spring, four generations in summer, two generations in autumn, one generation in winter.
{"title":"Biological Study of Cucurbit Fruit Fly, Dacus ciliatus (Loew) on Constant Temperatures","authors":"Ouda, I., M. M., Fatina Baiomy","doi":"10.21608/eajbsa.2022.270619","DOIUrl":"https://doi.org/10.21608/eajbsa.2022.270619","url":null,"abstract":"of the cucurbit fruit fly Dacus ciliates (Loew) (Diptera: Tephitidae) was studied at constant temperatures (15, 20, 25 and 30 ± 1 ̊ C). The development of immature stages was accelerated by rising of tested temperatures. Development stages average of eggs, larvae, pupal and pre-oviposition period ranged between (31.13 and 3.47), (37.07 and 5.80), (30.27 and 7.20) & (33.13and 5.73) days on 15 and 30 ̊ C, respectively. Also, total immature stages ranged between 98.47 and 16.47 days on 15 and 30 ̊ C, respectively. Whereas, Generation period ranged between 131.60 and 22.20 days on 15 and 30 ̊ C, respectively. Additionally, adult females survived slightly longer than males, also life span, and sex ratio. While the estimated (t o ) threshold temperatures stages eggs, larval, pupal and pre-oviposition period were 15.05, 13.39, 10.64 and 13.11 heat units (U.T.) at 15, 20, 25 and 30 ̊ C ±1 ̊ C, respectively. Based on 30 ̊ C estimations are required to complete the development of all immature stages. Also, Thermal requirements (K) D.D. ' s were estimated to be 58.35, 97.07, 133.58 & 103.81 for eggs, larval, pupal and pre-oviposition periods at 15, 20, 25 and 30 ̊ C ±1 ̊ C, respectively. And development for one generation required 386.17 D.D′s, The study showed that with the identif ication of threshold temperatures (t o ) and thermal units (K) for generation calculated nine expected generations in the field they: two generations in spring, four generations in summer, two generations in autumn, one generation in winter.","PeriodicalId":11424,"journal":{"name":"Egyptian Academic Journal of Biological Sciences. A, Entomology","volume":"111 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-11-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89164585","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 : 2022-11-10DOI: 10.21608/eajbsa.2022.269297
D. Embaby, Ahlam Abdel El-wahed, A. Abass, Said Gommaa, Shimaa S. Ahmed
eggs by females mated with males resulted from pupae treated with gamma radiation with doses 25,30,35 and 50 Gy were processed for histological studies. First cleavage nuclei were observed about 2 hours pop and the blastoderm formation occur about 4 hours pop in control. At 8 hours pop, the blastoderm thickness forming the germ band. In about 24 hours pop brain appeared. The germ band Segmentation and formation of different organs started about 36hrs POP. Doses of 25 and 30 caused a failure of cleavage nuclei to migrate toward the periphery to form the blastoderm. While other embryos were blocked at germ band formation. In doses of 35 and 50 Gy, massive cellular and tissue damage to the embryos was reported. the embryonic development of B.zonata during the present study.
{"title":"Histopathological Changes in The Embryonic Development of Bactrocera Zonata (Saund, 1841) (Diptera: Tephritidae) Induced by Gamma Irradiation","authors":"D. Embaby, Ahlam Abdel El-wahed, A. Abass, Said Gommaa, Shimaa S. Ahmed","doi":"10.21608/eajbsa.2022.269297","DOIUrl":"https://doi.org/10.21608/eajbsa.2022.269297","url":null,"abstract":"eggs by females mated with males resulted from pupae treated with gamma radiation with doses 25,30,35 and 50 Gy were processed for histological studies. First cleavage nuclei were observed about 2 hours pop and the blastoderm formation occur about 4 hours pop in control. At 8 hours pop, the blastoderm thickness forming the germ band. In about 24 hours pop brain appeared. The germ band Segmentation and formation of different organs started about 36hrs POP. Doses of 25 and 30 caused a failure of cleavage nuclei to migrate toward the periphery to form the blastoderm. While other embryos were blocked at germ band formation. In doses of 35 and 50 Gy, massive cellular and tissue damage to the embryos was reported. the embryonic development of B.zonata during the present study.","PeriodicalId":11424,"journal":{"name":"Egyptian Academic Journal of Biological Sciences. A, Entomology","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-11-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89181186","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 : 2022-11-02DOI: 10.21608/eajbsa.2022.268245
Eman E. Essa, M. Rady, A. Azazy
The development of indigenous isolates of entomopathogenic nematodes (EPNs) in vivo is a point of concern for small and medium-sized businesses (SMBs), smaller family farms, greenhouse cultivation, or even a cottage industry. Although EPN research studies in Egypt aim to the identification and usage of highly potent and effective indigenous strains against economically significant insect pests, no companies have yet been established for the development and sale of these plant protection products except for small special units affiliated with some research institutes and universities. On increasing demand for non-chemical forms of pest control and the high price product of EPNs, this research assessed the financial feasibility of Galleria mellonella farming for in vivo production of EPNs at small and medium scales. The main finding indicated that the cost production of indigenous EPNs (one Sachest containing 5 x 10 7 IJs) is 200 LE which is considered a low-price product in comparison to the price of products which is variable from about US$ 15 to US$ 160 per sales unit. Moreover, the capital recovery period after one year is 99.7 %.
{"title":"Pre-feasibility Study Establishment of Galleria Farm for Entomopathogenic Nematodes (EPNs) Bio-Insecticides.","authors":"Eman E. Essa, M. Rady, A. Azazy","doi":"10.21608/eajbsa.2022.268245","DOIUrl":"https://doi.org/10.21608/eajbsa.2022.268245","url":null,"abstract":"The development of indigenous isolates of entomopathogenic nematodes (EPNs) in vivo is a point of concern for small and medium-sized businesses (SMBs), smaller family farms, greenhouse cultivation, or even a cottage industry. Although EPN research studies in Egypt aim to the identification and usage of highly potent and effective indigenous strains against economically significant insect pests, no companies have yet been established for the development and sale of these plant protection products except for small special units affiliated with some research institutes and universities. On increasing demand for non-chemical forms of pest control and the high price product of EPNs, this research assessed the financial feasibility of Galleria mellonella farming for in vivo production of EPNs at small and medium scales. The main finding indicated that the cost production of indigenous EPNs (one Sachest containing 5 x 10 7 IJs) is 200 LE which is considered a low-price product in comparison to the price of products which is variable from about US$ 15 to US$ 160 per sales unit. Moreover, the capital recovery period after one year is 99.7 %.","PeriodicalId":11424,"journal":{"name":"Egyptian Academic Journal of Biological Sciences. A, Entomology","volume":"19 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-11-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75698778","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 : 2022-10-30DOI: 10.21608/eajbsa.2022.267902
M. Kamel
negatively by elevation. The predicted highly suitable habitat of S. botellus is mainly concentrated inside the boundary of the St. Katherine protectorate in south Sinai. The most bioclimatic factors that had an impact on S. botellus ' predicted range was the maximum temperature of the warmest month, isothermality, and the amount of precipitation in the coldest quarter. Our findings can help ecologists define sampling regions and create conservation plans for this type of environmental interaction.
{"title":"Mapping the Predicted Geographic Range of The Gall Former Schizomyia botellus (Diptera: Cecidomyiidae) under Influence of Climatic Factors in Arid Habitats.","authors":"M. Kamel","doi":"10.21608/eajbsa.2022.267902","DOIUrl":"https://doi.org/10.21608/eajbsa.2022.267902","url":null,"abstract":"negatively by elevation. The predicted highly suitable habitat of S. botellus is mainly concentrated inside the boundary of the St. Katherine protectorate in south Sinai. The most bioclimatic factors that had an impact on S. botellus ' predicted range was the maximum temperature of the warmest month, isothermality, and the amount of precipitation in the coldest quarter. Our findings can help ecologists define sampling regions and create conservation plans for this type of environmental interaction.","PeriodicalId":11424,"journal":{"name":"Egyptian Academic Journal of Biological Sciences. A, Entomology","volume":"12 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-10-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91300642","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 : 2022-10-29DOI: 10.21608/eajbsa.2022.268877
Ahmed Elnaggar, A. Bream, A. Gabarty, Ahmed Shehata
Chrysomya albiceps play a major role as a mechanical vector for plentiful pathogens to humans and animals such as bacteria, viruses, and helminths, as well as causing myiasis in animals. The present study aimed at investigating the effect of gamma radiation on the reproductive potential and embryonic lethality of C. albiceps. Results showed that the number of eggs laid by C. albiceps females resulted from pupae irradiated with different doses of gamma radiation decreased as the dose increased. Also, the non-hatching eggs %was found to be dose-dependent i.e., increased as the dose of the gamma irradiation used increased.The highest reduction in the number of eggs occurred at high doses (10 and 15 Gy) when irradiated females were crossed with non-irradiated males. Non-hatching egg % increased to record 76.6 and 66.8 at 15 and 10 Gy when irradiated females crossed with irradiated males. Gamma radiation resulted in a progressive increase in the sterility % of C. albiceps females as compared with the untreated group. Complete sterility (100.0%) was attained by 20 Gy for all groups. The sterility index was recorded at 96.3% when irradiated females crossed with non-irradiated males.In addition, gamma radiation-induced a progressive increase in egg lethality giving an estimated LD 50 value of 9.3598 Gy when non-irradiated females mated with irradiated males, compared with 10.6257 Gy for egg-lethality laid by irradiated females mated with non-irradiated males. However, the LD 50 value was 3.603 Gy when both males and females were irradiated, respectively. Generally, C. albiceps females were more radiosensitive than their male counterparts.
{"title":"Reproductive Potential and Embryonic Lethality of The Blowfly, Chrysomya albiceps (Wiedemann 1819)Influenced by Gamma Radiation","authors":"Ahmed Elnaggar, A. Bream, A. Gabarty, Ahmed Shehata","doi":"10.21608/eajbsa.2022.268877","DOIUrl":"https://doi.org/10.21608/eajbsa.2022.268877","url":null,"abstract":"Chrysomya albiceps play a major role as a mechanical vector for plentiful pathogens to humans and animals such as bacteria, viruses, and helminths, as well as causing myiasis in animals. The present study aimed at investigating the effect of gamma radiation on the reproductive potential and embryonic lethality of C. albiceps. Results showed that the number of eggs laid by C. albiceps females resulted from pupae irradiated with different doses of gamma radiation decreased as the dose increased. Also, the non-hatching eggs %was found to be dose-dependent i.e., increased as the dose of the gamma irradiation used increased.The highest reduction in the number of eggs occurred at high doses (10 and 15 Gy) when irradiated females were crossed with non-irradiated males. Non-hatching egg % increased to record 76.6 and 66.8 at 15 and 10 Gy when irradiated females crossed with irradiated males. Gamma radiation resulted in a progressive increase in the sterility % of C. albiceps females as compared with the untreated group. Complete sterility (100.0%) was attained by 20 Gy for all groups. The sterility index was recorded at 96.3% when irradiated females crossed with non-irradiated males.In addition, gamma radiation-induced a progressive increase in egg lethality giving an estimated LD 50 value of 9.3598 Gy when non-irradiated females mated with irradiated males, compared with 10.6257 Gy for egg-lethality laid by irradiated females mated with non-irradiated males. However, the LD 50 value was 3.603 Gy when both males and females were irradiated, respectively. Generally, C. albiceps females were more radiosensitive than their male counterparts.","PeriodicalId":11424,"journal":{"name":"Egyptian Academic Journal of Biological Sciences. A, Entomology","volume":"3 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-10-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87957771","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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