Pub Date : 2023-01-20DOI: 10.21608/ejz.2022.169125.1089
A. Ibrahim, N. Soliman, Sherihan Alamin, A. Mesbah, Ali M. A. Mahmoud
ABSTRACT
摘要
{"title":"SUSCEPTIBILITY OF THE DIFFERENT STAGES OF THE MEDFLY CERATITIS CAPITATA WIEDEMANN (DIPTERA: TEPHRITIDAE) TO THE EXTRACTS OF VIOLA ODORATA AND EUCALYPTUS CAMALDEULENSIS","authors":"A. Ibrahim, N. Soliman, Sherihan Alamin, A. Mesbah, Ali M. A. Mahmoud","doi":"10.21608/ejz.2022.169125.1089","DOIUrl":"https://doi.org/10.21608/ejz.2022.169125.1089","url":null,"abstract":"ABSTRACT","PeriodicalId":11659,"journal":{"name":"Egyptian Journal of Zoology","volume":"25 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-01-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89629314","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 : 2023-01-02DOI: 10.21608/ejz.2022.174453.1090
M. Abdou, Ola H. Zyaan
{"title":"THE PROFICIENCY OF SILVER NANOPARTICLES IN CONTROLLING COTTON LEAFWORM, SPODOPTERA LITTORALIS (BOISD.), UNDER THE LABORATORY CONDITIONS","authors":"M. Abdou, Ola H. Zyaan","doi":"10.21608/ejz.2022.174453.1090","DOIUrl":"https://doi.org/10.21608/ejz.2022.174453.1090","url":null,"abstract":"","PeriodicalId":11659,"journal":{"name":"Egyptian Journal of Zoology","volume":"30 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-01-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81692438","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 : 2022-10-13DOI: 10.21608/ejz.2022.149916.1085
F. El-messady, Noha Khalil, M. Mousa
Recently, an increasing attention has been paid to the productivity and propagation of grey mullet “ Mugil cephalus ”. In view of the fact that the steroidogenic hormones play a key role in fish maturation and production of fertile ova, the present work was planned to determine and investigate the steroidogenic cells in the testes of grey mullet, and thence to determine their levels of activities during its maturing cycle, aiming at making use of the obtained data in fish breeding and culture. Mature males of M. cephalus were obtained from the natural habitat (Al Bardawil Lagoon). Cytochemical and ultrastructural investigations were performed for the steroidogenic cells containing 3β-hydroxysteroid dehydrogenase. Five developmental stages were quite distinguishable in M. cephalus males during the testicular cycle: immature stage, stimulating spermatogenesis, rapid spermatogenesis, mature or ripe, and spent stages. The electron microscopy showed that the interstitial (Leydig), lobular bounding, and Sertoli cells inspected during rapid spermatogenesis displayed prominent lipid droplets and cytoplasmic organoids typical of protein-synthesizing cells (i.e. rough endoplasmic reticulum, abundant ribosomes, and distinct Golgi apparatus). In addition, Sertoli cells, in particular, possessed certain microtubules that are known to serve in transporting metabolites. Furthermore, the testes examined after spawning (spent ones) by electron microscope have designated that Sertoli cells, as well as some Leydig cells, had been changed into phagocytic ones to get ride from the non-ejaculated sperm cells. In conclusion, the present results could be very valuable in the problems concerning fish maturation in captivity.
{"title":"HISTOLOGY, HISTOCHEMISTRY, AND ULTRASTRUCTURE OF STEROIDOGENESIS DURING TESTICULAR CYCLE OF MUGIL CEPHALUS IN THE NATURAL HABITAT","authors":"F. El-messady, Noha Khalil, M. Mousa","doi":"10.21608/ejz.2022.149916.1085","DOIUrl":"https://doi.org/10.21608/ejz.2022.149916.1085","url":null,"abstract":"Recently, an increasing attention has been paid to the productivity and propagation of grey mullet “ Mugil cephalus ”. In view of the fact that the steroidogenic hormones play a key role in fish maturation and production of fertile ova, the present work was planned to determine and investigate the steroidogenic cells in the testes of grey mullet, and thence to determine their levels of activities during its maturing cycle, aiming at making use of the obtained data in fish breeding and culture. Mature males of M. cephalus were obtained from the natural habitat (Al Bardawil Lagoon). Cytochemical and ultrastructural investigations were performed for the steroidogenic cells containing 3β-hydroxysteroid dehydrogenase. Five developmental stages were quite distinguishable in M. cephalus males during the testicular cycle: immature stage, stimulating spermatogenesis, rapid spermatogenesis, mature or ripe, and spent stages. The electron microscopy showed that the interstitial (Leydig), lobular bounding, and Sertoli cells inspected during rapid spermatogenesis displayed prominent lipid droplets and cytoplasmic organoids typical of protein-synthesizing cells (i.e. rough endoplasmic reticulum, abundant ribosomes, and distinct Golgi apparatus). In addition, Sertoli cells, in particular, possessed certain microtubules that are known to serve in transporting metabolites. Furthermore, the testes examined after spawning (spent ones) by electron microscope have designated that Sertoli cells, as well as some Leydig cells, had been changed into phagocytic ones to get ride from the non-ejaculated sperm cells. In conclusion, the present results could be very valuable in the problems concerning fish maturation in captivity.","PeriodicalId":11659,"journal":{"name":"Egyptian Journal of Zoology","volume":"63 1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-10-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78624238","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 : 2022-10-13DOI: 10.21608/ejz.2022.150510.1086
D. Al-Bassel, S. Abo-elhasan, H. Abdel-Halim, Marwa Atwa
The parasitic diseases are one of the potential factors that restrict the development of fish aquaculture because fish parasites not only can cause injuries, but can even lead to death of the fish. The present study aimed to record/update the prevalence and intensity of parasitic helminths in the freshwater catfish " Clarias gariepinus " in Fyoum Governorate, Egypt. A total of 368 Clarias gariepinus samples were collected from Bahr Youssef (line of the River Nile) from Fayoum Governorate during the period from January 2019 to February 2020, and were examined for the presence of helminth parasites. Out of 368 examined fish, 227 (61.7%) were found to be infected with six species of helminthes (three trematodes, two cestodes, and one nematode): Dactylogyrus claridii , Acanthostomum spiniceps , Orientocreadium batrachoides , Polyonchobothrium clarias, Monobothrium sp., and Paracamallanus cythopharynx with infection rates = 13.0%, 2.2%, 5.4%, 9.2%, 13.3%, and 18.5%, respectively. Regarding to the seasonal variations, the obtained results showed that the highest rate of infection was recorded during the spring (76.9%), followed by the summer (70.0%) and the winter (53.5%), while the autumn represented the lowest rate of infection (52.3%). In addition, this study provides additional morphological characters for the parasite Paracamallanus cyathopharynx based on the scanning electron microscopy.
{"title":"PARASITIC HELMINTHS OF THE FRESHWATER CATFISH (CLARIAS GARIEPINUS) FROM FAYOUM GOVERNORATE, EGYPT","authors":"D. Al-Bassel, S. Abo-elhasan, H. Abdel-Halim, Marwa Atwa","doi":"10.21608/ejz.2022.150510.1086","DOIUrl":"https://doi.org/10.21608/ejz.2022.150510.1086","url":null,"abstract":"The parasitic diseases are one of the potential factors that restrict the development of fish aquaculture because fish parasites not only can cause injuries, but can even lead to death of the fish. The present study aimed to record/update the prevalence and intensity of parasitic helminths in the freshwater catfish \" Clarias gariepinus \" in Fyoum Governorate, Egypt. A total of 368 Clarias gariepinus samples were collected from Bahr Youssef (line of the River Nile) from Fayoum Governorate during the period from January 2019 to February 2020, and were examined for the presence of helminth parasites. Out of 368 examined fish, 227 (61.7%) were found to be infected with six species of helminthes (three trematodes, two cestodes, and one nematode): Dactylogyrus claridii , Acanthostomum spiniceps , Orientocreadium batrachoides , Polyonchobothrium clarias, Monobothrium sp., and Paracamallanus cythopharynx with infection rates = 13.0%, 2.2%, 5.4%, 9.2%, 13.3%, and 18.5%, respectively. Regarding to the seasonal variations, the obtained results showed that the highest rate of infection was recorded during the spring (76.9%), followed by the summer (70.0%) and the winter (53.5%), while the autumn represented the lowest rate of infection (52.3%). In addition, this study provides additional morphological characters for the parasite Paracamallanus cyathopharynx based on the scanning electron microscopy.","PeriodicalId":11659,"journal":{"name":"Egyptian Journal of Zoology","volume":"16 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-10-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73754666","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 : 2022-09-30DOI: 10.21608/ejz.2022.147732.1084
Heba M. Abd El Latif, A. El-Morsy
{"title":"PROTECTIVE EFFECT OF GARLIC OIL AGAINST TARTRAZINE-INDUCED HAEMATO-IMMUNOTOXICITY IN RATS","authors":"Heba M. Abd El Latif, A. El-Morsy","doi":"10.21608/ejz.2022.147732.1084","DOIUrl":"https://doi.org/10.21608/ejz.2022.147732.1084","url":null,"abstract":"","PeriodicalId":11659,"journal":{"name":"Egyptian Journal of Zoology","volume":"9 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74399672","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 : 2022-09-29DOI: 10.21608/ejz.2022.139640.1083
H. Hussien, H. Tag, E. Ahmed, Z. Nabil, M. El-Naggar
{"title":"THE ANTIOXIDANT AND HEPATOPROTECTIVE ACTIVITIES OF THE ETHANOLIC EXTRACT OF TINOSPORA CORDIFOLIA LEAVES: IN VITRO AND IN VIVO STUDIES","authors":"H. Hussien, H. Tag, E. Ahmed, Z. Nabil, M. El-Naggar","doi":"10.21608/ejz.2022.139640.1083","DOIUrl":"https://doi.org/10.21608/ejz.2022.139640.1083","url":null,"abstract":"","PeriodicalId":11659,"journal":{"name":"Egyptian Journal of Zoology","volume":"67 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-09-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87627827","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 : 2022-07-12DOI: 10.21608/ejz.2022.135884.1081
A. Kamel, M. Fouad, Heba Mohamed
KBrO 3 is a vital component used in food, beer, pharmaceutical, and cosmetic productions; it produces moderate-to-dangerous toxic insults to a variety of organs. This study aimed to investigate if Moringa oleifera leaves aqueous extract (MOE) can protect rats from KBrO 3 -induced renal toxicity. Four experimental groups of male albino rats (Sprague Dawley) were used here (n=8): control, MOE (400 mg/kg body weight), KBrO 3 (100 mg/kg body weight), and KBrO 3 in combination with MOE groups. Daily for six weeks, each group received orally its unique treatment. After the experimental period kidneys and serum were collected for biochemical, molecular, and histological investigations. The KBrO 3 treatment was associated with a significant rise in serum levels of urea, creatinine, sodium, and potassium. KBrO 3 also caused a significant increase in the renal tissue levels of malondialdehyde and nitric oxide, while reducing the activities of antioxidant enzymes in the renal tissues. Moreover, KBrO 3 led to kidney inflammation and fibrosis by increasing the tumor necrosis factor-α, interleukin-6, and tumor growth factor-β1, which was followed by upregulation in the renal expression of miRNA 21 ( miR-21 ), miR-29 , and miR-192 . In comparison to the control group, histopathological evaluation of the KBrO 3 group revealed degenerative alterations and damage in the kidney tissues. Conversely, co-treatment with MOE revealed a noticeable alleviation of the harmful effects of KBrO 3 in almost all examined parameters. In conclusion, MOE could be utilized as an alternative therapy to alleviate the detrimental effects of KBrO 3 on kidneys due to its antioxidant, anti-inflammatory, and anti-fibrotic activities.
{"title":"PROTECTIVE EFFECT OF AQUEOUS EXTRACT OF MORINGA OLEIFERA LEAVES AGAINST POTASSIUM BROMATE-INDUCED RENAL TOXICITY IN RATS","authors":"A. Kamel, M. Fouad, Heba Mohamed","doi":"10.21608/ejz.2022.135884.1081","DOIUrl":"https://doi.org/10.21608/ejz.2022.135884.1081","url":null,"abstract":"KBrO 3 is a vital component used in food, beer, pharmaceutical, and cosmetic productions; it produces moderate-to-dangerous toxic insults to a variety of organs. This study aimed to investigate if Moringa oleifera leaves aqueous extract (MOE) can protect rats from KBrO 3 -induced renal toxicity. Four experimental groups of male albino rats (Sprague Dawley) were used here (n=8): control, MOE (400 mg/kg body weight), KBrO 3 (100 mg/kg body weight), and KBrO 3 in combination with MOE groups. Daily for six weeks, each group received orally its unique treatment. After the experimental period kidneys and serum were collected for biochemical, molecular, and histological investigations. The KBrO 3 treatment was associated with a significant rise in serum levels of urea, creatinine, sodium, and potassium. KBrO 3 also caused a significant increase in the renal tissue levels of malondialdehyde and nitric oxide, while reducing the activities of antioxidant enzymes in the renal tissues. Moreover, KBrO 3 led to kidney inflammation and fibrosis by increasing the tumor necrosis factor-α, interleukin-6, and tumor growth factor-β1, which was followed by upregulation in the renal expression of miRNA 21 ( miR-21 ), miR-29 , and miR-192 . In comparison to the control group, histopathological evaluation of the KBrO 3 group revealed degenerative alterations and damage in the kidney tissues. Conversely, co-treatment with MOE revealed a noticeable alleviation of the harmful effects of KBrO 3 in almost all examined parameters. In conclusion, MOE could be utilized as an alternative therapy to alleviate the detrimental effects of KBrO 3 on kidneys due to its antioxidant, anti-inflammatory, and anti-fibrotic activities.","PeriodicalId":11659,"journal":{"name":"Egyptian Journal of Zoology","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-07-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75940368","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 : 2022-07-12DOI: 10.21608/ejz.2022.134076.1080
R. Ahmed
Several histological and immunohistochemical techniques are used in the diagnosis of fibrosis. To better visualization of collagen fibers in both normal and pathological tissues, new optical approaches are required. The present study aimed to investigate/compare the efficiency of various histological stains, using the traditional light microscope and the light polarizing microscope, to quantify/evaluate the ovarian and oviduct fibrosis induced by high-fat diet (HFD) consumption. Twenty-Four female albino rats ( Rattus norvegicus albinus ) were randomly allotted into 4 groups (n=6): control groups (fed on standard diet for 6 and 12 weeks), HFD1 group (fed on HFD for 6 weeks), and HFD2 group (fed on HFD for 12 weeks). The ovarian and oviduct fibrosis were investigated via histological stains including hematoxylin and eosin, Picrosirius Red, van Gieson, and Masson’s trichrome stains using traditional light and polarizing light microscopes, in addition to immunohistochemical demonstrations of α-smooth muscle actin (α-SMA) and vimentin. Hydroxyproline and tumor necrosis factor-α (TNF-α) were also investigated biochemically in the ovarian and oviduct tissues. The results showed that the HFD induced ovarian and oviducts fibrosis in time-dependent manner with significant increases in hydroxyproline and TNF-α values, as well as immunoexpression of α-SMA and vimentin. Picrosirius red stain achieved ideal results in collagen demonstration when compared with van Gieson and Masson’s trichrome stains. Picrosirius red stain in combination with the polarization microscope represented high sensitivity in collagen estimation in comparison with light microscopy. This work recommended using polarizing microscope as a tool to evaluate fibrosis of both the ovaries and the oviducts.
{"title":"DIFFERENTIAL STAINING PATTERNS FOR EVALUATION OF OVARIAN AND OVIDUCTS FIBROSIS USING THE POLARIZED LIGHT MICROSCOPE AND THE DIGITAL IMAGES ANALYSIS","authors":"R. Ahmed","doi":"10.21608/ejz.2022.134076.1080","DOIUrl":"https://doi.org/10.21608/ejz.2022.134076.1080","url":null,"abstract":"Several histological and immunohistochemical techniques are used in the diagnosis of fibrosis. To better visualization of collagen fibers in both normal and pathological tissues, new optical approaches are required. The present study aimed to investigate/compare the efficiency of various histological stains, using the traditional light microscope and the light polarizing microscope, to quantify/evaluate the ovarian and oviduct fibrosis induced by high-fat diet (HFD) consumption. Twenty-Four female albino rats ( Rattus norvegicus albinus ) were randomly allotted into 4 groups (n=6): control groups (fed on standard diet for 6 and 12 weeks), HFD1 group (fed on HFD for 6 weeks), and HFD2 group (fed on HFD for 12 weeks). The ovarian and oviduct fibrosis were investigated via histological stains including hematoxylin and eosin, Picrosirius Red, van Gieson, and Masson’s trichrome stains using traditional light and polarizing light microscopes, in addition to immunohistochemical demonstrations of α-smooth muscle actin (α-SMA) and vimentin. Hydroxyproline and tumor necrosis factor-α (TNF-α) were also investigated biochemically in the ovarian and oviduct tissues. The results showed that the HFD induced ovarian and oviducts fibrosis in time-dependent manner with significant increases in hydroxyproline and TNF-α values, as well as immunoexpression of α-SMA and vimentin. Picrosirius red stain achieved ideal results in collagen demonstration when compared with van Gieson and Masson’s trichrome stains. Picrosirius red stain in combination with the polarization microscope represented high sensitivity in collagen estimation in comparison with light microscopy. This work recommended using polarizing microscope as a tool to evaluate fibrosis of both the ovaries and the oviducts.","PeriodicalId":11659,"journal":{"name":"Egyptian Journal of Zoology","volume":"15 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-07-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74486096","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 : 2022-07-11DOI: 10.21608/ejz.2022.136069.1082
Faten Abo El-Dahab, M. Baz, Y. El-Sayed, Rasha Abdel Hameed, Abla Abd El Meguid
The mosquitoes are nuisance pests to humans and represent a global health challenge. The larvicidal activities of Commiphora molmol resin, mirazid, and formulated and crystalline acetylsalicylic acid (F-ASA and C-ASA, respectively) were evaluated against the 2 nd and 4 th instar larvae of Culex pipiens at 27°C, after 48 hours post-treatment in different water qualities. Water samples were collected from the tap, canal, and pool. The water pH, nitrate, salinity, and dissolved oxygen were measured. The results showed that the larvicidal activity of the tested compounds was increased by increasing their concentrations. The mortality reached 100% and 98.4% for the 2 nd instar larvae at 160 ppm, 100% and 90.4% for the 4 th instar larvae at 320 ppm of mirazid and C. molmol , respectively. The mortality induced by F-ASA and C-ASA reached 99.2% and 75.2% for the 2 nd instar larvae at 1200 ppm, 100% and 92.0% for the 4 th instar larvae at 2000 ppm, respectively. The efficiency of the tested materials against the 4 th instar larvae was affected by the water quality; whereas their LC 50 values were 38.3-1045.9 ppm in tap water; while at canal and pool water the LC 50 values were 44.5-1073 and 49.8-1126.0 ppm, respectively, at 27°C and 48 hours post-treatment. The correlation coefficient between the susceptibility of Cx. pipiens larvae to the tested compounds and each physicochemical factor showed a positive correlation with water nitrate and dissolved oxygen. In conclusion, mirazid, C. molmol , F-ASA, and C-ASA can be good alternative agents for controlling mosquitos’ larvae in different water qualities.
{"title":"EFFECT OF WATER QUALITY ON THE EFFICIENCY OF COMMIPHORA MOLMOL RESIN, MIRAZID, AND FORMULATED AND CRYSTALLINE ACETYLSALICYLIC ACIDS IN CONTROLLING CULEX PIPIENS","authors":"Faten Abo El-Dahab, M. Baz, Y. El-Sayed, Rasha Abdel Hameed, Abla Abd El Meguid","doi":"10.21608/ejz.2022.136069.1082","DOIUrl":"https://doi.org/10.21608/ejz.2022.136069.1082","url":null,"abstract":"The mosquitoes are nuisance pests to humans and represent a global health challenge. The larvicidal activities of Commiphora molmol resin, mirazid, and formulated and crystalline acetylsalicylic acid (F-ASA and C-ASA, respectively) were evaluated against the 2 nd and 4 th instar larvae of Culex pipiens at 27°C, after 48 hours post-treatment in different water qualities. Water samples were collected from the tap, canal, and pool. The water pH, nitrate, salinity, and dissolved oxygen were measured. The results showed that the larvicidal activity of the tested compounds was increased by increasing their concentrations. The mortality reached 100% and 98.4% for the 2 nd instar larvae at 160 ppm, 100% and 90.4% for the 4 th instar larvae at 320 ppm of mirazid and C. molmol , respectively. The mortality induced by F-ASA and C-ASA reached 99.2% and 75.2% for the 2 nd instar larvae at 1200 ppm, 100% and 92.0% for the 4 th instar larvae at 2000 ppm, respectively. The efficiency of the tested materials against the 4 th instar larvae was affected by the water quality; whereas their LC 50 values were 38.3-1045.9 ppm in tap water; while at canal and pool water the LC 50 values were 44.5-1073 and 49.8-1126.0 ppm, respectively, at 27°C and 48 hours post-treatment. The correlation coefficient between the susceptibility of Cx. pipiens larvae to the tested compounds and each physicochemical factor showed a positive correlation with water nitrate and dissolved oxygen. In conclusion, mirazid, C. molmol , F-ASA, and C-ASA can be good alternative agents for controlling mosquitos’ larvae in different water qualities.","PeriodicalId":11659,"journal":{"name":"Egyptian Journal of Zoology","volume":"52 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-07-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88755301","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 : 2022-07-11DOI: 10.21608/ejz.2022.124472.1075
A. Assar, Shawkia Z. Mahmoud, S. Mahmoud
The aim of the current study was to identify and compare the biological consequences of three nanoparticles (NPs): “silver, aluminum oxide, and zinc oxide” against the house fly “ Musca domestica L.”. The NPs were applied by feeding the early second instar larvae on diets mixed with the selected NPs at varying concentrations (5, 10, 20, 30, 40, and 60 mg/g diet). The consequences demonstrated that all the tested NPs were toxic to M . domestica larvae. Silver NPs were the most toxic, induced 100% larval mortalities at 40 mg/g diet and its toxicity index was 100. Median lethal concentration values (LC 50 ) were 20.8, 38.7, and 49.6 mg/g diet for Ag, Al 2 O 3, and ZnO NPs, respectively. The tested NPs caused a significant prolongation ( P <0.05) in larval and pupal period. The pupation percent and adult emergence decreased significantly ( P <0.05) by all NPs as contrasted to the control group. All the tested NPs caused a reduction in the larval and pupal weights. In addition,
{"title":"COMPARATIVE BIOACTIVITY OF SILVER, ALUMINUM OXIDE, AND ZINC OXIDE NANOPARTICLES ON THE HOUSE FLY “MUSCA DOMESTICA L. (DIPTERA: MUSCIDAE)”","authors":"A. Assar, Shawkia Z. Mahmoud, S. Mahmoud","doi":"10.21608/ejz.2022.124472.1075","DOIUrl":"https://doi.org/10.21608/ejz.2022.124472.1075","url":null,"abstract":"The aim of the current study was to identify and compare the biological consequences of three nanoparticles (NPs): “silver, aluminum oxide, and zinc oxide” against the house fly “ Musca domestica L.”. The NPs were applied by feeding the early second instar larvae on diets mixed with the selected NPs at varying concentrations (5, 10, 20, 30, 40, and 60 mg/g diet). The consequences demonstrated that all the tested NPs were toxic to M . domestica larvae. Silver NPs were the most toxic, induced 100% larval mortalities at 40 mg/g diet and its toxicity index was 100. Median lethal concentration values (LC 50 ) were 20.8, 38.7, and 49.6 mg/g diet for Ag, Al 2 O 3, and ZnO NPs, respectively. The tested NPs caused a significant prolongation ( P <0.05) in larval and pupal period. The pupation percent and adult emergence decreased significantly ( P <0.05) by all NPs as contrasted to the control group. All the tested NPs caused a reduction in the larval and pupal weights. In addition,","PeriodicalId":11659,"journal":{"name":"Egyptian Journal of Zoology","volume":"72 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-07-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85976680","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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